铜基纳米Al_2O_3复合刷镀层组织形貌及耐磨性研究  

Research on structure and properties of copper-based nano Al_2 O_3 composite coating prepared with electro-brush plating

作　　者：袁庆龙[1] 梁宁宁[1] 李平[1] 

机构地区：[1]河南理工大学材料科学与工程学院,河南焦作454003

出　　处：《功能材料》2013年第20期2936-2939,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51275156)

摘　　要：在紫铜基体上分别制备了普通快速铜镀层和纳米Al2O3/快速铜复合刷镀层,采用扫描电镜、金相显微镜、显微硬度计、摩擦磨损实验机对比研究了两种镀层的表面形貌、截面组织形貌、显微硬度和耐磨性。结果表明,纳米Al2O3颗粒的加入显著改变镀层组织形貌与性能。与普通快速铜镀层相比,纳米铜基复合刷镀层表面平整,组织更加细化致密,显微硬度增大,摩擦系数降低,减弱了磨损面的犁削效应和粘着效应,耐磨性优于普通快速铜镀层。Traditional Cu coating and Cu/nano-Al2O3 composite coating were prepared respectively with electro- brush plating on pure copper matrix. The surface morphology, section structure, micro-hardness and wear re- sistance of both coatings were determined and comparatively analyzed with canning electron microscope, metal- lographic microscope, digital micro-hardness tester and friction-wear tester. The results showed that, the structure, morphology and properties of Cu/nano-Al2O3 composite coating are changed due to adding nano-Al2O3 particles to the Cu based coating. The surface morphology of Cu/nano-Al2O3 composite coating was more leveling and smooth, the microstructure was more compact, micro-hardness was higher and friction coefficient was lower than that of traditional Cu coating. Cu/nano-Al2O3 coating has strong resistance effects on plough and adhesion wear. The wear resistance of Cu/nano-Al2O3composite coating was superior to that of traditional Cu coating.

关 键 词：电刷镀 纳米AL2O3 铜基复合镀层 组织形貌 

分 类 号：TG178[金属学及工艺—金属表面处理] TQ153[金属学及工艺—金属学]