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Investigation of CeTi2O6- and CaZrTi2O7-containing glass–ceramic composite materials

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dc.contributor.authorPaknahad, Elham
dc.contributor.authorGrosvenor, Andrew
dc.date.accessioned2018-05-02T16:03:51Z
dc.date.available2018-05-02T16:03:51Z
dc.date.issued2017
dc.description.abstractGlass–ceramic composite materials are being investigated for numerous applications (i.e., textile, energy storage, nuclear waste immobilization applications, etc.) due to the chemical durability and flexibility of these materials. Borosilicate and Fe–Al–borosilicate glass–ceramic composites containing brannerite (CeTi2O6) or zirconolite (CaZrTi2O7) crystallites were synthe- sized at different annealing temperatures. The objective of this study was to understand the interaction of brannerite or zirconolite-type crystallites within the glass matrix and to investigate how the local structure of these composite materials changed with changing synthesis conditions. Powder X-ray diffraction (XRD) and Backscattered electron (BSE) microprobe images have been used to study how the ceramic crystallites dispersed in the glass matrix. X-ray absorption near edge spectros- copy (XANES) spectra were also collected from all glass–ceramic composite materials. Examination of Ti K-, Ce L3-, Zr K-, Si L2,3-, Fe K-, and Al L2,3-edge XANES spectra from the glass–ceramic composites have shown that the annealing temperature, glass composition, and the loading of the ceramic crystallites in the glass matrix can affect the local environment of the glass–ceramic composite materials. A comparison of the glass–ceramic composites containing brannerite or zirconolite crystallites has shown that similar changes in the long range and local structure of these composite materials occur when the synthesis conditions to form these materials or the composition are changed.en_US
dc.description.sponsorshipNSERCen_US
dc.identifier.citationCan. J. Chem. 95: 1110–1121 (2017)en_US
dc.identifier.urihttp://hdl.handle.net/10388/8557
dc.language.isoenen_US
dc.publisherNRC Research Pressen_US
dc.subjectglass–ceramic composite materialsen_US
dc.subjectnuclear waste immobilization applicationsen_US
dc.subjectbranneriteen_US
dc.subjectzirconoliteen_US
dc.subjectborosilicate and Fe–Al–borosilicate glassen_US
dc.titleInvestigation of CeTi2O6- and CaZrTi2O7-containing glass–ceramic composite materialsen_US
dc.typeArticleen_US

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