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Tribological Wear Behavior of PTFE Impregnated with Cu Nano Particles  

Kim, S.Y. (부경대학교 기계시스템공학과)
Kim, E.B. (부경대학교 대학원)
Q., Yoo (부경대학교 대학원)
Ju, C.S. (부경대학교 화학공학과)
Publication Information
Journal of Power System Engineering / v.14, no.4, 2010 , pp. 50-55 More about this Journal
Abstract
In order to investigate tribological effects of nano copper particles impregnated(CuN) on surface polytetrafluoroethylene(PTFE) on sealing wear and an experimental study was carried out to determine the wear behavior of copper nano-particles impregnation two kind thickness in super critical $CO_2$ liquid. Experimental results showed that the friction coefficients of CuN PTFE at the low sliding speed(0.44m/s) and the oil temperature ($60^{\circ}C$) were higher than that of virgin PTFE. And a thin nano copper particles impreganated thickness was formed on the surface in the PTFE and the specimen with this treatment has much better friction properties than the original one. Fortunately, at the high load(80 N) and the oil temperature, the friction coefficient of CuN PTFE was lower than that of virgin PTFE. This evidenced the load carrying capacity of CuN PTFE was much better than that of virgin PTFE under the high load condition(80 N) specially. Therefore, it can be concluded that the friction coefficient variation of CuN PTFE is very small but its wear rate decreases greatly with increase in sliding speed.
Keywords
PTFE; Copper Nano Particles; Impregnation; Tribological Wear; Sliding Load and Velocity;
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