This study investigates the influence of plasma gas composition on deposition efficiency achieved during atmospheric plasma spraying and the properties of the resulting deposits. In the experiments, ternary mixtures of argon, hydrogen, and helium are used in different combinations and flow rates to spray Al2O3-TiO2 and ZrO2-Y2O3 powders on test substrates while measuring deposition efficiency. Several coating properties are measured, including porosity, hardness, and bond strength, and correlated with plasma gas ratios. Paper text in German.

atmospheric plasma spraying, bond strength, ceramic coatings, plasma gas composition, porosity
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Copyright © 2002 Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH. All rights reserved.
2002
Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH
Topics
Oxide-based ceramics Plasma spray coating Bonding strength Porosity
Issue Section:
Poster Session: Influence of Gases and Powders
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