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Thermodynamic Assessment of the Fe-Te System. Part II Thermodynamic modelling

Abstract : A thermodynamic description of the Fe-Te system modeled via the Calphad method is proposed, based on data published in a preceding publication $Part\ I:\ Experimental\ study$, and that available in literature. End-member formation energies for the phases $\beta$; $\beta'$; $\delta$, $\delta'$ and $\epsilon$; as well as lattice stabilities of FCC and BCC tellurium, have been evaluated via DFT and used in the numerical optimization. The final Gibbs energy models fit thermodynamic and phase diagram data well, and inconsistencies are discussed. The thermodynamic description is then used to evaluate Gibbs energy of formation for selected Fe-Te compounds of interest for the modeling of internal corrosion of stainless steel fuel pin cladding during operation of Liquid Metal-cooled Fast Reactors (LMFR).
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C.-M. Arvhult, C. Guéneau, S. Gossé, . Selleby M. Thermodynamic Assessment of the Fe-Te System. Part II Thermodynamic modelling. Journal of Alloys and Compounds, Elsevier, 2018, 767, pp.883-893. ⟨10.1016/j.jallcom.2018.07.051⟩. ⟨cea-02339843⟩

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