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研究了一种高耐蚀性常温磷化工艺,优选了磷化液配方,讨论了磷化液各组分对磷化膜的影响。通过硫酸铜点滴实验、氯化钠浸泡实验及塔菲尔曲线对磷化膜进行了耐蚀性检测。结果表明:磷化膜耐蚀性高,色彩均匀,呈蓝色。
A high corrosion resistance at room temperature phosphating process was studied. The formula of phosphating solution was optimized and the influence of components of phosphating solution on phosphating film was discussed. The corrosion resistance of the phosphate coating was tested by the drip test of copper sulfate, the sodium chloride immersion test and the Tafel curve. The results show that the phosphating film has high corrosion resistance, uniform color and blue color.