The thermal expansion characteristics of plasma-sprayed coatings were investigated. The thermal expansion measurements were carried out up to 1200°C on thick coatings that were substrate free. The effects on the thermal expansion coefficients were studied in terms of composition, powder size, porosity, and the phase transformation. The relationships between the thermal shock resistance and the thermal expansion properties of the coatings are also discussed.

coating thickness, plasma sprayed coatings, thermal expansion characteristics, thermal shock resistance
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Copyright © 1998 ASM International. All rights reserved.
1998
ASM International
Topics
Plasma spray coating Thermal shock resistance Thermal expansion
Issue Section:
Thermal Barrier Coatings
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