초고속 스핀들의 내구성 향상을 위한 WC-Co 분말의 HVOF 용사 코팅

김길수; 백남기; 윤재홍; 조동율; 윤석조; 오상균; 황순영; 천희곤

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자료유형: 학술저널

저자정보: 김길수 백남기 윤재홍 조동율 윤석조 오상균 황순영 천희곤

저널정보: 한국표면공학회 한국표면공학회지 한국표면공학회지 제39권 제4호

발행연도: 2006.8

수록면: 179 - 189 (11page)

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2006

초고속 스핀들의 내구성 향상을 위한 WC-Co 분말의 HVOF 용사 코팅

김길수 , 백남기 , 윤재홍 외 5명 한국표면공학회지 2006.08 학술저널

초고속 회전체의 내구성 향상의 위한 WC-120Co 분말의 HVOF 용사 코팅

김길수 , 백남기 , 박봉규 외 3명 한국표면공학회 학술발표회 초록집 2006.04 학술대회자료

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High velocity oxygen fuel(HVOF) thermal spray coating of WC-Co powder is one of the most promising candidate for the replacement of the traditional hard chrome plating and ceramics coating because of the environmental problem of the very toxic Cr6+ known as carcinogen and the brittleness of ceramics coating. WC-Co micron and nano powder were coated by HVOF thermal spraying method for the study of durability improvement of the high speed spindle. Coatings were planned by Taguchi program for the four spray parameters of spray distance, flow rates of hydrogen, oxygen and powder feed rate. Optimal coating process was obtained by the studies of coating properties such as porosity, surface roughness, micro hardness, and microstructure. WC-Co micron and nano powder were coated on the Inconel 718 substrate by the optimal coating process obtained in this study. The wear behaviors were studied by the sliding wear tester at room temperature and at an elevated temperature of 500°C for the application to high speed spindle. Sliding wear test was carried out for four most promising hard coatings of chrome coating, ceramics coatings such as Al₂O₃, Cr₂O₃ and HVOF Co-alloy T800 for the comparison of their wear behaviors. HVOF WC-Co coating was better than other coatings showing highest micro hardness of 1400 Hv and comparable friction coefficients with others. HVOF WC-Co coating is a strong candidate for the replacement of the traditional hard chrome plating for the high speed spindle.

#WC-Co #Wear resistance #Thermal spraying #HVOF #High speed spindle

참고문헌 (8)

참고문헌 신청

[학술지(정기간행물)] - / 2006 / HVOF Thermal Spray coatings Replace Hard Chrome

[학술지(정기간행물)] - / April2004. / Validation of HVOF WC/Co Thermal Spray Coatings as a Replacement for Hard Chrome Plating on Aircraft Landing Gear

[학술지(정기간행물)] - / 1999 / HVOF Thermal Spray Coatings as an Alternative to Hard Chrome Plating on Military & Commercial Aircraft AESF/ EPA Conference for Environmental Excellence

[학술지(정기간행물)] - / 2005 / Joint Group on Pollution Prevention

[학술지(정기간행물)] - / 2004 / Handbook of Thermal Spray Technology

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