Corrosion of ultra-high-purity Mg in 3.5% NaCl solution saturated with Mg(OH)2

被引：283

作者：

Cao, Fuyong ^{[1
]}

Shi, Zhiming ^{[1
]}

Hofstetter, Joelle ^{[2
]}

Uggowitzer, Peter J. ^{[2
]}

Song, Guangling ^{[3
]}

Liu, Ming ^{[4
]}

Atrens, Andrej ^{[1
]}

机构：

[1] Univ Queensland, Div Mat, St Lucia, Qld 4072, Australia

[2] Swiss Fed Inst Technol, Dept Mat, CH-8093 Zurich, Switzerland

[3] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[4] GM China Sci Lab, Shanghai 201206, Peoples R China

来源：

CORROSION SCIENCE | 2013年 / 75卷

基金：

澳大利亚研究理事会;

关键词：

Magnesium; Weight loss; SEM; BIODEGRADABLE MAGNESIUM IMPLANTS; ANODIC POLARIZATION CURVES; SODIUM-CHLORIDE SOLUTION; PURE MAGNESIUM; GALVANIC CORROSION; SULFATE-SOLUTIONS; DIFFUSION COEFFICIENTS; AQUEOUS-SOLUTION; CRACKING SCC; AL ALLOYS;

D O I：

10.1016/j.corsci.2013.05.018

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Corrosion was evaluated for ultra-high-purity magnesium (Mg) immersed in 3.5% NaCl solution saturated with Mg(OH)(2). The intrinsic corrosion rate measured with weight loss, P-W = 0.25 +/- 0.07 mm y(-1), was slightly smaller than that for high-purity Mg. Some specimens had somewhat higher corrosion rates attributed to localised corrosion. The average corrosion rate measured from hydrogen evolution, P-AH, was lower than that measured with weight loss, P-W, attributed to dissolution of some hydrogen in the Mg specimen. The amount of dissolution under electrochemical control was a small amount of the total dissolution. A new hydride dissolution mechanism is suggested. (c) 2013 Elsevier Ltd. All rights reserved.

引用

页码：78 / 99

页数：22

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