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| Effect of hardness on the abradability of nickel-graphite sealing coatings |
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Received:September 04, 2024
Revised:December 10, 2024
Accepted:January 14, 2025
Published Online:August 05, 2025
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| DOI： |
| KeyWord:Sealing coating;hardness; abradability; abradability testing machine; performance evaluation |
| Author | Institution |
| Li Zhongping |
Shanxi University of Applied Science and Technology |
| Zhao Xinwo |
Shanxi University of Applied Science and Technology |
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| Abstract: |
| This paper adopts the method of simulating the real aero-engine working condition, using the BGRIMM-ATR high temperature and ultra-high speed abrasive testing machine to carry out the simulated working condition abrasive experiments on nickel-graphite sealing coatings under different hardness conditions, to study the effect of hardness change on the abrasive properties of nickel-graphite sealing coatings, and to analyze the optical and scanning electronic morphology of the coatings, and to evaluate the abrasive properties by using a variety of means of characterization. The results show that the surface hardness of the nickel-graphite sealer coating has a strong negative correlation with the wearability at 480℃, line speed of 400m/s, feed speed of 50μm/s and feed depth of 500μm, i.e., the higher the surface hardness of the nickel-graphite sealer coating is, the lower the wearability performance is. |
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