黒鉛球状化阻害元素を含有する鋳鉄の黒鉛形状と界面工ネルギー

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書誌事項

タイトル別名
  • The Interfacial Energy and the Shape of Graphite in Cast Iron Containing Anti-Spheroidizing Elements
  • 黒鉛球状化阻害元素を含有する鋳鉄の黒鉛形状と界面エネルギー
  • コクエン キュウジョウカ ソガイ ゲンソ オ ガンユウスル チュウテツ ノ コ

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抄録

  Molten irons containing anti-spheroidizing elements, such as Cu, Pb, Sn and Se, were treated with Mg, and the interfacial energies of the melts to specific planes of graphite crystal were measured using the sessile drop technique. In the molten irons containing Cu and Pb treated with Mg, the interfacial free energy ratios of single crystalline graphite were higher than those of polycrystalline graphite when the irons reached the measuring temperature. With holding time, the ratios of single crystalline graphite were lowered and became lower than those of polycrystalline graphite, but the differences were little. These irons had mostly spheroidized graphites. In Sn-containing Mg-treated molten iron, the ratio of polycrystalline graphite was slightly higher than that of single crystalline graphite. The iron had spheroidized graphites and flake graphites. In Se-containing Mg-treated molten iron, the ratios of poly- and single-crystalline graphite were almost the same as those in the Se-containing untreated molten iron. Flake graphites are more stable than spheroidal graphites in the iron. The interfacial free energy ratio is, therefore, a deciding parameter of graphite spheroidization in cast iron.

収録刊行物

  • 鋳物

    鋳物 51 (5), 287-291, 1979

    公益社団法人 日本鋳造工学会

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