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

Akira Yamauchi, Kyosuke Yoshimi, Yoshihiro Murakami, Kazuya Kurokawa, Shuji Hanada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

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.

Original languageEnglish
Title of host publicationDesigning of Interfacial Structures in Advanced Materials and their Joints - Proceedings of the Int. Workshop on Designing of Interfacial Structures in Advanced Materials and their Joints, DIS'06
PublisherTrans Tech Publications Ltd
Pages215-220
Number of pages6
ISBN (Print)9783908451334
DOIs
Publication statusPublished - 2007 Jan 1
EventInternational Workshop on Designing of Interfacial Structures in Advanced Materials and their Joints, DIS'06 - Osaka, Japan
Duration: 2006 May 182006 May 20

Publication series

NameSolid State Phenomena
Volume127
ISSN (Print)1012-0394

Other

OtherInternational Workshop on Designing of Interfacial Structures in Advanced Materials and their Joints, DIS'06
CountryJapan
CityOsaka
Period06/5/1806/5/20

Keywords

  • Borosilicate
  • High temperature oxidation
  • In-situ composite
  • Molybdenum suicides

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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  • Cite this

    Yamauchi, A., Yoshimi, K., Murakami, Y., Kurokawa, K., & Hanada, S. (2007). Oxidation behavior of Mo-Si-B in-situ composites. In Designing of Interfacial Structures in Advanced Materials and their Joints - Proceedings of the Int. Workshop on Designing of Interfacial Structures in Advanced Materials and their Joints, DIS'06 (pp. 215-220). (Solid State Phenomena; Vol. 127). Trans Tech Publications Ltd. https://doi.org/10.4028/3-908451-33-7.215