It was found that the content of impurity oxides in 7YSZ, such as SiO2 and Al2O3, has a significant effect on the coating sintering resistance and phase stability of 7YSZ thermal barrier coatings (TBCs). The reduction of the impurity content will significantly improve the sintering resistance and phase stability of 7YSZ TBCs and thus allow the 7YSZ TBCs to be used at higher temperatures.

phase stability, silica, sintering resistance, thermal barrier coatings, thermal spraying, yttria-stabilized zirconia
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Copyright © 2007 ASM International. All rights reserved.
2007
ASM International
Topics
Thermal barrier coatings Yttria-stabilized zirconia Thermal spray coating
Issue Section:
Ceramics and Thermal Barrier Coatings
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