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
陈雄伟, 毕 刚, 唐 慧
点击：3256次 下载：0次
作者单位：(宝钢设备检修有限公司 表面研究所, 上海 201900)
中文关键字：HVOF； MCrAlY涂层； 组织
英文关键字：HVOF; MCrAlY coating; microstructure
中文摘要：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。
英文摘要：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.