کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4910946 1427898 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of the Microstructural Morphology on UO2 Powders
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Effect of the Microstructural Morphology on UO2 Powders
چکیده انگلیسی

Several UO2 powders with different morphologies were synthetized and characterized. Three different morphologies were synthesized thanks to sol gel process (big heap of about 200μm wide consisting of sintered crystallites) on the one hand, and to oxalic precipitations (one square platelet morphology and one hexagonal stick morphology) on the other hand. Significant differences in dissolution kinetics were observed. Therefore, the morphology of the powders was found to be a key parameter that has to be considered in studies of UO2 dissolution kinetics. The second part of the study consists in dissolving in nitric acid in in the same operating conditions three UO2 powders having different crystallites sizes. It was shown that dissolution kinetics is dependent on the morphology but also on the powder stoichiometry.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Procedia Chemistry - Volume 21, 2016, Pages 319-325
نویسندگان
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