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以水雾化铜粉为基体,加入SiC_p作为增强相,添加铁粉做强化组元,石墨为润滑剂,利用粉末冶金法通过热压烧结工艺制备了SiC_p/Cu复合材料。在MRH-3型高速环块磨损试验机上研究了复合材料在室温下的摩擦磨损性能。分析了SiC_p含量对复合材料力学性能及耐磨性能的影响。结果表明,SiC_p/Cu复合材料在力学性能、耐磨性能方面均表现良好;随着SiC_p含量增加,复合材料的相对密度逐渐下降,孔隙率逐渐增加,布氏硬度、抗弯强度以及耐磨性能均是先增大后减小;综合性能较好的是SiC_p含量为7.5%的试样;磨损机理为磨粒磨损和粘着磨损。
SiC_p / Cu composites were prepared by the powder metallurgy method by using powder atomized copper powder as matrix, adding SiC_p as reinforcing phase, adding iron powder as reinforcing component and graphite as lubricant. The friction and wear properties of the composites at room temperature were investigated on MRH-3 high-speed ring block wear tester. The effect of SiCp content on the mechanical properties and wear resistance of the composites was analyzed. The results show that the mechanical properties and wear resistance of SiCp / Cu composites are good. With the increase of SiCp content, the relative density of composites decreases gradually, the porosity increases, Brinell hardness, flexural strength and wear resistance All increase firstly and then decrease; the better overall performance is the sample with SiC_p content of 7.5%; the wear mechanism is abrasive wear and adhesive wear.