دورية أكاديمية
Defects in the grain interiors of 3 mol% yttria-stabilized tetragonal zirconia polycrystal ceramics with 0.25 wt% alumina
| العنوان: | Defects in the grain interiors of 3 mol% yttria-stabilized tetragonal zirconia polycrystal ceramics with 0.25 wt% alumina |
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| المؤلفون: | Yan Xiong, Lian Luo, Yao Cheng, Zhi Liu, Qi Liu, Weimin Wang, Wei Ji |
| المصدر: | Journal of Advanced Ceramics, Vol 13, Iss 4, Pp 469-477 (2024) |
| بيانات النشر: | Tsinghua University Press, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Clay industries. Ceramics. Glass |
| مصطلحات موضوعية: | 3 mol% yttria-stabilized tetragonal zirconia polycrystal (3y-tzp) ceramics, alumina addition, microstructure, defect, Clay industries. Ceramics. Glass, TP785-869 |
| الوصف: | The presence of high-density defects is rarely observed in bulk 3 mol% yttria-stabilized tetragonal zirconia polycrystal (3Y-TZP) ceramics obtained through conventional pressureless sintering. In the present work, fine-grained dense 147 nm 3Y-TZP ceramics were prepared by pressureless sintering of commercial 0.25 wt% alumina-doped zirconia powders at 1300 ℃. A novel discovery was reported in which large amounts of defects were present in the grain interiors of the sample. The phenomenon was further examined using three types of powder samples, and the reasons for defect formation were investigated by microstructural characterization using high-resolution transmission electron microscopy (HRTEM) analysis and Rietveld refinement. The results confirmed the essential dependence of the defect formation on the alumina addition. The authors attributed the defect formation to the significant difference in ionic radii of the solvent and solute during the dissolution of alumina into the zirconia lattice. The sintering kinetics were proposed to be enhanced by the presence of substantial defects, which consequently favored the low-temperature sintering of the alumina-doped zirconia ceramics. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2226-4108 2227-8508 |
| Relation: | https://www.sciopen.com/article/10.26599/JAC.2024.9220869; https://doaj.org/toc/2226-4108; https://doaj.org/toc/2227-8508 |
| DOI: | 10.26599/JAC.2024.9220869 |
| URL الوصول: | https://doaj.org/article/973a106bbe494376bba8af1f697f7e9d |
| رقم الأكسشن: | edsdoj.973a106bbe494376bba8af1f697f7e9d |
| قاعدة البيانات: | Directory of Open Access Journals |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 22264108 22278508 |
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| DOI: | 10.26599/JAC.2024.9220869 |