Performance evaluation of triethanolamine as corrosion inhibitor for magnesium alloy in 3.5 wt% NaCl solution

被引：56

作者：

Shang, Wei ^{[1
]}

He, Chubin ^{[1
]}

Wen, Yuqing ^{[1
]}

Wang, Yuanyuan ^{[1
]}

Zhang, Zhe ^{[1
]}

机构：

[1] Guilin Univ Technol, Guangxi Key Lab Electrochem & Magnetochem Funct M, Coll Chem & Bioengn, Guilin 541004, Peoples R China

来源：

RSC ADVANCES | 2016年 / 6卷 / 115期

基金：

中国国家自然科学基金;

关键词：

MILD-STEEL CORROSION; SCHIFF-BASE COMPOUNDS; CARBON-STEEL; DOUBLE-LAYER; IRON; ADSORPTION; DERIVATIVES; CAPACITANCE; MECHANISMS; MORPHOLOGY;

D O I：

10.1039/c6ra23203e

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

The corrosion inhibition performance of triethanolamine (TEA) with AZ91D magnesium alloy in 3.5 wt% NaCl solution has been studied using an immersion experiment, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, surface analysis, and quantum chemical methods. The results revealed that TEA was a good corrosion inhibitor. The polarization plots indicated that TEA served as a mixed-type inhibitor. The adsorption of TEA molecules was found to follow the Langmuir adsorption isotherm, which was a spontaneous, exothermic process of increased entropy. TEA could considerably improve the corrosion resistance of the Mg alloy in 3.5 wt% NaCl.

引用

页码：113967 / 113980

页数：14

共 63 条

[1]

Analysis of raw and trend removed EN data in time domain to evaluate corrosion inhibition effects of New Fuchsin dye on steel corrosion and comparison of results with EIS [J].