A Study on the Friction and Wear Properties of Tribaloy 800 Coating by HVOF Thermal Spraying

Tong Yul Cho; Jae Hong Yoon; Kil Su Kim; Suk Jo Youn; Ki Oh Song; Nam Ki Back; Hui Gon Chun; Soon Young Hwang

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자료유형: 학술저널

저자정보: Tong Yul Cho Jae Hong Yoon Kil Su Kim Suk Jo Youn Ki Oh Song Nam Ki Back Hui Gon Chun Soon Young Hwang

저널정보: 한국표면공학회 한국표면공학회지 한국표면공학회지 제39권 제5호

발행연도: 2006.10

수록면: 240 - 244 (5page)

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Tribaloy 800 (T800) powder is coated on the Inconel 718 substrate by the optimal High Velocity Oxy-Fuel (HVOF) thermal spray coating process developed by this laboratory. For the study of the possibility of replacing of the widely used classical chrome plating, friction, wear properties and sliding wear mechanism of coatings are investigated using reciprocating sliding tester both at room and at an elevated temperature of 1000°F (538°C). Both at room temperature and at 538°C, friction coefficients and wear debris of coatings are drastically reduced compared to those of non-coated surface of Inconel 718 substrate. Friction coefficients and wear traces of both coated and non-coated surfaces are drastically reduced at higher temperature of 538°C compared with those at room temperature. At high temperature, the brittle oxides such as CoO, Co₃O₄, MoO₂, MoO₃ are formed rapidly on the sliding surfaces, and the brittle oxide phases are easily attrited by reciprocating slides at high temperature through complicated mixed wear mechanisms. The sliding surfaces are worn by the mixed mechanisms such as oxidative wear, abrasion, slurry erosion. The brittle oxide particles and melts and partial-melts play roles as solid and liquid lubricant reducing friction coefficient and wear. These show that the coating is highly recommendable for the durability improvement coating on the surfaces vulnerable to frictional heat and wear.

#Sliding wear test #Slurry erosion #Melts and partial-melts #Solid and liquid lubricant

참고문헌 (5)

참고문헌 신청

[학술지(정기간행물)] - / 2006 / Machine Tool Engineers : 291 ~ 296

[학술지(정기간행물)] - / 2004 / Handbook of Thermal Spray Technology : 3 ~ 5

[학술지(정기간행물)] - / 2004 / Validation of HVOF WC/Co Thermal Spray Coatings as a Replacement for Hard Chrome Plating on Aircraft Landing Gear : 1 ~ 3

[학술지(정기간행물)] - / 1998 / Thermal Spray Forming of Materials 7 : 408 ~ 419

[학술지(정기간행물)] - / 2006 / A Replacement of Chromium Electroplating on C-2 US department of Defense

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