bluuebunny/crossref_metadata_2025_split huggingface dataset:
Einbindung und Nachweis von Polymeren in thermisch gespritzten Schichten (Implementation and Characterization of Polymers in Thermally Sprayed Coatings)
Authors: Hartmann S. , Bültmann F. , Janke F. 
Published: May 2022

Abstract
The improvement of the tribologic characteristics of surfaces is an important application of thermal sprayed coatings. Also various ranges of application demand good antiadhesive characteristics. The tribologic and antiadhesive characteristics of fluorine containing polymers are very good. Since furthermore those polymers have the highest thermal resistance of all plastics it has been investigated if those polymers can be integrated in thermal sprayed oxide and carbide coatings. The aim was to improve the tribologic and antiadhesive characteristics. The processes Plasma- and HVOF-spraying have been used to apply the coatings. The polymers in the coatings were detected by examinations with the light-optical and the scanning electron microscope. To heighten the contrast for the light microscopy examinations the metallographic sections of the specimens were physically contrasted. To clearly identify the different phases with the scanning electron microscope EDX-analyses have been carried out. Samples have been tested to investigate the mechanical characteristics of the coatings. Paper text in German.
Arc Spray Process Efficiency Analysis for Zinc and Aluminium Coatings
Authors: Belashchenko V. , Unger R. , Ivanov A. , Murdock J. , Sedov V. , Smith E. 
Published: May 2022

Abstract
The use of the wire arc spray process for the production of zinc and aluminum coatings as corrosion protection represents a rapidly growing market. In this paper, the effects of various spray parameters on the performance of the process for these materials are examined. The effects of arc voltage, current, and wire diameter have been studied for their effects on the main factors affecting process performance, spray performance, and application efficiency. The results of this study have led to the development of a spray system or a power supply to maximize the performance of the process for corrosion protection applications. Paper includes a German-language abstract.
Thermal Coating Technology in Controlled Atmospheres (ChamPro)
Authors: Ambuhl P. , Meyer P. 
Published: May 2022

Abstract
The name Champro was made up of the two words "chamber" and "process". It represents Sulzer Metco's thermal spray technology in a pressure chamber with a controlled environment. Different spray system types handle the process operating in a particular way. A part analysis for each type of spray system demonstrates the most economical customer solution. This paper discusses the processes involved in two types of thermal spray system for coating parts in a controlled atmosphere: type of system with continuous process and type of system with batch process. Paper includes a German-language abstract.
High Temperature Corrosion Resistance of Newly Developed Cr-Based Alloy Coatings
Authors: Tobe S. , Andoh Y. , Hidaka K. , Tanaka K. , Nishimura S. , Kawaharada K. , Shirai K. 
Published: May 2022

Abstract
Usually small samples are used to test corrosion resistance of a coating, it is sometimes difficult to make a coating on the small samples. When a cylindrical sample is used and the coating is formed on whole of the surface, three or four times coating processes are required. Thus an abacus bead type sample is proposed in this paper. In this sample, only two times coating processes are required to make coating on whole of the surface. In this paper, the high-temperature corrosion resistance of a novel coating made of Cr-based alloys for use in waste incineration plants is tested and compared with the coating made of a Ni-based alloy. Paper includes a German-language abstract.
In-Situ Temperature Control of Coating and Workpiece in Thermal Spraying
Authors: Jokinen P. , Varis T. , Korpiola K. , Kauppinen T. 
Published: May 2022

Abstract
Thermal spraying is a widespread coating process with various applications in many industry branches. To be able to spray successfully on the sensitive materials an in-situ temperature control is most beneficial. The objective of this paper is to find out the correlation between the mechanical properties of some coating-substrate variations and temperature history of the coating made by HVOF. The paper describes the processes involved in implementation of the thermographic measurement systems into the HVOF spray system to measure the temperature of the coating on aluminum and steel during spraying. It was observed that when spraying on aluminum, the temperature of the coating has a marked influence on the adhesion. Tests with a steel substrate show how the hardness of the WC-CoCr depends on the quenching speed of the coating during spraying. Paper includes a German-language abstract.
On-Iine-Prozeßüberwachung mittels Schallemission beim Beschichten von Walzen (On-Line Control by Acoustic Emission During Coating of Rolls)
Authors: Crostack H.-A. , Reuss G. , Beller U. 
Published: May 2022

Abstract
During the coating of components like rolls the major parameters are easily to control. But this is not sufficient to guarantee and stable a high coating quality. Additionally non-controllable parameters, e. g. nozzle wear, influence the process mainly. For this purpose a new testing method is necessary. On base of the acoustic emission analysis a testing equipment was developed in order to control the spraying conditions. In this investigation acoustic emission is applied to anlyse the signals generated by the impact of the molten particels on the component surface. The analysis of the signals is carried out in combination with a new classification method. The results of controlling APS(Atmosperical Plasma Spraying)-process during the disposition of a Cr2O3- coating will be presented. Paper text in German.
In-Situ-Diagnostik bei Verfahren des thermischen Beschichtens – Particle Flux Imaging (PFI) (In-Situ Diagnostic Related to the Process of Thermal Coating – Particle Flux Imaging (PFI))
Authors: Zierhut J. , Landes K. , Waas C. , Kutscher D. , Heinrich P. , Krömmer W. 
Published: May 2022

Abstract
The quality and the deposition efficiency of coatings produced in thermal spraying processes are influenced by many parameters. Therefore normally the process optimization is laborious and time consuming. To reduce these efforts the low cost In-situ diagnostic method PFI was developed. A stationary CCD camera records the radiation of the hot propellant carrier-medium and of the luminous particle flux. A connected PC immediately converts the brightness distributions to a false colour image corresponding to the temperature and density profiles of the carrier-medium and of the particle flux. Utilizing a reference image the parameters can be adjusted for a prompt and successful optimization of the spray process. The performance of the PFI- method is demonstrated in some examples. Paper text in German.
Surface Texture Correlations with Tensile Adhesive Strength of Thermally Sprayed Coatings Using Area-Scale Fractal Analysis
Authors: Siegmann S. , Brown C.A. 
Published: May 2022

Abstract
This paper investigates a hypothesis for understanding how the substrate texture influences the adhesive strength. A surface-scale fractal analysis is carried out on measured surface textures obtained from various metallic substrate materials. The results of these area-scale analyzes are correlated with the adhesive tensile strength of the finished coating. The results show that scale-considering fractal parameters predict bond strength better than average roughness, and that they support a hypothesis that relates bond to available surface area at a given scale. Paper includes a German-language abstract.
Wegweiser in die “GTS-qualifizierte Zukunft” (The Ways to the “GTS-Qualified Future”)
Authors: Höschele H.H. 
Published: May 2022

Abstract
Future above-average success factors do not depend solely on a good product and on qualified marketing. The source of success lies in a new type of service to success. Strategic thinking with regard to sprayed surface technology with GTS as a partner. Paper text in German.
Schulung und Prüfung von spritztechnischem Personal nach europäischen Normen und Richtlinien (Education, Training and Qualification of Thermal Spraying Personnel According to European Standards and Guidelines)
Authors: Böhme D. , Ohliger A. 
Published: May 2022

Abstract
Working with qualified personnel means for each industrial company effectiveness and competitiveness. International standards and guidelines help to continue not only on the domestic market. In the recent years a considerable standardisation was made specially in the European Community. In the field of thermal spraying EN standards were and will be worked out, which fix the approval testing of thermal sprayers and the tasks and responsibilities of spraying co-ordinators. At the same time EWF guidelines were created to define the minimum requirements for training and educating spraying personnel. These standards and guidelines will be introduced, showing connections between them. Paper text in German.
Approval for Laser Beam Cladding of Marine Engine Components
Authors: Bludszuweit S. , Liebke P. , Hoffmann J. , Schwarte J. , Kohn H. , Schubert E. , Theiler C. 
Published: May 2022

Abstract
BIAS Bremen and SLV Rostock have received approval from the classification society "Germanischer Lloyd" for the novel manufacture and replacement of certain engine components with the powder-fed laser-beam plating process. This paper discusses the development of a procedure based on theoretical and experimental examinations on comparable test components. It is observed that, using this simulation tool, a reliable forecast of material conditions, which consequently emerge from the thermal cycle during laser surface treatment is possible. Paper includes a German-language abstract.
Slurry and Dry Erosion of Arc-Sprayed Metal and Composite Coatings
Authors: Legoux J.G. , Arsenault B. , Immarigeon J.P. , Parameswaran V.R. , Hawthorne H. 
Published: May 2022

Abstract
Arc spraying can be used to produce coatings to protect against wear and tear against erosion. This paper presents some results obtained within the core research program of the NRC Technology Group in Surface Engineering on the development of erosion-resistant coatings. A relationship is established between the volume loss of the material (performance) under different erosion conditions and the coating properties or the microstructure. The results show that the wear behavior of the arc-sprayed materials depends on the type, size and impact strength of the impacting eroding particles. It is observed that for soft materials, even if ductile tearing is an active mode of degradation, the brittle behavior of intersplat oxides also plays an important role. For harder materials, this brittle delamination of splats becomes the dominant erosive mechanism, as can be observed on the worn surfaces. Paper includes a German-language abstract.
Study of the Decarburisation Reactions and Phase Transformations of a WC-Co Powder
Authors: Jacobs L. , Hyland M.M. , Gutleber J. , Sampath S. 
Published: May 2022

Abstract
WC-based coatings have found extensive application in industries requiring wear resistance. WC-12% Co coatings were applied with a variety of high speed combustion spray guns (including HVAF) with various spray parameters. This paper aims to investigate the influence of the particle velocity, the particle temperature and the spray atmosphere on the decarburisation reactions and phase changes that take place during spraying. XRD and SEM used BSE image processing to characterize and quantify these responses. A comparison between temperature and speed measurements as well as the XRD results showed that the decarburisation is influenced not only by the temperature but also by the residence time and the entrainment of oxygen. Paper includes a German-language abstract.
Corrosion Behavior in Seawater of WC-Co Coatings Obtained by HVOF and APS
Authors: Richard C. , Béranger G. , Merlier F. , Dalmas D. , Lu J. 
Published: May 2022

Abstract
The main aim of this paper is the evaluation of the electrochemical behavior of the WC-Co layers. In this paper, which lies within the scope of a general characterization of coatings WC-Co, a particular point is related to the electrochemical behavior in sea water of these deposits projected by APS and Jet-Kote in relation to their microstructure. The paper shows a different corrosion resistance of the APS and HVOF coatings. In addition, it is observed that the durability of the applications was strongly temperature-dependent. Paper includes a German-language abstract.
Electrochemical Measurements and Characterisation of a Thermal Sprayed HVOF Cr3C2-NiCr Coating in a Corrosive Environment
Authors: Guilemany J.M. , Fernández J. , Delgado J. 
Published: May 2022

Abstract
This paper presents the electrochemical characterization of a chromium carbide-NiCr coating applied using high-speed flame spraying. It examines the behavior of the complete system, the steel, the steel coating, and the coating immersed in NaCl solution alone. The paper discusses electrochemical measurement methods such as the measurement of polarization resistance, anodic polarization, and open circuit potential. The tests are compared with each other and with results from metallographic examinations. The structure was characterized by light and scanning microscopy. In addition, an analysis of the residual water was carried out using an ICP technique. The paper also includes a study of the various mechanisms that could affect the behavior of such coating types in a corrosive environment. Paper includes a German-language abstract.
Comparison of Erosion-Corrosion and Wear Resistance of HVOF Sprayed Coatings with Different Types of Carbides
Authors: Rogne T. , Berget J. , Solem T. 
Published: May 2022

Abstract
This paper compares three thermally sprayed coatings with different carbide types in a NiCr matrix (25% by volume) with regard to their erosion, corrosion, and wear resistance. The three types of carbide are WC, chromium carbide, and TiC. The coatings were sprayed with the Sultzer-Metco Diamond-Jet 2600 equipment. All coatings were produced with the same spray parameters. If the sand particles hit the surface at high angles of impact, the WC coating is better than the other two coatings in terms of erosion/corrosion resistance. Micro-abrasive wear tests also showed the WC coating was superior (slightly better than the TiC coating). The corrosion properties of the coatings were almost the same. Paper includes a German-language abstract.
Mathematical Modeling of Splat Formation at Off-Normal Angles in Thermal Spray
Authors: Fukanuma H. , Li C.-J. 
Published: May 2022

Abstract
This paper proposes a mathematical model for spatter formation at abnormal spray angles in thermal spraying. It is found that the splashes become elliptical when the spray angles are abnormal, and that the ellipse stretches the more the angle deviates from the perpendicular. The model was used to compare test results of the splash elongation at anomalous angles of impact. Paper includes a German-language abstract.
A Mechanism of the Splashing During Droplet Splatting in Thermal Spraying
Authors: Li C.-J. , Li J.-L. , Wang W.-B. , Fu A.-J. , Ohmori A. 
Published: May 2022

Abstract
The flattening of droplet impacting on a substrate is one of the most important basic processes during the formation of a thermal spray coating. The structure of splat will determine the structure of coating, and consequently the adhesion and properties of coating. This paper investigates the dependency of the change of the morphologies of splats from irregularly complicated form to regular disk form by the preheating of substrate on the types of evaporable substances adsorbed on substrate surface in order to provide farther evidence for the evaporated gas induced splashing mechanism. Paper includes a German-language abstract.
Optimization of Thermal Barrier Coatings Sprayed by the PlazJet Plasma Gun
Authors: Sacriste D. , Goubot N. , Dhers J. , Vardelle A. 
Published: May 2022

Abstract
Thermal Barrier Coatings (TBCs) are commonly used in aeronautics for both thermal and corrosion resistance. The PlazJet is a high power plasma torch designed by TAFA. Optimization of plasma sprayed coatings needs to realize a lot of experiments considering the large number of process parameters, so systematic experimentation becomes very long and expensive. Optimization methods such as the Taguchi methodology have been commonly used in the Thermal Spray industry. This paper presents an optimization of TBC sprayed by PlazJet according to the Taguchi method. It discusses coating properties such as application efficiency, thickness, density, surface shape, and adhesion in order to correlate these with variations in the process parameters. The paper also presents optimized parameters for this special application. Paper includes a German-language abstract.
Fracture Mechanism of Thick Thermal Barrier Coating
Authors: Takahashi M. , Saitoh M. , Takaishi K. , Kawasaki T. 
Published: May 2022

Abstract
Thermal barrier coating (TBC) is a technology for preventing the rise in surface temperature of the metal substrate by coating a ceramic with low thermal conductivity for the hot section components such as blades, nozzles and combustion chambers. In this paper, for some types of thick TBC specimen which had zirconia based ceramic top coat of 600 micrometer in order to improve the thermal insulation performance, thermal cycle property and heat flux are examined by using thermal simulating facility by gas burner heating. The paper also discusses fracture mechanism of the thick TBC. Paper includes a German-language abstract.
Thermal Fatigue Characteristics of the Membrane Formed by the Plasma Spraying of ZrO2-NiCrAIY
Authors: Sonoya K. , Li C.-J. , Tobe S. 
Published: May 2022

Abstract
This paper focuses on the mechanism responsible for crack expansion and contraction: the behavior of cracks in the ceramic bed of zirconium dioxide membranes formed by plasma spraying, and the thermal stresses caused by differences in thermal expansion factors between the base material and sprayed bed, under a thermally cyclic environment. The test sample was prepared by spraying NiCrAlY on a stainless-steel base material to form a substrate membrane, then covering it with sprayed 8YSZ (zirconium dioxide-type ceramic). To clarify the self-recoverability of fatigue cracks caused during the thermal cycle, membrane cracking and crack expansion/contraction is studied. Paper includes a German-language abstract.
Characterization of the Thermal Spray Coatings Having Amorphous and Nanocrystalline Structure
Authors: Shmyreva T. , Ivanov A. 
Published: May 2022

Abstract
In this paper, the morphology, the microstructure, the thermal stability ranges, the devitrification kinetics, and the hardness of amorphous detonation sprayed FeCrPC coatings are examined and compared with those of amorphous tapes of similar composition. Nanocoatings were made by heat treating the amorphous coatings. It is observed that thermal spraying (using the detonation gun method) produced coatings with an improved thermal stability of the amorphous component. Paper includes a German-language abstract.
Development of Scuffing Phenomena in Detonation Sprayed Coatings
Authors: Antoszewski B. , Otmanianowski T. , Zórawski W. 
Published: May 2022

Abstract
Detonation sprayed coatings are nowadays applied on many kinds of heavily loaded sliding pairs and in the case high-speed machines. The basic problem in such applications lies in their durability and their scuffing resistance. Detonation sprayed coatings have a different in comparison with other junction surfaces microstructure and their behaviour in boundary condition let us better estimate possibilities of their application. This paper deals with the findings from experiments with regard to the seizure phenomenon when the friction pairing embodies an element with detonation-sprayed coatings. The progression of seizure is examined and evaluated for a number of aluminum oxide-13 titanium dioxide WC-Co 88/12 coatings that were applied to steel by means of detonation spraying. Paper includes a German-language abstract.
Effect of Wetting and Surface Phenomena on Development of Coatings in Thermal Spraying
Authors: Sobolev V.V. , Guilemany J.M. 
Published: May 2022

Abstract
Wetting between the spreading droplet and the substrate plays an important role in the droplet flattening because it affects not only the surface effects but also the contact thermal resistance at the splat-substrate interface which is an important parameter for the development of the coating structure. In this paper, analytical formulas are determined which show the influence of wetting phenomena on the thickness or the radius of the splash, on the pressure developed upon drop impact and on the splash porosity. An effect of surface tension on the flattening parameters is investigated. The results obtained show good agreement with the experimental data. Paper includes a German-language abstract.
Evaluation of Residual Stresses in Thermal Sprayed Coatings
Authors: Berreth K. , Buchmann M. , Gadow R. , Tabellion J. 
Published: May 2022

Abstract
Thermal spraying offers the possibility of applying functional metal, ceramic or cermet coatings to components with different geometries and materials and significantly improving their thermal, mechanical, and chemical properties. The performance in operation as well as failure due to deformation, cracks, and delamination are mostly determined by the internal stress state within the coated components. This paper reviews coating developments on light metal and glass substrates, sprayed with different atmospheric plasma spray process spray parameters are reviewed. The results show that from the numerical and experimental residual stress analysis, the injection parameters can be influenced individually. This leads to optimized residual stress states in the coated components with regard to the expected operating loads. Paper includes a German-language abstract.
Thermally Sprayed Multilayer Coatings as Electrodes and Dielectrics in High Efficiency Ozonizer Tubes
Authors: Friedrich C. , Gadow R. , Killinger A. 
Published: May 2022

Abstract
This paper presents the results of metal dielectric multilayer structures based on aluminum alloys and several oxide ceramics respectively. It investigates thermomechanical and dielectric properties with regard to the use of different powders for thermal spraying as well as a high and a low energy gun for atmospheric spraying. The experimental work of this study is divided into two main parts: the selection of materials and the development of promising coating systems and the manufacturing and testing of novel ozonizer tubes. The investigated coating systems are analysed focusing the application in ozonizers. Therefore, a metallic electrode, an oxide ceramic and the dielectric properties of the metal-ceramic-composite are analysed. Finally, the appropriate metal-ceramic composites are tested in an ozonizer. Paper includes a German-language abstract.
Failure Analysis of Plasma Sprayed ZrO2-CeO2-Y2O3 Thermal Barrier Coatings
Authors: Kim H.K. , Choi H.S. , Lee C.H. 
Published: May 2022

Abstract
This paper aims to clarify the thermal and mechanical properties of zirconium dioxide-cerium(IV) oxide-yttrium oxide and zirconium dioxide-yttrium oxide plasma sprayed coatings. such as phase transformation, bond coat oxidation, and thermal expansion mismatch. Both coatings showed a 7 to 11% porosity fraction and typical lamellar structure, which formed due to continuous wetting by liquid droplets. It is observed that the zirconium dioxide-cerium(IV) oxide-yttrium oxide coating turned out to be better than the zirconium dioxide-yttrium oxide because there was no phase change from the tetragonal to the monoclinic phase (which leads to a spatial expansion), because there was a smaller thermal expansion offset and the effect of the oxide growth stress the better thermal insulation was relatively small. Paper includes a German-language abstract.