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HomeMaterials Science ForumMaterials Science Forum Vol. 850Thermodynamic Database of the Phase Diagrams in...

Thermodynamic Database of the Phase Diagrams in the Au-RE Binary Systems

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Abstract:

The thermodynamic database has been developed for Au-RE binary systems. Based on the experimental data including thermodynamic properties and phase equilibrium, the thermodynamic assessments of phase diagrams in the Au-RE (RE: Nd, Dy, Yb, Gd, Tb, Sm, Lu) binary systems were carried out by using the CALPHAD (Calculation of Phase Diagrams) method. The Gibbs free energies of the solution phases were described by substitutional solution model, and all of the intermetallic compounds were described by sublattice models. The calculated phase diagrams are congruent with the available experimental data. Combined with the assessed Au-RE (RE: La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) binary systems, the thermodynamic database of Au-RE binary systems has been developed, and some significant information of thermodynamic properties and phase equilibrium could be calculated, which is important for the further development of Sn-Au-RE high-temperature lead-free solders.

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Periodical:

Materials Science Forum (Volume 850)

Pages:

433-438

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.850.433

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Online since:

March 2016

Authors:

Yu Heng Li, Fei Xu, Peng Wu Yang, Jia Lian Li, Lu Jiang Zhou, Shu Liang Wang*, Yuan Hua Lin, Xing Jun Liu

Keywords:

Au-Re Binary Systems, CALPHAD Method, Thermodynamic Database

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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