(江蘇大學(xué) 機(jī)械工程學(xué)院, 鎮(zhèn)江 212013)
摘 要: 通過(guò)分析SiCp/Al基復(fù)合材料中第二相SiCp的含量、 分布和尺寸對(duì)其性能的影響， 深入地研究了微米、 亞微米SiCp/Al復(fù)合材料的摩擦磨損特性， 尤其是SiCp/Al復(fù)合材料磨損亞表層特性的影響。 研究結(jié)果表明： 復(fù)合材料的磨損是粘著磨損、 微切削和剝層的共同作用， SiCp對(duì)材料粘著磨損有一定的抑制作用， 且隨著SiCp粒度和含量的增大， SiCp/Al基復(fù)合材料的耐磨性也隨之增加； 由于SiCp承擔(dān)了部分載荷和表層存在著機(jī)械混合層， 因此復(fù)合材料具有比其基體金屬更高的耐磨性。
關(guān)鍵字: SiCp/Al復(fù)合材料； 摩擦表面； 亞表層； 機(jī)械混合層
（School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China）
Abstract: Through analyzing the effects of content, distribution and size of SiCp on the wear properties of SiCp/Al composites, the micrometer and sub-micrometer SiCp/Al composites, especially the characterization on wear sub-surface property of SiCp/Al composites were investigated. The results show that the wear mechanism of composite is cooperation of scoring, micro-cutting and shell, and SiCp restrains the cohesion of composites. With the size and content of SiCp increasing, the wear-resisting properties of SiCp/Al composites increase. The composites have higher wear- resisting properties than their matrix alloys because of the SiCp taking some load and the mechanical mixture layer existing in the surface regions.
Key words: SiCp/Al composite; wear surface; sub-surface; mechanical mixture layer
