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采用机械搅拌与高能超声处理法制备了纳米SiC颗粒(n-SiCp)增强的镁基复合材料,探讨了基体及其复合材料的干滑动摩擦磨损行为。结果表明:由于纳米颗粒的强化作用,复合材料的耐磨性能要明显的强于基体,随着载荷的增加,基体和复合材料的磨损率线性增加,在磨损过程中,基体和复合材料经过磨合磨损和稳态磨损两个阶段。通过对磨损表面的显微分析发现,磨损机制主要是粘着磨损、磨粒磨损和剥层磨损,载荷大小对磨损机制有重要影响。
The nano-SiC particles (n-SiCp) reinforced magnesium matrix composites were prepared by mechanical stirring and high-energy ultrasonic treatment, and the dry sliding friction and wear behavior of the matrix and its composites were discussed. The results show that the wear resistance of the composites is obviously stronger than that of the matrix due to the strengthening effect of the nanoparticles. The wear rate of the matrix and the composites increases linearly with the increase of the load. During the wear process, Wear and steady-state wear two stages. Through the microscopic analysis of the worn surface, it is found that the wear mechanism is mainly adhesive wear, abrasive wear and peeling wear, and the load size has an important influence on the wear mechanism.