| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1559040 | Calphad | 2011 | 6 Pages |
The thermodynamic properties of the Pd–Ti system were optimized using the CALPHAD (CALculation of PHAse Diagram) technique. The solution phases, liquid, bcc, fcc and hcp, were described by the substitutional-solution model. Both compounds Pd2Ti and PdTi2 with tetragonal MoSi2-type structure were treated as one phase with the formula (Pd,Ti)2(Pd,Ti) by a two-sublattice model. The intermetallic compounds Pd3Ti, Pd3Ti2, and PdTi3 were treated as stoichiometric compounds. The intermetallic compound αPdTi, which had a homogeneity range, was treated as the formula (Pd,Ti)(Pd,Ti) by a two-sublattice model. A two-sublattice model (Pd,Ti)0.5(Pd,Ti)0.5 was applied to describe the compound βPdTi in order to cope with the order–disorder transition between βPdTi with CsCl-type structure (B2) and body-centered cubic solution (A2) in the Pd–Ti system. A set of self-consistent thermodynamic parameters was obtained.
► The Pd–Ti system was optimized using the CALPHAD technique. ► The order–disorder transition between βPdTi(B2) and bcc (A2) is described. ► A set of self-consistent thermodynamic parameters of the Pd–Ti system was obtained.
