Calculation of the Liquidus and Solidus in the Plutonium-Uranium-Zirconium System
- Ecole Polytechnique, Montreal, QC (Canada)
A computer-coupled thermodynamic/phase diagram analysis of the Pu-U-Zr system has been performed in order 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 therefrom. Error limits on the binary and ternary solidus and liquidus curves have been estimated. Expressions for the activity coefficients of all 3 components as functions of composition and temperature in both solid and liquid ternary solutions have also been computed. Isothermal sections of the ternary diagram are presented at 700, 800, 900, 1000, 1050, 1100, 1150, 1200, 1250, 1300, 1400, 1500, 1600, and 1700°C. Other sections can easily be generated if the need should arise. All calculations were performed with programs of the F*A*C*T (Facility for the Analysis of Chemical Thermodynamics) computer system based on Montreal.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Nuclear Energy (NE)
- DOE Contract Number:
- AC02-06CH11357; W-31109-ENG-38
- OSTI ID:
- 2345898
- Report Number(s):
- ANL-IFR--12; 188111
- Country of Publication:
- United States
- Language:
- English
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