6061-T6铝合金电弧喷涂Ni-Al涂层结合强度性能研究  

Study on bonding strength properties of arc sprayed Ni-Al coating for 6061-T6 aluminum alloy

作　　者：王吉孝 王黎 马李 莫才颂 WANG Jixiao;WANG Li;MA Li;MO Caisong(School of Mechanical and Electrical Engineering,Guangdong University of Petrochemical Technology,Maoming 525000,China)

机构地区：[1]广东石油化工学院机电工程学院,广东茂名525000

出　　处：《电焊机》2020年第10期14-17,I0003,共5页Electric Welding Machine

基　　金：广东石油化工学院引进人才项目(2019rc071)。

摘　　要：为提高舰载机偏流板表面涂层的结合强度并延长其使用寿命,利用双丝电弧喷涂技术在6061-T6铝合金表面制备四种Ni-Al复合涂层,研究了四种不同复合涂层与基体的结合强度性能。同时观察涂层断口形貌和截面形貌,并分析其失效原因。试验结果表明,以Ni-5wt.%Al为打底层,以Ni-20wt.%Al作为面层的Ni-Al复合涂层结合强度较高,该复合涂层结合强度满足性能指标要求。In order to improve the bonding strength of the surface coating of the deflector and prolong its service life,four kinds of Ni-Al composite coatings were prepared on 6061-T6 aluminum alloy by twin-wire arc spraying technology.The bonding strength properties of four different composite coatings were studied.At the same time,the appearances of fracture and section of the coating were observed,and the failure reasons were analyzed.The results show that the bonding strength of Ni-Al composite coating with Ni-5wt.%Al as bottom layer and Ni-20wt.%Al as surface layer is higher,and the bonding strength of the composite coating meets the performance index requirements.

关 键 词：6061-T6铝合金 电弧喷涂 复合涂层 结合强度 

分 类 号：TG174.4[金属学及工艺—金属表面处理]