The Synergistic Effect of BTA-Co System on the Corrosion Inhibition of Mild Steel in 3.5 wt% NaCl Solution

被引：58

作者：

Akhavan, Hossein ^{[1
]}

Izadi, Mazdak ^{[1
]}

Mohammadi, Iman ^{[1
]}

Shahrabi, Taghi ^{[1
]}

Ramezanzadeh, Bahram ^{[2
]}

机构：

[1] Tarbiat Modares Univ, Dept Mat Engn, Fac Engn, Tehran 14115143, Iran

[2] ICST, Dept Surface Coatings & Corros, Tehran 16765654, Iran

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2018年 / 165卷 / 10期

关键词：

HYDROCHLORIC-ACID SOLUTION; LOW-CARBON STEEL; HETEROCYCLIC-COMPOUNDS; SELECTIVE OXIDATION; RAMAN-SPECTROSCOPY; CHLORIDE SOLUTION; COBALT COMPLEX; COPPER-ALLOYS; BENZOTRIAZOLE; PERFORMANCE;

D O I：

10.1149/2.1111810jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In this study, the synergistic effect of benzotriazole (BTA) molecules and cobalt cations (Co2+ cations) on the corrosion inhibition of mild steel was studied by electrochemical and surface analysis techniques. The considerable corrosion inhibition efficiency of BTA-Co system was proved by open circuit potential measurements, polarization tests, and electrochemical impedance spectroscopy (EIS) results. Field-emission scanning electron microscopy, energy dispersion spectrometer, X-ray photoelectron spectroscopy, and EIS analysis were employed to characterize the inhibition mechanism of the BTA-Co system. The precipitation of BTA-Co chelate on the steel surface was proposed as the main mechanism for corrosion protection of mild steel in the presence of BTA molecules and Co2+ cations. Also, a mixed-type corrosion inhibition effect of BTA-Co system was shown by polarization tests. (C) 2018 The Electrochemical Society.

引用

页码：C670 / C680

页数：11

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