Influence of chloride ion concentration on initial corrosion of AZ63 magnesium alloy

被引：15

作者：

Grgur, Branimir N. ^{[1
]}

Jugovic, Branimir Z. ^{[2
]}

Gvozdenovic, Milica M. ^{[1
]}

机构：

[1] Univ Belgrade, Fac Technol & Met, Karnegijeva 4, Belgrade 11020, Serbia

[2] Inst Tech Sci, Serbian Acad Sci & Arts, Knez Mihailova 35, Belgrade 11000, Serbia

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2022年 / 32卷 / 04期

关键词：

chloride; corrosion potential; linear polarization; reaction order; kinetics; BEHAVIOR; PH; AZ31; IMPEDANCE; MEDIA;

D O I：

10.1016/S1003-6326(22)65861-8

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The initial corrosion behavior of AZ63 magnesium alloy was investigated in 1, 3, 5 and 7 wt.% NaCl solutions by means of corrosion potential, linear polarization, electrochemical impedance spectroscopy, and polarization measurements, during exposure in the corrosion media. Results show that the increase in chloride concentration provokes an increase in the corrosion rate. Based on the obtained kinetics parameters the mechanisms of anodic dissolution and hydrogen evolution reactions were discussed, and kinetic models were proposed. It is concluded that anodic dissolution proceeds under Temkin conditions and hydrogen evolution reaction depends on the surface coverage of Mg(OH)(2) species.

引用

页码：1133 / 1143

页数：11

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