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| Performance Optimization of New High Temperature Ceramic Coating on Hot End Part Surface of Aero-engine |
| Received:January 26, 2024 Revised:March 26, 2024 |
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| DOI：10.7643/issn.1672-9242.2024.06.011 |
| KeyWord:high temperature ceramic coating superalloy aircraft engine glass ceramic anti-spalling |
| Author | Institution |
| FENG Chi |
Beijing Tianlichuang Glass Technology Development Co., Ltd., Beijing , China |
| YANG Bin |
AECC Guizhou Liyang Aviation Power Co., Ltd., Guiyang , China |
| LEI Qiang |
AECC Guizhou Liyang Aviation Power Co., Ltd., Guiyang , China |
| WANG Jianfeng |
Beijing Tianlichuang Glass Technology Development Co., Ltd., Beijing , China |
| ZOU Feng |
Beijing Tianlichuang Glass Technology Development Co., Ltd., Beijing , China |
| DUAN Sujie |
Beijing Tianlichuang Glass Technology Development Co., Ltd., Beijing , China |
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| Abstract: |
| The work aims to improve the long-term protective coating W-200 on the hot end part surface of aero-engine, and explore a new high-temperature ceramic coating on the superalloy surface with better high temperature stability and not easy to collapse so as to solve the problem of brittle porcelain and peeling exposed by W-200 coating on the superalloy surface. By adjusting expansion coefficient, softening temperature and crystallization temperature, new high-temperature resistant glass and filler were developed, and new high-temperature ceramic coating slurry was prepared. The new high-temperature ceramic coating W-400 could be successfully sintered on the superalloy surface at 1 150~1 230 ℃, and had a larger expansion coefficient, which could better match the expansion coefficient of superalloy substrate. At the same time, the crystallization temperature of W-400 was about 868~1 213 ℃, and the coating had better high-temperature stability, thermal shock resistance and resistance than W-200 in the crystallization temperature range. The new high-temperature ceramic coating W-400 solves the problem that W-200 high-temperature ceramic coating is likely to collapse after sintering on the hot end superalloy alloy parts surface of aeroengine. According to the research foundation of this project, it is possible to develop a new type of high-temperature ceramic coating with higher temperature resistance that can be successfully sintered on other metal surfaces at 1 250~1 400 ℃ in the future. |
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