| HVOF 열용사에 의한 크롬 카바이드 코팅의 마모.마찰거동 |
| 김장엽, 임대순, 이상로1, 변응선1, 이구현1 |
고려대학교 재료공학과
1한국기계연구원 |
| Tribological Behaviors of Chromium Carbide Coatings by HVOF Thermal Spraying |
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| ABSTRACT |
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The optimal coating condition for chrominum carbide coating was selected by Taguchi method. The wear tests with coated specimens by HVOF method were performed in the temperature to 80$0^{circ}C$. Applied normal loads were selected to be from 8N to 30N. The worn surfaces and subsurfaces were characterized by XRD, EPMA, AES and SEM. The wear track increased with increasing applied normal load, and in terms of the temperature range from 400 to $600^{circ}C$, below that range, the wear track increased, and above that temperature ragne, the wear track decreased. The degree of oxidation caused by the test temperature and the frictional heating was responsible to the unique high temperature wear behavior chromium carbide coatings. |
| Key words:
Chrominum carbide, HVOF, High temperature wear, Oxidation wear transition |
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