助熔剂对甲基磺酸盐镀锡板性能的影响  

Effects of different fluxes on properties of tinplate electroplated from a methanesulfonate bath

作　　者：曹美霞[1] CAO Meixia(Technology Center of Meishan Iron&Steel Co.,Nanjing 210039,China)

机构地区：[1]上海梅山钢铁股份有限公司制造管理部,江苏南京210039

出　　处：《电镀与涂饰》2020年第8期474-478,共5页Electroplating & Finishing

摘　　要：研究了甲基磺酸盐体系镀锡生产中两种不同的助熔剂对镀锡板耐蚀性和涂装性能的影响。结果表明:对耐腐蚀性能而言,无机盐类助熔剂明显优于烷基磺酸类助熔剂。与采用烷基磺酸类助熔剂时相比,由于采用无机盐类助熔剂形成的钝化膜量略高,且其中热稳定性较好的组分Cr2O3较多,因此漆膜与其镀锡板的附着性能略好,但因钝化膜中Cr(OH)3偏低而抗硫性略差。镀锡板生产前需要综合考虑用户对产品的功能要求来选择适宜的助熔剂。The effects of two types of fluxes on the corrosion resistance and coatability of tinplates produced by tin electroplating in a methanesulfonate bath were studied.The results showed that the inorganic salt type flux was superior to the alkylsulfonic acid type flux in corrosion resistance.As compared with the alkylsulfonic acid type flux,the amount of passivation film formed by the inorganic salt type flux was a bit higher,and there were more Cr2O3 phases with good thermal stability,hence the adhesion of a coating on the tinplate obtained using the inorganic salt type flux was better,but its sulfur resistance was worse due to the low Cr(OH)3 content in the passivation film.Before tinplate production,it is necessary to select an appropriate flux based on the user’s functional requirements.

关 键 词：镀锡板 甲基磺酸盐镀锡 助熔剂 耐蚀性 钝化膜 涂装性能 

分 类 号：TQ153.13[化学工程—电化学工业] TG178[金属学及工艺—金属表面处理]