| 液态金属凝固与形核热力学中有关公式的校正 |
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| 引用本文： | 蔡安辉,安伟科,陈敏,李小松,谭晶莹,周勇,罗云. 液态金属凝固与形核热力学中有关公式的校正[J]. 湖南文理学院学报(自然科学版), 2007, 19(4): 67-68 |
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| 作者姓名： | 蔡安辉 安伟科 陈敏 李小松 谭晶莹 周勇 罗云 |
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| 作者单位： | 湖南理工学院,机电系,湖南,岳阳,414000;湖南理工学院,物电系,湖南,岳阳,414000 |
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| 基金项目： | 国家自然科学基金(50774034)，湖南省自然科学基金(06JJ20005)，湖南省教育厅科研项目(06B038,05A055)，湖南省教育科学“十一五”规划课题(XJK06CGD070)，湖南理工学院教研教改项目(2007B06) |
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| 摘 要： | 分析了教材中关于液态金属凝固热力学条件和形核热力学中的公式推导过程,发现教材中存在参数的量纲前后不一致而得出错误结果的现象;通过统一量纲,获得了均质形核的正确临界晶核半径计算式,并通过实例对其正确性进行了检验.结果表明,所获得的临界晶核半径计算式正确.
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| 关 键 词： | 液态金属 凝固热力学 形核热力学 |
| 文章编号： | 1672-6146(2007)04-0067-02 |
| 修稿时间： | 2007-09-29 |
Correction of Relative Formulate on Consolidation and Nucleation Thermodynamics for Liquid Metals |
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| CAI An-hui,AN Wei-ke,CHEN Min,LI Xiao-song,TAN Jing-ying,ZHOU Yong,LUO Yun. Correction of Relative Formulate on Consolidation and Nucleation Thermodynamics for Liquid Metals[J]. Journal of Hunan University of Arts and Science:Natural Science Edition, 2007, 19(4): 67-68 |
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| Authors: | CAI An-hui AN Wei-ke CHEN Min LI Xiao-song TAN Jing-ying ZHOU Yong LUO Yun |
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| Abstract: | One of the important problems for materials science is the thermodynamics of solidification and nucleation. The derivation procedure of the formulae relating to consolidation and nucleation thermodynamics for liquid metals in some teaching materials was analyzed in this paper. It is found that there is dimensional heterogeneity of some parameters, resulting in the wrong results. By unifying the dimension of parameters, the corrective relationship of the critical diameter of crystal nucleus for homogeneous nucleation is obtained. And its validation is examined by practical example. The results show that the corrective relationship of the critical diameter of crystal nucleus for homogeneous nucleation is reliable. |
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| Keywords: | Liquid metal consolidation thermodynamics nucleation thermodynamics |
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