Critical evaluation and thermodynamic modeling of the Pd–Sn system

Cui, Senlin; Napolitano, Ralph; Wang, Jian; You, Zhimin; Napolitano, Ralph

Critical evaluation and thermodynamic modeling of the Pd–Sn system

File

IS_J_10323.pdf (1.14 MB)

Date

2020-09-23

Authors

Cui, Senlin

Napolitano, Ralph

Wang, Jian

You, Zhimin

Napolitano, Ralph

Authors

Person

Napolitano, Ralph

Professor

Organizational Units

Organizational Unit

Ames National Laboratory

Ames National Laboratory is a government-owned, contractor-operated national laboratory of the U.S. Department of Energy (DOE), operated by and located on the campus of Iowa State University in Ames, Iowa.

For more than 70 years, the Ames National Laboratory has successfully partnered with Iowa State University, and is unique among the 17 DOE laboratories in that it is physically located on the campus of a major research university. Many of the scientists and administrators at the Laboratory also hold faculty positions at the University and the Laboratory has access to both undergraduate and graduate student talent.

Organizational Unit

Materials Science and Engineering

Materials engineers create new materials and improve existing materials. Everything is limited by the materials that are used to produce it. Materials engineers understand the relationship between the properties of a material and its internal structure — from the macro level down to the atomic level. The better the materials, the better the end result — it’s as simple as that.

Department

Ames National LaboratoryMaterials Science and Engineering

Abstract

The single crystalline material PdSn4, a homologue of the Dirac nodal arc semimetal PtSn4, is a promising candidate to search for new topological states with fascinating quantum physical properties. In the present work, the thermochemistry and phase diagram information of the Pd–Sn system published in the literature was collected and critically reviewed, two thermodynamic reassessments of the Pd–Sn system were carried out in the frame of the CALPHAD approach to optimize the Gibbs free energy of each phase presented in the system. The liquid phase was described using respectively the Bragg-Williams random mixing model and the associate solution model. All the reliable thermodynamic property and phase equilibria data can be generally described using the presently obtained thermodynamic descriptions of the Pd–Sn system. Issues related to the further improvement of the thermodynamic descriptions of the Pd–Sn system are discussed.