Critical evaluation and thermodynamic optimisation of the Si-RE systems: Part II. Si-RE system (RE = Gd, Tb, Dy, Ho, Er, Tm, Lu and Y). (February 2015)

• Record Type: Journal Article
• Authors: Kim, Junghwan; Jung, In-Ho
• Is Part Of: Journal of chemical thermodynamics. Volume 81(2015:Feb.)
• Page Start: 273
• Page End: 297
• Publication Date: 2015-02
• Subjects: Mg-RE alloy -- (Si-RE) system -- Thermodynamic modelling -- Phase diagrams -- Thermodynamic properties; Thermodynamics -- Periodicals; Thermochemistry -- Periodicals; Thermodynamique -- Périodiques; Thermochimie -- Périodiques; Thermochemistry; Thermodynamics; Periodicals; 541.369
• DOI: 10.1016/j.jct.2014.08.014
• Languages: English
• ISSNs: 0021-9614

Abstract

Highlights: The (Si-RE) (RE = Gd, Tb, Dy, Ho, Er, Tm, Lu and Y) systems have been reviewed. The thermodynamic optimization of the (Si-RE) systems have been performed. Systematic changes and similarities in the (Si-RE) systems were found. The systematic approach resolved inconsistencies in the experimental data. The systematic approach was used to assess the unexplored phase diagrams. Abstract: A critical evaluation and optimisation of all available phase diagrams and thermodynamic data of the (Si-RE) (RE = Gd, Tb, Dy, Ho, Er, Tm, Lu and Y) systems was conducted to obtain reliable thermodynamic functions of all the phases in the system. In the thermodynamic modelling, a systematic analysis involving the similarity and periodicity observed in the lanthanide series was applied to resolve inconsistencies in the experimental data and to estimate the unknown thermodynamic properties and phase equilibria data. In particular, the phase diagrams and thermodynamic properties of (Si-Tm) and (Si-Lu) systems which are rarely investigated can be predicted from this approach. Systematic trends in thermodynamic properties of solid and liquid phases and phase diagram of the entire (Si-RE) systems were summarized.