期刊
CORROSION SCIENCE
卷 52, 期 2, 页码 416-421出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2009.09.029
关键词
Alloy; Magnesium; Rare-earth elements; SEM; Oxidation
资金
- Key Technologies tenth FiveYear Plan RD Programme [2001BA311A05-2]
- Jilin University
- China Scholarship Council
The influence of various cerium (Ce) additions and starting temperature on the resistance to oxidation of AM50 alloy prepared by rapid solidification (RS, RS-AM50 alloy) has been investigated. The Ce addition has two opposite effects on the oxide scale. To the RS-alloy, the beneficial effect outweighs the detrimental one. However, when the alloy was prepared by slow solidification at the normal cooling rate (SS, SS-AM50 alloy), the detrimental effect was dominant. The improvement of oxide scale is closely related to the adherence of metal/oxide and tightness of oxide scale of the alloy. In addition, the reaction rate at the surface increased with starting temperature, which finally results in the formation of a protective oxide scale. (c) 2009 Elsevier Ltd. All rights reserved.
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