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| Computer Simulation of Thermal- Shocking Property for ZrO2/Mullite Thermal Barrier Coatings |
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Received:February 22, 2020
Revised:February 23, 2020
Accepted:February 24, 2020
Published Online:July 16, 2020
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| DOI： |
| KeyWord:Thermal barrier coatings; Finite-element simulation; Single layer thickness; Thermal stress |
| Author | Institution |
| Jia Yan |
School of Art and Design,Hebei Institute of Communication College |
| ZHAO Yong-tao |
School of Mechanical Engineering,Henan University of Engineering |
| ZHANG Hong-song |
School of Mechanical Engineering,Henan University of Engineering |
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| Abstract: |
| In order to select the appropriate thickness of single layer for ZrO2-mullite thermal barrier coatings, the influence of thickness of single-layer on thermal-shocking property for ZrO2/ mullite thermal barrier coatings was studied by finite-element technology. Results exhibit that there is the most thermal-stress in coatings when the thickness of mullite-layer is about 0.25mm, and thermal stress in ZrO2/ mullite thermal barrier coatings is not effected by mullite-layer thickness for other cases. The thermal-stress remains stable in the scope of entire radial-distance when ZrO2-thickness is about 0.3mm, and thermal stress is proportional to the thickness of ZrO2-layer for other ZrO2-layr thickness. The thermal stresses on surface-layer are greater than those of ZrO2/mullite interface. |
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