bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ситуация на рынке сыра до и после введения продовольственного эмбарго
Authors: Белова Т.Н. , Чернышов И.Н. 
Published: April 2023

В статье рассматриваются процессы формирования российского рынка сыра после введения продовольственного эмбарго в 2014 г. и в условиях политики импортозамещения. Проведенный анализ указывает на снижение объемов и изменение структуры импорта, замещение поставщиков из Центральной и Западной Европы белорусскими и латиноамериканскими экспортерами, повышение потребительской цены и значительное снижение качества продукта. На примере рынка сыра авторы показывают, что процессы импортозамещения происходят за счет потребителя, как и на других агропродовольственных рынках. Гармонизация отношений на рынке сыра, считают авторы, возможна при возвращении на него традиционных производителей из стран дальнего зарубежья. Это станет возможным с внесением изменений в список продуктов, запрещенных к ввозу в Россию, и последующим точечным регулированием продуктовых рынков с использованием инструментов правильного протекционизма.
PENGARUH RASIO KEUANGAN TERHADAP HARGA SAHAM EMITEN SYARIAH SEKTOR BASIC MATERIAL
Authors: Nanda Rizki Fifi 
Published: April 2023

Tujuan penelitian ini untuk mengetahui Current Ratio (CR), Total Asset Turnover (TATO), Debt to Equity Ratio (DER), Return on Assets (ROA) berpengaruh terhadap Harga Saham. Metode penelitian yang digunakan dalam penelitian ini adalah metode purposive sampling, Dalam penelitian ini sampel yang digunakan sebanyak 30 sampel yang listing di Bursa Efek Indonesia dari total populasi 61. Data yang digunakan adalah data kuantitatif laporan keuangan tahunan perusahaan yang terdaftar di Bursa Efek Indonesia (BEI). Penelitian ini menggunakan metode analisa regresi linear berganda dengan memakai program SPSS. Hasil penelitian yang diperoleh menunjukan variabel independen memiliki pengaruh yang signifikan terhadap variabel dependen.Pengujian Asumsi Klasik yang dilakukan terdiri atas uji multikolinearitas dan uji heteroskedastisitas, Uji Regresi Data Panel, Uji Hipotesis yang terdiri dari uji t parsial, uji f simultan dan uji determinasi R2

Kata kunci: Current Ratio (CR); Total Asset Turnover (TATO); Debt to Equity Ratio (DER); Return on Assets (ROA); harga saham
ANALISIS INDIKATOR PERSEPSI MAHASISWA PADA KEGUNAAN TEKNOLOGI KEUANGAN
Authors: Fahmi T.A.A , Mukmin Mas Nur , Hutomo Y.P , Putri D.A. 
Published: April 2023

Teknologi keuangan (Financial Technology) memudahkan individu dalam melakukan berbagai aktivitas keuangan. Penelitian bertujuaan untuk menganalisa persepsi mahasiswa fakultas ekonomi pada penggunaan teknologi keuangan. Penelitian ini menggunakan mixed method dengan teknik propability sampling diolah menggunakan aplikasi IBM SPSS 26 For Windows dan aplikasi NVIVO 12. untuk metode analisis data menggunakan analisis tematik dan analisis dekriptif kualitatif. Hasil penelitian ini memiliki indikator persepsi efisiensi mendapatkan sebuah kode atau indikator berupa hemat biaya, fitur layanan, mengurangi waktu transaksi dan fitur layanan, persepsi effektifitas mendapatkan sebuah kode atua indikator berupa kecepatan transaksi, inovasi, dan manfaat, persepsi kegunaan dalam meningkatkan kinerjaa mendapatkan kode atau indikator berupa pengalaman dan produk layanan, dan persepsi kegunaaan dalam menjawab kebutuhan Informasi mendapatkan kode atau indikator berupa akses informasi dan mudah informasi.
Improved Reliability and Specific Design of Plasma Spray Processes
Authors: Mauer G. , Rauwald K.-H. , Mücke R. , Vaßen R. 
Published: April 2023

Abstract
In this work, the effects of plasma spray process variables are systemized in various process schemes. On this basis, different approaches to improving process reliability are described and assessed paying particular attention to in-flight particle diagnostics. A new test applying spray bead analysis is introduced and the first results are presented.
Synthesis and Thermophysical Properties of Gd2Zr2O7/SrZrO3 Composite as a Thermal Barrier Coating Material
Authors: Ma W. , Cai L.-L. , Dong H.-Y. , Bai Y. , Yin Y.-C. , Li X.-H. 
Published: April 2023

Abstract
This study evaluates a method for producing Gd2Zr2O7/SrZrO3, a ceramic-matrix composite considered for use as a thermal barrier coating. GdZrO/SrZrO powders are synthesized by co-precipitation, then cold pressed and sintered to form the bulk composite material. Phase stability of the powder and bulk material is assessed by X-ray diffraction and several bulk material properties are determined, including microhardness, Young’s modulus, fracture toughness, thermal expansion coefficient, heat capacity, thermal diffusivity, and thermal conductivity. The results are presented and discussed.
Microstructure and Thermal Property of Atmospheric Plasma Sprayed Yb2Si2O7 Coating
Authors: Zhong X. , Niu Y. , Huang L. , Zheng X. , Ding C. , Li H. , Sun J. 
Published: April 2023

Abstract
In this work, Yb2Si2O7 powder was synthesized from Yb2O3 and SiO2 powders and applied to aluminum substrates by atmospheric plasma spraying. Phase composition and microstructure were examined and density, porosity, and hardness were assessed. Thermal stability was evaluated by thermogravimetry and differential thermal analysis and thermal conductivity was measured. The as-sprayed coating was mainly composed of crystalline Yb2Si2O7 with a small amount of Yb2SiO5 and amorphous Yb2Si2O7. It had a dense structure containing pores, microcracks, and other types of defects. TG-DTA tests showed that there was almost no mass change from room temperature to 1200 °C, although a sharp exothermic peak appeared at 1038 °C, indicating that the amorphous phase had crystallized. The thermal conductivity of the coating decreased with increasing temperature, reaching a minimum of 0.68 W/(m·K) at 600 °C, followed by an increase at higher temperatures.
Comparison of SFS, SPS and HVSFS for the Production of Photocatalytic Titania Coatings
Authors: Robinson B. , Tabecki A. , Paul S. , Shi G. , Mills A. , Parkin I. P. , Darr J. A. , de Villiers Lovelock H. L. 
Published: April 2023

Abstract
This study assesses the viability of three suspension spray processes for producing photocatalytic TiO2. In the experiments, flame, plasma, and HVOF torches were used to spray TiO2 suspensions onto stainless steel substrates, varying process parameters in order to gauge their effect on phase composition, crystal size and, in turn, photoactivity. The TiO2 samples were characterized by means of XRD, SEM, and UV-Vis analysis and photocatalytic hydrogen-production testing. Suspension flame spraying proved to be the most effective method, producing phase-controlled nanostructured titania 32% more photoactive than the SPS samples and up to five times more active than analogous coatings produced by CVD.
Influence of Particle Size and Spray Parameters on Formation of Dense Yttria Coatings by Suspension Plasma Spraying
Authors: Fujimori K. , Kitamura J. , Wada T. , Liu J. , Callen B. 
Published: April 2023

Abstract
This study investigates the influence of particle size, nozzle diameter, gas flow rate, and stand-off distance on the microstructure and density of suspension plasma sprayed yttrium-oxide coatings and the intermediate effect of particle characteristics. Three ethanol suspensions were prepared, one with coarse Y2O3, one with fine Y2O3, and one with submicron YSZ. The suspensions were injected vertically into the plasma jet downstream of the nozzle and a thermal spray sensor was used to measure in-flight velocity and temperature. The coatings were found to have columnar and dense vertically cracked (DVC) microstructure, varying in hardness and density. Text results and examination findings are presented and correlated with spray parameters, particle properties, and possible coating formation mechanisms.
Columnar Structured Hydroxyapatite Coating Deposited by Micro-Plasma Spray
Authors: Wang Y. , Fan T. , Liu X. , Zhou Z. , He D. 
Published: April 2023

Abstract
In this work, micro-plasma spraying is used to produce hydroxyapatite coatings on Ti-6Al-4V substrates. To understand coating formation mechanisms, in-flight particle velocity and surface temperature were monitored under different spraying conditions. XRD measurements show that the resulting coatings have a high degree of crystallinity with little amorphous or metastable phases. Some of the coatings were also found to have a uniformly distributed columnar structure, corresponding to a strong (002) texture and excellent stability in Hanks’ salt solution even after 14 days of immersion.
In-Flight Particle Diagnostics and Control for the Production of Thermally Sprayed Babbitt Coatings
Authors: Nascimento A. R. C. , Ettouil F. B. , Savoire S. , Schulz R. , Moreau C. 
Published: April 2023

Abstract
High-Sn bearing alloys have been used for more than a century in many areas of industry. They are typically applied by casting, although thermal spraying is gaining in use, particularly for component repairs. This study evaluates the effects of HVOF spray parameters on the velocity, temperature, size, and trajectory of Babbitt particles and correlates the in-flight characteristics with coating porosity and intermetallic phase distribution. In the experiments, Babbitt layers up to 370 μm thick were deposited on carbon steel substrates while measuring particle properties and deposition efficiency. Coating samples were analyzed by means of optical and electronic microscopy and some were chemically etched to reveal the size and distribution of intermetallic phases. Test results show a significant refinement in intermetallic phase distribution when compared with commercial flame and arc-sprayed coatings.
Spray Parameter Effect on HVAF Sprayed (Fe, Cr)C-30FeNiCrSi Hardmetal Coatings
Authors: Matikainen V. , Khanlari K. , Milanti A. , Koivuluoto H. , Vuoristo P. 
Published: April 2023

Abstract
In this work, a design-of-experiments approach is used to map the main parameters of a high-velocity airfuel (HVAF) spraying process. Chromium carbide based material with a NiFeCrSi matrix was sprayed with varying gas flows and nozzle designs while monitoring their effect on particle temperature, velocity, and coating build-up. It was found that sufficient heating is critical to abrasive wear resistance and that particle temperatures are primarily controlled by fuel flow rates. Nozzle geometry, on the other hand, had the biggest effect on particle velocity, which was found to increase nearly 100 m/s by switching from a cylindrical to a convergent-divergent design.
Fluid Dynamics and Modelling of Plasma Jet in PS-PVD Process and Monte Carlo Simulations of PS-PVD Columns
Authors: Wang P. , Mücke R. , He W. , Mauer G. , Vaßen R. 
Published: April 2023

Abstract
A numerical model of a supersonic compressible plasma flow has been developed with the aid of CFD software to describe the thermodynamic and transport properties of a plasma jet in order to investigate the PS-PVD process and how to optimize it for thermal barrier coatings and, in particular, the formation of columnar microstructures. The required properties of the plasma gas mixtures were obtained as a function of temperature and pressure from thermodynamic calculations in chemical equilibrium with the effect of ionization. Two-dimensional Monte Carlo simulations were conducted to provide insight on the evolution of columnar microstructure, accounting for self-shadowing and vapor incidence angle but ignoring the effect of diffusion. Simulated structures and predicted values are presented and compared with actual images and measurements.
Deposition of Thick Copper Cold Spray Coatings on Steel for Used Nuclear Fuel Repository Using Nitrogen and Pulsed Waterjet Surface Preparation
Authors: Fernández R. , MacDonald D. , Nastic A. , Jodoin B. , Vijay M. , Tieu A. 
Published: April 2023

Abstract
This study demonstrates a new approach for producing thick copper coatings on steel by cold spraying via nitrogen gas. To overcome delamination problems without resorting to helium, substrate surfaces are treated prior to deposition using a forced-pulse waterjet. Samples with different levels of roughness were prepared using both conventional and waterjet surface treatments. The samples were then coated with thick Cu using only N2 and adhesion tests were performed. Test results show good coating adhesion on all waterjet treated substrates with bond strengths ranging from approximately 25 MPa to 58 MPa, depending on surface roughness. Consistent with previous studies, cold spray Cu did not adhere to any substrates that had been polished or grit blasted. It is shown that the pulsed waterjet creates a surface with anchoring features that interlock with incoming particles to form a strong mechanical bond.
New Hardfacing Material with High Impact Wear Resistance
Authors: Bengtsson S. , Dizdar S. , Maroli B. , Baguette L. 
Published: April 2023

Abstract
This study evaluates a new iron-based hardfacing powder alloy. The powder, a FeWCrCB tool steel, is applied to mild steel substrates by plasma transferred arc (PTA) and laser cladding. The clad specimens are examined and tested for weldability, impact and abrasive wear resistance, and wear life. It is shown that the alloy solidifies in a narrow temperature range, first forming a fcc phase followed by a eutectic structure consisting of austenite, carbides, and borides. After solidification, the austenite is transformed to martensite. Impact wear testing shows that the new alloy offers approximately ten times longer life than tungsten-based nickel-matrix composites, but it was outperformed by 50% in abrasive wear tests.
Thermal Stability of Sub-Micro Structured YSZ Coatings Deposited by APS and SPS
Authors: Zhai M. , Yang J. , Zhong X. , Zhao H. , Liu C. , Tao S. 
Published: April 2023

Abstract
This study assesses the thermal stability of YSZ coatings produced from nanostructured feedstock by means of atmospheric and suspension plasma spraying. Free-standing YSZ coatings were isothermally treated for 24 h at different temperatures (1200-1600 °C) and at 1550 °C for 20 to 100 h. Afterwards, the coatings were examined to determine the effect of heating on phase composition, microstructure, morphology, and hardness. No evidence of tetragonal-monoclinic phase transformation was detected in the coatings that had been treated for 24 h, even at 1600 °C, but in coatings treated for different periods of time at 1550 °C, a phase transformation occurred after 40 h. Overall, the suspension plasma sprayed coating showed the greatest degree of change due to thermal aging.
Plasma Spraying of Suspensions with Hybrid Water-Stabilized Plasma Technology
Authors: Musalek R. , Medricky J. , Kotlan J. , Tesar T. , Pala Z. , Lukac F. , Chraska T. 
Published: April 2023

Abstract
This paper presents the results of three experiments in which coatings are produced by suspension plasma spraying using a water-stabilized hybrid torch. Shadowgraphy is used to optimize the injection of the suspension and visualize liquid fragmentation in the plasma jet. Deposition efficiency is evaluated and the production of coatings with different microstructures is demonstrated for YSZ, YAG, and Al2O3.
Thermal Fatigue Failure of Thermal Barrier Coatings with a High-Cr MCrAlY Bond Coat
Authors: Yuan K. , Jonnalagadda K. P. , Yu Y. , Peng R. L. , Li X.-H. , Ji X. , Shen J. 
Published: April 2023

Abstract
Thermal barrier coatings (TBCs) consisting of a MCrAlY bond coat and a YSZ topcoat were air plasma sprayed onto Hastelloy X substrates. Samples were thermally cycled between 100 °C and 1100 °C and thermal fatigue failures were investigated via microstructure analyses. Final fatigue failure was caused by the formation of interface-parallel cracks in the topcoat, which was found to strongly related to the oxidation behavior of the bond coat. The development of oxide layers was therefore studied in detail and a thermo-kinetic model was used to explore the role of elemental diffusion in oxide formation.
New Investigation on the High Temperature Capability Limits of APS YSZ Thermal Barrier Coatings at ~1500°C: Preliminary Laser-Rig Testing Results
Authors: Lima R. S. , Marple B. R. 
Published: April 2023

Abstract
The objective of this present work is to obtain preliminary data to check the validity of the current 1300 °C upper temperature limit of atmospheric plasma sprayed (APS) YSZ thermal barrier coatings (TBCs). To accomplish this objective, optimized YSZ coating systems were sprayed onto CMSX-4 substrate pucks and their thermal cycling performance was evaluated using a laser rig. Test samples were operated under a temperature gradient of 1500 °C at the coating frontside and 1000 °C at the substrate backside. Two heating-cooling sequences were applied: 5 min of heating and 2 min of cooling for 1000 cycles and 1 h of heating and 2 min of cooling for 10 cycles. In both cases, no TBC failures were observed.
Thermal and Mechanical Properties of Novel Lanthanum Zirconate Based Thermal Barrier Coatings
Authors: Guo X. , Lu Z. , Jung Y.-G. , Li L. , Knapp J. , Zhang J. 
Published: April 2023

Abstract
This study evaluates the thermal and mechanical properties of plasma-sprayed lanthanum zirconate thermal barrier coatings and compares them with conventional 8YSZ TBCs. The La2Zr2O7 coatings were found to have a lower thermal conductivity than 8YSZ, although this is offset by lower bond cap tensile strength and poor erosion resistance. A double-layered structure with a La2Zr2O7 coating on porous YSZ was also tested and is shown to have better thermal shock performance than single-layer La2Zr2O7 and double-layer structures formed on dense 8YSZ sublayers.
Implementing the Equation of State to Account for the Density Variation at the Inlet Boundaries for High Velocity Oxy Gas Fuel Process
Authors: Aldosari M. , Benyounis K. Y. , Stokes J. 
Published: April 2023

Abstract
The gas dynamics of high-velocity oxyfuel (HVOF) spraying can be described by conservation continuum equations of mass continuity, κ-ε models for turbulence, Navier-Stokes, and the equation of state, the latter accounting for density variations in the flow field. In previous work, a reduced kinetic eddy dissipation model has been validated against measured data, but only for constant mass flow. In this study, the equation of state for HVOF spraying is implemented in numerical modeling software in order to correlate variations in mass flow density with pressure and temperature. The results show how the temperature and pressure of the gases at the inlet of the nozzle, prior to entering the combustion chamber, influence combustion pressure as well as the compressibility of the gases before expanding to ambient pressure.
Effect of Chemical Surface Treatment of Polymer Composites on the Formation of Erosion-Resistant Coatings
Authors: Elrikh A. , Dolhen M. , Goutier S. , Armstrong G. , Vardelle A. 
Published: April 2023

Abstract
The aim of this study is to improve the surface properties of carbon fiber reinforced polymers (CFRP) to facilitate the deposition of a ceramic erosion-resistant coating by air plasma spraying (APS). To avoid mechanical damage induced by grit blasting, the CFRP substrate was chemically etched to remove the majority of superficial epoxy, which is responsible for the poor adhesion of ceramic coatings. Chemical etch times of around 5 min were found to be the most effective, although remaining regions of epoxy interfered with the formation of alumina coatings. To overcome the problem, plasma spray parameters were adjusted, resulting in high-velocity, partially melted alumina particles capable of removing epoxy left on substrate surfaces. Using a combination of chemical etching and the modified spraying process, continuous 50 µm thick alumina coatings are achievable on polymer-matrix composite substrates.
Improving Atmospheric Plasma Sprayed Electrolyte Layers of Solid Oxide Fuel Cells by Use of Powder Separator
Authors: Liu T. , Arnold J. 
Published: April 2023

Abstract
In this work, a dense YSZ coating with homogenous structure was produced by atmospheric plasma spraying (APS) on a NiO-YSZ anode supported by a porous metal substrate. A powder separator was used to limit fluctuations in the particle stream, thus stabilizing the process. During feeding, the YSZ powder was separated into fine particles that were fed directly to the plasma and coarse particles that were collected and reused. The coatings obtained exhibited high homogeneity both across the surface and through the thickness. SEM images showed that the YSZ layer was crack-free and that its porosity ratio rivaled that of vacuum plasma sprayed zirconia when two separators were used. Based on these observations and the results of gas leak rate measurements, the potential of online powder separation to improve SOFC electrolyte performance has been established.
Education, Training and Certification for Thermal Spraying: Experiences and Future Development
Authors: Huber R. , Ohliger-Volmer A. 
Published: April 2023

Abstract
Experience has shown that qualified supervisors and skilled workers are essential for manufacturing premium-quality thermal spray products. This paper describes the training defined by EWF guidelines and reviews prevailing curricula. Changes and reforms associated with DIN EN ISO 14922 and ISO Norm 14918 are also presented along with emerging trends in thermal spray training and certification.
Substrate Preparation and Thermal Spray Coating Performance—A Review
Authors: Aulakh S. S. , Kaushal G. 
Published: April 2023

Abstract
Coating adhesion has a major effect on the performance of thermal spray coatings and is in large part determined by the chemical, physical, and mechanical properties of the substrate surface. This paper reviews some of the work that has been done to optimize the surface of different materials for thermal spraying. It covers a number of substrate preparation methods, including grit blasting, laser ablation, laser surface texturing, and dry ice blasting, and explains how different process variables affect surface roughness and bond strength.
Wear Behavior of Post-Treated Arc Sprayed Cermet Coatings by Means of Hammer Peening
Authors: Tillmann W. , Hagen L. 
Published: April 2023

Abstract
This study evaluates the effect of hammer peening on the wear behavior of cermet coatings. WC-FeCMnSi coatings were produced by twin wire arc spraying and post-treated on a five-axis machining center equipped with pneumatic peen. The surface topography of the peened coatings was examined and compared to as-sprayed and polished samples. Dry sliding friction and abrasive wear tests showed that the treated coatings had lower friction coefficients, but were less wear resistant than non-treated samples. Likewise, strain hardening effects revealed by nanoindentation testing were offset by process-induced cracking of embedded carbides, which contributes to break-outs and third-body wear.
Closed-Loop Control Tools for Automated Laser Cladding Processes
Authors: Wank A. , Beck F. , Schmengler C. , Zierhut J. , Kloiber K. 
Published: April 2023

Abstract
This paper demonstrates the use of two laser cladding automation tools, one that automates laser power and one that automates laser head positioning. Both tools are based on intelligent cameras that evaluate recordings from the cladding zone through the optical path of the laser. The laser power tool monitors and controls local emission from the laser cladding process. The position control tool detects distances between edges on component surfaces and generates an error correction signal based on edge-geometry and material data and various process settings. Examples in which the closed-loop tools are used to clad thin-walled tubes with different alloys and fill irregular grooves on shafts are presented.
Alternative Industrial Surface Solutions
Authors: Nielsen P. T. , Nielsen S. E. 
Published: April 2023

Abstract
This paper discusses some of the practical uses of laser cladding and laser fusing in part manufacturing and component repair. It provides an overview of both processes and the types of surfaces they can produce. It presents application examples for each process and interprets corrosion and wear properties of the respective coatings. It also discusses the benefits of repair friendly surfaces.