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用熔铸法制备不同(TiB+TiC)含量的原位自生(TiC+TiB)/Ti6Al4V复合材料,通过HT-1000型摩擦磨损试验机研究(TiC+TiB)含量对复合材料干滑动摩擦磨损性能的影响,并用扫描电镜和激光共焦显微镜观察分析其磨损行为。结果表明:原位合成的复合材料较基体合金硬度增加,磨损率降低,具有优异的耐磨性能,摩擦系数小且起伏较小,摩擦性能稳定。复合材料磨面上TiO_2、SiO_2和Al_2O_3氧化产物增加,磨痕变浅,呈断续状磨痕数量增加,摩擦氧化物对磨损表面起到一定保护作用。
In-situ (TiC + TiB) / Ti6Al4V composites with different contents of (TiB + TiC) were prepared by the melt casting method. The effects of the content of (TiC + TiB) on the dry sliding friction and wear properties of the composites were investigated by using a HT-1000 friction and wear tester , And the wear behavior was analyzed by scanning electron microscopy and laser confocal microscopy. The results show that the in-situ composites have higher hardness, lower wear rate, better wear resistance, smaller friction coefficient, less fluctuation and stable friction. On the composite surface, the oxidation products of TiO 2, SiO 2 and Al 2 O 3 increased, the wear scar became lighter, the number of intermittent wear scar increased, and the friction oxide played a protective role on the worn surface.