Mg-8Zn-4Al合金的化学镀镍  

Electroless nickel plating of Mg-8Zn-4Al magnesium alloys

作　　者：任晨星[1] 曹文博[1] 关绍康[1] 王利国[1] 张献军 

机构地区：[1]郑州大学材料工程学院,河南郑州450002 [2]鹤壁天海汽车电器有限公司,河南鹤壁458000

出　　处：《郑州轻工业学院学报（自然科学版）》2003年第3期24-26,共3页Journal of Zhengzhou University of Light Industry:Natural Science

摘　　要：对Mg 8Zn 4Al合金上直接进行化学镀镍进行了研究,运用X射线粉末衍射仪、扫描电镜、金相显微镜和M532腐蚀电化学测量系统等分析了Mg 8Zn 4Al合金的组织特点和镀层的表面形貌及性能特征.结果表明:基体为α(Mg),白色相为φ(Al2Mg5Zn2)和τ(Mg32(Al,Zn)49)三元相,黑灰色相为共晶α(Mg).镀层厚度约为30μm,镀镍前后的Ecorr由-1 55V升高到-0 4V,表明镀层平整、致密,与基体结合牢固,可有效保护Mg 8Zn 4Al合金.Electroless nickel plating of Mg-8Zn-4Al magnesium alloys has been studied.The microsturcture,the surface of the coating and the capicity of Mg_8Zn_4Al magnesium alloys are analyzed by measurements of me_ tallograph,XRD,SEM and the system of M532 corrosion_electrochemistry.The results show that the basement is α(Mg),φ(Al_2Mg_5Zn_2) and τ(Mg_(32)(Al,Zn)_(49)) displays white,eutectic α (Mg) can be seen black and gray.The thickness of the coating is about 30 μm.The value of E_(corr)-t raises from -1.55 V to -0.4 V which reveals the coating is neat and fine,the combination of the coating with the basement is firm and the coating can protect magnesium alloys effectually.

关 键 词：Mg-8Zn-4Al合金 化学镀镍 组织结构 镀层 性能特征 

分 类 号：TQ153.12[化学工程—电化学工业]