In this study, suspension plasma spraying is used to deposit pseudo eutectic alumina-yttria stabilized zirconia as a potential thermal barrier coating. Process variables including feed rate, powder size, and plasma gas composition were altered to determine the influence of spray parameters on the formation of phases in the composite coating. The most significant variable was found to be the auxiliary gas. The gas influences the formation of phases primarily through its effect on in-flight particle velocity.

Al2O3-YSZ composite coatings, in-flight particle velocity, phase formation, plasma gas composition, suspension plasma spraying, thermal barrier coatings
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Copyright © 2009 ASM International. All rights reserved.
2009
ASM International
Topics
Thermal barrier coatings Particle analysis Alumina ceramics Yttria-stabilized zirconia Suspension plasma spray coating Phase constituents
Issue Section:
Nanostructured Materials
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