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

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Title: Fabrication of TiB2 Particle Dispersed FeAl-based Composites by Self-propagating High-temperature Synthesis
Authors: Matsuura, Kiyotaka Browse this author →KAKEN DB
Obara, Yuki Browse this author
Kudoh, Masayuki Browse this author
Keywords: ceramic
hard metal
powder metallurgy
combustion synthesis
Issue Date: Jun-2006
Publisher: Iron and Steel Institute of Japan
Journal Title: ISIJ International
Volume: 46
Issue: 6
Start Page: 871
End Page: 874
Publisher DOI: 10.2355/isijinternational.46.871
Abstract: 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.
Rights: 著作権は日本鉄鋼協会にある
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 松浦 清隆

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