甲基磺酸盐电镀液中Fe^(2+)质量浓度对镀锡板的影响  

Effect of Fe^(2+) content in methylsulfonate electroplating solution on the quality of tin plate

作　　者：贾宁 王悦鼎 宋乙峰 岳重祥 朱广永 李建中 Jia Ning;Wang Yueding;Song Yifeng;Yue Chongxiang;Zhu Guangyong;Li Jianzhong(School of Metallurgy,Northeastern University,Shenyang 110189,China;Institute of Research of Iron&Steel,Shagang,Jiangsu Province,Zhangjiagang 215625,China;Zhangjiagang Yangzijiang Cold Rolled Sheet Co.,Ltd.,Zhangjiagang 215625,China)

机构地区：[1]东北大学冶金学院,沈阳110819 [2]江苏省(沙钢)钢铁研究院,江苏张家港215625 [3]张家港扬子江冷轧板有限公司,江苏张家港215625

出　　处：《材料与冶金学报》2024年第5期491-496,504,共7页Journal of Materials and Metallurgy

基　　金：国家重点研发计划项目(2019YFE0123900);国家自然科学基金资助项目(51974069)。

摘　　要：采用扫描电镜(SEM)、X射线衍射(XRD)、塔费尔曲线及循环伏安曲线等测试方法,研究了在甲基磺酸盐体系镀锡工艺中,Fe^(2+)质量浓度对镀锡板的耐蚀性、电镀过程中Sn^(2+)扩散系数及电流效率的影响.结果表明:Fe^(2+)质量浓度增加会导致镀锡板表面孔隙数量增多,抑制镀层中的锡粒向(200)晶面生长,致使镀锡板耐蚀性下降,当Fe^(2+)质量浓度超过8.0 g/L时,镀锡板耐蚀性明显降低;同时,Fe^(2+)质量浓度增加会导致电镀锡过程中Sn^(2+)扩散系数减小、电流效率降低.The effect of Fe^(2+)mass concentration on the corrosion resistance of tinplate,the Sn^(2+)diffusion coefficient and current efficiency in the tinning process of methanesulfonate system was studied by scanning electron microscopy(SEM),X-ray diffraction(XRD),Tafel plot and cyclic voltammetry curve.The results show that the increase of Fe^(2+)mass concentration leads to the increase of the pores number on the surface of the tinplate,and inhibits the growth trend of tin particles in the coating toward(200)crystal face,thus leading to the decline of corrosion resistance of the tin plate.When the mass concentration of Fe^(2+)exceeds 8.0 g/L,the corrosion resistance of the tin plate decreases obviously.Meanwhile,the diffusion coefficient of Sn^(2+)and current efficiency decrease with the increase of Fe^(2+)mass concentration.

关 键 词：镀锡板 甲基磺酸 Fe^(2+) 耐蚀性 Sn^(2+)扩散系数 

分 类 号：TG178[金属学及工艺—金属表面处理]