Thermodynamic assessment of the Bi-Rb binary system
The thermodynamic assessment of the Bi-Rb system was carried out by using the CALculation of PHAse Diagrams (CALPHAD) method on the basis of experimental thermodynamic data and phase equilibrium measurements.Considering the short range ordering behavior of the liquid phase,the associate model was used with the constituent species Bi,BiRb,BiRb3 and Rb.All the intermetallic compounds,Bi2Rb,Bi2Rb3,Bi4Rbs,α-BiRb3 and β-BiRb3,with no experimentally determined solubility ranges were treated as stoichiometric compounds.The solution phases,the Bi-rich terminal phase Rhombohedral_A7 and the Rb-rich terminal phase BCC_A2,were treated as the pure substances since the extremely small solubility of the second alloying element in each of these phases.A set of self-consistent thermodynamic parameters was obtained for the Bi-Rb system and the CALPHAD results can reproduce the experimental thermochemical properties and the measured phase equilibrium relations well.
The Bi-Rb binary system Thermodynamic assessment Gibbs energy expression
刘妙 李长荣 杜振民 郭翠萍 牛春菊
北京科技大学材料科学与工程学院
国内会议
常州
英文
319-322
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）