Preparation of WC-WB-W_2B Composites from B_4C-W-WC Powders and their Mechanical Properties

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Sintered composites of WC–WB–W<SUB>2</SUB>B were prepared from B<SUB>4</SUB>C–W–WC powders using a reactive energization hot-pressing technique that initiated a solid state reaction between B<SUB>4</SUB>C and W. Below a WC mole fraction of 0.769 in the starting powder, WB and WC were formed according to the reaction B<SUB>4</SUB>C+5W+<I>x</I>WC=WB+(1+<I>x</I>)WC, while WB, W<SUB>2</SUB>B, and WC were produced above a mole fraction of 0.854. Densely sintered bodies were not obtained for pure WC. Composites of WC–WB–W<SUB>2</SUB>B obtained at WC mole fractions between 0.854 and 0.956 were fully consolidated, having high Young’s modulus and Vickers hardness values, and a fracture toughness which were comparable to those of WC.

収録刊行物

  • Materials transactions

    Materials transactions 43(5), 1197-1201, 2002-05-01

    公益社団法人 日本金属学会

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各種コード

  • NII論文ID(NAID)
    10012323818
  • NII書誌ID(NCID)
    AA1151294X
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13459678
  • NDL 記事登録ID
    6180576
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z53-J286
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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