Abstract
The samples of U-bearing ceramics with a composition (wt%) 5 Al2O3, 10 CaO, 55 TiO2, 10 MnO, 5 Fe2O3, 5 ZrO2, 10 UO2 were produced by melting of oxide mixtures in a Pt ampoule, glassy carbon crucibles in a resistive furnace, and cold crucible inductive melting (CCIM). In total 85–95 vol% of the samples produced were composed of murataite polytypes with 5- (5C), 8- (8C), and 3- (3C) fold elementary fluorite unit cell forming respectively core, medium part and rim of the murataite grains. Crichtonite, rutile, and Mn/Fe titanate (pyrophanite/ilmenite) were found to be minor phases. The latter was primarily present in the ceramics produced by melting in glassy carbon crucibles. Cold crucible melted ceramics contained the traces of vitreous phase due to melt contamination with a cold crucible putty material. Average U leach rates from the ceramics measured by SPFT procedure were found to be 10−3 g m−2 d−1 and lower.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
