Thermodynamic calculation of the phase diagram of the Co–Nb–Ta system
-
K. C. Hari Kumar
,
T. Van Rompaey
Abstract
A thermodynamic description of the ternary system Co–Nb–Ta is obtained by combining the descriptions of the lower-order systems according to the CALPHAD method. The thermodynamic data set for the binary Co–Nb system is taken from [1], where a new thermodynamic model for the μ-phase was introduced. The μ-phase appears in several transition metal systems, including Co–Ta. The model is applied to the Co–Ta system and extended to the ternary Co–Nb–Ta system. The thermodynamic descriptions of the systems Co–Ta, Nb–Ta and Co–Nb–Ta are reported in the present work.
The authors wish to express their gratitude to Professor I. Ansara† for the valuable guidance during the initial stages of this work.
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© 2002 Carl Hanser Verlag, München
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Articles in the same Issue
- Frontmatter
- Aufsätze/Articles
- Dilatometric study of the effect of soluble boron on the continuous and isothermal austenite decomposition in 0.15C–1.6Mn steel
- Use of duplex microstructures in steel for estimation of plastic deformation in high-speed machining chips
- Stability of strengthened niobium alloys in long-term high-temperature loading conditions
- Effect of rare-earth metals on the hot strength of HSLA steels
- Wear behaviour of Ni–Cr–Mo–V steel under dry sliding
- Thermodynamic calculation of the phase diagram of the Co–Nb–Ta system
- Peritectic equilibrium in Fe-Co alloys
- A thermodynamic description of the B–Co system: modeling and experiment
- Thermodynamic interpretation of thermoelectric phenomena
- Unit cell volumes of the silicon- and germanium-containing solid solutions based on the 3d bcc transition metals
- Artificial silicide barrier coatings in titanium matrix composites
- Notifications/Mitteilungen
- Personal/Personelles
- DGM Training/DGM Fortbildung
- Conferences/Konferenzen
