High-Temperature Reaction Process of Si-Ti Powder Mixtures under a Nitrogen Gas.

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  • Uno Masanobu
    Graduate School, Osaka Prefecture University
  • Tsuda Hiroshi
    Department of Metallurgy and Materials Science, Osaka Prefecture University
  • Mabuchi Hiroshi
    Department of Metallurgy and Materials Science Osaka Precture University, and Research Institute for Advanced Science and Technoloty, Osaka Prefecture University
  • Morii Kenji
    Department of Metallurgy and Materials Science, Osaka Prefecture University

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Other Title
  • Ｓｉ，Ｔｉ混合粉末の窒素ガス下における高温反応プロセス
  • Si Ti コンゴウ フンマツ ノ チッソ ガスカ ニ オケル コウオン ハン

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Abstract

In this work, high-temperature reaction process with gaseous nitrogen led Si and Ti powders, Si and titanium silicide powders or titanium silicide powders to two phase ceramic composites consisting of Si3N4 (α-Si3N4 and β-Si3N4) and TiN. The results of X-ray diffraction analysis showed there are remarkable differences in the ratio of α-Si3N4/β-Si3N4 between the specimen used elemental powders and that used intermetalic powders. That is mainly caused by a difference in the starting temperature and reactivity of silicon nitridation. Thus, it is promising for synthesis of Si3N4-TiN composite powders to use intermetalic powders.

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