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一、前言镀锌钢替代裸露的或未镀锌的涂漆钢应用在承受侵蚀条件下已取得成效。锌作为阳极与钢形成电偶是防止钢腐蚀的一种有效方法。正因为如此,镀锌钢的应用明显增加,尤其是在汽车制造工业中,应用更加广泛。尽管镀锌对于防止钢的腐蚀是有效的,但是仍然存在有待改进的方面。例如,由于锌和钢的电极电位相差很大(在空气饱和的氯化钠溶液中,锌和钢的电极电位分别为-1.05和-0.69V_(SCE)),因此在保护钢不受
I. INTRODUCTION The application of galvanized steel instead of bare or non-galvanized painted steel has achieved results under eroding conditions. Zinc as the anode and the formation of galvanic couple is to prevent corrosion of steel is an effective method. Because of this, the application of galvanized steel has obviously increased, especially in the automobile manufacturing industry, the application is more extensive. Although galvanizing is effective in preventing corrosion of steel, there are still areas for improvement. For example, zinc and steel have very different electrode potentials (zinc and steel electrode potentials of -1.05 and -0.69 V SCE in air-saturated sodium chloride solution, respectively)