Thermodynamic Evaluation of Yttrium  

作　　者：沈化森 张维敬 刘国权 王润 杜镇民 

机构地区：[1] Univ of Science and Technology, Beijing, Beijing, China

出　　处：《Rare Metals》1995年第3期193-202,共10页稀有金属（英文版）

摘　　要：Based on the analysis and evaluation of the thermodynamic information (including heat capacity, enthalpy, entropy, solid transition temperature, melting point, solid transition enthalpy and melting enthalpy, etc.) on all the condensed phases (hcp-, bcc-Y and the liquid Y), a description of the Gibbs energy of various condensed phases of yttrium at 101, 325 Pa has been obtained for the whole temperature range from 100 to 3700 K. The data of different measurable thermodynamic properties of hcp-, bcc-Y and the liquid Y, have been calculated using the above description of the Gibbs energy, which reproduces the experimental data very well from different sources.Based on the analysis and evaluation of the thermodynamic information (including heat capacity, enthalpy, entropy, solid transition temperature, melting point, solid transition enthalpy and melting enthalpy, etc.) on all the condensed phases (hcp-, bcc-Y and the liquid Y), a description of the Gibbs energy of various condensed phases of yttrium at 101, 325 Pa has been obtained for the whole temperature range from 100 to 3700 K. The data of different measurable thermodynamic properties of hcp-, bcc-Y and the liquid Y, have been calculated using the above description of the Gibbs energy, which reproduces the experimental data very well from different sources.

关 键 词：ENTHALPY ENTROPY Gibbs free energy Specific heat Thermodynamic properties 

分 类 号：TG146.452[一般工业技术—材料科学与工程]