体育器械用SiC改性铝基复合材料组织与性能研究  

Microstructures and Properties of SiC-modified Aluminum Matrix Composites Used in Sport Apparatus

作　　者：江伟[1] 张敏[2] 

机构地区：[1]重庆电子工程职业学院,重庆401331 [2]四川理工学院材料与化工工程学院,四川自贡643000

出　　处：《铸造技术》2018年第1期163-165,169,共4页Foundry Technology

摘　　要：采用粉末挤压法制备了不同体积分数SiC颗粒改性的铝基复合材料SiC/2024,研究了SiC颗粒体积分数对复合材料显微形貌、硬度、磨损体积和摩擦系数的影响,并对磨损形貌进行了观察。结果表明,随着SiC/2024铝基复合材料中Si C颗粒体积分数的增加,复合材料的硬度呈现逐渐上升的趋势,平均摩擦系数都保持在0.7~0.8之间,磨损体积呈现逐渐减小的趋势,磨痕长轴宽度和短轴宽度都呈现为逐渐降低的趋势,而表面磨痕的深度也呈现逐渐降低的趋势。此外,SiC/2024铝基复合材料的磨损形貌为椭球面状。The aluminum matrix composites SIC/2024 with different volume fraction of SiC particles were prepared by powder extrusion method, and the effects of the volume fraction of SiC particles on the microstructures, hardness, wear volume and friction coefficient of the composites were investigated, and the wear morphologies were observed. The results show that with the increase of the volume fraction of SiC particles in SIC/2024 aluminum matrix composites, the hardness of the composites shows a gradual upward trend, the average friction coefficient of the composite drops in 0.7-0.8, the wear volume of the composites decreases gradually, the length of the long axis and the width of the short axis of the abrasive wear show a decreasing trend, and the depth of the surface wear marks also decreases gradually. Furthermore, the wear morphology of the aluminum matrix composite SIC/2024 presents an ellipsoidal shape.

关 键 词：SIC 2024合金 复合材料 形貌 耐磨性能 

分 类 号：TB331[一般工业技术—材料科学与工程]