摘要
通过扫描电子显微镜分析、贴滤纸法测试和塔菲尔曲线测量考察了甲基磺酸(MSA)体系镀锡液中Fe^2+质量浓度对镀锡层耐蚀性的影响。结果表明:当镀液中Fe^2+质量浓度大于5 g/L时,镀层中就会出现针孔,当镀液中Fe^2+质量浓度大于10 g/L时会严重影响镀层的耐蚀性。在实际生产中应将镀液的Fe^2+质量浓度控制在10 g/L以下。
The effect of mass concentration of Fe^2+ on corrosion resistance of tin coating electroplated from a methanesulfonic acid(MSA) bath was studied by scanning electron microscopy,ferroxyl test,and Tafel curve measurement.The results showed that pinholes appeared in coating when the mass concentration of Fe^2+ in bath was higher than 5 g/L,and the corrosion resistance of tin coating was seriously affected when the mass concentration of Fe^2+ was higher than 10 g/L.The mass concentration of Fe^2+ in the MSA tin electroplating bath should be controlled lower than 10 g/L.
作者
万一群
沈鹏杰
吉学军
胡建军
王传荟
WAN Yi-qun;SHEN Peng-jie;JI Xue-jun;HU Jian-jun;WANG Chuan-hui(Shougang Jingtang Iron and Steel United Co.,Ltd.,Tangshan 063299,China)
出处
《电镀与涂饰》
CAS
CSCD
北大核心
2019年第23期1266-1268,共3页
Electroplating & Finishing
关键词
镀锡板
甲基磺酸
亚铁离子
耐蚀性
tinplate
methanesulfonic acid
ferrous iron
corrosion resistance
