铝合金化学镀Ni-Cu-P工艺优化及其性能研究  

Process optimization and performance research of the electroless Ni-Cu-P plating on aluminum alloy

作　　者：曾宪光[1,2] 张敬雨[1] 罗宏[1] 杨瑞嵩[1] 

机构地区：[1]四川理工学院材料与化学工程学院,四川自贡643000 [2]材料腐蚀与防护四川省重点实验室,四川自贡643000

出　　处：《轻合金加工技术》2015年第5期43-46,共4页Light Alloy Fabrication Technology

基　　金：材料腐蚀与防护四川省重点实验室开放基金项目(2014CL06);四川省教育厅资助项目(14ZB0219);四川省科技厅应用基础项目(2014JY0007)的资助

摘　　要：对铝合金表面采用化学镀方法镀Ni-Cu-P三元合金,通过正交试验方法,获得了最佳配方及工艺条件,对镀层的形貌、孔隙率、厚度、硬度和耐蚀性能进行了检测和评价。试验结果表明:在最佳配方及工艺条件下,镀层具有较快的沉积速率,镀速达95.4 g/(m2·h);镀层厚度可达35.1μm,厚度适中。极化曲线和静态腐蚀试验表明,该镀层具有良好的耐腐蚀性;镀层孔隙率较低,仅为0.16个/cm2;镀层表面平整、光亮、分布均匀,无起皮和脱落,与基体结合良好。Ni-Cu-P ternary alloy is prepared on the surface of aluminum alloy by electroless plating. The optimum formula and process condition are obtained by the orthogonal test. Corrosion resistance and thickness, the porosity, hardness and morphology of the coating are tested and evaluated. The experimental results show that under the optimum formula and technological conditions ,the deposition rate is up to 95.4g · m^-2 · h^-1 and thickness up to 35.1 μm. Polarization eurves and the static corrosion test indicate that the coating has perfect corrosion resistance ; the porosity is only 0.16/cm^2 ; the surface is smooth, bright, uniform, without peeling or loss and binding well with the substrate.

关 键 词：化学复合镀 Ni-Cu-P三元合金 工艺条件 耐蚀性 

分 类 号：TG178[金属学及工艺—金属表面处理]