| 铜基合金中溶质元素的Lnr0i的模型计算 |
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| 引用本文： | 王福明,李文超,张宁欣,韩其勇. 铜基合金中溶质元素的Lnr0i的模型计算[J]. 稀有金属, 1998, 22(4): 300-303 |
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| 作者姓名： | 王福明 李文超 张宁欣 韩其勇 |
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| 作者单位： | 北京科技大学理化系 |
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| 摘 要： | 采用自由体积理论和Ｍｉｅｄｅｍａ生成热模型，导出了液态合金中溶质元素的ｌｎｒｉ０的计算公式；计算了１２７３Ｋ下铜液中溶质元素的ｌｎｒｉ０。结果表明，计算值和实验值的正负号一致率为９０％，并基本处于同一数量级。
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| 关 键 词： | 自由体积理论 Miedema生成热模型 活度系数(r_i)~0 铜基合金体系 |
Model Calculation of lnri0 for Solute Elements in Copper-base Alloy Systems |
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| Wang Fuming,Li Wenchao,Zhang Ningxin,Han Qiyong. Model Calculation of lnri0 for Solute Elements in Copper-base Alloy Systems[J]. Chinese Journal of Rare Metals, 1998, 22(4): 300-303 |
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| Authors: | Wang Fuming Li Wenchao Zhang Ningxin Han Qiyong |
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| Abstract: | The calculation formula of ln r i 0 for a solute element i in a liquid alloy was derived by use of free volume theory and Miedema formation enthalpy model. The values of ln r i 0 of solute elements in liquid copper at 1273 K were obtained. The results showed that the coincidence rate of sign (positive or negative) is 90% for calculation and experimental values which are basically in the same magnitude. |
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| Keywords: | Free volume theory Miedema formation model Activity coefficient r i 0 Copper base alloy system |
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