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采用粉末冶金法制备Si颗粒增强铝基复合材料,在不同的载荷条件下进行干摩擦试验,研究增强相Si含量对材料摩擦性能的影响。结果表明,增强相Si的加入有效提高了复合材料的摩擦性能;随着Si含量的增加,摩擦因数和磨损量均先减小后增大,当Si含量达到12%时,其摩擦性能最好。通过SEM和EDX分析铝基复合材料磨损表面,其磨损机制主要为磨粒磨损和氧化磨损。
The Si particle reinforced Al matrix composites were prepared by powder metallurgy method. The dry friction tests were carried out under different loading conditions to study the influence of increasing Si content on the tribological properties of the materials. The results show that the addition of reinforcing phase Si effectively improves the tribological properties of the composites. With the increase of Si content, the friction coefficient and the wear volume first decrease and then increase. When the Si content reaches 12%, the tribological properties are best . SEM and EDX analysis of aluminum-based composite wear surface, the wear mechanism is mainly abrasive wear and oxidation wear.