Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/68565
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dc.contributor.authorLiao, CZen_US
dc.contributor.authorLiu, CSen_US
dc.contributor.authorLee, PHen_US
dc.contributor.authorStennett, MCen_US
dc.contributor.authorHyatt, NCen_US
dc.contributor.authorShih, KMen_US
dc.date.accessioned2017-08-29T01:34:21Z-
dc.date.available2017-08-29T01:34:21Z-
dc.date.issued2017-
dc.identifier.citationCrystal growth and design, 2017, v. 17, no. 3, p. 1079-1087en_US
dc.identifier.issn1528-7483en_US
dc.identifier.urihttp://hdl.handle.net/10397/68565-
dc.description.abstractGlass-ceramics, with a specific crystalline phase assembly, can combine the advantages of glass and ceramic and avoid their disadvantages. In this study, both cubic-zirconia and zirconolite-based glass-ceramics were obtained by the crystallization of SiO2-CaO-Al2O3-TiO2-ZrO2-Nd2O3-Na2O glass. Results show that all samples underwent a phase transformation from cubic-zirconia to zirconolite when crystallized at 900, 950, and 1000 degrees C. The size of the cubic-zirconia crystal could be controlled by temperature and dwelling time. Both cubiczirconia and zirconolite crystals/particles show dendrite shapes, but with different dendrite branching. The dendrite cubic-zirconia showed highly oriented growth. Scanning electron microscopy images show that the branches of the cubic-zirconia crystal had a snowflake-like appearance, while those in zirconolite were composed of many individual crystals. Rietveld quantitative analysis revealed that the maximum amount of zirconolite was similar to 19 wt %. A two-stage crystallization method was used to obtain different microstructures of zirconolite-based glass-ceramic. The amount of zirconolite remained approximately 19 wt %, but the individual crystals were smaller and more homogeneously dispersed in the dendrite structure than those obtained from one-stage crystallization. This process-control feature can result in different sizes and morphologies of cubic-zirconia and zirconolite crystals to facilitate the design of glass-ceramic waste forms for nuclear wastes.en_US
dc.description.sponsorshipDepartment of Civil and Environmental Engineeringen_US
dc.language.isoenen_US
dc.publisherAmerican Chemical Societyen_US
dc.relation.ispartofCrystal growth and designen_US
dc.titleCombined quantitative x-ray diffraction, scanning electron microscopy, and transmission electron microscopy investigations of crystal evolution in CaO-Al2O3-SiO2-TiO2-ZrO2-Nd2O3-Na2O systemen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage1079en_US
dc.identifier.epage1087en_US
dc.identifier.volume17en_US
dc.identifier.issue3en_US
dc.identifier.doi10.1021/acs.cgd.6b01458en_US
dc.identifier.isiWOS:000395493900019-
dc.source.typeArticleen
dc.identifier.eissn1528-7505en_US
item.fulltextFull Text (via PolyU elinks)-
crisitem.author.deptDepartment of Civil and Environmental Engineering-
crisitem.author.facultyFaculty of Construction and Environment-
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