钝化液添加剂对镀锡板表面漆膜附着力的影响  

Effects of different additives in passivation solution on paint adhesion of tinplate

作　　者：潘佰福 王悦鼎 宋乙峰 岳重祥 李建中 朱广永 PAN Baifu;WANG Yueding;SONG Yifeng;YUE Chongxiang;LI Jianzhong;ZHU Guangyong(School of Metallurgy,Northeastern University,Shenyang 110819,China;Jiangsu(Shagang)Iron and Steel Research Institute,Zhangjiagang 215625,China;Zhangjiagang Yangtze River Cold Rolled Plate Co.,Ltd.,Zhangjiagang 215625,China)

机构地区：[1]东北大学冶金学院,辽宁沈阳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：《电镀与涂饰》2023年第11期50-57,共8页Electroplating & Finishing

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

摘　　要：通过孔隙率测试、计时电位(CP)分析、X射线光电子能谱(XPS)分析和附着力测试,研究了H2SO4、H_(2)SiF_(6)、Na_(2)SiF_(6)和NH_(4)F作为铬酸钝化液(含100 g/L CrO_(3))的添加剂对镀锡板表面孔隙率、镀锡层氧化程度、钝化膜组成及漆膜附着力的影响,并与铬酸盐(25 g/L Na_(2)Cr_(2)O_(7))钝化进行对比。结果表明,铬酸钝化液对镀锡板的钝化效果优于铬酸盐钝化液。采用100 g/L CrO_(3)+1 g/L NH_(4)F溶液钝化时,镀锡板的孔隙率最小,镀锡层中SnO2的含量最低,钝化膜中Cr2O3的质量分数最高、Cr(OH)_(3)的质量分数最低,漆膜附着力最佳。The effects of additives(i.e.H_(2)SO_(4),H_(2)SiF_(6),Na_(2)SiF_(6),and NH_(4)F)in a 100 g/L CrO_(3) solution for passivation of tinplate on the porosity and oxidation of tin coating,composition of passivation film,and adhesion of paint were studied by porosity testing,chronopotentiometry(CP),X-ray photoelectron spectroscopy(XPS),and adhesion measurement.The properties of tinplate mentioned above were compared with the one passivated in a 25 g/L Na_(2)Cr_(2)O_(7) solution.The results showed that the properties of tinplate passivated in the solution comprising 100 g/L CrO_(3) and 1 g/L NH_(4)F were as follows:lowest porosity,least SnO_(2) content in tin coating,highest mass fraction of Cr_(2)O_(3) and lowest mass fraction of Cr(OH)_(3) in passivation film,and best adhesion of paint.

关 键 词：镀锡板 钝化 铬酸 铬酸盐 添加剂 孔隙率 组成 漆膜附着力 

分 类 号：TQ153.13[化学工程—电化学工业] TQ153.6