Influence of cerium addition on the resistance to oxidation of AM50 alloy prepared by rapid solidification

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 outweig...

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Bibliographic Details
Published inCorrosion science Vol. 52; no. 2; pp. 416 - 421
Main Authors Lin, Peng-yu, Zhou, Hong, Sun, Na, Li, Wen-ping, Wang, Cheng-tao, Wang, Ming-xing, Guo, Qing-chun, Li, Wei
Format Journal Article
LanguageEnglish
Published Kidlington Elsevier Ltd 01.02.2010
Elsevier
Subjects
A. Alloy
A. Magnesium
A. Rare-earth elements
Applied sciences
B. SEM
C. Oxidation
Corrosion
Corrosion environments
Exact sciences and technology
Metals. Metallurgy
B. SEM
A. Magnesium
A. Rare-earth elements
C. Oxidation
A. Alloy
Scanning electron microscopy
Lanthanide
Cerium
Cerium addition
Corrosion
Rapid solidification
Oxidation
Microstructure
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Summary: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.
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2009.09.029