An investigation of the corrosion mechanisms of WE43 Mg alloy in a modified simulated body fluid solution: The effect of electrolyte renewal

被引：105

作者：

Ascencio, M. ^{[1
]}

Pekguleryuz, M. ^{[2
]}

Omanovic, S. ^{[1
]}

机构：

[1] McGill Univ, Dept Chem Engn, Montreal, PQ H3A 0C5, Canada

[2] McGill Univ, Dept Min & Mat Engn, Montreal, PQ H3A 0C5, Canada

来源：

CORROSION SCIENCE | 2015年 / 91卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Alloy; Magnesium; EIS; SEM; Interfaces; Oxidation; IN-VIVO CORROSION; RARE-EARTH ALLOY; MAGNESIUM ALLOYS; PURE MAGNESIUM; ELECTROCHEMICAL-BEHAVIOR; DEGRADATION BEHAVIOR; CORONARY-ARTERIES; ABSORBABLE METAL; 2ND PHASES; CHLORIDE;

D O I：

10.1016/j.corsci.2014.11.034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of daily electrolyte renewal on the corrosion mechanisms and kinetics of WE43 Mg alloy in a modified simulated body fluid (m-SBF) is investigated by electrochemical, hydrogen evolution, analytical and surface characterization techniques. It is shown that by performing electrolyte renewal, physiological control of corrosion products and concentration of relevant electrolyte components such as calcium, phosphate and carbonate species, can be better emulated. Electrolyte renewal affects the corrosion mechanism by promoting partial dissolution of the corrosion layer and increasing mass transport, thereby delaying the increase in the corrosion layer protective ability and the occurrence of localized corrosion. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：297 / 310

页数：14

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