The Determination of the Activities in Mn-C and Mn-Si Melts
نویسنده
چکیده
The activities of manganese in Mn-C and Mn-Si melts at 1673K have been determined. The transportation method was applied to the vapor pressure measurement. The activities of manganese in the Mn-C melts as referred to pure liquid manganese showed the positive deviation from ideality at less than 0.17 atomic fraction of carbon and deviated negatively above this value. The activities of manganese and silicon in the Mn-Si melts showed a remarkable negative deviation from ideality. Some thermodynamic quantities at 1773K were calculated on the assumption that the Mn-Si melts are considered to be a semi-regular solution. (Received May 7, 1979)
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