The properties and wear behavior of HVOF spray coating layer of Co-alloy powder

조동율; 천희곤; 윤재홍; 김길수; 윤석조; 백남기

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자료유형: 학술저널

저자정보: 조동율 천희곤 윤재홍 김길수 윤석조 백남기

저널정보: 한국결정성장학회 한국결정성장학회지 한국결정성장학회지 제16권 제6호

발행연도: 2006.1

수록면: 273 - 277 (5page)

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연구주제

📖

연구배경

🔬

연구방법

🏆

연구결과

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High velocity of oxy-fuel (HVOF) thermal spray coating is progressively replacing the other classical hard coatings such as chrome plating and ceramic coating by the classical methods, since the very toxic Cr6+ ion is well known as carcinogen causing lung cancer, and the ceramic coatings are brittle. Co-alloy T800 powder is coated on the Inconel 718 substrates by the HVOF coating procesess developed by this laboratory. For the study of the possibility of replacing of chrome plating, the wear properties of HVOF Co-alloy T800 coatings are investigated using the reciprocating sliding tester with a counter sliding SUS 304 ball both at room and at an elevated temperature of 1000oF (538oC). The possibility as durability improvement coating is studied for the application to the high speed spindles vulnerable to frictional heat and wear. Wear mechanisms at the reciprocating sliding wear test are studied for the application to the systems similar to the sliding test such as high speed spindles. Wear debris and frictional coefficients of T800 coatings both at room and at an elevated temperature of 538oC are drastically reduced compared to those of non-coated surface of Inconel 718 substrates. Wear traces and friction coefficients of both coated and non-coated surfaces are drastically reduced at a high temperature of 538oC compared with those at room temperature. These show that the coating is highly recommendable for the durability improvement coating on the surfaces vulnerable to frictional heat and wear.

#HVOF #Co-alloy T800 #Sliding wear test #Solid and liquid lubricant

참고문헌 (11)

참고문헌 신청

/ / HVOF thermalspray coatings as an alternative to hard chrome platingon military & commercial aircraft

/ / WC-Co HVOF thermal spray coating for durability improvement of high speed spindle

/ / Wear behavior of Co-alloy T800 coating pre-pared by HVOF thermal spraying

/ 2000 / The effect of post heat treatment on the wear resistance of the TiC-Fe coating fabricated by HVOF proces 38

/ 2003 / Coating properties of nano structured WC-Co for pro-cess variables of HVOF 41

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