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Licensed Unlicensed Requires Authentication Published by De Gruyter December 30, 2021

Thermodynamic Modeling of the Co–Dy System

Xuping Su, Weijing Zhang and Zhenmin Du


The phase diagram and thermodynamic data of the Co–Dy system were critically assessed by means of the computer programs THERMO-CALC. The Co5Dy and Co17Dy2 compounds are treated as one phase denoted δ, and a three-sublattice model Co15(Co2, Dy)(Co2, Dy)2 based on the crystal structure is used to model the δ phase. The other phases are modeled with the Redlich-Kister formula [liquid, fcc, bcc, hcp] or as stoichiometric compounds [Co7Dy2, Co3Dy, Co2Dy, Co7Dy12, CoDy3]. Good agreement is obtained between the calculation and experimental results.

X. Su, W. Zhang,[1)] Z. Du Department of Materials Science and Engineering University of Science and Technology, Beijing Beijing 100083 P. R. China

  1. The authors would like to express their gratitude to Royal Institute of Technology, Sweden for supplying the THERMO-CALC software. This study was supported by the National Natural Science Foundation of China.


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Received: 1997-09-23
Published Online: 2021-12-30

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