Two phenylpyrimidine derivatives as new corrosion inhibitors for cold rolled steel in hydrochloric acid solution
Two phenylpyrimidine derivatives as new corrosion inhibitors for cold rolled steel in hydrochloric acid solution
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两种苯基嘧啶衍生物作为新型冷轧钢盐酸溶液缓蚀剂
DOI：
10.1016/j.corsci.2014.05.017
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发表时间：
2014-10-01
影响因子：
8.3
通讯作者：
Du, Guanben
中科院分区：
文献类型：
--
作者：
Li, Xianghong;Xie, Xiaoguang;Du, Guanben
The inhibition effect of two phenylpyrimidine derivatives of 4-phenylpyrimidine (4-PPM) and 5-phenylpyrimidine (5-PPM) on the corrosion of cold rolled steel (CRS) in HCl solution was studied by weight loss, polarization curves, electrochemical impedance spectroscopy (EIS) and scanning electron microscope (SEM) methods. Quantum chemical calculation and molecular dynamics (MD) were applied to theoretically determine the relationship between molecular structure and inhibition efficiency. The results show that two phenylpyrimidine derivatives are good inhibitors, and inhibition efficiency follows the order: 4-PPM > 5-PPM. The adsorption of each inhibitor on steel surface obeys Langmuir adsorption isotherm. Two phenylpyrimidine derivatives act as mixed-type inhibitors. (C) 2014 Elsevier Ltd. All rights reserved.
