Synergistic inhibition effect of rare earth cerium(IV) ion and sodium oleate on the corrosion of cold rolled steel in phosphoric acid solution

被引：90
作者：
Li, Xianghong [1 ]
Deng, Shuduan [2 ]
Fu, Hui [1 ]
Mu, Guannan [3 ]
机构：
[1] SW Forestry Univ, Dept Fundamental Courses, Kunming 650224, Peoples R China
[2] SW Forestry Univ, Fac Wood Sci & Decorat Engn, Kunming 650224, Peoples R China
[3] Yunnan Univ, Dept Chem, Kunming 650091, Peoples R China
来源：
CORROSION SCIENCE | 2010年 / 52卷 / 04期
关键词：
Steel; EIS; Polarization; SEM; Acid inhibition; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; LOW-CARBON STEEL; M H2SO4 SOLUTION; MILD-STEEL; SULFURIC-ACID; HYDROCHLORIC-ACID; IODIDE-IONS; POTASSIUM-IODIDE; WEIGHT-LOSS; THERMODYNAMIC CHARACTERIZATION;
D O I：
10.1016/j.corsci.2009.12.017
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The synergistic inhibition effect of rare earth cerium(IV) ion (Ce(4+)) and sodium oleate (SO) on the corrosion of cold rolled steel (CRS) in 3.0 M phosphoric acid (H(3)PO(4)) has been investigated by weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and scanning electron microscope (SEM) methods. The results reveal that SO has a moderate inhibitive effect and its adsorption obeys Temkin adsorption isotherm. Ce(4+) has a poor effect. However, incorporation of Ce(4+) with SO improves the inhibition performance significantly, and exhibits synergistic inhibition effect. SO acts as a cathodic inhibitor, while SO/Ce(4+) mixture acts as a mixed-type inhibitor. (C) 2009 Elsevier Ltd. All rights reserved.
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收藏
页码：1167 / 1178
页数：12
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