LOW TEMPERATURE THERMODYNAMIC STUDY OF THE STABLE AND METASTABLE PHASES OF SILVER
来源期刊：Acta Metallurgica Sinica2007年第5期
论文作者：H.J. Peng Y.Z. Nie X.B. Li Y.Q. Xie
Key words：silver; thermodynamic; heat capacity; SGTE (Scientific Group Thermodata Europe);
Abstract: The low temperature thermodynamics of the stable phase of silver was assessed by the polynomial model and Debye model from the experimental data available in the literature. By means of the constrained non-linear least squares curve fitting arithmetic, two sets of parameter values were determined. The expression of the thermodynamic functions cp(T) and G(T)-H (298.15K) at 0-298.15K were presented. Only the low temperature thermodynamics of the metastable phase of silver can be extrapolated by the Debye model. The expression of the thermodynamic functions cp(T) at 0-298.15K was presented.
H.J. Peng1，Y.Z. Nie1，X.B. Li2，Y.Q. Xie1
(1.School of Material Science and Engineering, Central South University, Changsha 410083, China;
2.Research Center of Advanced Materials, Xiangtan University,Xiangtan 411105, China)
Abstract:The low temperature thermodynamics of the stable phase of silver was assessed by the polynomial model and Debye model from the experimental data available in the literature. By means of the constrained non-linear least squares curve fitting arithmetic, two sets of parameter values were determined. The expression of the thermodynamic functions cp(T) and G(T)-H (298.15K) at 0-298.15K were presented. Only the low temperature thermodynamics of the metastable phase of silver can be extrapolated by the Debye model. The expression of the thermodynamic functions cp(T) at 0-298.15K was presented.
Key words:silver; thermodynamic; heat capacity; SGTE (Scientific Group Thermodata Europe);
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