光亮剂对酸性中磷化学镀镍层性能的影响  

Effect of brightening agent on properties of medium-phosphorus nickel coating deposited by acidic electroless plating

作　　者：杨倩韵 郑文芝[1] 张晓明 鹿轩 林继月 陈姚[1] 于欣伟[1] 

机构地区：[1]广州大学化学化工学院,广东广州510006 [2]广州市二轻工业科学技术研究所,广东广州510170

出　　处：《电镀与涂饰》2016年第1期14-18,共5页Electroplating & Finishing

基　　金：广州市高校科研项目(1201420606);广东省科技计划项目(2013B010405015);广州市科技计划项目(201509030005)

摘　　要：采用极化曲线、扫描电子显微镜(SEM)、中性盐雾(NSS)试验等方法,研究了酸性中磷化学镀镍液中N,N-二乙基丙炔胺甲酸盐(DEP)、硫酸铜、复配光亮剂RS和糖精钠4种光亮剂对镀层性能的影响。结果表明,以硫酸铜作为光亮剂所获得的镀层光亮度最高,镀层表面粗糙度(R_a)平均值达0.78μm且呈镜面状态,但镀层耐蚀性最差;用糖精钠作光亮剂时镀速最快,达21.56μm/h;而加入中间体RS的镀层耐蚀性最好,且光亮度较好。The effects of four kinds of brightening agents, i.e. 3-N,N-diethylamino-1-propyne formate （DEP）, copper sulfate, composite brightener RS, and sodium saccharin on properties of the medium-phosphorus Ni-P alloy coating deposited from an acidic electroless nickel plating bath were studied by polarization curve measurement, scanning electron microscopy （SEM）, neutral salt spray （NSS） test, and other methods. The results showed that the coating obtained with copper sulfate as brightening agent has the highest brightness and a mirror-like surface with an average roughness （Ra） of 0.78 μm, but the worst corrosion resistance. The fastest deposition rate was obtained as 21.56 μm/h when using sodium saccharin as a brightening agent. The coating deposited by adding the RS intermediate to plating bath shows the best corrosion resistance and a relative good brightness.

关 键 词：化学镀镍 光亮剂 粗糙度 耐蚀性 沉积速率 极化曲线 中性盐雾试验 

分 类 号：TQ153.2[化学工程—电化学工业]