| Low temperature thermodynamic study of the stable and metastable phases of vanadium |
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| 作者姓名： | LI XiaoBo XIE YouQing NIE YaoZhuang PENG HongJian |
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| 作者单位： | College of Materials Science and Engineering, Central South University, Changsha 410083, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China （Grant No. 50471058）, the Provincial Science Foundation of Hunan （Grant No. 06FJ3015） and the Research Foundation of Education Bureau of Hunan Province （Grant No. 75KZ） |
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| 摘 要： | The low temperature thermodynamics of the stable phase of vanadium has been assessed by the polynomial and Debye models from the experimental data available in literature. By means of the con-strained nonlinear least squares curve fitting arithmetic,two sets of parameter values have been de-termined. Expressions of the thermodynamic functions Cp(T) and G(T)-H(298.15 K) at 0―298.15 K are presented. The low temperature thermodynamics of the metastable phase of vanadium can only be extrapolated by the Debye model. The expression of the thermodynamic function Cp(T) at 0―298.15 K is presented.
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| 关 键 词： | 温度 热力学 钒 稳定状态 |
| 收稿时间： | 19 June 2007 |
| 修稿时间： | 2007-06-19 |
Low temperature thermodynamic study of the stable and metastable phases of vanadium |
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| LI XiaoBo XIE YouQing NIE YaoZhuang PENG HongJian.Low temperature thermodynamic study of the stable and metastable phases of vanadium[J].Chinese Science Bulletin,2007,52(22):3041-3046. |
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| Authors: | Li XiaoBo Xie YouQing Nie YaoZhuang Peng HongJian |
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| Institution: | (1) College of Materials Science and Engineering, Central South University, Changsha, 410083, China |
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| Abstract: | The low temperature thermodynamics of the stable phase of vanadium has been assessed by the polynomial and Debye models from
the experimental data available in literature. By means of the constrained nonlinear least squares curve fitting arithmetic,
two sets of parameter values have been determined. Expressions of the thermodynamic functions C
p(T) and G(T)-H (298.15 K) at 0–298.15 K are presented. The low temperature thermodynamics of the metastable phase of vanadium can only be
extrapolated by the Debye model. The expression of the thermodynamic function C
p(T) at 0–298.15 K is presented.
Supported by the National Natural Science Foundation of China (Grant No. 50471058), the Provincial Science Foundation of Hunan
(Grant No. 06FJ3015) and the Research Foundation of Education Bureau of Hunan Province (Grant No. 75KZ) |
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| Keywords: | vanadium heat capacity thermodynamics SGTE |
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