期刊
CORROSION SCIENCE
卷 79, 期 -, 页码 69-82出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2013.10.028
关键词
Magnesium; EPMA; XPS; Pitting corrosion; Oxidation
资金
- National Natural Science Foundation of China [51241001]
- Natural Science Foundation of Shandong Province [ZR2011EMM004]
- Open Foundation of State Key laboratory for Corrosion and Protection [SKLCP2012KF03]
- Taishan Scholarship Project of Shandong Province [TS20110828]
- Scientific Research Foundation of Shandong for Outstanding Young Scientist [BS2013CL009]
- Doctoral Program Foundation of State Education Ministry [20133718120003]
The influence of the microstructure and the oxide film of the Mg-9.29Li-0.88Ca alloy on its corrosion behaviour was investigated using SEM, EPMA, XPS and corrosion measurements. The results demonstrated that the fine-grained microstructure improved the mechanical and corrosion resistance of the alloy and shifted pitting corrosion to overall corrosion. The oxide film contained a multi-layered structure, with the outer layer being enriched in lithium-bearing compounds; the interior layer predominantly consisting of oxides, hydroxides and carbonates of lithium and magnesium; and the bottom layer containing oxides. The Pilling-Bedworth ratio for chemical compounds was proposed, and the corrosion rates were characterised. (C) 2013 Elsevier Ltd. All rights reserved.
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