Comparison of the Wear Behavior of UHMWPE Lubricated by Human Plasma and Brine

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外文摘要：The effect of plasma and brine lubricants on the friction and wear behavior of UHMWPE were studied by using the geometry of a Si_3N_4 ball sliding on a UHMWPE disc under patterns of uni-directional reciprocation and bi-directional sliding motions. The worn surface and wear particles produced in these two lubricants were analyzed. Sliding motion pattern affected the friction coefficients lubricated with plasma, while seldom affected that lubricated with brine. UHMWPE lubricated with plasma showed about half of the wear rate of that lubricated with brine. The two rates were 0.75 pg/m and 2.19 pg/m for the two motion patterns, respectively. However, wear particles generated in plasma included a greater amount of small particles, compared to that in brine. In uni-directional reciprocation, the main wear mechanism is ploughing both in plasma and in brine. In bi-directional sliding modes, the significant characteristic is ripples on the worn surface in plasma, while there are oriented fibers on the worn surface in brine.

外文关键词：

UHMWPEwearlubricationwear particleswear mechanism

作者：

WANG Shi-bo、GE Shi-rong、NORM Gitis、MICHAEL Vinogradov、XIAO Jun

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作者单位：

Institute of Reliability Engineering, China University of Mining & Technology, Xuzhou, Jiangsu 221008, China

出版年：

2007

Journal of China university of mining & technology

ISSN：1006-1266

年,卷(期)：2007.17(3)