Wright K W, Dobbs H S, Scales J T
Biomaterials. 1982 Jan;3(1):41-8. doi: 10.1016/0142-9612(82)90060-6.
The wear of ultra high molecular weight polyethylene in combination with cobalt-chromium-molybdenum alloy was investigated by pin-on-disc experiments in which the alloy pin was loaded against the rotating polyethylene disc. In some experiments the pin was stationary, but in others it rotated about its axis. The effect of lubricant type, pin rotation, magnitude of the applied load, magnitude of the relative surface velocity, and disc storage in various environments was investigated. Wear of the polyethylene was assessed at 100 h intervals by both volumetric and gravimetric methods. Each experiment lasted 1000 h. It was concluded that of the lubricants tested bovine serum was the most suitable and that pin rotation produced more suitable polyethylene surfaces than did the stationary pin. The wear rate increased slightly with load (possibly owing to creep), was insensitive to speed, and was not affected by disc storage. The dynamic coefficient of friction increased with running tme. Results obtained by the two wear assessment methods were comparable and the reproducibility of the results was good.
通过销盘实验研究了超高分子量聚乙烯与钴铬钼合金的磨损情况，实验中合金销与旋转的聚乙烯盘相互加载。在一些实验中销是固定的，但在其他实验中销绕其轴旋转。研究了润滑剂类型、销的旋转、施加负载的大小、相对表面速度的大小以及盘在各种环境中的储存情况的影响。通过体积法和重量法每隔100小时评估一次聚乙烯的磨损情况。每个实验持续1000小时。得出的结论是，在所测试的润滑剂中，牛血清是最合适的，并且销的旋转比固定销产生更合适的聚乙烯表面。磨损率随负载略有增加（可能由于蠕变），对速度不敏感，并且不受盘储存的影响。动摩擦系数随运行时间增加。两种磨损评估方法获得的结果具有可比性，并且结果的可重复性良好。
