The MEPHISTA-15 database by IRSN (TDmephista)

General Description

MEPHISTA (“Multiphase Equilibria in Fuels via Standard Thermodynamic Analysis”) is a self-consistent database specially developed for new generation nuclear fuels by Institut de Radioprotection et de Sûreté Nucléaire (IRSN) in France.

MEPHISTA is consistent with the NUCLEA databases. 14+2 chemical elements are included in the database:

Ba–C–Ce-Cs–Fe-La-Mo-O-Pu-Ru-Si-Sr-U-Zr (+Ar-H).

This database covers the entire field from metal to oxide domains, and the temperature range up to 3500 K. 93 binary, 50 ternary, 2 quaternary systems, 46 solution phases, 236 condensed stoichiometric compounds, and 157 gaseous species are included in the database.

Assessed Systems

Binary Systems

Ba-C           Ba-Ce        Ba-Cs         Ba-Fe         Ba-La         Ba-Mo       Ba-O
Ba-Pu        Ba-Ru        Ba-Si          Ba-Sr          Ba-U          Ba-Zr         C-Ce
C-Cs           C-Fe           C-La           C-Mo         C-O            C-Pu          C-Ru
C-Si            C-Sr           C-U            C-Zr           Ce-Cs         Ce-Fe         Ce-La
Ce-Mo       Ce-O          Ce-Pu        Ce-Ru        Ce-Si          Ce-Sr          Ce-U
Ce-Zr         Cs-Fe         Cs-La         Cs-Mo       Cs-O          Cs-Pu        Cs-Ru
Cs-Si          Cs-Sr          Cs-U          Cs-Zr         Fe-La         Fe-Mo        Fe-O
Fe-Pu         Fe-Ru        Fe-Si          Fe-Sr          Fe-U           Fe-Zr         La-Mo
La-O          La-Pu        La-Ru        La-Si          La-Sr          La-U          La-Zr
Mo-O         Mo-Pu       Mo-Ru       Mo-Si        Mo-Sr        Mo-U         Mo-Zr
O-Pu          O-Ru         O-Si           O-Sr           O-U            O-Zr          Pu-Ru
Pu-Si          Pu-Sr         Pu-U          Pu-Zr        Ru-Si         Ru-Sr         Ru-U
Ru-Zr        Si-Sr           Si-U            Si-Zr          Sr-U           Sr-Zr          U-Zr

Pseudobinary Systems

Ba-Ce-O                       BaO – CeO₂
                   Ba-Fe-O                       BaO – FeO                                      Ba-O – Fe₂O₃
                   Ba-La-O                       BaO – La₂O₃

                   Ba-Mo-O                      BaO – MoO₃
                   Ba-O-Si                        BaO – SiO₂
                   Ba-O-Sr                        BaO – SrO
                   Ba-O-U                         BaO – UO₂
                   Ba-O-Zr                       BaO – ZrO₂
                   Ba-O-Pu                       BaO – PuO₂
                   Ce-O-La                       CeO₂ – La₂O₃
Ce-O-Mo                     CeO₂ – MoO₃              Ce₂O₃ - MoO₃
                   Ce-O-Pu                      CeO₂ – PuO₂               Ce₂O₃ – PuO₂
                   Ce-O-Si                        CeO₂ – SiO₂

Ce-O-Sr                        CeO₂ – SrO
                   Ce-O-U                        CeO₂ – UO₂                 Ce₂O₃ – UO₂
                   Ce-O-Zr                       CeO₂ – ZrO₂                Ce₂O₃ – ZrO₂
                   Cs-Mo-O                      Cs₂MoO₄ – MoO₃
                   Fe-La-O                       FeO – La₂O₃                Fe₂O₃ - La₂O₃
Fe-O-Sr                        FeO – SrO                    Fe₂O₃ - SrO
                   La-O-Pu                       La₂O₃ – PuO₂
                   La-O-Si                        La₂O₃ – SiO₂
                   La-O-Sr                        La₂O₃ – SrO
                   La-O-U                         La₂O₃ – UO₂
                   La-O-Zr                       La₂O₃ – ZrO₂
                   Mo-O-Pu                     MoO₃ – PuO₂
                   Mo-O-Zr                      MoO₃ – ZrO₂
                   O-Pu-Si                        SiO₂ – PuO₂
                   O-Pu-Sr                        SiO₂ – SrO
                   O-Pu-U                        PuO₂ – UO₂
                   O-Pu-Zr                       PuO₂ – ZrO₂
                   O-Si-Sr                         SrO – SiO₂
                   O-Si-U                          SiO₂ – UO₂
                   O-Si-Zr                         SiO₂ – ZrO₂
                   O-Sr-U                          SrO – UO₂

Ternary Systems

C-Fe-Mo             C-O-U                 C-O-Zr                C-O-Pu               C-U-Zr
C-U-Pu               Ce-Fe-O              Ce-O-Cs             Fe-O-Pu              Fe-O-U
Fe-O-Zr              Fe-Pu-U              Fe-Pu-Zr            Fe-U-Zr               O-Pu-U
O-Pu-Zr             O-U-Zr                Pu-U-Zr

Ternary Subsystems

                   Fe-O-Si                         FeO – Fe₂O₃ – SiO₂

Pseudoternary Subsystems

O-Si-U-Zr                    SiO₂ – UO₂ – ZrO₂

Ba-Cs-Mo-O                BaMoO₄ – Cs₂MoO_4t