Determination of Activities in High Carbon Liquid Iron Alloys

高碳液态铁合金活性的测定

• 批准号: 01550519
• 负责人: ICHISE Eiji
• 金额: $ 1.47万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01550519/
• 关键词: Thermodynamics; Activity; High Carbon Iron Alloy; Silver-Manganese Alloy; Knudsen Cell Mass Spectroscopy; FeーMnーC合金の熱力学; Ag-Mn合金の熱力学; Fe-Mn-C合金の熱力学

In order to determine the activity coefficient of Mn in Fe-Mn-C alloy by means of the distribution equilibrium of Mn between Fe-Mn-C alloy and Ag-Mn alloy, it is necessary to know the activity of Mn in the Ag-Mn alloy. Knudsen cell mass spectrometry is employed to study the liquid Ag-Mn alloy. The activity coefficients are determined by the ion intensity ratio method and Gibbs-Duhem integration method. The activity curves at 1573K and 1523K are obtained. The following activity coefficients of Mn at infinite dilution are obtained.The activities of Mn and C in liquid Fe-Mn-C alloys in the concentration range, N_<Mn> : 0 0.4, N_C : 0.04 0.1, are determined. The distribution equilibrium of Mn between liquid Fe-Mn-C alloy and liquid Ag-Mn alloy at various Mn potential and C concentration are studied. The obtained data are analyzed by assuming that liquid Fe-Mn alloy obeys ideal solution and that it is enough to consider up to the second order interaction in expressing the composition dependence of the activity coefficient. The following results are obtained.

为了通过Fe-MN-C合金和AG-MN合金之间的MN分布平衡来确定MN在Fe-MN-C合金中的活性系数，有必要了解Mn合金中Mn的活性。 Knudsen细胞质谱法用于研究液体AG-MN合金。活性系数由离子强度比方法和Gibbs-Duhem整合方法确定。获得了1573K和1523K的活动曲线。获得了无限稀释时Mn的以下活性系数。浓度范围内的液体Fe-Mn-C合金中Mn和C的活性，N_ <mn>：0 0.4，N_C：0.04 0.1。研究了液体Fe-Mn-C合金和液体AG-MN合金之间在各种MN电位和C浓度下的Mn分布平衡。通过假设液体Fe-Mn合金OBEYS理想解决方案来分析所获得的数据，并且足以在表达活性系数的组成依赖性时考虑到二阶相互作用。获得以下结果。

项目成果

一瀬 英爾: "高炭素濃度域での溶融鉄合金の活量動定" 日本鉄鋼協会1992年度秋期大会.

Eiji Ichinose：“高碳浓度区域铁水合金活动动态的测定”日本钢铁研究所1992年秋季会议。