bluuebunny/crossref_metadata_2025 huggingface dataset:
On the Erudition of a (non)Orthodox Author from the first third of the 17th C.: The Case of Kasijan Sakovyč
Authors:   Institute of Philosophy of the Russian Academy of Sciences, Korzo Margarita
Published: April 2023

Kasijan Sakovyč (сa. 1578–1647) can rightfully be attributed to one of the most educated representatives of both Orthodox and Uniate monasticism in Polish-Lithuanian Commonwealth of the first third of the 17th century. Kasijan’s diversity in terms of literary genres reflects his wide knowledge. Thus, his polemical treatises against the Orthodox Church and, partly, against the Uniates, echoed the events of his personal biography: after 1625, Sakovyč converted from Orthodox Christianity to the Uniate Church; in 1640, he became a Catholic. Two textbooks (compilations from Pseudo-Aristoteles) were partly related to his teaching activity and rectorship at Kyiv Brotherhood school. A rhymed funeral eulogy for the Hetman of Zaporozhian Cossacks, Petro Sahaidachny, testifies to Kasijan’s poetic talents. The present article aims to investigate Sakovyč’s writings as a means to reconstruct his personal “resource” or texts or books that he read and used in his literary activity. Two prefaces by Kasijan (a dedication to the nobleman Aleksander Zasławski and an appeal to the ‘pious reader’) are used for this case study, both written for “Desiderosus, abo Scieszka do miłości Bożey” (Desiderosus or a Path to God’s Love) (Kraków, 1625). The work is a Polish translation of an anonymous Spanish treatise ca. 1515, which was prepared by Kasper Wilkowski (died after 1589) and published three times during the late 16th century. Attributing Latin phrases, maxims, quotations, and references to historical figures and works, visual images, etc., that are used in both prefaces, allows one to suggest what books were known and available to Sakovyč and could have been the source of his erudition.
Extraordinary Natural Phenomena in Old Rus’ and Czech Historiography of the 12th—13th Century in a Comparative Perspective
Authors:   Palacký University, Komendová Jitka
Published: April 2023

The study aims to determine the way in which the extraordinary natural phenomena, including exceptional astronomical or meteorological ones, natural disasters, etc., are reflected in East Slavic and Czech historiography of the 12th and 13th centuries. The analysis of such reports shows that there are fundamental differences in the frequency of these reports and their interpretation depending on the local tradition and the historical genre. While minimal attention is paid to these topics in historical records of Hungary and Poland, historiographical works of medieval Bohemia not only capture a wealth of data on astronomical and meteorological phenomena, but also reflect a diverse range of attitudes to the meaning of recording extraordinary natural phenomena. The way of reflection of these phenomena was given both by the overall intention of the work and by the individual interest of a particular author. The oldest historiographical texts of Old Rus’ shared a strong belief that extraordinary astronomical and meteorological phenomena represent one of the codes by which God communicates with mankind. The recording of such phenomena therefore served as a tool to understand the moral qualities of the human race, the meaning of history, the relationship between man and God. In East Slavic and Czech medieval historiography, the recording of extraordinary natural phenomena strengthens the chronological structure of interpretation, as both of these historiographical traditions emphasize absolute chronology as the basic principle of narration. While in Czech historiography the records of exceptional natural phenomena indicate the relationship between the present and the past, Old Russian chronicles understand extraordinary natural phenomena as a kind of visible, illustrative link between the past, present and future.
Развојот на постпозитивниот морфолошки член во македонскиот јазик како експонент на генеричната референција
Authors:   Ss. Cyril and Methodius University in Skopje, Karapejovski Boban
Published: April 2023

Постпозитивниот морфолошки член е главниот експонент на граматичката категорија определеност, заедно со показните заменки, во македонскиот јазик. Сепак, постојат видови определеност каде што членот се специјализирал и станал единственото средство што може да се употреби како маркер на соодветната референција. Сфаќањето на нешто како идентификувано, издвоено, определено, детерминирано итн. е субјективно и припаѓа во доменот на комуникацискиот чин, па затоа определеноста, sensu lato, и членост, sensu stricto, може да се означат како егоцентрички единици на јазикот (егоцентрици). Од друга страна, пак, генеричност, која подразбира упатување кон цело множество, т.е. род (genus), grosso modo, го исклучува членот како експонент на определеноста сфатена како множество од конечен број елементи, кои можат да се идентификуваат. Историскиот развој на членот упатува на тоа дека кај овој тип референција тој најдоцна се појавува како показател, а за тоа влијаеле извесни синтаксички и прагматички фактори, односно устројството на реченицата и актуелното реченично раслојување — тематско-рематската структура на исказот.
Vseslav Bryachislavich’s Sons. Strategy and the Order of Name-giving
Authors:   St. Petersburg Institute of History, Russian Academy of Sciences, Vvedenskiy Anton ,   National Research University Higher School of Economics
Published: April 2023

The article is devoted to the issue of the seniority of the sons of the Polotsk prince Vseslav Bryachislavich. The article hypothesizes that Vseslav Bryachislavich named his eldest sons in honor of Boris and Gleb—the sons of prince Vladimir Svyatoslavich. Boris and Gleb Vladimirovich had not only dynastic names, but also baptismal names—Roman and Davyd. Vseslav Bryachislavich named his first two sons the dynastic names of the Vladimirovichs (Boris, Gleb), and the third and fourth—their baptismal names (Roman, Davyd). The article also hypothesizes that Vseslav Bryachislavich did not have a son named Rogvolod. All chronicle contexts in which researchers tend to see Vseslav's son with that name refer to Vseslav's grandson, Rogvolod Borisovich.
The Names of the Muscovites: Onomastics of the Russian Emigration in the Polish-Lithuanian Commonwealth in the 16th — Early 17th Centuries
Authors:   Russian State University for the Humanities, Erusalimskiy Konstantin
Published: April 2023

The article describes the ways of transformation of the personal names of the émigrés from the Russian state in the Polish Crown and the Grand Duchy of Lithuania, and during the first decades of the Polish-Lithuanian Commonwealth. The family names could undergo transformations in nine possible ways. The peculiarities of integration of the patronyms and personal names are also studied, along with the rare and unique names, untypical for the Russian cultural context. The author extends the onomastic databases by Nikolai Tupikov and Stepan Veselovsky and elaborates on the means of personal identification based on the forms extant in the sources.
The Origins of the Byliny: a Working Hypothesis
Authors:   International University in Spain, Torres Prieto Susana
Published: April 2023

The oral heroic poems found in the Northern province of Olonets in the late nineteenth century, usually known as byliny, present a unique case of oral preservation of medieval literature within European context. For decades, due to the lack of manuscript copies of those texts, theories about their origin have been highly conjectural and subject to many ideological demands. While any definitive conclusion on their authorship, place and time of composition has to remain necessarily speculative, the present article, analysing the internal evidence of the poems and what can be concluded from studies on orality in other literary traditions, proposes that they were originally composed in written form in a clerical environment in the Northern area of Kyivan Rus’.
Вечните теми на православието: Патриарх Евтимий и Евтимий Зигавин за иконоборството (езикови аспекти)
Authors:   Институт за български език, Българска академия на науките, Tsibranska-Kostova Mariyana
Published: April 2023

Авторът си поставя за цел да анализира езиковото изражение на иконоборството, отразено в „Похвалното слово за Йоан Поливотски“ от Патриарх Евтимий и титула Κατὰ εἰκονομάχων от славянския превод на „Паноплия Догматика“ на Евтимий Зигавин. Двата източника се отличават със специфични черти за всеки от тях, което изключва възможността за търсене на пряка езиково-текстологична съотносимост, но позволява да се говори за обща тематична рамка и общи езикови тенденции. Творбата на Патриарх Евтимий се стреми да постигне морално-политическо единство пред османската заплаха за Балканите. Преводът на „Паноплията“ в началото на XV в. е духовен отговор на атонското монашество в същия исторически момент. Актуализацията на темата за иконоборството именно през втората половина на XIV в. — началото на XV в. не е случайна. Книжовното наследство на православието винаги е било всеоръжие в отстояването на духовните ценности и фактор в консолидацията между народ, владетел и религия в превратни исторически моменти. За доказване на тази теза се правят лексикални сравнения в лексикона срещу иконоборството от двете творби по ключови семантични полета: наименования на иконоборците, семантичните редове икона-идол; думи термини, сложни думи и др. Като приложение се издава наборният текст на единствения запазен препис от титула за иконоборците в славянски превод по ръкопис Ms. Slav. BAR 296 от Библиотеката на Румънската академия.
The Apostle with Commentaries of Alexander Soltan
Authors:   Russian Academy of Sciences Library, Korogodina Maria
Published: April 2023

The Apostle with Commentaries that belonged to Marszałek Alexander Soltan differs from the Slavic manuscript tradition of books with commentaries. The manuscript has common features with the Christinopol Apostle of the 12th century. The original additions of the Apostle of Alexander Soltan show that its protograph was edited in the middle of the 12th century. The Apostle of Alexander Soltan, which was kept in Vilnius, was one of the sources for the Bible of Matthew the Tenth (1502–1507) and encouraged Matthew to add original margins and signs in his Bible. In the beginning of the 18th century the Apostle of Alexander Soltan fell into the hands of second-hand booksellers, and was divided by them into three parts. Two of them are kept in Moscow and St. Petersburg now.
Sündenvergebung oder spirituelle Führung? Transformation der Bedeutung von „duhovnik“ in der russischen Sprache des 19. Jahrhunderts
Authors:   Saint Tikhon's Orthodox University of Humanities, Černyi Alexey
Published: April 2023

Dieser Artikel untersucht den Begriff „Duhovnik“ (wortwörtlich aus dem Russischen „Beichtvater“) in der russischen Sprache des 19. Jahrhunderts anhand des Ansatz es der „Begriff sgeschichte“. Eine Analyse der Quellen zeigt, dass mit der Verbreitung des Diskurses zum Thema Askese unter Beibehaltung der Grundbedeutung des “Priesters, der die Beichte abnimmt” dem Beichtvater allmählich asketische Anforderungen gestellt werden. Diese beziehen sich auf die klösterliche Tradition der geistlichen Führung, des Gehorsams und der Gedankenoffenbarung. Der Wandel der Erwartungen spiegelt weniger die gelebte Realität wider, sondern wird zu einer Art Zukunftsgestaltung. Ihre Besonderheit besteht aber darin, dass sie nicht mit der Idee des Fortschritts verbunden ist, sondern mit dem Versuch, die ursprüngliche und „verlorene“ Spiritualität wiederherzustellen - als Reaktion auf Modernisierung und Säkularisierung. Die im Laufe der Forschung gewonnene Bandbreite der Bedeutungen ermöglicht es, die Mehrdeutigkeit des Begriffs „Duhovnik“ in der modernen Praxis der russisch-orthodoxen Kirche zu erklären.
Through Political Accusations to Socialist Realism: Discussion of A. M. Dmitriev's Novel “Aye to Steer the Boat”
Authors:   Institute of Russian Literature (Pushkin House), Russian Academy of Sciences, Sysoeva Anastasia
Published: April 2023

The objective of the study is to determine one of the regulatory mechanisms of literary practices in the early 1930s USSR. The paper aims to analyze the methods of discussion; to identify the main requirements for literary texts; to review the changes made in reprints. In the course of the present research, we studied archival documents which had previously not been introduced into academic study (materials from two oral discussions of A. M. Dmitriev's novel “Aye to Steer the Boat” (1931), correspondence), as well as reviews published in periodicals. The novel was perceived as an achievement of the Literary Association of the Red Army and Navy, which «tutored» its author. The article presents key points of the extensive discussion that reflected the ramifications of the RAPP's leader’s confrontation with the “Litfront” group. Political accusations, rhetorical techniques based on logical fallacies, contradictory reproaches all characterize the discourse of the era, while indicating that presumption of guilt was applied even to a writer loyal to the new regime. They also allow us to talk about the significant influence of critics and political workers on editorial amendments made to the text. The article highlights recurrent demands placed on the text, which reflected the shift of early 1930s Soviet literature towards the sole Socialist Realism approach. It was assumed that the writer would plausibly depict the preferred constructed image of reality in accordance with the current policy of the party, offering the reader a role model—a Bolshevik hero. The same period saw the onset of the requirement to write in a simple literary language.
Hadist tematik jihad
Authors: suhabudin Muhamad
Published: April 2023

Jihad adalah suatu jalan yang di ridhoa Allah dantermasuk jalan mendapatkan Rahmat allah jihad bisadi lakukan sesuai kondisi jihad bisa di lakukandengan mencari ilmu melawan hawa nafsu jihad tidakhanya ber perang dan lebih utama jihad melawanhawa nafsu
Vulnerable Isolation and Enmity Concept: Disentangling the blue and dark face of vulnerable narcissism
Authors: Rogoza Radosław
Published: April 2023

A theoretical model of the vulnerable half of the Narcissism Spectrum Model (NSM) – the Vulnerable Isolation and Enmity Concept (VIEC) was presented in the paper. In five studies (total N = 2,383), we show the personality underpinnings of the VIEC in terms of normal and pathological personality and explored the social relations of liking others and being liked. Isolation explains the role of avoidance and social withdrawal, whereas Enmity explains the role of reactive antagonism in vulnerable narcissism. We suggest that vulnerable narcissism is related to internalizing and grandiose narcissism to externalizing pathology. Through the prism of the Circumplex of Personality Metatraits, we argue that the VIEC together with the narcissistic Admiration and Rivalry concept (NARC) covers the whole NSM.
Takhrij Hadis tentang Keutamaan Puasa sebagai Perisai
Authors: Hasanah Uswatun
Published: April 2023

Ibadah puasa merupakan lahan bagi umat Islam untuk melatih dan meningkatkan kesadaran serta ketaatan beragama. Salah satu keutamaan puasa adalah sebagai perisai dari api neraka. Tujuan dari pembahasan ini yaitu untuk mengetahui bagaimana cara mengetahui sumber hadis dari potongan sebuah hadis. Metode yang digunakan dalam men-Takhrij hadis mengenai Puasa Sebagai Perisai dengan menggunakan takhrij hadis manual metode bi lafzi. Hasil penelitian ini menyimpulkan: Puasa dapat menjadi perisai manusia dari api neraka. puasa juga dapat menjadi perisai manusia dari tumbuh dan berkembangnya penyakit-penyakit hati. Adapun cara untuk mengetahui sumber hadis ada beberapa langkah yang harus dilakukan yaitu: 1). Melakukan pencarian sumber hadis dengan menggunakan kata kunci di Mu'jam Mufahras, 2). Mencari hadis tersebut kedalam kitab sumber dengan menggunakan kode kitab yang telah ditemukan di Mu'jam Mufahras.
Kriminalits
Authors: siswoyo nazula tsabitania
Published: April 2023

Kriminalitas Adalah segala bentuk prilakun atau tindakan yang melaanggar hukum atau norma hukum yang berlaku dalam sebuah masyarakat. Dalam konteks hukum pidana, kriminalitas didefinisikan sebagai kegiatan yang merugikan orang atau masyarakat serta dapat di kenakana sansi pidana dari Negara dalam upaya menjaga ketertiban dan keamanan dalam masyarakat.kriminalitas dapat mencakup berbagai bentuk tindakan melanggar hukum seperti pencurian,perampokan,pembunuhan,pemerkosaan,penggelapan,penipuan,dan masih banyak lagi kriminalitas menjadi salah satu masalah serius di masyarakat Karen dapat memberikan dampak buruk bagi seluruh masyarakat baik  secara langsung maupun tidak langsung,kriminalitas Dalam perspektif Islam, kriminalitas dapat diartikan sebagai pelanggaran terhadap hukum yang ditetapkan oleh Allah SWT dalam Al-Quran dan Sunnah Rasul-Nya. Kriminalitas dapat mencakup berbagai jenis tindakan yang merugikan masyarakat, seperti pencurian, pemerkosaan, pembunuhan, dan sebagainya.Dalam Islam, setiap individu memiliki hak dan kewajiban untuk menjaga keamanan dan kesejahteraan masyarakat.
Batons and Ballots: The Effectiveness of State Violence in Fighting Against Catalan Separatism
Authors: Barceló Joan
Published: April 2023

What are the consequences of police brutality in fighting against the Catalan secessionist movement? While Spanish authorities resorted to violence with the hope that forceful action would deter further support for separatism, recent studies of repression argue that state violence tends to backfire. I test these two plausible arguments in the context of non-lethal police brutality to prevent an illegal self-determination referendum. For this, I combine data of the local distribution of police violence during the referendum and the official results of the subsequent regional elections. Because police forces were not deployed randomly, I employ a difference-in-differences estimation with matching to evaluate the electoral consequences of violence. The results show no clear evidence that police brutality affected support for separatism or electoral mobilization in the areas that it was deployed. The lack of a clear effect sets an agenda for future research in the investigation of the conditions under which state violence affects dissenting movements.
More educated people are more WEIRD: Higher education predicts global cultural similarity to WEIRD countries
Authors: White Cindel , Muthukrishna Michael
Published: April 2023

Behavioral scientists increasingly recruit participants from less-WEIRD societies, but continue to oversample highly educated people, such as university students and online workers. Here we test how representative highly educated individuals are of the world’s cultural diversity. We used the cultural fixation index (CFST) to measure cultural distance between people with high and low education in 95 countries (N=268,992), across beliefs, values, and behaviors assessed by the World Values Survey (2005–2022). We find that more highly educated people are significantly more culturally similar to WEIRD countries, including the United States, Anglosphere, and Western Europe. Education did not predict cultural similarities to other large, culturally and politically influential countries, such as China, Russia, and India. Income and self-reported subjective status did not show the same pattern of WEIRD cultural similarity. Our results are consistent with hypotheses linking formal education with Western culture and suggest that cross-cultural samples of university-educated individuals underrepresent the world’s cultural variation.
Psychological pathways explaining the prospective association between obesity and physiological dysregulation
Authors: Putra I Gusti Ngurah Edi , Daly Michael , Sutin Angelina , Steptoe Andrew , Robinson Eric
Published: April 2023

Objective: Obesity is associated with a range of negative psychological conditions that may also affect physiological health. Across two studies, we tested whether a range of psychological measures explain why obesity is prospectively associated with physiological dysregulation, measured via clinical indicators of cardiovascular, immune system, and metabolic function. Methods: We used comparable 4-year follow-up representative longitudinal data of UK and US older adults (≥ 50 years) from the English Longitudinal Study of Ageing (ELSA) (2008/2009–2012/2013) (Study 1; n= 6,250) and the Health and Retirement Study (HRS) (2008/2010–2012/2014) (Study 2; n=9,664). Fourteen and 21 psychological measures (e.g., depressive symptoms, life satisfaction, weight stigma, positive affect) were tested as candidate mediators in Studies 1 and 2, respectively. Results: Obesity predicted physiological dysregulation at follow-up across both studies. In Study 1, only weight stigma (measured between baseline and follow-up) explained 37% of the association between obesity and physiological dysregulation. In Study 2, only changes in weight stigma from baseline to follow-up (not baseline weight stigma) explained 13% of the effect of obesity on future physiological dysregulation. Mediation by weight stigma in both studies was partially attenuated when changes in body mass index (BMI) from baseline to follow-up were controlled for. No other psychological measures explained the association between obesity and physiological dysregulation in either study. Conclusion: The prospective association between obesity and physiological dysregulation was largely not explained by psychological factors. However, experiencing weight stigma is associated with increased weight gain and this process may explain obesity-related declines in physiological health.
Real-time Recognition of Human Behavior using Audio and Video Assistance
Authors: Zheng Ying , de Oliveira Aguiar Orlando Janaína Maria , Elvira-García Wendy , Tanaka Ayumi
Published: April 2023

We propose a feature pruning method that eliminates irrelevant or redundant features in the video sequence based on the spatio-temporal neighborhood of each feature. Furthermore, our framework assumes that human movements are highly correlated with sound emissions, so we employ canonical correlation analysis to determine the correlation between audio and visual features before fusing them. We evaluate the proposed method’s performance using two datasets, one containing political speeches and the other human interactions from TV shows. The experimental results demonstrate the superiority of our approach compared to several baseline and alternative methods for recognizing human behavior. The method also assumes that human movements are highly correlated with sound emissions, so it uses canonical correlation analysis to determine the correlation between audio and visual features prior to fusing them. The performance of the proposed method is evaluated on two datasets, one containing political speeches and the other human interactions from TV shows. The experimental results demonstrate that the proposed method outperforms other baseline and alternative methods for recognizing human behavior.
Analytical Evaluation of Temperature Distribution within a Substrate Under an Impinging Cold Spray Hot Air Jet
Authors: Mahdavi A. , McDonald A.
Published: April 2023

In this study, a mathematical model based on 2D heat conduction was developed to determine the temperature distribution within different substrate materials during cold gas dynamic spraying. Heat transfer between the hot gas and substrate was estimated theoretically and experimentally and the results were compared with those obtained from numerical studies. The heat transfer coefficient was found to be dependent on the distance from the stagnation point of the impinging air jet. It was also concluded that at higher air jet temperatures, the Nusselt number of the spreading air film near the stagnation point could be affected by external heat exchange with colder ambient air.
Effects of Spray Kinetic Parameters on Coating Properties in Plasma Spray Process
Authors: Liu T. , Ma Y. , Zheng L. , Zhang H. , Zhang G.
Published: April 2023

In this work, a three-dimensional coating build-up model is developed to investigate the effect of torch speed, spray angle, and step size on plasma-sprayed coatings. In-flight particle locations and status prior to impact are measured and the data obtained are fed into the model. The model is used to predict the thickness, roughness, and porosity of plasma-sprayed coatings for different spray angles, torch scanning speeds, and scanning steps. Simulation results are presented and discussed along with several rules that govern splat deformation, splat overlap, and pore formation.
Super-Hydrophobic Surface Prepared by Lanthanide Oxide Ceramics Deposition Through PS-PVD Process
Authors: Li J. , Li C. X. , Chen Q. Y.
Published: April 2023

In this study, superhydrophobic samaria-doped ceria coatings are produced by plasma spray physical vapor deposition (PS-PVD) followed by fluorination treatment. Samples are sprayed at distances of 300, 400, and 500 mm in order to obtain surfaces with different morphology. SEM examination shows that the surfaces have a hierarchical structure with island-like features consisting of nanoparticles, the size of which is shown to influence sliding behavior. The superhydrophobic coating surfaces also exhibited good stability in repeated adhesive-tape tear tests.
Improved Corrosion Resistance and Electrical Insulation Behavior of Plasma Sprayed Alumina Coatings Treated by Inorganic Sealant
Authors: Shao F. , Zhao H. , Yang K. , Liu C. , Tao S.
Published: April 2023

In this study, alumina coatings are deposited by atmospheric plasma spraying and sealed using an aluminum phosphate solution containing a small fraction of alumina nanoparticles. Potentiodynamic polarization, electrochemical impedance spectroscopy, and salt spray tests are used to evaluate the corrosion behavior of both the as-sprayed and sealed coating samples. Besides improving corrosion resistance, the sealing treatments are also shown to increase the electrical resistance of the coatings, making them better electrical insulators.
Modification of Thermal Transport Properties of Ar-H2 Working Gases by Calcium-Phosphate Precursors Used for Suspension Plasma Spraying of HA Coatings
Authors: Candidato R. T. , Pateyron B. , Denoirjean A. , Pawlowski L.
Published: April 2023

During suspension plasma spraying, the evaporation of liquid from the solution precursor alters the composition of the working gases thereby changing their thermal transport properties. This aim of this work is to better understand how aqueous calcium-phosphate, used in the synthesis of hydroxyapatite, affects thermal transport in Ar-H2 plasma gas mixtures. Transport properties of the working gases were determined before and after injection of the precursor solution using T&TWinner, a free computational tool for thermochemistry. The results show that a significant increase occurs in the thermal conductivity of the Ar-H2 gas mixture after the injection of the calcium-phosphate solution, but there is little change in momentum transfer between the working gases and solution droplets based on viscosity calculations. Although the software predicts an increase in the heating ability of the Ar-H2 plasma jet, the absence of fully melted splats in the coatings suggests that it is not enough to melt HA particles.
TGO Formation and Failure Mode of TBC Systems Comprising PVD-AlOx Interlayers
Authors: Ali I. , Wett D. , Grund T. , Lampke T.
Published: April 2023

In this investigation, an air plasma sprayed TBC system consisting of a CoNiCrAlY bond coat (BC) and a YSZ topcoat (TC) is produced with a PVD AlOx interlayer in order to study its effect on thermally grown oxides. For comparative purposes, a reference TBC without the AlOx interlayer was also prepared and studied. A cyclic thermal load was applied to both systems and the coatings were examined after 6, 12, 24, 40, and 80 cycles. Crack lengths were measured in the YSZ layer and TGO thicknesses were assessed at the BC-TC interface. An examination of coating microstructures revealed the expected mixed-mode failure in both TBCs. In comparison to the reference TBC, the system with the AlOx interlayer showed reduced crack formation in the TC and slowed TGO formation at the BC-TC interface both during and after thermal treatment.
Cold Spray Onto Carbon Fiber Reinforced Polymers for Lightning Strike Protection
Authors: Che H. , Yue S. , Vo P.
Published: April 2023

In this work, metallic powders are applied to carbon fiber reinforced polymer (CFRP) substrates by low-pressure cold spraying. The coatings as well as the coating-substrate interfaces are characterized and the deposition mechanism is determined. It is shown that gas temperatures above 300°C are required for the continuous deposition of tin. These temperatures bring about partially melting, which facilitates adhesion. Accordingly, a “crack filling” mechanism is proposed to explain the deposition.
Investigation of Amorphous Iron Based Thermal Barrier Coatings
Authors: Bobzin K. , Öte M. , Linke T. F. , Königstein T.
Published: April 2023

The objective of this work is the development of highly amorphous, iron based coatings for thermal barrier applications. Based on the results of previous work, a chemical composition of Fe72Si4B20Nb4 was selected and modified in order to improve glass forming ability and corrosion resistance. Three metallic glass powder mixtures with different amounts of Cr and Fe were prepared, characterized, and deposited by air plasma and HVOF spraying. Different gas flow rates and standoff distances were used and particle temperatures and velocities were measured during spraying. The deposits were examined, tested, and compared and were found to have good potential for thermal barrier coating applications.
Evaluation of High Temperature Oxidation Behavior of a Cold Spray Ni-20Cr Nano-Structured Coating
Authors: Kumar M. , Singh H. , Singh N. , Joshi S. V. , Chavan N. M. , Kumar S.
Published: April 2023

In this investigation, a nanostructured NiCr coating was deposited on boiler steel by cold spraying and its oxidation behavior was evaluated under cyclic thermal conditions. Oxidation kinetics were established through weight change measurements and the oxidized samples were characterized using XRD and SEM analysis and X-ray mapping. The nanostructured coating was more than two times harder than its microstructured equivalent and in oxidation tests, reduced the weight gain of the boiler steel by 68%. The coating was found to have protective oxides in its oxide scale and was shown to be spallation-free.
Advanced Diamond-Reinforced Copper Composite Coatings Via Cold Spray and Material Characterization
Authors: Yin S. , Aldwell B. , Lupoi R.
Published: April 2023

Diamond-reinforced copper matrix composites (DCMC) have great potential for heat sink applications due to their excellent thermal properties. In this investigation, thick DCMC coatings were fabricated via cold spraying using copper-clad diamond powder or its mixture with copper powder. With pure clad diamond powder, the diamond in the original feedstock was almost completely retained in the coating, which contained more than 40 wt% diamond. With mechanically mixed clad diamond and Cu powder, the diamond fraction in the coating was even larger than that of the original feedstock. It was found that the added Cu powder acts as a buffer, effectively preventing the fracture of diamond in the coating.
Erosion Behavior of Gadolinium Zirconate/YSZ Multi-Layered Thermal Barrier Coatings Deposited by Suspension Plasma Spray
Authors: Mahade S. , Curry N. , Björklund S. , Markocsan N. , Nylén P. , Vaßen R.
Published: April 2023

In this study, the current industry standard topcoat for thermal barrier coatings, 8YSZ, is deposited by suspension plasma spraying and its room-temperature erosion resistance is compared with that of SPS sprayed gadolinium zirconate/YSZ and triple-layered GZdense/GZ/YSZ. A columnar microstructure was observed in both the single- and multi-layered TBCs. Single-layer 8YSZ had a higher erosion resistance than multi-layered GZ/YSZ despite of its higher porosity among the as-sprayed coatings. In the case of the triple-layer coating, the denser top layer helped to slightly improve erosion resistance over that of the GZ/YSZ double-layer TBC.
Thermal Conductivity in Suspension Sprayed Thermal Barrier Coatings: Modelling and Experiments
Authors: Ganvir A. , Kumara C. , Gupta M. , Nylén P.
Published: April 2023

The objective of this work is to analyze the thermal conductivity of suspension plasma sprayed thermal barrier coatings using experimental techniques and finite element modeling. The results indicate that the scale of the porosity in the coating has a significant influence on thermal conductivity. Smaller grains, higher overall porosity content, and lower columnar density correspond to lower thermal conductivity. It is shown that FEA can be a powerful tool to predict the thermal conductivity of SPS thermal barrier coatings.
Investigations on the Nature of Ceramic Deposits in Plasma Spray-Physical Vapor Deposition
Authors: He W. , Mauer G. , Vaßen R. , Guillon O. , Gindrat M. , Wäger R.
Published: April 2023

In this work, computational fluid dynamics (CFD) results confirm earlier calculations indicating that significant evaporation occurs in plasma torch nozzles. In addition, experimental work is performed, investigating the nature of ceramic deposits produced by plasma spray-physical vapor deposition (PS-PVD), particularly coatings composed of nanosized clusters. It was found that as the hot plasma jet comes close to the relatively cool substrate, a boundary layer is formed due to the rapid drop in temperature and velocity. In summary, coatings produced by PS-PVD are a mixture of nanocluster and vapor deposition.
Effects of In-Flight Change of Properties on Suspension Plasma Spraying
Authors: Farrokhpanah A. , Coyle T. W. , Mostaghimi J.
Published: April 2023

In this work, a numerical model is developed and used to investigate changes that occur to ceramic suspensions in a plasma jet. The model accounts for atomization processes, evaporation of the fluid phase, and melting of the solid phase. Attention is also given to changes in the physical properties of the suspension mixture as the liquid phase evaporates. The findings clearly show that inclusion of a valid viscosity model is essential to understanding particle trajectories and breakup patterns. The validity of the model is evaluated for tests cases involving YSZ suspensions sprayed at different velocities, injection angles, and injector configurations. Particles for each test case are captured on substrates placed 8 cm away from the nozzle and particle counts and spatial distributions are compared.
Opportunities of Twin-Cathode System as New Suspension Plasma Spray System
Authors: Shahien M. , Suzuki M.
Published: April 2023

This study investigates the feasibility of suspension plasma spraying with a twin-cathode gun that incorporates three plasma torches. Suspensions are fed axially through the hollowed anode of the main torch, producing a plasma that merges with radially directed plasmas from two opposing sub-torches. All of the feedstock powder is fully entrapped and melted in the combined plasmas prior to impact with the substrate surface. This leads to higher deposition efficiencies and allows high feed rates to be used during spraying. Several ceramic coatings with different melting points were fabricated using the newly developed system. Spray trials were also conducted to evaluate the extent to which microstructure can be controlled by varying suspension concentration.
Thermal Cycling Behavior of Suspension Plasma Sprayed Yttria Partially-Stabilized Zirconia Thick Thermal Barrier Coating
Authors: Zhong X. , Ni J. , Zhao H. , Shao F. , Liu C. , Tao S. , Tao W. , Wang Y.
Published: April 2023

This study evaluates the thermal cycling performance of thick thermal barrier coatings (TTBCs). YSZ topcoats with segmentation cracks were deposited by suspension plasma spraying (SPS) on Ni-base superalloy substrates with the aid of a CoNiCrAlY bond coat applied by HVOF spraying. The as-sprayed SPS coatings were characterized based on surface morphology, cross-sectional microstructure, and phase composition. Thermal cycling tests were then carried out on a burner rig that heated the coating surface to 1523 K, followed by quenching to 423 K using compressed air. The SPS coatings exhibited longer thermal shock life than atmospheric plasma sprayed (APS) YSZ, which is attributable to improved strain tolerance due to the presence of vertically segmented cracks.
The Influence of Heat Treatment Presence and Sequence on Oxidation Resistance of YSZ Thermal Barrier Coatings
Authors: Akhmetgareeva A. , Baldaev S. , Mazilin I. , Baldaev L. , Il’inkova T.
Published: April 2023

This study investigates the influence of heat treatment on the oxidation resistance of thermal barrier coatings. The coating systems examined incorporate an APS YSZ topcoat and a HVOF NiCo bond coat. Isothermal heating tests were conducted to determine how heat treat sequences affect interdiffusion between the bond layer and substrate and the microstructure of the bond coat and ceramic topcoat. Before and after heating, specimen cross-sections were studied by SEM and EDX analysis. Preliminary results indicate that the oxidation resistance of YSZ-NiCo coatings can be improved with a suitable heat treatment, in some cases, extending elevated-temperature service life by as much as 500 h. Abstract only; no full-text paper available.
Effect of Sandblasting Pretreatment and Heat Input of APS Process on Property of Low-Temperature Soldered Joint of Tempered Glass to Steel
Authors: Li H. , Zhu T.-H. , Tillmann W. , Li Z.-X.
Published: April 2023

In this work, steel columns are metallurgical bonded to tempered glass with the aid of atmospheric plasma spraying and low-temperature soldering. Glass surfaces were sandblasted using different grain sizes, then multilayer (Al2O3-Cu) coatings were applied at various power levels and spraying distances. Sn-Ag-Cu solder paste was then painted on the metallized glass and steel structures were set in place and soldered in a reflow oven. The interfacial bond strength of the alumina layer was measured along with the strength of the solder joint. The results are presented and correlated with sandblasting grain size and spraying heat input.
Effect of Traverse Speed on Residual Stress Distribution and Cavitation Erosion Behavior of Arc Sprayed Aluminum Bronze Coatings
Authors: Hauer M. , Krebs S. , Krömmer W. , Henkel K.-M.
Published: April 2023

Within the scope of a current research project, aluminum bronze alloy wires were arc sprayed at different traverse speeds in order to influence heat transfer and hence the stress state of the coating. Microstructural, chemical, and mechanical analyses were conducted to evaluate adhesive and cohesive properties. The materials used are highly cavitation erosion resistant propeller alloys, CuAl9Ni5Fe4Mn and CuMn13Al8Fe3Ni2. Cavitation erosion tests were carried out and residual stress distribution was measured using a modified hole-drilling method.
An Investigation on the Optimization, Reliability and Repeatability Assessment of Plasma Spray Coatings Deposited Using Twin Opposing Injectors
Authors: Park K. Y. , Seshadri R. C. , Sampath S. , Yang B. I. , Kim I. S.
Published: April 2023

Plasma-spray injection conditions have a major effect on particle properties and thus the characteristics of deposited coatings. In this investigation, opposing particle streams were injected into a plasma jet and the effect of different configurations and injection parameters was systematically studied. First- and second-order process maps were constructed from particle diagnostic data and in-situ beam curvature measurements, which served to guide optimization efforts.
Microstructure and Performance of WC-10Co-4Cr Coating with Ultrafine / Nanocrystalline Structures
Authors: Wang X. , Wang H. , Song X. , Liu X. , You D. , Yang T.
Published: April 2023

Nanostructured WC-CoCr powder was prepared and deposited on carbon steel substrates by HVOF spraying. The coatings obtained were characterized based on phase constitution, elemental distribution, and microstructure as well as corrosion and sliding wear behaviors. X-ray diffraction was used to identify the main phase constituents and EDS analysis revealed the distribution of Co and Cr in the coating. The mechanisms involved in the formation of microstructure are discussed along with the effects of Cr on coating performance.
High Velocity Spray Deposition of WC Cermets by an Air-Oxygen Controlled Combustion Process
Authors: Parco M. , Fagoaga I. , Barykin G. , Vaquero C.
Published: April 2023

An air-oxygen controlled high velocity combustion spraying process has been developed that uses a special HVOF gun and a broad range of fuel-oxidant ratios. Extremely low flame temperatures can be achieved while maintaining a supersonic flow of combustion products, thus allowing the solid state deposition of almost all industrially relevant alloys. This work deals with the development of superhard cermet coatings using conventional and fine WC-Co(Cr) powders, optimized spray parameters, and different nozzle geometries. Results are compared based on coating microhardness, toughness, and sliding wear resistance.
Performance of HVOF Sprayed Ni Based Coating on T22 Steel in Actual Boiler Environment
Authors: Bala N. , Singh H. , Prakash S.
Published: April 2023

In the present work, commercially available NiCr and NiCr-TiC powder blends were deposited on boiler steel substrates by HVOF spraying. To evaluate coating performance, bare and coated steel samples were placed in the superheater zone of a coal fired boiler for 15 cycles. Weight change and thickness loss were measured and the results were used to establish erosion-corrosion kinetics. XRD and SEM/EDS techniques were used to analyze the microstructure and phase composition of as-sprayed and eroded-corroded specimens. The improvement in erosion-corrosion resistance provided by the coating may be attributed to the formation of nickel and chromium oxides and spinels.
Comparative Investigation on the Mechanical Properties of Thermal Barrier Coatings Made by Atmospheric Plasma Spaying and Suspension Plasma Spraying
Authors: Gizynski M. , Chen X. , Watanabe M. , Araki H. , Kuroda S. , Pakiela Z.
Published: April 2023

This work investigates the fundamental mechanical properties of SPS and APS thermal barrier coatings. SPS YSZ coatings had lower Young’s modulus values and higher interfacial toughness than APS deposited layers. The low stiffness of SPS coatings limits the elastic energy that can be stored in ceramic layers. This coupled with good interfacial toughness might make SPS deposited thermal barrier coatings less prone to delamination due to thermal cycling.
Improvement of Bonding Strength and Impact Resistance of Fe-Based Amorphous Coatings by Structure Modifications
Authors: Liu L. , Zhang C. , Wang W. , Yasir M.
Published: April 2023

Amorphous coatings, despite their high strength and hardness and outstanding corrosion and wear properties, have been limited in application due to poor bonding strength and low impact resistance. This paper reviews the progress that has been made in that regard through the addition of ductile metals, ceramic particles, and polymer phases and through laminar structure design consisting of alternating amorphous and NiCrAl layers. Test results show that the composite amorphous coatings realized by the various methods exhibit significantly improved bonding strength and impact resistance along with their other superior properties.
High Temperature Corrosion of Selected Thermally Sprayed Coatings Deposited by HVOF Technology
Authors: Česánek Z. , Schubert J. , Houdková Š. , Matikainen V. , Koivuluoto H. , Vuoristo P.
Published: April 2023

This paper summarizes the results of high-temperature corrosion and erosion tests conducted on a wide range of coating materials, including Cr3C2-NiCr, Cr3C2-CoNiCrAlY, TiMoCN-Ni, Stellite 6, NiCrBSi, and Hastelloy C-276. All coatings were deposited on stainless steel substrates by HVOF spraying, and after high-temperature testing, were evaluated by means of SEM and EDX analysis. Of the coating materials evaluated, Hastelloy C-276 provided the best protection against high-temperature corrosion. It also exhibited the highest erosion resistance at a particle impact angle of 90°, but at the sharpest impact angle of 15°, Cr3C2-NiCr coatings were found to be the most erosion resistant, likely due to the strong bonding of carbide particles in matrix. NiCrBSi coatings, on the other hand, exhibited the highest values of volume loss.
Influence of Heat-Treatment Methods on Mechanical and Erosion Properties of Thermally Sprayed NiCrBSi Based Coating
Authors: Schubert J. , Česánek Z. , Houdková Š.
Published: April 2023

This paper presents the results of mechanical and tribological property measurements obtained from NiCrBSi alloy coatings and evaluates the effect of different heat treatments. Coating specimens were deposited by means of flame spraying and heat treated using an acetylene torch. HVOF samples were also prepared as a reference for comparison. The microstructure of as-sprayed and heat-treated coating samples were compared, hardness and surface roughness were measured, and erosion resistance tests were performed. The processes and procedures used are described and the results obtained presented and discussed.
Porous Nanostructured Hydroxyapatite Coatings Deposited by Suspension Plasma Spray
Authors: Xu H. , Geng X. , Liu G. , Zhu P. , Zhang C.
Published: April 2023

In this study, hydroxyapatite (HA) coatings were deposited on stainless steel by suspension plasma spraying. Coating samples and suspensions were examined by means of electron microscopy, XRD analysis, and FTIR and Raman spectroscopy. The results show that the coatings are porous and nanostructured with no impurity phases when low H2 flow rates are used. They also contain a significant amount of OH- and CO32-, which facilitates the formation of well-crystallized HA and improves bioactivity and compatibility in implant applications.
Preparation and Cytocompatibility of Nanoporous SiO2-TiO2 Coatings by Plasma Spraying and HF Etching
Authors: Zhao X.
Published: April 2023

SiO2-TiO2 coatings were prepared by atmospheric plasma spraying followed by hydrothermal treatment in a solution of hydrogen fluoride. The as-sprayed coatings mainly consisted of rutile and quartz phases, which remained relatively unchanged during etching. All treated coatings have the typical characteristics of plasma-sprayed deposits, exhibiting rough surfaces with many splats. Differences in surface structure can be observed, however, at the nanoscale, depending on treatment conditions. Treatments of 60 min at 100 °C appear to be most beneficial, resulting in nanoporous coatings that are shown to promote cell proliferation and, in past studies, have been found to improve osteoblast adhesion.
Tribological Performance of Plasma Sprayed Al2O3-Y2O3 Composite Coatings
Authors: Rong J. , Yang K. , Zhao H. , Liu C. , Zhuang Y. , Tao S.
Published: April 2023

In the present study, Al2O3 and Al2O3-Y2O3 composite coatings were deposited by atmospheric plasma spraying and compared based on microstructure, hardness, and sliding wear behavior. The mass ratio of α-Al2O3/γ-Al2O3 was found to be 0.53 in the composite, compared to 0.08 in the alumina layer, which explains why the Al2O3-Y2O3 coatings are harder and better conductors of heat. Tribological tests show that the friction coefficients of the composite coating samples are more stable and the wear rates lower, which may be related to the formation of a graphite transferred film on abraded surfaces.