期刊
CORROSION SCIENCE
卷 75, 期 -, 页码 426-433出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2013.06.027
关键词
Magnesium; Zinc; Polarisation; Passivity
The effects of Zn on corrosion behaviour of as-extruded Mg-(1-4)Zn alloys were investigated using an immersion test, a zero resistance ammeter technique, and a potentiodynamic polarisation test. As a result, it was revealed that the solutionised Zn enhanced protectiveness of the passive film, and accelerated the H-2 evolution rate of the Mg-Zn binary alloys. The acceleration of the H-2 evolution rate by addition of Zn leads to an increase in the net corrosion rate of the Mg-Zn alloy. In this research, the polarisation test was found to have some limitations for evaluating the true corrosion behaviour of passive Mg-Zn alloy. (C) 2013 Elsevier Ltd. All rights reserved.
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