Thermodynamic analysis on the Np-Zr-H system

B. A. Pudjanto, K. Konashi, M. Kato, T. Terai, M. Yamawaki

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


The thermodynamic data base of the Np-Zr-H ternary system was developed based on the description of its binary constituents, coupling with the calculated enthalpies of formation obtained using the Miedema model and the Griessen-Driessen model. The provisional isothermal sections of the Np-Zr-H phase diagram were calculated using the data base. It was found that the Np-Zr-H ternary system at 972 K includes the liquid phase in the region of low hydrogen to metal ratio. It is pointed out that the composition of the Np-Zr-H hydride should be selected to avoid the hydride fuel melting in designing of a nuclear reactor fuel element.

Original languageEnglish
Pages (from-to)89-93
Number of pages5
JournalJournal of Nuclear Materials
Issue number1-3
Publication statusPublished - 2005 Sept 1
EventProceedings of the 11th International Symposium on Thermodynamics of Nuclear Materials -
Duration: 2004 Sept 62004 Sept 9


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