Comparison of HVOF Thermal Spray Coatings of T800 and WC-Co Powders
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Hard chrome plating has been used in surface hard coating over 50 years both for applying hard coating and re-building of worn components. Hard chrome plating solution and mist pollute environment with very toxic Cr6+(hex-Cr) known as carcinogen which causes lung cancer. High velocity oxy-fuel (HVOF) thermal spray coatings of WC base cermet and Co-alloy powders are the most promising candidates for the replacement of the traditional hard chrome plating. Surface properties, wear, and friction behaviors of micron size Co-alloy (T800) and micron size WC-12Co (WC-Co) have been studied for the application as hard coatings. The temperature dependence of wear and friction behaviors of T800 and WC-Co have been investigated at the temperature of 25oC and 538oC for the application to high speed spindle.
Abstract
Hard chrome plating has been used in surface hard coating over 50 years both for applying hard coating and re-building of worn components. Hard chrome plating solution and mist pollute environment with very toxic Cr6+(hex-Cr) known as carcinogen which causes lung cancer. High velocity oxy-fuel (HVOF) thermal spray coatings of WC base cermet and Co-alloy powders are the most promising candidates for the replacement of the traditional hard chrome plating. Surface properties, wear, and friction behaviors of micron size Co-alloy (T800) and micron size WC-12Co (WC-Co) have been studied for the application as hard coatings. The temperature dependence of wear and friction behaviors of T800 and WC-Co have been investigated at the temperature of 25oC and 538oC for the application to high speed spindle.
참고문헌 (8)
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- "Handbook of Thermal Spray Technology", pp.1~30 (2004)
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- "Kor. Soc., Machine Tool Engineers" (2006)
- "Am. Soc. for Metals", pp.600~ (1986)
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