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https://hdl.handle.net/20.500.13091/4367
Title: | Anatomy of flash sintering in yttria-stabilized zirconia solid-state electrolyte: High temporal resolution energy-dispersive X-ray diffraction using a 200 keV synchrotron probe | Authors: | Savkliyildiz, Ilyas Degnah, Ahmed Biçer, Hülya Salur, Emin Tsakalakos, Thomas Akdoğan, Enver Koray |
Keywords: | Unit cell expansion Synchrotron radiation YSZ Flash sintering Equation-Of-State Electric-Field Thermal Runaway Assisted Densification Lattice Expansion Temperature Microstructure Photoemission Model Onset |
Publisher: | Springer Heidelberg | Abstract: | High-energy synchrotron X-ray diffraction enables ultra-rapid data collection to determine unit cell volume evolution of 8YSZ under thermal and electric field (30 V/mm). Such an approach provides unprecedented insight into the anatomy of 8YSZ's flash sintering in the 797-810 & DEG;C interval. The densification due to flash sintering occurs in 40 s during which X-ray spectra were collected every 2 s. The densification of 8YSZ was accompanied by 0.55% anelastic peak shift on (220) reflection. Concomitantly, the applied thermal and electric field led to anelastic expansion of the cubic lattice parameter (+ 0.55%) and unit cell volume (+ 1.57%). Besides, an irreversible increase in the peak intensity (+ 22.6%), a decrease in peak width (- 18.3%), and integrated peak (- 13.6%) are determined. The observed anomalies are attributed to the response of oxygen vacancy generation and redistribution to the combined electric and thermal fields. | URI: | https://doi.org/10.1557/s43578-023-00910-4 https://hdl.handle.net/20.500.13091/4367 |
ISSN: | 0884-2914 2044-5326 |
Appears in Collections: | Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections |
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