化学包覆Cu基纳米Al_2O_3复合材料的摩擦磨损行为研究  

FRICTION AND WEAR BEHAVIOR OF CHEMICAL-COATED Cu/Al_2O_3 NANOMETER COMPOUND MATERIAL

作　　者：王疆[1] 郦剑[2] 王幼文[3] 

机构地区：[1]辽宁科技大学应用技术学院,辽宁鞍山114044 [2]浙江大学金属材料研究所,浙江杭州310027 [3]浙江大学分析测试中心,浙江杭州310027

出　　处：《上海金属》2014年第1期27-30,54,共5页Shanghai Metals

基　　金：国家高技术研究发展计划(863计划)项目(2002AA332100);浙江省基金预研资助项目(20041207)

摘　　要：选用纳米级Al2O3陶瓷颗粒作为增强相,采用超声波增强化学镀的方法完成对纳米Al2O3陶瓷颗粒金属铜的包覆,热压烧结成块材,并在特定的磨损条件下,对两种纳米Al2O3含量(10wt%Al2O3和30wt%Al2O3)的铜基复合材料进行摩擦磨损实验,探索纳米颗粒在陶瓷增强铜基复合材料中的增强和磨损机制。结果表明:复合材料在磨损过程中的磨损失重并不是单调增加的,而是存在两个阶段。Al2O3增强相颗粒的含量及分散性对复合材料的硬度及耐磨性有重要影响。Using nano-sized Al2O3 ceramic particles as enhancement phase,the copper coating particles coated with nano Al2O3 were prepared by ultrasonic electroless deposition,and then were sintered into ceramic particles reinforced copper-matrix composites by hot pressing.Under the condition of specific wear and tear,the friction and wear test was studied by using copper-matrix composites with two kinds of nano Al2O3 content coating 10wt％ and 30wt％ of Al2O3 respectively.Enhancement and the wear mechanism of nanoparticles in ceramic reinforced copper-matrix composites was explored.The results showed that in the process of wear and tear,the wear weightless of composite materials exhibited two phases rather than monotone increasing.The content and dispersion of Al2O3 ceramic particles influenced the hardness and wear resistance of composite materials greatly.

关 键 词：纳米AL2O3 摩擦磨损 复合材料 化学包覆 

分 类 号：TB332[一般工业技术—材料科学与工程]