铜包石墨含量对铜锰铝复合材料摩擦磨损性能的影响

为改善铜锰铝合金的烧结性能,并提高其在干摩擦下的摩擦磨损性能,以铜包石墨作为自润滑相加入到铜锰铝合金中,采用等离子真空压力烧结方法制备铜锰铝/石墨复合材料,分析铜包石墨含量对复合材料的密度、硬度的影响,探讨不同复合材料在干摩擦和油润滑条件下的摩擦磨损性能.结果表明:相比真空和氢气还原气氛下的烧结方式,等离子体烧结铜锰铝...

Effect of Copper-coated Graphite Content on Friction and Wear Properties of Cu-Mn-Al Composites

In order to improve the sintering properties of Cu-Mn-Al alloy and its friction and wear properties under dry friction,copper coated graphite was added into Cu-Mn-Al alloy as self-lubricating phase,and Cu-Mn-Al/copper coated graphite composites were prepared by plasma sintering technology.The effects of copper coated graphite content on the density and hardness of composites were analyzed,and the friction and wear properties of different composites under dry friction and oil lubrication were discussed.The results show that compared with the sintering method in vacuum and hydrogen reduction atmosphere,plasma sintered Cu-Mn-Al/copper coated graphite composites have higher density and hardness,and its hardness decreases with the increase of copper coated graphite content.Under condition of dry friction and load lower than 20 N,the composites with copper coated graphite mass fraction from 6% to 8% have better antifriction and wear resistance,which can be used as self-lubricating material under dry friction conditions.Under condition of oil lubrication,the bearing capacity of the composites is greatly improved,but when the load is large,the antifriction wear resistance and bearing capacity of the composite are slightly lower than that of Cu-Mn-Al alloy.