作　　者： ; ; ; ; ;

机构地区： 河南科技大学材料科学与工程学院

出　　处： 《材料热处理学报》 2013年第5期1-5,共5页

摘　　要： 采用真空热压烧结-内氧化法,制备了30%Mo/Cu-Al2O3复合材料。在载电条件下,考察了30%Mo/Cu-Al2O3销试样和铬青铜QCr0.5盘试样摩擦副的滑动摩擦磨损性能,利用扫描电镜观察磨损形貌并探讨了其摩擦磨损机制。结果表明,Mo颗粒的加入,增加了复合材料的整体强度及耐磨性;电流对磨损率和摩擦系数具有显著影响,随着电流增加,30%Mo/Cu-Al2O3复合材料的磨损率增加,摩擦系数增大;其磨损机制主要为磨粒磨损、粘着磨损和电烧蚀磨损。 The 30% Mo/Cu-A12O3composite were prepared by hot-pressed vacuum sintering. Friction and wear behavior of the 30% Mo/Cu-A12O3composite pin against QCr0.5 bronze disc in the presence of electric currents of various intensities were examined on a pin-on-disc tester. The worn surface morphology of the composite sample was observed by scanning electron microscope, and the wear mechanism was investigated. The results show that the Mo particles enhance the strength and wear resistance of the composite. The friction and wear behavior of the bronze/pin pair are markedly dependent on the electric current. The wear rate and friction coefficient of 30% Mo/Cu-A12O3composite increases with increasing electric currents. The wear mechanism is mainly abrasive wear, adhesive wear and electric erosion wear.

关 键 词： 复合材料 磨损率 摩擦系数 磨损机制

领　　域： [一般工业技术]