Fabrication of TiB2 Particle Dispersed FeAl-based Composites by Self-propagating High-temperature Synthesis

• Matsuura Kiyotaka

  Graduate School of Engineering, Hokkaido University

• Obara Yuki

  Graduate School of Engineering, Hokkaido University

• Kudoh Masayuki

  Graduate School of Engineering, Hokkaido University

抄録

FeAl–TiB₂ composites have been produced from mixtures of Fe, Al, Ti and B powders using the Self-propagating High-temperature Synthesis (SHS or combustion synthesis) method. When the powder mixture was heated in vacuum to approximately 900 K, an abrupt increase in temperature was observed, indicating that the SHS reaction occurred in the powder mixture. The treating time from the start of heating to the end of the exothermic reaction was only approximately two minutes. X-ray diffraction analyses revealed that the SHS sample consisted of only FeAl and TiB₂ without any elemental metals and any other compounds. Metallographic investigations using a scanning electron microscope and an electron probe microanalysis revealed that fine TiB₂ particles were dispersed in FeAl matrix phase. As the volume fraction of the TiB₂ particles was increased from 0.3 to 0.8 by controlling the powder mixture composition, the average TiB₂ particle size increased from 1 to 7 μm and the average Vickers hardness of the composites increased from 800 to 1 600.

収録刊行物

• ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ

  ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ 46 (6), 871-874, 2006

  一般社団法人 日本鉄鋼協会

キーワード

• ceramic
• intermetallic
• hard metal
• powder metallurgy
• combustion synthesis
• SHS

詳細情報

• CRID: 1390001206487226624
• NII論文ID: 10018047129
• NII書誌ID: AA10680712
• DOI: 10.2355/isijinternational.46.871
• COI: 1:CAS:528:DC%2BD28XmtlOlsbs%3D
• ISSN: 13475460
• ISSN: 09151559
• HANDLE: 2115/75735
• Web Site: http://www.jstage.jst.go.jp/article/isijinternational/46/6/46_6_871/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • IRDB
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可