JS材料在不同介质润滑下的摩擦学特性

THE TRIBOLOGICAL CHARACTERISTICS OF JS MATERIAL UNDER THE LUBRICATION OF DIFFERENT LUBRICANT MEDIA

作者利用ＭＰＶ－１５００摩擦试验机对ＪＳ材料在２０￣＃机械油、１０￣＃汽油机油、１０Ｗ３０ＣＤ柴油机油、甘油及三乙醇胺润滑下的摩擦、磨损及极限Ｐｖ性能进行了系统研究。结果发现，以上介质润滑均可大大改善ＪＳ材料的摩擦、磨损及极限ＰＶ性能，使其摩擦系数比干摩擦时降低２～３个数量级，磨损量降低１～２个数量级，极限ＰＶ值则提高１个数量级以上。同时，ＪＳ材料在以上五种介质润滑时的极限ＰＶ值均大于１２０ＭＰａ·ｍ／ｓ，约为纯ＰＴＦＥ（聚四氟乙烯）轴承极限ＰＶ值（干摩擦）的１００倍，是巴氏合金轴承在２０＃机械油润滑时极限ＰＶ值的数倍，因而ＪＳ材料在以上介质润滑下可以作为高ＰＶ值的滑动轴承在实际中应用。

The properties of friction,wear and limit PV of JS materhl under the lubrication0f 20￣# mechanical lubricant oil, 10￣# gasoline engine lubricant oil, 10W30CD diesel enginelubricant oil,glycerol and triethanolamine were studied using the MPV-1500 frictiontester,The results show that the properties of friction,wear and limit PV of JS material aregreatly improved with the lubrication of the lubricant mediums above,The frictioncoefficient is decreased by 2 to 3 orders of magnitude,the wear is decreased by 1 to 2 ordersof magnitude,and the limit PV value is increased at least by 1 order of magnitude. The limitPV value of JS material is above 120 MPa·m/s with the lubrication of the 5 kinds oflubricant mediums,it is about 100 times as much as that of pure PTFE bearing(dryfriction ),and several times of that of babbit metal bearing with the lubrication of 20￣#mechanical lubricant oil.JS material can be applied in practice as akind of sliding bearingwhich has a high PV value under the lubrication of the lubricant mediums above.