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

1 Citation (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
EditorsMasaaki Naka
PublisherTrans Tech Publications Ltd
Pages215-220
Number of pages6
ISBN (Print)9783908451334
DOIs
Publication statusPublished - 2007
EventInternational Workshop on Designing of Interfacial Structures in Advanced Materials and their Joints, DIS 2006 - Osaka, Japan
Duration: 2006 May 182006 May 20

Publication series

NameSolid State Phenomena
Volume127
ISSN (Print)1012-0394
ISSN (Electronic)1662-9779

Other

OtherInternational Workshop on Designing of Interfacial Structures in Advanced Materials and their Joints, DIS 2006
CountryJapan
CityOsaka
Period06/5/1806/5/20

Keywords

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

ASJC Scopus subject areas

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

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