【作者】 陈跃； 上官宝； 铁喜顺； 张永振； 孙乐民；

【Author】 CHEN Yue, SHANG Guan-bao, TIE Xi-shun, ZHANG Yong-zhen, SUN Le-min (Department of Materials, Luoyang Institute of Technology, Luoyang 471039, China)

【机构】 洛阳工学院材料科学与工程系；

【摘要】 采用自制的销-盘式摩擦磨损试验机和MM-1000型制动摩擦磨损试验机研究了两种SiC颗粒增强铝基复合材料及目前汽车刹车盘材料广泛采用的灰铸铁(HT250)与半金属摩擦材料配副的制动摩擦学特性。结果表明:无论是模拟汽车的连续制动工况还是短时反复制动工况,颗粒增强铝基复合材料的耐磨性能均优于灰铸铁,摩擦系数与灰铸铁相当,摩擦系数的稳定性优于灰铸铁,同时质量仅为灰铸铁的1／3。因此,颗粒增强铝基复合材料是具有广阔应用前景的灰铸铁制动盘类零件的替代材料。更多还原

【Abstract】 The dry sliding tribological characteristics of SiC particle-reinforced aluminum composites and gray cast iron (HT250) against semi-metallic frictional materials were investigated on self-made block-disk tester. The results indicate that the wear rates of SiC particle reinforced composites are much smaller than that of gray cast iron commonly used as brake disk, while their frictional coefficients are about the same. SiC particle-reinforced aluminum-matrix composite show les fluctuation in friction coefficients as well and hence would be one of the suitable materials for making vehicle-braking components.更多还原