金属粉末射出成形体における溶融バインダの挙動 Molten Binder Behavior of Metal Injection Molded Compacts

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In order to study the effect of heating on the dewaxed specimens which were metal injection molded varying injection speed and pressure, the structure were observed by an acoustic microscope and a scattering electron microscope, and also the transverse rupture strength was investigated.<BR>According to the acoustic images and back scattering electron images of metal injection molded specimens which were heated over the melting point of polymer and cooled down to room temperature, there were obviously differences between the structures of green and dewaxed specimens. The polymer, which existed around metal powders before melt, flowed into the powder-powder interfaces at over melting point, and then solidified at the powder-powder interfaces and connected the powders at room temperature. Transverse rupture strength of the specimens heated at near the melting point of polymer increased with an increase in heating temperature. The strength of specimen heated at 503K for 300s were approximately six times higher than that of the dewaxed specimens. The flash of specimens heated at over melting point of polymer and cooled down to room temperature was removed easier and the fracture surfaces were smoother than those of dewaxed specimens.

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), 852-857, 1996-07-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002012563
  • 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
    4004683
  • 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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