Emanation thermal analysis study of brannerite ceramics for immobilization of hazardous wasteстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Авторы:
Balek V.,
Zhang Y.,
Zelenák V.,
Ŝubrt J. ,
Beckman I.N.
Журнал:
Journal of Thermal Analysis and Calorimetry
Том:
92
Номер:
1
Год издания:
2008
Издательство:
Akademiai Kiado
Местоположение издательства:
Hungary
Первая страница:
155
Последняя страница:
160
DOI:
10.1007/s10973-007-8754-8
Аннотация:
Brannerite based ceramics, designed as a matrix for immobilization of high level radioactive waste (HLW), was investigated from the viewpoint of microstructure changes and atomic transport properties caused by leaching of the ceramics at pH 2 and 11, respectively. Scanning electron microscopy (SEM) and emanation thermal analysis (ETA) techniques were used for this purpose. Surface morphology, microstructure changes and transport properties of both ’as-leached’ and ’as-prepared’ samples were compared and the effect of leaching on the thermal behavior of the ceramics samples heated in the temperature range from 20 to 1250°C was characterized. The mobility of radon in the brannerite ceramics was evaluated by mathematical modeling from ETA results. The thermal behavior of the non-leached brannerite ceramics sample and its natural analogue brannerite mineral was compared using the ETA. © 2008 Springer Science+Business Media, LLC.
Добавил в систему:
Бекман Игорь Николаевич