Inhibitive Performance of Benzotriazole for Steel Corrosion Studied by Electrochemical and AFM Characterization

被引：10

作者：

Feng, Yuanchao ^{[1
]}

Cheng, Y. Frank ^{[1
]}

机构：

[1] Univ Calgary, Dept Mech & Mfg Engn, Calgary, AB T2N 1N4, Canada

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2015年 / 24卷 / 12期

基金：

加拿大自然科学与工程研究理事会;

关键词：

atomic force microscope; corrosion; electrochemical measurements; inhibitor benzotriazole; COLD-ROLLED STEEL; HYDROCHLORIC-ACID; CHLORIDE;

D O I：

10.1007/s11665-015-1805-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, the inhibiting effect of benzotriazole (BTA) on corrosion of X65 pipeline steel in bicarbonate solution was investigated by electrochemical measurements, including open-circuit potential, potentiodynamic polarization curves and electrochemical impedance spectroscopy, and atomic force microscopy characterization. It is found that BTA is effective to inhibit the steel corrosion, and the inhibiting efficiency is increased by the increasing inhibitor concentration. The BTA is an anodic inhibitor, which shifts the corrosion potential of the steel less negatively and decreases the anodic current density at individual potential. A layer of inhibitor film is formed on the steel surface to reduce the corrosion rate of the steel. The formed film is quite smooth, with a roughness at the nano-meter scale.

引用

页码：4997 / 5001

页数：5

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