HVOF喷涂制备MCrAlY涂层不同处理后的组织性能分析  

Analysis on Microstructure and Properties of MCrAlY Coating by HVOF Sprayed After Different Treatment

作　　者：陈雄伟[1] 毕刚[1] 唐慧[1] 

机构地区：[1]宝钢设备检修有限公司表面研究所,上海201900

出　　处：《热加工工艺》2011年第2期134-136,160,共4页Hot Working Technology

摘　　要：采用WokaStar-600(Sulzer Metco公司生产)HVOF喷涂系统制备MCrAlY涂层,并对原涂层、封闭涂层及热震处理后涂层进行了组织形貌分析。结果表明:涂层中主要为fcc结构γ-Co(Ni)和bcc结构β-Co(Ni)Al相;封闭热处理后涂层组织更均匀,涂层内Al颗粒减少,β相减少,γ相增多,涂层氧化少,硬度增加;热震处理后涂层β-Co(Ni)Al相、Y2O3和Al颗粒增多,硬度降低。MCrAlY coating was sprayed by WokaStar-600 HVOF system.The microstructure and properties of the as-sprayed coating,sealed and heat-treated coating,and thermal-shock-treated coating were analyzed.The results show that all the coating is composed of fcc γ-Co（Ni） and bcc β-Co（Ni）Al structure.Al particle and β phase in the coating after sealed and heat treatment decline while γ phase increases.The hardness increases after sealed treatment while oxidation decreases,β structure Y2O3,and Al particle increases and hardness decreases in the coating after thermal shock treatment.

关 键 词：HVOF MCRALY涂层 组织 

分 类 号：TG174.44[金属学及工艺—金属表面处理]