Critical systematic investigation of the Cd–Ce system: phase stability and Gibbs energies of formation and equilibria via thermodynamic description
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Jinming Liu
,
Xiaolong Huang
Abstract
The CALPHAD (CAlculation of PHAse Diagrams) technique is used in the critical remodeling of the Cd–Ce system. On the basis of new experimental data in the literature, the excess Gibbs energies of the solution phase expression (liquid, bcc, fcc, and hcp_A3) are described using the Redlich–Kister equation. Four compounds (Cd3Ce, Cd6Ce, Cd11Ce, and Cd17Ce2) are treated as stochiometric compounds. Two intermetallic compounds (Cd2Ce and Cd58Ce13), which exhibit a little homogeneity range, are treated as a two-sublattice model. Two thermodynamic models are used for the CdCe and bcc. Model I is to model the compound CdCe and bcc-Ce separately. Model II is to use the formula (Cd, Ce)0.5(Cd, Ce)0.5(Va)3 to describe the compound CdCe with a CsCl-type structure (B2) and cope with the disorder–order transition from bcc-A2 to bcc-B2. The present work shows that four eutectic reactions, three peritectic reactions, two eutectoid reactions, one peritectoid transformation and three congruent reactions are observed, and the stoichiometric compound Cd17Ce2 is only stable from 804 to 882 °C in the Cd–Ce system.
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Research ethics: Not applicable.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Competing interests: The authors declare no conflicts of interest regarding this article.
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Research funding: Authors are grateful to the National Natural Science Foundation of China (No. 51961014), and the Science Foundation of Ganzhou City (No. [2018] 50; [2020] 60), and the Innovative Talent Programof Ganzhou City (No. [2019] 60), and Science and Technology Research Project of Jiangxi Provincial Department of Education (No. GJJ191346).
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Data availability: The raw data can be obtained on request from the corresponding author.
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Articles in the same Issue
- Frontmatter
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- News
- DGM – Deutsche Gesellschaft für Materialkunde
Articles in the same Issue
- Frontmatter
- Original Papers
- Nanocrystalline PbS thin film produced by alkaline chemical bath deposition: effect of inhibitor levels and temperature on the physicochemical properties
- Effect of laser power on microstructure and tribological behavior of laser clad NiCr coating
- Mechanical characterization and evaluation of pitting corrosion resistance of a superferritic stainless steel model alloy 25Cr–6Mo–5Ni
- Factors dictating the extent of low elongation in high sulfur-containing bainitic steels
- Effect of process parameters on mechanical properties and wettability of polylactic acid by fused filament fabrication process
- Critical systematic investigation of the Cd–Ce system: phase stability and Gibbs energies of formation and equilibria via thermodynamic description
- Experimental study of the phase relations of the Fe–Pt–Ho ternary system at 500 °C
- Ultraviolet-B radiation from Gd (III) doped hardystonite
- Photoluminescence features of trivalent holmium doped Ca2La8(SiO4)6O2 phosphors
- Thermal stability of Al3BC3 powders under a nitrogen atmosphere
- News
- DGM – Deutsche Gesellschaft für Materialkunde
