期刊
CORROSION SCIENCE
卷 53, 期 4, 页码 1401-1407出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2011.01.008
关键词
Magnesium; EIS; Polarization; SEM; Neutral inhibition
资金
- Natural Science Foundation of Chongqing, China (CSTC) [2005884055]
- Southwest Normal University [XSGX06]
The poor corrosion resistance of magnesium alloys is a major impediment to their applications in many fields. In this paper, sodium silicate as a corrosion inhibitor is studied on the inhibition effect of AZ91D magnesium alloy. From the results of the corrosion tests, sodium silicate could effectively improve the corrosion resistance of alloy at the optimum concentration 10 mmol/L, while the pH value range from 10.5 to 12.5 is preferable. The corrosion inhibition mechanism of the protective layers is also discussed. These results can provide a guide for the protection of magnesium alloy in the cooling water systems, etc. (c) 2011 Elsevier Ltd. All rights reserved.
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