复配缓蚀剂对碳钢在NaCl介质中的缓蚀作用

Corrosion Inhibition of Carbon Steel in NaCl Solution by Composite Inhibitors

复配缓蚀剂由七水硫酸锌与2-羟基膦酰基乙酸按不同比例制得。采用失重法、极化曲线和电化学阻抗法研究了复配缓蚀剂在氯化钠介质中对20#碳钢的缓蚀性能。结果表明,当两者浓度配比为50∶3时,缓蚀效果最佳,且该缓蚀剂是一种抑制阳极腐蚀为主的缓蚀剂,在氯化钠介质中具有较好的缓蚀性能。

A composite corrosion inhibitor was prepared with zinc sulfate and HPAA. The corrosion capability of the corrosion inhibitor in Na Cl medium for carbon steel 20# was evaluated by weight loss method, polarization curve and electrochemical impedance spectroscopy. The result showed that the corrosion inhibitor was an anodic inhibitor and had good corrosion inhibition performance in Na Cl medium. The corrosion inhibition effect on carbon steel 20# was pretty good when the concentration ratio of corrosion inhibitor was 50：3 in Na Cl medium.