LY12合金表面微弧放电沉积陶瓷膜的抗磨损性  

WEAR RESISTANCE OF CERAMIC OXIDATION COATINGS DEPOSITED BY MICROARC DISCHARGE ON LY12 ALLOY

作　　者：薛文斌[1] 杜建成[1] 吴晓玲[1] 邓志威[1] 来永春[1] 张通和[1] 

机构地区：[1]北京师范大学低能核物理研究所,北京100875

出　　处：《北京师范大学学报（自然科学版）》2005年第4期380-382,共3页Journal of Beijing Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(59801003);北京市科技新星计划资助项目(9558102500);国家"八六三"高科技计划资助项目(715-011-020);北京市优秀人才专项资金资助项目

摘　　要：利用等离子体微弧放电沉积方法在LY12铝合金表面获得230μm厚的陶瓷膜,并测量不同膜深度及磨损时间下摩擦学特性.结果表明,LY12合金经微弧氧化表面处理后抗磨损性能提高了3个数量级.该陶瓷膜与碳化钨球干摩擦条件下,磨损率最小可达3·29×10-7mm3·N-1·m-1.摩擦过程中,部分碳化钨转移到氧化膜上,呈现粘着磨损特征,降低了磨损率.The ceramic coatings of 230 tLm thick are prepared by microarc discharge on LY12 aluminum alloy, and their tribological behaviors under different conditions are tested. After the alloy is coated, its wear resistance is improved over three orders of magnitude. Under dry sliding against WC ball, the lowest wear rate is less than 3.29 × 10^-7mm^3·N^-1·m^-1. During friction test, one part of the WC ball counter is transferred to the surface of coatings, which takes advantage of decreasing the wear rate.

关 键 词：微弧放电 摩擦磨损 陶瓷膜 

分 类 号：TG174.45[金属学及工艺—金属表面处理]