鋳込み成形によるZrO_2-WC複合体の作製とその機械的性質 Preparation and Mechanical Properties of ZrO_2-WC Composites by Slip-casting Technique

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著者

    • 塩野 剛司 SHIONO Takeshi
    • 京都工芸繊維大学工芸学部物質工学科 Department of Chemistry and Materials Technology, Faculty of Engineering and Design, Kyoto Institute of Technology
    • 福家 章利 FUKE Akitoshi
    • 京都工芸繊維大学工芸学部物質工学科 Department of Chemistry and Materials Technology, Faculty of Engineering and Design, Kyoto Institute of Technology

抄録

In order to study the applicability of a slip-casting technique to preparation of ceramic composites consisting of powders with different specific gravity, the technique was applied to ZrO<SUB>2</SUB>-WC system. During casting process, ZrO<SUB>2</SUB> and WC were afraid to separate due to the difference in their specific gravity, that is, 6.07 for ZrO<SUB>2</SUB> and 15.6 for WC.. For preparing fluidal and thick slurry, the optimum amounts of water and dispersant were determined on the basis of the viscosity and the density of green compacts. The optimum amounts of water and dispersant were 60vol% and 0.35mass%, respectively. The dispersibility was estimated by an EDX analysis and SEM observation. WC powders were found to disperse uniformly in ZrO<SUB>2</SUB> matrix, when the thick slurry consisting of raw powders was cast. The prepared compacts were sintered at a temperature from 1400°C to 1700°C. The density and mechanical properties of composites were improved with an increase in sintering temperature. The bending strength and fracture toughness of the composites sintered at 1700°C were 820MPa and 7.4MPa⋅m<SUB>1/2</SUB>, respectively. The improvement of the boundary between ZrO<SUB>2</SUB> and WC was guessed to make their properties enhanced further.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 43(7), 885-889, 1996-07-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002012624
  • 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
    4004689
  • 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  NDL  J-STAGE 
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