期刊
CORROSION SCIENCE
卷 89, 期 -, 页码 101-110出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2014.08.015
关键词
Magnesium alloy; Lutetium; AZ31; Magnesium; Alloy; Rare earth elements
资金
- Spanish Ministry of Economy and Competitiveness [MAT 2009-13530]
- Australian Research Council
In the present study, Mg-alloy AZ31 was alloyed with low-level lutetium (Lu) additions, with the aim of generating a more protective surface oxide/film. To stimulate Lu-rich surface films, AZ31 + Lu specimens were heat treated at 400 degrees C for up to 300 min. Lu was not detected in the alpha-Mg matrix by EDXS; instead it was incorporated in Al-Mn-Lu particles. Micro-additions of Lu promoted a significant reduction of corrosion rates of as-cast AZ31, although Lu was not detected in the surface oxide as determined by XPS. The subsequent heat treatment of as-cast AZ31 + Lu had a negative impact upon corrosion. (C) 2014 Elsevier Ltd. All rights reserved.
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