Inhibitive effect of sodium carbonate on corrosion of AZ31 magnesium alloy in NaCl solution

被引：71
作者：
Prince, L. [1 ]
Rousseau, M-A. [1 ]
Noirfalise, X. [2 ]
Dangreau, L. [2 ]
Coelho, L. B. [1 ]
Olivier, M. -G. [1 ,2 ]
机构：
[1] UMONS Univ Mons, Dept Mat Sci, Pl Parc 20, B-7000 Mons, Belgium
[2] Mat Nova Asbl, Ave Copernic 3, B-7000 Mons, Belgium
来源：
CORROSION SCIENCE | 2021年 / 179卷
关键词：
Magnesium; Polarization; EIS; XPS; Passive film; MG CORROSION; ATMOSPHERIC CORROSION; CONVERSION COATINGS; LOCALIZED CORROSION; SURFACE-CHEMISTRY; BEHAVIOR; CHLORIDE; AZ91D; IONS; XPS;
D O I：
10.1016/j.corsci.2020.109131
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnesium is the world's lightest structural metal, with a significant growth potential in view of the accelerating demand for light-weighting portable devices and transportation (aerospace, automotive), amongst other. The effect of carbonate ions on corrosion protection of AZ31 magnesium alloy was studied in 0.1 M NaCl solution saturated in Mg(OH)(2) using Electrochemical Impedance Spectroscopy (EIS), potentiodynamic polarization measurements, hydrogen evolution tests and SEM-EDX analysis. X-ray Photoelectron Spectroscopy (XPS) was used in order to investigate the top-surface composition. The inhibitive effect of CO32- ions on corrosion of AZ31 magnesium alloy was highlighted and the underlying mechanisms discussed.
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页数：13
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