通过镀液成分和工艺试验，筛选出Ｚｎ－Ｍｎ－Ｃｕ和Ｚｎ－Ｔｉ－Ｎｉ两种成分镀液，在一定的浸镀温度和冷却方式下，可以获得表面光滑、色泽均匀的彩虹、金黄、紫、蓝等彩色镀层。盐雾腐蚀试验表明：彩色热镀锌层比常规热镀锌层的耐蚀性能约提高一倍。彩色热镀锌层表面氧化膜对镀层具有保护作用，且提高了漆层粘附性，氧化膜较厚的镀层其涂漆性和抗蚀性更优。
The process of colored hot dip galvanizing and the corrosion resistance of the galvanized coatings were studied. Two types of melted zinc alloy bath (Zn-Mn-Cu) were developed for producing smooth, uniform and gaily-colored coatings.The golden, purple, blue and iridescent coatings were obtained at proper bath temperature and under suitable cooling conditions.Higher bath temperature and longer cooling time in air before quenching in water would thicken the oxide film on coatings, which resulted in changing the color of the Zn-Ti-Ni coating from golden to purple and blue, but with little effect on the iridescent color of the Zn-Mn-Cu coating. The salt spray tests showed that the colored galvanized coatings had excellent corrosion resistance, and their corrosion weight loss was only half of that for the conventional galvanized coatings. In addition, the colored coatings provided better adhesion to paint.
参考文献
| [1] | |
| [2] | YamanlotoTEPPat．,0269005A2,1987-11-192YamamotoTEPPat．,0269006A2、1987-11-193YamamotoTUSPat．,5022937,1991-06-114邓仁江．热浸镀锌杂志(台),1990 |
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