Abstract
The thermodynamic description of the Pu–Zn and La–Pu systems were obtained using the CALPHAD (Calculation of Phase Diagrams) method on the basis of experimental information for phase equilibria and thermodynamic properties. The Gibbs free energies of the liquid, (εPu), (δ′Pu), (δPu), (γLa) and (βLa) phases were described by the subregular solution model. Seven intermetallic compounds (PuZn2, Pu13Zn58, Pu3Zn22, Pu2Zn17, κ, κ′, and λ) were modeled by the sublattice model. A reasonable agreement between the present calculated results and experimental data has been achieved with a set of optimized parameters.
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