期刊
CORROSION SCIENCE
卷 51, 期 6, 页码 1328-1333出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2009.03.019
关键词
Magnesium; Rare earth elements; EIS; Polarization; XPS
资金
- CAS
- Science Program of the Promotes Northeast of CAS [KGCX2-SW-216]
The electrochemical corrosion behavior of Mg-5Al-0.4Mn-xNd (x = 0, 1, 2 and 4 wt.%) alloys in 3.5% NaCl solution was investigated. The corrosion behavior of the alloys was assessed by open circuit potential measure, potentiodynamic polarization, and electrochemical impedance spectroscopy. The electrochemical results show the intermetallic precipitates with Nd behave as less noble cathodes in micro-galvanic corrosion and suppress the cathodic process. During corrosion, Al2O3 and Nd2O3, in proper ratio, is incorporated into the corrosion film, and enhances the corrosion resistance. (C) 2009 Elsevier Ltd. All rights reserved.
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