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| Transient Ultra-high Temperature Erosion Resistance of Plasma Spray YSZ Coatings |
| Received:February 03, 2016 Revised:June 15, 2016 |
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| DOI：10.7643/ issn.1672-9242.2016.03.005 |
| KeyWord:transient ultra-high temperature YSZ coating erosion resistance HVOF |
| Author | Institution |
| CUI Yong-jing |
Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, Beijing Institute of Aeronautical Materials, Beijing , China |
| LU Feng |
Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, Beijing Institute of Aeronautical Materials, Beijing , China |
| GAO Jun-guo |
Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, Beijing Institute of Aeronautical Materials, Beijing , China |
| ZHANG Huan-huan |
Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, Beijing Institute of Aeronautical Materials, Beijing , China |
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| Abstract: |
| Objective To study the transient ultra-high temperature erosion resistance of plasma spray YSZ coatings. Methods The transient ultra-high temperature erosion test on APS YSZ coating was carried out with high temperature and high speed flame generated high velocity oxygen fuel spraying equipment, and the impaction was simulated by feeding the alumina particles. Then the transient ultra-high temperature erosion resistance of coating was evaluated by conventional means. The failure mechanism of the coating was investigated according to the microscopic analysis. Results Under the test condition of 3000 K and no particle addition, the steel substrate boiled after 3 s of flame erosion, while the YSZ coating with 0.6 mm thickness was integral after 60 s of flame erosion. Under the test condition of 3000 K and particles addition, the steel substrate was impacted to generate about 1 mm deep pits after 3 s of flame erosion, the YSZ coating with 0.6 mm thickness was peeled off without substrate damage, and the YSZ coating with 1.0 mm thickness was still partially retained. Conclusion APS YSZ coating with 1.0 mm thickness could protect the substrate effectively from the transient ultra-high temperature erosion at up to 3000 K. |
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