超音速电弧喷涂制备NiTi混合涂层的空蚀性能研究  

Research on Cavitation Erosion Properties of NiTi Mixed Coating Deposited by Supersonic Arc Spraying

作　　者：周勇[1] 马晓琳[1] 李太江[2] 李巍[2] 

机构地区：[1]西安石油大学材料科学与工程学院,陕西西安710065 [2]西安热工研究院,陕西西安710032

出　　处：《热加工工艺》2016年第6期206-209,共4页Hot Working Technology

基　　金：陕西省重点学科专项资金资助项目(ys37020203);西安石油大学博士基金项目(134010189)

摘　　要：利用超音速电弧喷涂技术在0Cr13Ni5Mo不锈钢表面分别制备了NiTi涂层和NiTi/NiAl混合涂层。采用扫描电镜分析了涂层的组织形貌,用X射线衍射分析了涂层的相结构,并对两种涂层空蚀性进行了对比。结果表明:NiTi/NiAl混合涂层较NiTi涂层组织更加均匀,抗空蚀性能优于NiTi涂层。NiTi coating and NiTi/NiAl mixed coating were prepared on 0Crl3Ni5Mo stainless steel substance by supersonic arc spraying. The microstructure morphologies of the coatings was analyzed by SEM. The phase structures of the coatings were employed by XRD, and the cavitation erosion of two kinds of coatings was compared. The results show that NiTi/NiAl mixed coating has more uniform microstructure and much better cavitation erosion resistance than that of NiTi coating.

关 键 词：空蚀 NiTi涂层 NiTi/NiAl混合涂层 超音速电弧喷涂 

分 类 号：TG174[金属学及工艺—金属表面处理]