摘要
Differential scanning calorimeter technique combined with the traditional fluxing treatment was used to investigate the specific heat and related thermodynamic properties of under-cooled pure silver melts. The specific heat of the under-cooled melt showed a linear dependence on the temperature in the range of the obtained under-cooling from 0 to 198 K. The related thermodynamic properties of silver, such as the entropy change, the enthalpy change and the Gibbs free energy difference between the under-cooled melt and the solid phase, were derived from the measured specific heat. The relations between the temperature and the thermal diffusion or the thermal conductivity of the under-cooled melt were analyzed respectively.
Differential scanning calorimeter technique combined with the traditional fluxing treatment was used to investigate the specific heat and related thermodynamic properties of under-cooled pure silver melts. The specific heat of the under-cooled melt showed a linear dependence on the temperature in the range of the obtained under-cooling from 0 to 198 K. The related thermodynamic properties of silver, such as the entropy change, the enthalpy change and the Gibbs free energy difference between the under-cooled melt and the solid phase, were derived from the measured specific heat. The relations between the temperature and the thermal diffusion or the thermal conductivity of the under-cooled melt were analyzed respectively.
作者
ZHU YuYing 1 , LI Qiang 1,2,3, WANG Ge 1 , JING Qin 2 , WANG Xu 1 , GAO Ying 3 & GAO JingNa 3 1 Department of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China
2 Key Laboratory of Metastable Materials Science & Technology, Yanshan University, Qinhuangdao 066004, China
3 Department of Materials Science & Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
基金
Supported by the National Natural Science Foundation of China (Grant No.50731005/50821001)
the National Basic Research Program of China (Grant Nos. 2009CB626603 and 2007CB616915)
PCSIRT (Grant No. IRT0650)
the Hebei Technology Department Foundation (Grant No. 08965109D)
