Thermodynamic Studies at Higher Temperatures of the Phase Relationships of Substoichiometric Plutonium and Uranium/Plutonium Oxides

Ole Toft Sørensen

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearch

    Abstract

    Partial molar thermodynamic quantities for oxygen in non-stoichiometric Pu and U/Pu oxides were determined by thermogravimetric measurements in CO/CO2 mixtures in the temperature range 900-1450°C. A detailed analysis of the thermodynamic data obtained, as well as data previously published for these oxides, shows that the substoichiometric phase range in the phase diagram, previously described as a grossly non-stoichiometric single phase, can be divided into several subregions each with a characteristic type of defect. The pattern of subregions found for the mixed oxides is not the same as that found for PuO2-x because of the greater stability of the mixed oxides.
    Original languageEnglish
    Title of host publicationPlutonium 1975 and Other Actinides
    Number of pages978
    Place of PublicationAmsterdam
    PublisherNorth-Holland
    Publication date1976
    Pages123-131
    ISBN (Print)044411050X
    Publication statusPublished - 1976
    EventInternational Conference on Plutonium and Other Actinides - Baden-Baden, 10-13 September
    Duration: 1 Jan 1976 → …
    Conference number: 5

    Conference

    ConferenceInternational Conference on Plutonium and Other Actinides
    Number5
    CityBaden-Baden, 10-13 September
    Period01/01/1976 → …

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