(哈尔滨工业大学材料科学与工程学院，哈尔滨150001)
摘 要: 以2024铝合金为基体，使之与硅线石颗粒搅融混合成均匀浆料，经半固态挤压成形，获得一种新型的复合材料制件。对它进行摩擦磨损性能测定后发现，虽然增强体硅线石颗粒是直接从矿石开采获得的，但由于采用搅融混合-半固态挤压新技术 ，其耐磨性明显高于ZQSn6-6-3铜合金。为此，对其摩擦学特性进行了研究，以便为硅线石颗粒作为一种廉价的增强剂应用提供依据。
关键字: 硅线石颗粒 铝合金 搅拌 半固态挤压 摩擦学特性
（School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001）
Abstract:2024 aluminium alloy was used as matrix,and mixed with sillimanite particulates by stirring to form semi-solid slurry,then the slurry underwent extrusion. By this way, sound composite workpieces were obtained, and the tribological properties were measured. Although sillimanite paricaulate was gained from natural minerals,the friction and wear properties of the composites were better than those of ZQSn6-6-3,because of the use of stirring mixture-semisolid extrusion. Therefore, the experimental observation and the theoretical analysis of the wear and friction mechanism were undertaken.
Key words: sillimaniteparticulate aluminum alloy stirring semi-solid extrusion composite tribological properties
