LOW TEMPERATURE THERMODYNAMIC STUDY OF THE STABLE AND METASTABLE PHASES OF SILVER  

作　　者：X.B. Li Y.Q. Xie Y.Z. Nie H.J. Peng 

机构地区：[1]Research Center of Advanced Materials, Xiangtan University, Xiangtan 411105, China [2]School of Material Science and Engineering, University, Changsha 410083, China Central South

出　　处：《Acta Metallurgica Sinica(English Letters)》2007年第5期355-362,共8页金属学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.50271085);Hunan Provincial Natural Science Foundation of China(No.06FJ3015);Hunan Provincial Research Foundation of Education Bureau of China(No.75KZ).

摘　　要：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.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.

关 键 词：SILVER THERMODYNAMIC heat capacity SGTE （Scientific Group Thermodata Europe） 

分 类 号：TG146.32[一般工业技术—材料科学与工程]