Si_3N_4-BN非晶質複合粉体の相分離結晶化挙動に及ぼす加圧および焼結助剤の効果 Effect of Applied Pressure and Sintering Aid on Phase Separation and Crystallization Behavior of Amorphous Si_3N_4-BN Composite Powder

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著者

    • 釘本 弘訓 KUGIMOTO Hironori
    • 九州大学大学院工学府物質創造工学専攻 Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University
    • 上原 雅人 UEHARA Masato
    • 九州大学大学院工学研究院応用化学部門 Department of Applied Chemistry, Faculty of Engineering, Kyushu University
    • 北條 純一 HOJO Junichi
    • 九州大学大学院工学研究院応用化学部門 Department of Applied Chemistry, Faculty of Engineering, Kyushu University

抄録

Si<SUB>3</SUB>N<SUB>4</SUB>-BN nanocomposites are formed via phase separation and crystallization of amorphous Si<SUB>3</SUB>N<SUB>4</SUB>-BN composite powder during sintering. Amorphous Si<SUB>3</SUB>N<SUB>4</SUB>-BN composite powders were prepared by a vapor phase reaction method. To clarify the effect of applied pressure and sintering aid on the phase separation and crystallization behavior, the composite powders were hot-pressed and pressurelessly sintered with and without Y<SUB>2</SUB>O<SUB>3</SUB>-Al<SUB>2</SUB>O<SUB>3</SUB> sintering aid. Si<SUB>3</SUB>N<SUB>4</SUB> crystallized into α-phase at 1600°C without sintering aid, and into β-phase at 1400°C with sintering aid. It was found that the crystallization of Si<SUB>3</SUB>N<SUB>4</SUB> and BN was promoted by applied pressure and sintering aid. On the other hand, the phase separation of BN from Si<SUB>3</SUB>N<SUB>4</SUB> occurred around 1400°C regardless of applied pressure and sintering aid.

収録刊行物

  • 粉体および粉末冶金

    粉体および粉末冶金 49(6), 491-495, 2002-06-15

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10008833479
  • 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
    6190589
  • 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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