熔鉄と水素，水蒸気混合ガスとの反応の平衡に対する実験条件の検討

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タイトル別名
  • Investigation on the Best Experimental Condition for Equilibrating Hydrogen with Oxygen in Liquid Iron
  • ヨウテツ ト スイソ , スイジョウキ コンゴウ ガス ト ノ ハンノウ ノ ヘイコウ ニ タイスル ジッケン ジョウケン ノ ケントウ

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抄録

The importance of dissolved oxygen in liquid steel as a refining agent has led to a number of experimental studies on the equilibrium constant of the reaction of hydrogen with oxygen in liquid iron. However, certain discrepancies still remain when the recant several observations(6)(7)(8) are compared with the earlier results by Fontana and Chipman(2) and subsequently by Dastur and Chipman(5) which have generally been accepted. It is the object of this work to reexamine the magnitude of errors caused by thermal diffusion and to investigate the possible errors due to sampling methods for oxygen from liquid metal in order to explain the discrepancies of the equilibrium constant. The results of the present study are summarized as follows: (1) Errors caused by thermal diffusion are not so large as mentioned by Dastur and Chipman(4), and can be eliminated readily by adopting adequate experimental conditions. (2) There are little or no discrepancies among the oxygen determinations from the samples taken by argon-quenching, furnace cooling and suction into a silica tube. In view of the segregation of oxygen in samples, argon-quenching seems to be the most favorable sampling method for the determination of equilibrium constant of this system. Hydrogen-quenching results in considerably high apparent equilibrium constant. (3) The apparent equilibrium constants obtained are between the rusults by Gokcen(7) and by Floridis and Chipman(8).

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 23 (11), 667-670, 1959

    公益社団法人 日本金属学会

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