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Thermodynamic modeling of the Nb-B system
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2007 (English)In: Intermetallics (Barking), ISSN 0966-9795, Vol. 15, no 8, 999-1005 p.Article in journal (Refereed) Published
Abstract [en]

In the present work, the Nb-B binary system was thermodynamically optimized. The stable phases in this system are BCC (niobium), Nb3B2, NbB, Nb3B4, Nb5B6, NbB2, B (boron) and liquid L. The borides Nb3B2, NbB, Nb3B4 and Nb5B6 and the B (boron) were modeled as stoichiometric phases and the liquid L, BCC (niobium) and NbB2 as solutions, using the sublattices model, with their excess terms described by the Redlich-Kister polynomials. The Gibbs energy coefficients were optimized based on the experimental values of enthalpy of formation, low temperature specific heat, liquidus temperatures and temperatures of invariant transformations. The calculated Nb-B diagram reproduces well the experimental values from the literature.

Place, publisher, year, edition, pages
2007. Vol. 15, no 8, 999-1005 p.
Keyword [en]
intermetallics, miscellaneous, phase diagrams, thermodynamic and thermochemical properties, phase diagram, prediction, heat-capacity, superconductivity, calorimetry, enthalpies, range, bor
URN: urn:nbn:se:kth:diva-16799DOI: 10.1016/j.intermet.2006.10.054ISI: 000248065300002ScopusID: 2-s2.0-34250208460OAI: diva2:334842
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

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Sundman, Bo
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Computational Thermodynamics
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