Ni粉成形多孔体の焼結挙動へのカプセルフリーHIPおよび真空雰囲気の影響 Effect of Surrounding Pressures under Capusle-Free HIP and Vacuum on Sintering Behaviors of Porous Ni Pressed Powder

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The sintered porous nickel is very important as electrode materials and have been used widely. In this work, the effect of surrounding pressure under capsule-free HIP (CFHIP) and vacuum on sintering behaviors concerned with the volume shrinkage, the relative density and the surface microstructure of the porous Ni sintered for 1 hour at 1073K or 1173K were investigated. The results obtained are as follows. The volume shrinkage and the relative density, as a function of the relative density before sintering, of the porous Ni sintered under CFHIP became larger than for ones sintered under vacuum at each of the sintering temperatures. These sintering behaviors of the porous Ni formed from the smaller particle size powder were accelerated under the both surrounding pressures, CFHIP or vacuum, and at both sintering temperatures. In case of under CFI-IIP, the neck growth of Ni powder was promoted at either sintering temperature as compared with under vacuum and this fact was emphasized at the elevated temperature. And the surface of porous Ni sintered under CFHIP was made smoother than ones sintered under vacuum for every Ni powder and at the each sintering temperature.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 43(1), 122-127, 1996-01-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002011192
  • 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
    3918046
  • 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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