弯头内表面超音速喷涂防腐耐磨涂层的应用  

Application of supersonic spraying anticorrosive and wear resistant coating on inner surface of elbow

作　　者：雷国财 LEI Guocai(Zhanjiang Branch of Baowu Equipment Intelligent Technology Co.,Ltd.,Zhanjiang 524000,Guangdong,China)

机构地区：[1]宝武装备智能科技有限公司湛江分公司,广东湛江524000

出　　处：《金属功能材料》2021年第6期71-74,共4页Metallic Functional Materials

摘　　要：采用超音速火焰(HVAF)内孔喷枪在304不锈钢基体上制备了WC-10Co4Cr金属陶瓷涂层,结果表明:WC-10Co4Cr涂层表面粗糙度为R_(a) 1.3μm,在不同攻角下,WC-10Co4Cr涂层的耐冲蚀性能均优于304不锈钢,在3.5%(质量分数)NaCl溶液中涂层具有较低的腐蚀电流密度,能有效减弱了矿浆冲蚀过程中的机械冲刷作用和电化学腐蚀作用。The WC-10 Co4 Cr cermet coating was prepared on the 304 stainless steel substrate with a supersonic flame(HVAF)inner hole spray gun.The results showed that the surface roughness of the WC-10 Co4 Cr coating was R_(a) 1.3μm.Under different angles of attack,the erosion resistance of WC-10 Co4 Cr coating was better than that of 304 stainless steel,and the coating had a lower corrosion current density in 3.5 wt%NaCl solution,which could effectively weaken the mechanical erosion and electrochemical corrosion in the slurry erosion process.

关 键 词：HVAF 内孔喷枪 WC-10Co4Cr 粗糙度 耐冲蚀 耐腐蚀 

分 类 号：TG174.4[金属学及工艺—金属表面处理] TD40[金属学及工艺—金属学]