载流条件下的1Cr18Ni9Ti/浸金属碳摩擦磨损性能研究

在销-盘摩擦磨损试验机上试验了载荷、速度、电流对1Cr18Ni9Ti/浸金属碳对磨时的摩擦因数、磨损量及磨损形貌的影响。试验结果表明,载荷对1Cr18Ni9Ti/浸金属碳摩擦副的摩擦因数和销试样的磨损率有显著影响:载荷越大,摩擦因数越大,磨损率越低;摩擦因数、磨损率与速度的关系受载荷的制约。当低载时,以电流影响为主。销试样的磨损表面出现了粘着磨损,氧化磨损和电弧烧蚀。

Study on Friction and Wear Behaviour of 1Cr18Ni9Ti/Copper-impregnated Metallized Carbon with Electrical Current

Experimental study on the friction and wear behavior of 1Cr18Ni9Ti/copper-impregnated metallized carbon was carried out under the conditions of different loads,sliding speed and electrical current on a pin-on-disc tester.The result demonstrates that load has distinct influence on friction coefficient of 1Cr18Ni9 Ti/copper-impregnated metallized carbon and wear rate of copper-impregnated metallized carbon,with the increase of the load,the coefficient increases and the wear rate decreases;the load affects the relationship of sliding speed and friction coefficient,the relationship of sliding speed and wear rate.When the load is lower,the electrical current has an important effect on the friction coefficient and the wear rate.The worn surface morphology of copper-impregnated metallized carbon is found to be characterized by adhesive wear,oxidative wear and arc ablation.