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Thermal and Mechanical Properties of Plasma Sprayed ZrO2-CeO2-Y2O3 Coatings
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Abstract
Plasma sprayed ZrO2-CeO2 and ZrO2-CeO2-Y2O3 coatings were investigated to develop advanced thermal barrier coating (TBC) with improved thermal and mechanical properties. The addition of a large amount of CeO2 to ZrO2 decreased the thermal conductivity, but it also reduced the mechanical property like hardness. Addition of Y2O3 to ZrO2-CeO2 was effective to improve the hardness. Double layered coating composed of a low thermal conductive top layer, such as ZrO2-CeO2-Y2O3 and a high strength base layer like yttria stabilized zirconia was fabricated. It exhibited an excellent thermal shock resistance and high thermal barrier capability.
ASM International
Title: Thermal and Mechanical Properties of Plasma Sprayed ZrO2-CeO2-Y2O3 Coatings
Description:
Abstract
Plasma sprayed ZrO2-CeO2 and ZrO2-CeO2-Y2O3 coatings were investigated to develop advanced thermal barrier coating (TBC) with improved thermal and mechanical properties.
The addition of a large amount of CeO2 to ZrO2 decreased the thermal conductivity, but it also reduced the mechanical property like hardness.
Addition of Y2O3 to ZrO2-CeO2 was effective to improve the hardness.
Double layered coating composed of a low thermal conductive top layer, such as ZrO2-CeO2-Y2O3 and a high strength base layer like yttria stabilized zirconia was fabricated.
It exhibited an excellent thermal shock resistance and high thermal barrier capability.
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