工艺参数对Ni包WC爆炸喷涂涂层组织与耐磨性能的影响  

Effect of Processes Parameter on the Microstructure and Wear Resistance of WC-Ni Ceramic Coating Prepared by Detonation Gun Spraying

作　　者：揭晓华[1] 潘振鹏[1] 卢国辉[1] 谢光荣[1] 曾鹏[1] 黄拿灿[1] 

机构地区：[1]广东工业大学材料与能源学院,广州510631

出　　处：《材料工程》2003年第11期7-10,共4页Journal of Materials Engineering

基　　金：广东工业大学重点学科经费资助 ;项目编号 2 0 2 0 0 4

摘　　要：采用不同的爆炸喷涂工艺参数制备了 Ni包 WC涂层 ,用扫描电镜观察了不同工艺参数下的涂层组织与磨损面形貌 ,分析了工艺参数对涂层组织形貌及耐磨性的影响 ,结果表明 ,当比值 O2 /C2 H2 =2时 ,可获得致密的涂层 ,涂层的耐磨性能较高 ,其它条件下的涂层由于组织较疏松 。The WC-Ni ceramic coatings were prepared by detonation gun spraying with different parameters, the microstructure and worn surface of the coatings was examined by means of SEM in order to investigate the effect of parameters on the wear machanism of the coatings, it was found that a compact texture coating with high wear resistance can be obtained when the value of O_2/C_2H_2 mol ratio is about 2.1 In other conditions the wear resistance of the coating decrease obviously due to the spalling of WC partical from the coating.

关 键 词：爆炸喷涂 工艺参数 组织形貌 耐磨性 

分 类 号：TG174[金属学及工艺—金属表面处理]