Effect of ZnO on the crystallization, microstructure, and properties of glass-ceramics in the SiO2-Li2O-ZnO-K2O-P2O5 system
dc.bibliographicCitation.firstPage | 223 | |
dc.bibliographicCitation.journalTitle | Glass Science and Technology | eng |
dc.bibliographicCitation.lastPage | 229 | |
dc.bibliographicCitation.volume | 74 | |
dc.contributor.author | Clausbruch, Sascha Cramer von | |
dc.contributor.author | Schweiger, Marcel | |
dc.contributor.author | Höland, Wolfram | |
dc.contributor.author | Rheinberger, Volker | |
dc.date.accessioned | 2024-01-05T15:17:06Z | |
dc.date.available | 2024-01-05T15:17:06Z | |
dc.date.issued | 2001 | |
dc.description.abstract | Six glasses in the SiO2-Li2O-ZnO-K2O-P2O5 system were prepared. Starting from a dental glass-ceramic model composition the ZnO content was varied from 0.0 to 8.3 mol% with the molar ratios of the other components being invariant. Crystallization processes of these glasses were investigated using high-temperature X-ray diffraction and differential scanning calorimetry. Crystal phases occurred in the temperature range of 500 to 1050 °C, while the main precipitated phase was lithium disilicate (Li2Si2O5). Lithium metasilicate, lithium orthophosphate, and cristobalite were secondary phases. Morphology and microstructure of the glass-ceramics were studied using scanning electron microscopy. Li2Si2O5 crystals in glass-ceramics had elongated shapes along the c-axis, crystal lengths ranging from 1 to 5 µm and aspect rados between 2 and 5. The lath-shaped Li2Si2O5 crystals were randomly oriented in the volume of the glass-ceramics and were responsible for the good mechanical properties. With increasing ZnO content a decrease of flexural strengths from 520 to 450 MPa was observed. It was concluded that the ZnO variation mainly influenced the translucency of the glass-ceramics. Relating to dental standard contrast ratios between 0.23 and 0.74, method limits of 0 and 1 provided, were determined. | |
dc.description.version | publishedVersion | |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/14032 | |
dc.identifier.uri | https://doi.org/10.34657/13062 | |
dc.language.iso | eng | |
dc.publisher | Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft | |
dc.relation.issn | 0946-7475 | |
dc.rights.license | CC BY 3.0 DE | |
dc.rights.uri | https://creativecommons.org/licenses/by/3.0/de/ | |
dc.subject.ddc | 660 | |
dc.title | Effect of ZnO on the crystallization, microstructure, and properties of glass-ceramics in the SiO2-Li2O-ZnO-K2O-P2O5 system | |
dc.type | Article | eng |
dc.type | Text | eng |
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