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| Corrosion Resistance of Three Kinds of Abradable Seal Coatings |
| Received:April 11, 2017 Revised:June 15, 2017 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2017.06.018 |
| KeyWord:abradable seal coating corrosion resistance salt spray thermal-humidity |
| Author | Institution |
| PAN Qiao |
Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, AECC Beijing Institute of Aeronautical Materials, Beijing , China |
| ZHANG Qi |
Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, AECC Beijing Institute of Aeronautical Materials, Beijing , China |
| WANG Lu |
AECC Liming Aero-engine Corporation, Shenyang , China |
| ZHANG Xing-hua |
Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, AECC Beijing Institute of Aeronautical Materials, Beijing , China |
| LIU Ming |
Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, AECC Beijing Institute of Aeronautical Materials, Beijing , China |
| SUN Zhi-hua |
Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, AECC Beijing Institute of Aeronautical Materials, Beijing , China |
| GAO Meng |
Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, AECC Beijing Institute of Aeronautical Materials, Beijing , China |
| GAO Jian |
Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, AECC Beijing Institute of Aeronautical Materials, Beijing , China |
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| Abstract: |
| Objective To research the corrosion resistance of three kinds of abradable seal coatings, including AHБ, CuAl/NiC and NiCrAl/NiC. Methods The corrosion resistance of the three kinds of coatings was analyzed by salt spray test, thermal-humidity test and immersion test, in combination with electrochemical testing. Results After salt spray test of 545 hours, NiCrAl/NiC coating revealed a relatively better property compared to that of AHБ and CuAl/NiC since a macro crack was found on AHБ coating and coating pill-off happened on CuAl/NiC; no obvious change was found during 10 days’ thermal-humidity test; while after 15 days’ immersion test, NiCrAl/NiC coating still showed a more stable situation than the other two coatings; the electrochemical results also provided a reliable evidence that NiCrAl/NiC had the best corrosion resistance among those three kinds. Conclusion The NiCrAl/NiC coating has relatively better corrosion resistance compared to that of AHБ and CuAl/NiC coatings. |
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