Higher-temperature operation in a gas turbine has urged development of heat-resistant coatings and thermal barrier coatings. We have developed a 2CaO-SiO2-CaO-ZrO2 based thermal barrier coating. This coating should effectively prevent separation of the coating by relieving the shear stress generated due to thermal change of environment between layers with dissimilar properties. The coating was applied to stationary vanes of an actual gas turbine in a 25,000-hour test. This paper describes the results of the field test.

field test, thermal barrier coatings, turbine vanes, zirconium dioxide
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Copyright © 1997 ASM International. All rights reserved.
1997
ASM International
Topics
Thermal barrier coatings Stationary airfoils Zirconia ceramics
Issue Section:
Thermal Barrier Coatings
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