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Reassessing the melting temperature of PuO2 / Franck de Bruycker in Materials today, Vol. 13 N° 11 (Novembre 2010) 

Public ISBD [article]  in Materials today > Vol. 13 N° 11 (Novembre 2010) . - pp. 52-55 Titre : Reassessing the melting temperature of PuO2 Type de document : texte imprimé Auteurs : Franck de Bruycker, Auteur ; Konstantinos Boboridis, Auteur ; Dario Manara, Auteur Année de publication : 2011 Article en page(s) : pp. 52-55 Note générale : Ingénierie Langues : Anglais (eng) Mots-clés : Melting  temperature  Nuclear  power  plants  Thermo-mechanical  stability  Nuclear  fuel  element Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : The melting behavior is a fundamental property of a material, closely related to its structure and thermodynamic stability, and has therefore been a crucial subject of research for ages. The melting point is also an important engineering parameter, as it defines the operational limits of a material in its application environment. This point becomes critical in nuclear engineering where the thermo-mechanical stability of a nuclear fuel element is a key factor determining fuel performance and safety. However, experimental difficulties stemming from the extreme temperatures, complex pressure-temperature-composition relations, and the high radioactivity make the study of melting of refractory actinide compounds particularly challenging. As a consequence, experimental data are rare and subject to large uncertainties, and more reliable experimental techniques are badly needed. A novel experimental approach is presented here, yielding new data and allowing a re-assessment of the PuO2 melting behaviour. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110702042 [article] Reassessing the melting temperature of PuO2 [texte imprimé] / Franck de Bruycker, Auteur ; Konstantinos Boboridis, Auteur ; Dario Manara, Auteur . - 2011 . - pp. 52-55. Ingénierie Langues : Anglais (eng) in Materials today > Vol. 13 N° 11 (Novembre 2010) . - pp. 52-55 Mots-clés : Melting  temperature  Nuclear  power  plants  Thermo-mechanical  stability  Nuclear  fuel  element Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : The melting behavior is a fundamental property of a material, closely related to its structure and thermodynamic stability, and has therefore been a crucial subject of research for ages. The melting point is also an important engineering parameter, as it defines the operational limits of a material in its application environment. This point becomes critical in nuclear engineering where the thermo-mechanical stability of a nuclear fuel element is a key factor determining fuel performance and safety. However, experimental difficulties stemming from the extreme temperatures, complex pressure-temperature-composition relations, and the high radioactivity make the study of melting of refractory actinide compounds particularly challenging. As a consequence, experimental data are rare and subject to large uncertainties, and more reliable experimental techniques are badly needed. A novel experimental approach is presented here, yielding new data and allowing a re-assessment of the PuO2 melting behaviour. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110702042