(哈爾濱工業(yè)大學(xué)材料科學(xué)與工程學(xué)院，哈爾濱150001)
摘 要: 以2024鋁合金為基體，使之與硅線石顆粒攪融混合成均勻漿料，經(jīng)半固態(tài)擠壓成形，獲得一種新型的復(fù)合材料制件。對它進(jìn)行摩擦磨損性能測定后發(fā)現(xiàn)，雖然增強(qiáng)體硅線石顆粒是直接從礦石開采獲得的，但由于采用攪融混合-半固態(tài)擠壓新技術(shù) ，其耐磨性明顯高于ZQSn6-6-3銅合金。為此，對其摩擦學(xué)特性進(jìn)行了研究，以便為硅線石顆粒作為一種廉價的增強(qiáng)劑應(yīng)用提供依據(jù)。
關(guān)鍵字: 硅線石顆粒 鋁合金 攪拌 半固態(tài)擠壓 摩擦學(xué)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
