Synthesis of Mo-Si-B in situ composites by mechanical alloying

Akira Yamauchi, Kyosuke Yoshimi, Kazuya Kurokawa, Shuji Hanada

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

In this study, the synthesis of Mo-Si-B multi-phase alloys, so-called in situ composites, was attempted with the combination of mechanical alloying (MA) and spark plasma sintering (SPS) processes. MA was conducted with mixed powders of Mo, Si and B using a planetary ball mill under various milling conditions. MAed powders were characterized by X-ray diffractometry (XRD) and scanning electron microscopy (SEM). The results obtained by XRD indicated that Mo-Si-B alloyed powders were successfully produced when elemental powders were milled at a higher milling energy. Vacuum heat treatments after the MA process promoted the formation of Mo-Si-B intermetallic phase in MAed powders. MAed powders were successfully consolidated by SPS and sound compacts of Mo5SiB2-based composites were synthesized.

Original languageEnglish
Pages (from-to)420-423
Number of pages4
JournalJournal of Alloys and Compounds
Volume434-435
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2007 May 31

Keywords

  • Mechanical alloying
  • Molybdenum silicides
  • Spark plasma sintering
  • X-ray diffraction

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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