【作者】 王永飞；

【导师】 殷正安； 梁成浩；

【作者基本信息】 大连理工大学 ， 电化学工程， 2002， 硕士

【摘要】 采用正交实验方法开发出一种DY-1酸洗缓蚀剂，其最佳配方如下： 乙醇 4g 硫氰酸钠 4g 水合肼 7g 表面活性剂 3g 苯胺 3g 促进剂 1g 最佳浓度为0.2％，在50℃以下的HCl溶液中对A3钢具有良好的缓蚀作用。 通过化学失重法、电化学实验方法及物理测试技术对DY-1的缓蚀率、极化电阻和交流阻抗等电化学性能以及缓蚀机理进行了研究。结果表明，缓蚀率高达98.4％、当浓度超过0.1％时，缓蚀率变化较小。温度高于60℃时，A3钢的腐蚀速率随温度的升高而迅速上升。Fe³⁺存在时，A3钢的腐蚀速率随其浓度的升高而呈线性增大。线性极化实验结果显示，加入缓蚀剂后的极化电阻比空白溶液增大3个数量级，这说明DY-1酸洗缓蚀剂具有优异的缓蚀作用，在化学清洗领域中有着广阔的应用前景。进而参照物理测试技术分析，验证DY-1是通过静电引力引起的物理吸附起作用。更多还原

【Abstract】 The orthogonal experiment method had been adopted to develop a restrainer DY-1.The optimum formulation is as follows:Ethanoi 4gSodium thiocyanate 4gHydrazine hydrate 7gSurface active agent 3gAniline 3gAccelerant IgThe optimum concentration is 0.2%. When temperature downward 50℃, DY-1 has excellent corrosion mitigation for carbon steel in hydrochloric acid solution.The corrosion mitigation rate of the inhibitor and electrochemical performance, polarization resistance and alternating current impedance, had been tested via chemical imponderability method and electrochemical experiment way. The corrosion mitigation mechanism had been investigated by physical measuring and testing techniques. The results told that corrosion mitigation rate of the inhibitor came up to 98.4%. Alteration of corrosion mitigation rate is slight when concentration of the inhibitor exceeds 0.1%. When temperature goes beyond 60癈, corrosion rate of A3 steel goes up rapidly along with arising of temperature. Corrosion rate of A3 steel rises up in company with adding of concentration of Fe " on which Fe3+ exists . Sequent of linear polarization experiments indicates that polarization resistance after adding inhibitor heightening 3 order of magnitude compares with it in blank solution. It illuminates that restrainer DY-1 has excellent corrosion mitigation function. This inhibitor has amplitude applied foreground in chemical cleaning field. Referred to physical measuring and testing techniques, the inhibitor takes effect by physical absorption arouse by electrostatic attraction.更多还原