石墨的铜包覆量对自润滑材料的性能影响

Effect of Coating Content of Copper-coated Graphite on Property of Self-lubricating Materials

采用粉末冶金方法,选取铜质量分数分别为30%和60%的铜包石墨与铜粉制备铜基石墨自润滑材料,并对不同包覆量的石墨制备的固体自润滑材料的性能进行分析。结果表明,铜包覆量为30%的石墨制成的固体自润滑材料在20N载荷下的最小摩擦因数为0.13,对应的抗压强度为192 MPa,力学性能和摩擦磨损性能好;选用包覆含量为30%的铜包石墨可以与铜粉制成减摩润滑效果好且力学性能优的固体自润滑材料。

Copper matrix-graphite self-lubricating materials were prepared by powder metallurgy applying copper-coated graphite powders with copper mass fraction of 30% and 60% respectively and copper powders as raw materials.The properties of solid self-lubricating materials with different coating content of copper-coated graphite were investigated.The results show that the minimum friction coefficient of solid self-lubricating composite materials at 20 Nloading made by 30%coating content copper-coated graphite is0.13,and compressive strength is 192 MPa.The composites with better self-lubricating properties and mechanical properties can be maintained by coating content of 30% copper-coated graphite.