高周波熱プラズマによる球状銅系サブミクロン粒子の作製 Spherical Submicron-size Copper and Copper-tungsten Powders Prepared in RF Induction Thermal Plasma

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著者

    • 小林 法夫 KOBAYASHI Norio
    • (独)物質・材料研究機構 ナノセラミックスセンター Nano Ceramics Center, National Institute for Material Science
    • 李 継光 LI Ji-Guang
    • (独)物質・材料研究機構 ナノセラミックスセンター Nano Ceramics Center, National Institute for Material Science
    • 渡辺 隆行 WATANABE Takayuki
    • 東京工業大学 総合理工学研究科 化学環境学専攻 Department of Environmental Chemistry and Engineering, Tokyo Institute of Technology
    • 石垣 隆正 ISHIGAKI Takamasa
    • (独)物質・材料研究機構 ナノセラミックスセンター Nano Ceramics Center, National Institute for Material Science

抄録

Spherical submicron copper particles were synthesized through evaporation and subsequent condensation of copper powders in Ar-H<SUB>2</SUB> thermal plasma. Copper powders of ∼40μm in size injected into the plasma, evaporated instantly and fine particles were formed through homogeneous nucleation and subsequent heterogeneous condensation. Particle size and the distribution in the synthesized powders were changed depending on the powder feed rate. Formation of submicron size spherical powders attributed to a significantly high degree of supersaturation in a vapor phase. Particle sizes of the as-produced powders range from submicron to several tens of micrometers. A simple sedimentation treatment was successfully applied to separate the as-formed powders with alcohol solvent to give uniform spherical submicron-size particles with monomodal size distributions. Cu-W composite powders were synthesized through the Ar-H<SUB>2</SUB> plasma treatment of Cu-WO<SUB>3</SUB> composite powders. The starting temperature of shrinkage was made significantly higher than pure Cu powders by mixing with several wt% of W.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 54(1), 39-43, 2007-01-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10018499511
  • 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
    8669983
  • 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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