Critical evaluation and thermodynamic modeling of the Pd–Sn system

Cui, Shuzhen; Wang, Jian; You, Zhimin; Napolitano, Ralph E.

doi:10.1016/j.intermet.2020.106945

Cited by 5 publications

(3 citation statements)

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“…For the Pd 2 Sn phase of the Pd–Sn system, a single-sublattice model (Pd 2 Sn) 1 was used [ 19 ], whereas a two-sublattice model (Pd) 0.667 (In) 0.333 was proposed in [ 13 ] for the InPd 2 phase of the In–Pd system. As these phases actually form continuous solid solution in the ternary, similar models should describe both.…”

Section: Resultsmentioning

confidence: 99%

“…The difference between enthalpies of formation of Pd 3 Sn phases with Cu 3 Au and Al 3 Ti type structures was taken from the ab initio calculation presented in the OQMD [ 32 ]. Gibbs energy function of the virtual Pd:Sn end-member of the τ 1 phase was calculated by adding of this difference to the Gibbs energy function of stable Pd 3 Sn phase [ 19 ] Other parameters of the virtual τ 1 phase in the Pd–Sn binary were obtained from estimated metastable equilibria with its participation.…”

Section: Resultsmentioning

confidence: 99%

“…The description of the In–Sn system requires revision. The most complete thermodynamic description of the Pd–Sn system, taking into account the latest studies of phase equilibria in the system, was proposed in [ 19 ]. Two models for the liquid phase: the Redlich–Kister polynomial and the associated solution theory were used.…”

Section: Introductionmentioning

confidence: 99%

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Phase Equilibria of the In–Pd–Sn System at 500 °C and 800 °C: Experimental Study and CALPHAD Modeling

et al. 2023

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Phase equilibria in the In–Pd–Sn system were investigated by a combination of key experiments and thermodynamic modeling. Partial isothermal sections at 500 °C and 800 °C of the In–Pd–Sn system for Pd contents above 66 at.% have been plotted experimentally using scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM/EDX) and X-ray diffraction (XRD). The solubility of the third component in binary compounds InPd3 and Pd3Sn was determined. The new ternary compound τ1 was found in Pd contents ranging from 20 to 25 at.% and at Sn contents varying from 5 to approximately 17 at.% Sn. This compound crystallizes in an Al3Ti-type tetragonal structure. Isostructural InPd2 and Pd2Sn phases from the In–Pd and Pd–Sn binary compositions form a continuous phase field in the ternary system at both temperatures. The temperatures of the solidus, liquidus, and phase transitions of the alloys along the Pd–In50Sn50 line were measured using DTA/DSC. Thermodynamic calculation of the In–Pd–Sn ternary system is performed using the CALPHAD method using the Thermo-Calc® software. The thermodynamic properties of the disordered fcc and liquid phases were described by the Redlich–Kister–Muggianu model. To describe intermetallic phases, namely, InPd3, Pd3Sn, τ1 and Pd2(InxSn1−x), a two-sublattice models was used. Thermodynamic description of the In–Pd–Sn system obtained in this study is in good agreement both with our results and the published experimental data

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%