高频脉冲电镀镍钴合金工艺及性能的研究  

Study on high frequency pulse electroforming processing and properties of Ni-Co plating

作　　者：宫晓静[1] 许韵华[1] 杨玉国[1] 赵宇[1] 曹克宁[1] 

机构地区：[1]北京交通大学理学院化学所,北京100044

出　　处：《功能材料》2007年第A07期2637-2640,共4页Journal of Functional Materials

摘　　要：采用高频脉冲电流，制备Ni-Co复合镀层。通过正交试验设计的方法，重点考察了脉冲频率、占空比、平均电流密度、镀液pH值、温度及CoSO4·7H2O的浓度对镀层在15％H2SO4溶液中的阳极极化行为的影响，从而遴选出最佳电镀工艺：脉冲频率140kHz，占空比0．25，平均电流密度3A／dm，镀液pH值3，温度45℃，硫酸钴浓度20g／L。同时，对高频脉冲电镀与直流电镀进行比较。By the method of high frequency pulse electroplating, Ni-Co composite coating was prepared. The effects of process conditions such as pulse frequency, ton/off, current density, pH value, temperature and quantity of CoSO4 on anodic polarization acting was studied through orthogonal experiments and the technology of extroplating was optimized： pulse frequency 140kHz, ton/off 0.25, current density 3A/dm, pH value3, temperature 45℃, CCoSO4 20g/L. Meantime the high frequency pulse plating was compared with the direct current process.

关 键 词：高频脉冲电镀 NI-CO合金 耐蚀性 

分 类 号：TQ153.2[化学工程—电化学工业] TG113.23[金属学及工艺—物理冶金]