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Oxidation behavior of Mo-Si-B in-situ Composites

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Title: Oxidation behavior of Mo-Si-B in-situ Composites
Authors: Yamauchi, Akira Browse this author
Yoshimi, Kyosuke Browse this author
Murakami, Yoshihiro Browse this author
Kurokawa, Kazuya Browse this author →KAKEN DB
Hanada, Shuji Browse this author
Keywords: molybdenum silicides
in-situ composite
high temperature oxidation
borosilicate
Issue Date: 2007
Publisher: Trans Tech Publications
Journal Title: Designing of Interfacial Structures (Solid State Phenomena: 127)
Start Page: 215
End Page: 220
Abstract: Isothermal oxidation behavior of Al added Mo-Si-B in-situ composites was investigated under Ar-20%O2 and air atmosphere over the temperature range of 1073–1673 K. The Al added Mo-Si-B composites ((Mo-8.7mol%Si-17.4mol%B)-1mol%Al) were prepared by arc-melting, and homogenized at 2073 K for 24 h in an Ar-flow atmosphere. The ternary Mo-Si-B in-situ composite exhibited a rapid mass loss at the initial oxidation stage and then the passive oxidation after the substrates were sealed with borosilicate glass in the temperature range of 1173–1473 K, whereas it exhibited a rapid mass gain around 1073 K. On the other hand, the Al addition significantly improved the oxidation resistance of Mo-Si-B in-situ composites at temperatures from 1073–1573 K. These excellent oxidation resistances are considered to be due to the rapid formation of a continuous, dense scale of Al-Si-O complex oxides.
Description: Proceedings of the International Workshop on Designing of Interfacial Structures in Advanced Materials and their Joints, May, 18-20, 2006, held in Osaka, Japan
Rights: the original is available online at www.scientific.net
Type: article (author version)
URI: http://hdl.handle.net/2115/17157
Appears in Collections:エネルギー・マテリアル融合領域研究センター (Center for Advanced Research of Energy and Material) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 山内 啓

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