Cu含量对Al_2O_3·SiO_(2sf)/Al-Cu复合材料耐磨性能的影响  

EFFECTS OF Cu CONTENT ON THE WEAR PROPERTIES OF Al_2O_3·SiO_(2sf)/Al-Cu COMPOSITES

作　　者：许虹宇[1,2] 黄陆军[3] 耿林[3] 张杰[3] 黄玉东[2] 

机构地区：[1]哈尔滨辰能工大环保科技股份有限公司,哈尔滨150078 [2]哈尔滨工业大学化工学院,哈尔滨150001 [3]哈尔滨工业大学材料科学与工程学院,哈尔滨150001

出　　处：《金属学报》2013年第9期1131-1136,共6页Acta Metallurgica Sinica

基　　金：国家重点基础研究发展计划项目2012CB619600;黑龙江省自然科学基金E200929;黑龙江省博士后基金LRB08-189资助~~

摘　　要：通过挤压铸造的方法制备出了不同Cu含量的系列Al2O3·SiO2sf/Al-Cu复合材料.摩擦磨损实验结果表明,Cu的加入降低了复合材料的摩擦系数;且随着Cu含量的增加,Al2O3·SiO2sf/Al-Cu复合材料的耐磨性能先增加后降低.在磨损过程中,Al2O3·SiO2纤维增强相牢固地镶嵌在基体里并形成支架,起到保护基体而提高复合材料耐磨性能的作用.Al2O3·SiO2sf/Al复合材料的磨损机制主要为黏着磨损,Al2O3·SiO2afAl-Cu复合材料的磨损机制为黏着磨损为主并伴有磨粒磨损.Al2O3.SiO2sf/Al-Cu composites with different Cu contents were successfully fabri- cated by squeeze casting. The wear test results show that friction coefficient of the composites decreases with increasing Cu contents. Moreover, the wear resisting property of the prepared composites firstly increases and then decreases with increasing Cu contents. In wear testing process, Al2O3.SiO2 fibers are firmly fixed in the matrix and formed the framework which can protect Al matrix from grinding. Therefore, the wear resistance of the composites is increased by addition of Al2O3.SiO2 fiber reinforcement. The main wear mechanism of Al2O3-SiO2sf/pure Al composite is adherence abrasion, while that of Al2O3.SiO2sf/Al Cu composite is adhesive wear accompanied by abrasive wear.

关 键 词：铝基复合材料 AL-CU合金 耐磨性能 摩擦系数 

分 类 号：TB331[一般工业技术—材料科学与工程]