用盐酸酸化浸取法从米糠中提取植酸，并将其作为盐酸酸洗缓蚀剂的主要成分；采用失重挂片、线性极化和电化学阻抗等方法评价该缓蚀剂的缓蚀效率，并初步探讨其缓蚀机理。结果表明：该缓蚀剂对碳钢在1 mol/L HCl 溶液中有良好的缓蚀效果，且缓蚀效率受温度影响较小，属于阴极型缓蚀剂。
Phytic acid was abstracted from the rice bran by hydrochloric acid leaching method and used as main component of corrosion inhibitor for hydrochloric acid pickling. Its inhibiting behavior on carbon steel in hydrochloric acid was investigated by means of mass loss, polarization curves and electrochemical impedance spectroscopy (EIS) methods. The results show that the corrosion inhibitor exhibits good inhibition effect for carbon steel in 1mol/L hydrochloric acid and inhibition efficiency is less affected by temperature. The results of polarization curves indicate that the corrosion inhibitor mainly prohibits the cathodic process.
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