| 金属晶体中空位的化学位 |
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| 引用本文： | 孙军 Tyson,RW. 金属晶体中空位的化学位[J]. 稀有金属材料与工程, 2000, 10(5): 301-303 |
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| 作者姓名： | 孙军 Tyson RW |
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| 作者单位： | 1. 西安交通大学,西安,710049
2. 加拿大材料技术国家实验室,加拿大,K1A0G1 |
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| 基金项目： | Joint- program(key- project) supported by National Natural Science Foundation of China(No5 988910 1)，theOutstanding Young In |
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| 摘 要： | 本文基于纯金属中的原子／空位双组元模型，由空位的偏摩尔自由能定义给出了金属晶体中空位化学位的表达式。对于含有空位摩尔浓度为Ｃυ，其热力学平衡态空位摩尔浓度为Ｃ０的纯金属晶体，在环境温度为Ｔ时，其空位化学位的表达式则为：μυ（Ｃυ）＝ＲＴ＋ＲＴｌｎ（Ｃυ／Ｃ０）；热力学平衡态时为：μυ（Ｃ０）＝ＲＴ。上式中的第二项为由Ｊ．Ｐ．Ｈｉｒｔｈ＾「１」所给出的“相对于标准（热力学平衡）态的空位化学位”，而第
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| 关 键 词： | 金属晶体 原子／空位 双组元模型 化学位 |
The Chemical Potential of Vacancies in Metal Crystal |
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| Sun Jun,W.R.Tyson. The Chemical Potential of Vacancies in Metal Crystal[J]. Rare Metal Materials and Engineering, 2000, 10(5): 301-303 |
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| Authors: | Sun Jun W.R.Tyson |
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| Abstract: | In this paper, a concept, the chemical potential of vacancies in metal crystals, has been derived from the partial mole free energy of vacancies, based on a model of an atom-vacancy binary solution. For a pure metal crystal containing the mole concentration of vacancies, Cy and it's value in thermal equilibrium, C0, at temperature T, the chemical potential can be expressed respectively as:μν(Cν)=RT[1+ln(Cν/C0)] andμν(C0)=RT The second term in μν(Cν) is the chemical potential of the vacancies referred to the standard-state concentration given by J.P. Hirth[1] and first term is the standard-state one presented |
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| Keywords: | metal crystal atom-vacancy binary solution chemical potential |
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