摘要：在纯锌浴中添加钛，制得锌—钛合金镀层含硅钢板。通过塔菲尔极化及电化学阻抗测量，研究了其在w=5％的NaCI水溶液中的腐蚀电化学行为，并与热浸纯锌镀层钢板进行了对比。结果表明，锌—钛合金镀层钢板的极化电阻和交流阻抗增大，腐蚀电流密度减小，耐蚀性能得到提高。 关键词：含硅钢；锌—钛合金镀层；热浸镀；耐蚀性；电化学 中图分类号：TQl53．2 文献标志码：A 文章编号：1004—227X(2009)03—0021一03 Electrochemical behavior of hot-dip zinc-tanium alloy galvanized steel sheet／／GUI Yan，XU Qia0—yu* Abstract：A Zn—-Ti galvanizing coating was prepared on Si-containing low--carbon steel by hot--dip galvanizing in a Zn—Ti bath．The corrosion performance and electrochemical behavior of Zn and Zn-Ti alloy galvanized steel sheets in 5％一(mass fractionl NaCl solution were studied by Tafel polarization and electrochemical impedance spectroscopy fEIS)．The results showed that the hot．dip Zn-Ti galvanized steel sheet has higher polarization resistance and electr0． chemical impedance but lower corrosion current density as compared with the hot．dip Zn galvanized one。The corrosion resistance of Zn-Ti galvanized steel sheet was improved． Keywords：silicon．．containing low．．carbon steel；zinc—— titanium alloy coating；hot-dip galvanizing；corrosion resistance；electrochemistry First-author’s address：Panyu Polytechnic，Guangzhou 51 1483．China 1 前言 热浸锌作为钢铁材料表面防护工艺之一，在交通、建筑、通讯、电力等领域获得了广泛的应用[1-3]。在锌浴中添加合金元素形成的热浸锌合金镀层，具有较好的腐蚀保护作用，常用的有Ni、Mn、Al、Mg等。锌浴中添加各种合金元素以后，主要有以下几方面的作用：(1)利用合金化，使金属表面形成热力学稳定性高的连续保护层，耐蚀性提高；(2)< 注：本站部分资料需要安装PDF阅读器才能查看，如果你不能浏览文章全文，请检查你是否已安装PDF阅读器！ |
