Results 241 to 250 of about 3,420 (292)
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Atmospheric Plasma Spray Process Control
International Thermal Spray Conference, 2008Abstract Parametric drifts and fluctuations occur during plasma spraying. These drifts and fluctuations originate primarily from electrode wear and intrinsic plasma jet instabilities. One challenge is to control the manufacturing process by identifying the parameter interdependencies, correlations and individual effects on the in-flight ...
A.-F. Kanta +5 more
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Modified Nozzle for the Atmospheric Plasma Spraying
International Thermal Spray Conference, 2003Abstract A modified Laval-like-contour for a convergent-divergent nozzle is presented for the Atmospheric Plasma Spraying (APS). The influence of the nozzle design on the thermal and deposition efficiency as well as on the arc voltage fluctuations and the sound level of the plasma torch are investigated and compared with former ...
A. Schwenk, G. Nutsch, H. Gruner
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Effects of Plume Quenching on Controlled Atmosphere Plasma Sprayed Metals
International Thermal Spray Conference, 2023Abstract Thermal spray processes benefit from workpiece cooling to prevent overheating of the substrate and to retain metallurgical properties (e.g., temper). Cold-gas “plume quenching” is a plume-targeting cooling technique, where an argon curtain is directed laterally above the substrate surface to re-direct high temperature gases ...
Emma Peleg, Andrew Vackel
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Oxidation control in atmospheric plasma spraying coating
Surface and Coatings Technology, 2007Thermal spray coatings are formed by successive impingements and interbonding materials among the splats, solidified individual molten particles. Depending on the processing conditions employed during the spray process, deposits are produced with an assortment of microstructures and properties.
M.P. Planche, H. Liao, C. Coddet
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Development of YBCO coatings by atmospheric plasma spraying
Journal of the European Ceramic Society, 2000Abstract Superconducting Y–Ba–Cu–O thick films were produced by the atmospheric plasma spraying method. The effect of processing parameters (powder characteristics, spraying parameters) on the coatings properties was studied. X-ray diffraction analysis, SEM studies combined with EDS microanalysis and scratch test experiments were carried out in order
Elias Georgiopoulos, Athena Tsetsekou
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International Thermal Spray Conference, 2000
Abstract Plasma spraying is a very complex process, controlled by a large number of process parameters. The spray gun parameters control the plasma plume and thereby the velocity and temperature of the particles in the plasma. Some of the spray gun parameters are difficult or impossible to control, but variations of them give rise to ...
M. Friis, C. Persson, J. Wigren
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Abstract Plasma spraying is a very complex process, controlled by a large number of process parameters. The spray gun parameters control the plasma plume and thereby the velocity and temperature of the particles in the plasma. Some of the spray gun parameters are difficult or impossible to control, but variations of them give rise to ...
M. Friis, C. Persson, J. Wigren
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Production of biocompatible coatings by atmospheric plasma spraying
Materials Science and Engineering: A, 1991Abstract This work deals with the formation of biocompatible coatings on implants such as artificial hips or teeth. Various techniques improving the bond between the natural bone and the plant to extend lifetime and to improve performance have been developed in the past.
E. Lugscheider +3 more
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Characterization of Lithium Phosphate Deposit by Atmospheric Plasma Spraying
International Thermal Spray Conference, 2021Abstract Plasma spraying was used to deposit Li3PO4 coatings from sintered dense powders in three size ranges to study the effects of particle size and spraying distance. Coating microstructure, crystal structure, and composition were characterized using SEM, XRD, ICP-MS, and FTIR.
Yin-Qiu Sun +3 more
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Reactive atmospheric plasma spray of Al powder
2009 IEEE International Conference on Plasma Science - Abstracts, 2009Reactive plasma spraying (RPS) is based on using reactive plasma to react with feedstock powders. RPS is a promising technology of material processing and coating manufacturing, especial for ceramic coatings like AlN which is expected to contribute to semiconductor equipments and so on, due to its outstanding properties [1]. However, fabrication of AlN
M. Shahien +3 more
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Atmospheric plasma sprayed coatings of nanostructured zirconia
Journal of the European Ceramic Society, 2002Abstract Nanostructured zirconia coating has been fabricated by atmospheric plasma spraying. The microstructure of the coating has been characterized with SEM and XRD, and the microhardness has been measured. The results show ZrO 2 coating possessed two kinds of structure.
Yi Zeng, S.W. Lee, L. Gao, C.X. Ding
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