Zirconolite Polytypes and Murataite Polysomes in Matrices for the REE—Actinide Fraction of HLW

Electron backscatter diffraction (EBSD) has been used for more than 30 years for analyzing the structure of minerals and artificial substances. In recent times, EBSD has been widely applied for investigation of irradiated nuclear fuel and matrices for the immobilization of radioactive waste. The com...

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Veröffentlicht in:	Materials 2022-09, Vol.15 (17), p.6091
Hauptverfasser:	Yudintsev, Sergey V., Nickolsky, Maximilian S., Ojovan, Michael I., Stefanovsky, Olga I., Nikonov, Boris S., Ulanova, Amina S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Analysis Capital costs Electron backscatter diffraction Geology Groundwater High level radioactive wastes Minerals Nuclear energy Nuclear fuel cycle Nuclear fuels Nuclear industry Polytypes Radiation Radioactive pollution Radioactive wastes Radioisotopes Reactors Review Scanning electron microscopy Uranium
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Beschreibung
Zusammenfassung:	Electron backscatter diffraction (EBSD) has been used for more than 30 years for analyzing the structure of minerals and artificial substances. In recent times, EBSD has been widely applied for investigation of irradiated nuclear fuel and matrices for the immobilization of radioactive waste. The combination of EBSD and scanning electron microscopy (SEM/EDS) methods allows researchers to obtain simultaneously data on a specimen’s local composition and structure. The article discusses the abilities of SEM/EDS and EBSD techniques to identify zirconolite polytype modifications and members of the polysomatic murataite–pyrochlore series in polyphase ceramic matrices, with simulations of Pu (Th) and the REE-actinide fraction (Nd) of high-level radioactive waste.
ISSN:	1996-1944 1996-1944
DOI:	10.3390/ma15176091