Calculation of the liquidus and solidus in the plutonium-uranium-zirconium system
A computer-coupled thermodynamic/phase diagram analysis of the Pu-U-Zr system has been performed to calculate the ternary solidus and liquidus surfaces. Available data on the three binary systems, Pu-U, U-Zr, and Zr-Pu have been collected and critically evaluated. Mathematical expressions for the thermodynamic properties of the binary phases have been obtained from this analysis. Ternary thermodynamic properties have been estimated from these binary properties, and the ternary phase diagram has been calculated there from. Error limits on the binary and ternary solidus and liquidus curves have been estimated. Expressions for the activity coefficients of all three components as functions of compositions and temperature in both solid and liquid ternary solutions have also been computed. All calculations were performed with programs of the F*A*C*T (Facility for the Analysis of Chemical Thermodynamics) computer system based in Montreal. 32 refs., 4 figs., 2 tabs.
- Research Organization:
- Ecole Polytechnique, Montreal, PQ (Canada); Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 714489
- Report Number(s):
- ANL-IFR--93; ON: TI88014383
- Country of Publication:
- United States
- Language:
- English
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