MACROSCOPIC AND MICROSCOPIC WEAR MECHANISMS IN ULTRA-HIGH-MOLECULAR-WEIGHT POLYETHYLENE
MACROSCOPIC AND MICROSCOPIC WEAR MECHANISMS IN ULTRA-HIGH-MOLECULAR-WEIGHT POLYETHYLENE
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DOI：
10.1016/0043-1648(93)90521-m
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发表时间：
1993-04-13
期刊：
影响因子：
5
通讯作者：
FISHER, J
中科院分区：
文献类型：
--
作者：
COOPER, JR;DOWSON, D;FISHER, J
在销-盘和销-板试验、髋关节模拟器和患者部件中，对超高分子质量聚乙烯在相对光滑的金属和陶瓷对接表面上滑动的广泛摩擦学条件下的磨损进行了研究，证明了两种不同类型的磨损过程。微观磨损过程与非常小的粗糙表面或光滑的对接表面(小于0.2微米)有关。宏观的聚合物粗糙度磨损过程与聚合物表面较大的峰值(幅度小于10微米)下的应力集中有关。对于表面较粗糙的恒定载荷试验，微观粗糙磨损占主导地位。然而，对于光滑的对面(R(A))
Studies of the wear of ultra-high molecular weight polyethylene sliding on relatively smooth metallic and ceramic counterfaces under a wide range of tribological conditions in pin-on-disc and pin-on-plate tests, hip joint simulators and components taken from patients, have demonstrated evidence for two separate types of wear processes. Microscopic wear processes were associated with the very small asperities or the smooth counterfaces (less than 0.2 mum). Macroscopic polymer asperity wear processes were associated with stress concentrations under the much larger peaks in the polymer surface (amplitude less than 10 mum). For constant load tests with rougher counterfaces, microscopic asperity wear dominated. However for smooth counterfaces (R(a)