<報文>溶融鉄中の諸元素のInteraction Parameterについて

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  • ヨウユウテツ チュウ ノ ショ ゲンソ ノ Interaction Parameter ニ ツイテ
  • <Original Papers>Interaction Parameters of Alloying Elements in Molten Iron

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Interaction parameters of alloying elements in molten iron were caculated statistico-thermodynamically by using the modified Mott's equation. Four equations for the interaction parameters of four types of alloys, namely, the substitutional-substitutional, the substitutional-interstitial ternary alloys the substitutional and interstitial binary alloys, were obtainde by the statistico-thermodynamic calculations by assuming relatively simple models. Interaction parameters of 71 alloy systems were calculated by the equations obtained. The activity of chromium in liquid Fe-Cr and Fe-Cr-X (X : Co, Ni, Cu, Mo, Si, P) sytems was measured by a vaporization method by using radioactive chromium. Then, the interaction parameters of liquid Fe-Cr and Fe-Cr-X systems were determined. The experimental values of interaction parameters of Fe-Cr and Fe-Cr-X systems together with those of Fe-Ni-X, Fe-C-X, Fe-S-X and Fe-X alloys (total of 38 systems) were compared with the calculated values. Of the 38 systems, 76 per cent showed a reasonable agreement within ±20 per cent, 8 per cent showed agreement only in their signs, and disagreement was observed only in 16 per cent.

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