دورية أكاديمية
Room temperature plasticity of zirconia-yttria-titania ceramics: Experimental indications and structural modelling
| العنوان: | Room temperature plasticity of zirconia-yttria-titania ceramics: Experimental indications and structural modelling |
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| المؤلفون: | Ussui Valter, Lazar Dolores Ribeiro Ricci, de Lima Nelson Batista, Arata Anelyse, Ribeiro Fabio Negreiros, Dalpian Gustavo Martini, Marchi Juliana, Paschoal José Octavio Armani |
| المصدر: | Processing and Application of Ceramics, Vol 16, Iss 4, Pp 367-373 (2022) |
| بيانات النشر: | University of Novi Sad, 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Clay industries. Ceramics. Glass |
| مصطلحات موضوعية: | zirconia, yttria, titania, density functional theory, plasticity, Clay industries. Ceramics. Glass, TP785-869 |
| الوصف: | Yttria-stabilized tetragonal zirconia (Y-TZP) ceramics have excellent mechanical properties. However, such materials cannot undergo plastic deformation at room temperature due to their high hardness and brittleness values, hindering machinability. To overcome these limitations, we propose a zirconia-yttria-titania ceramics, based on zirconia containing 3mol% yttria and up to 15mol% titania. The zirconia-yttria-titania powders were synthesized by co-precipitation method, uniaxially pressed and sintered at 1400°C/5 h. Sample characterizations were carried out by X-ray diffraction, scanning electron microscopy and mechanical properties through Vickers hardness and toughness measurements. Compared to the Y-TZP ceramics, the yttria stabilised tetragonal zirconia ceramics co-doped with 10mol%Ti showed noticeable increase of tetragonality parameter, higher toughness and lower hardness values, indicating plasticity at room temperature. Furthermore, the atomistic simulation by Density Functional Theory methodology suggests the occurrence of spatial arrangement of the atoms, explaining the proposed plasticity. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1820-6131 2406-1034 |
| Relation: | https://doaj.org/toc/1820-6131; https://doaj.org/toc/2406-1034 |
| DOI: | 10.2298/PAC2204367U |
| URL الوصول: | https://doaj.org/article/9a6deefa035b407eab303f86ad08b4b1 |
| رقم الأكسشن: | edsdoj.9a6deefa035b407eab303f86ad08b4b1 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 18206131 24061034 |
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| DOI: | 10.2298/PAC2204367U |