S含有純鉄粉を原料としたFe-Cu-C系焼結体中の遊離黒鉛量に及ぼす焼結雰囲気中の水素濃度の影響 Effect of hydrogen gas content in sintering atmosphere on the amount of free graphite in sintered steel made of iron powder containing sulfur, copper powder and graphite powder

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The solute carbon content and the ratio of pearlite in the sintered steel increased and the free graphite content and the sulfur content in the sintered steel decreased with the increase in hydrogen content in the sintered atmosphere during the sintering of green compact made of the iron powder containing sulfur, copper powder and graphite powder, resulting in the deterioration of machinability of the sintered steel.<BR>The amount of decrease in sulfur content during sintering was roughly the same as that calculated, on the assumption of hydrogen reduction of FeS in an equilibrium state.<BR>The Auger spectrum of the iron powder containing sulfur indicated that FeS segregated on the surface of the iron powder. The dilatometry study indicated that the carbon diffusing rate during sintering green compact containing iron powder with sulfur was smaller than that during sintering green compact containing commercially pure iron powder.<BR>These results showed that the free graphite was formed by incomplete carbon diffusion during sintering due to FeS on the surface of the iron powder with sulfur.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 45(10), 909-914, 1998-10-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002052924
  • 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
    4585452
  • 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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