Synthesis of TiB2-TiC-Ti3SiC2 composites by reactive hot pressing of B4C-SiC-Ti powder mixtures

  • Taimatsu Hitoshi
    Department of Materials Science and Engineering, Faculty of Engineering and Resource Science, Akita University
  • Sugiyama Shigeaki
    Akita Prefectural Research and Development Center
  • Koseki Shuhou
    Department of Materials Science and Engineering, Faculty of Engineering and Resource Science, Akita University

書誌事項

タイトル別名
  • Synthesis of TiB<SUB>2</SUB>-TiC-Ti<SUB>3</SUB>SiC<SUB>2</SUB> Composites by Reactive Hot Pressing of B<SUB>4</SUB>C-SiC-Ti Powder Mixtures

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抄録

TiB2-TiC-Ti3SiC2 composites were reaction-sintered from B4C-xSiC-(3+2x)Ti (x=0 to 1) powder mixtures using reactive hot pressing, and the phase relation of reaction products and sintering behavior were investigated. The reaction B4C+xSiC+(3+2x)Ti→2TiB2+(1−x)TiC+xTi3SiC2 proceeded fundamentally during hot pressing. Although the reaction demands no production of TiC phase at x=1, TiC phase was formed due to the nonstoichiometry of TiC and Ti3SiC2 phases produced. The hot-pressed composites containing the layered compound Ti3SiC2 had no preferential texture. Both TiB2 and TiC were first produced near 960°C during heating, and then Ti3SiC2 near 1200°C. The product Ti3SiC2 contributed effectively to the densification of the composites above 1450°C.

収録刊行物

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 49 (10), 2335-2340, 2008

    公益社団法人 日本金属学会

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