高速遠心成形法による高純度アルミナの焼結中における気孔組織の変化 Morphological Development of Pores during Sintering in High Purity Alumina Formed by High-speed Centrifugal Compaction Process

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To elucidate the causes of the superior mechanical properties of the alumina developed by the high-speed centrifugal compaction process, its microstructure development during sintering is investigated. A high purity alumina powder with a purity of 99.99% and a mean particle size of 0.22μm is dispersed in 25 mass% of ion-exchanged water, compacted applying acentrifugal force of 10, 000-20, 000g for 3ks, and sintered at 1423-1773 K for 5.4ks in air.<BR>Homogeneous sintered compacts with a relative density of 99% or more and free from abnormal grain growth are obtained without using any additives in a wide range of sintering conditions. On tens of fracture surfaces observed, no sign of inhomogeneity such as large grain, large pore, or inclusion is observed. Instead, each specimen contains a little intergranular porosity. At low sintering temperatures, pores remain at the fbur-grain corners which. are thermodynamically the most stable sites. As the sintering temperature increases, the pores change their locations gradually from four-grain corners to three-grain edges, then to two-grain boundaries.<BR>The strongest specimen, the one sintered at 1503K for 5.4ks, shows homogeneous equiaxed grains with equiaxed and simple-shaped pores located at four-grain comers.

収録刊行物

  • 粉体および粉末冶金

    粉体および粉末冶金 45(5), 473-479, 1998-05-15

    Japan Society of Powder and Powder Metallurgy

参考文献:  21件中 1-21件 を表示

  • <no title>

    KNUDSEN F. P.

    J. Am. Ceram. Soc. 41, 376-387, 1959

    被引用文献1件

  • <no title>

    DUCKWORTH W.

    J. Am. Ceram. Soc. 36, 68, 1953

    被引用文献4件

  • <no title>

    PASSMORE E.M.

    J. Am. Ceram. Soc. 48, 1-7, 1965

    被引用文献4件

  • <no title>

    田島俊造

    粉体および粉末冶金 39, 39-43, 1992

    被引用文献2件

  • <no title>

    田島俊造

    粉体および粉末冶金 39, 272-276, 1992

    被引用文献1件

  • <no title>

    田島俊造

    粉体および粉末冶金 40, 12-15, 1993

    被引用文献1件

  • <no title>

    TASHIMA S. and KUROKI H.

    Proc. Powd. Metall. World Congress, Kyoto, 883-886, 1993

    被引用文献1件

  • <no title>

    田島俊造

    粉体および粉末冶金 41, 180-183, 1994

    被引用文献1件

  • <no title>

    KINGERY W. D. and FRANCOIS B.

    Sintering and Related Phenomena, 471-498, 1967

    被引用文献1件

  • <no title>

    COBLE R. L.

    J. Appl. Phys. 32, 787-792, 1961

    被引用文献6件

  • <no title>

    R. W. ダヴィジ著

    セラミックスの強度と破壊 14, 1982

    被引用文献1件

  • <no title>

    HAULER A. H.

    J. Am. Ceram. Soc. 52, 510, 1969

    被引用文献1件

  • <no title>

    BENNISON S. J. and HARMER M. P.

    J. Am. Ceram. Soc. 68, C22-C24, 1985

    被引用文献1件

  • <no title>

    COBLE R. L.

    J. Am. Ceram. Soc. 45, 123-127, 1962

    被引用文献4件

  • <no title>

    HSUEH C. H. and EVANS A. G.

    Acta Metall 31, 189-198, 1982

    被引用文献1件

  • <no title>

    CARNIGLIA S. C.

    J.Am.Ceram.Soc. 55, 243-249, 1972

    DOI 被引用文献6件

  • 低融点合金一体金型によるアルミナ超微粉の高速遠心成形

    田島 俊造 , 堀 真一 , 黒木 英憲

    粉体および粉末冶金 42(3), 293-297, 1995-03-15

    J-STAGE DOI 参考文献6件 被引用文献4件

  • <no title>

    KOIKE J.

    Mater. Sci. and Eng., A A220, 26-34, 1996

    被引用文献6件

  • Grain Growth Transition During Sintering of Colloidally Prepared Alumina Powder Compacts

    CAMERON C. P.

    J. Am. Ceram. Soc. 71, 1031-1035, 1988

    被引用文献6件

  • <no title>

    THOMPSON A. M.

    J. Am. Ceram. Soc. 76, 2248-2256, 1993

    被引用文献2件

  • <no title>

    HSUEH C. H.

    Acta Metall. 30, 1269-1279, 1982

    被引用文献2件

被引用文献:  4件中 1-4件 を表示

各種コード

  • NII論文ID(NAID)
    10002015644
  • 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
    4481806
  • 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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