B_4CとTiの反応性放電プラズマ焼結法によるTiB_2-TiC複合体の合成 Synthesis of a TiB_2-TiC Composite by Reactive Spark Plasma Sintering of B_4C and Ti

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A composite of TiB<SUB>2</SUB> and TiC was synthesized from B<SUB>4</SUB>C and Ti powders by spark plasma sintering accompanied with the solid-state displacement reaction of them. In the early stages of the reaction, TiB, TiB<SUB>2</SUB>, Ti<SUB>3</SUB>B<SUB>4</SUB>, and TiC were formed as reaction. products, and finally they were changed completely into TiB<SUB>2</SUB> and TiC. Relative density of composites reached more than 99 % at 1800°C and above. At 1800°C and below the composites had unique microstructure; TiB<SUB>2</SUB> phases formed networks surrounding TiC phases. The network structure disappeared at higher temperatures, and TiB<SUB>2</SUB> phases were dispersed more homogeneously in TiC phases. The composites obtained at 2000°C had mechanical properties of Young's modulus 514 GPa, Poisson's ratio 0.18, Vickers hardness 2090 and fracture toughness 3.8 MPa m<SUP>0.5</SUP>

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 45(11), 1065-1070, 1998-11-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002053238
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    4608380
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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