双氧水钝化工艺的研究与改进

Research and improvement of hydrogen peroxide passivation technology

采用单因子变量法对双氧水钝化工艺进行了改进,利用硫酸铜点滴试验对双氧水钝化成膜质量进行检测。研究结果表明,试验优选出的最优配方和工艺为:双氧水质量分数为0.5%、螯合剂X质量分数为0.15%、钝化液pH值为9.6、钝化温度为40℃、钝化时间为6 h。该钝化工艺可大大提高碳钢整体耐腐蚀性能。

By using the single factor variable method,the hydrogen peroxide passivation technology had been improved,in which the cupric sulfate spot test is used to detect the quality of the membrane caused by hydrogen peroxide passivation technology.The research result shows that the optimized recipe and craft are as below: the mass fraction of the hydrogen peroxide is 0.5%,the mass fraction of chelating agent X is 0.15%,the pH value of the passivation liquid is 9.6,the passivation temperature is 40℃,and the passivation time is 6 hours.The passivation craft can increase the whole corrosion resistance of the carbon steel greatly.