Scopus
🔓 Açık Erişim YÖKSİS Eşleşti
Multicycle flash sintering of cubic Y<inf>2</inf>O<inf>3</inf>-stabilized ZrO<inf>2</inf>: An in situ energy dispersive synchrotron x-ray diffraction study with high temporal resolution
Materials Today Communications · Aralık 2022
YÖKSİS Kayıtları
Multicycle flash sintering of cubic Y2O3-stabilized ZrO2: An in situ energy dispersive synchrotron x-ray diffraction study with high temporal resolution
Materials Today Communications · 2022 SCI-Expanded
DOÇENT EMİN SALUR →
Makale Bilgileri
DergiMaterials Today Communications
Yayın TarihiAralık 2022
Cilt / Sayfa33
Scopus ID2-s2.0-85136525430
Erişim🔓 Açık Erişim
Özet
The current induced unit cell volume changes, (111) Bragg peak full width at half maximum (FWHM) and its integrated intensity in 8 % Y2O3 stabilized ZrO2 (8 %YSZ) solid state electrolyte was monitored during a triple-flash sintering experiment by in situ energy dispersive x-ray diffraction using a polychromatic synchrotron probe (max, photon energy 200 keV) with 2 second temporal resolution. The first spontaneous singularity in the unit cell volume (+0.54 %) was observed at 899 °C under 15 V/mm applied field intensity, which was associated with 13 mA/mm2 current draw and an increase in density to 97 %. Following anelastic relaxation of the unit cell volume under open circuit conditions, the same applied field was applied twice in a row which resulted in additional induced singularities at 925 °C (+0.48 %) and 944 °C (+0.42 %). A floating baseline, which was above the thermal expansion baseline, was observed from 833 to 969 °C and was attributed to Joule heating. The singularity at 899 °C is associated with a sharp change in (111) FWHM and a 34 % decrease in integrated peak area that was attributed to changes in the distribution of oxygen vacancies and the changes in their concentration as induced by the applied field in the spontaneous transient stage of flash sintering.
Yazarlar (6)
1
Hülya Biçer
2
Ahmed Degnah
3
Emin Salur
4
İlyas Şavklıyıldız
ORCID: 0000-0001-7903-9220
5
Thomas Tsakalakos
6
Enver Koray Akdoğan
Anahtar Kelimeler
Diffusion
Energy dispersive x-ray diffraction
Flash sintering
Lattice expansion
Synchrotron diffraction
Kurumlar
Department of Materials Science and Engineering
Piscataway United States
Dumlupinar Üniversitesi
Kutahya Turkey
King Abdulaziz City for Science and Technology
Riyadh Saudi Arabia
Konya Technical University
Konya Turkey
Selçuk Üniversitesi
Selçuklu Turkey
Metrikler
6
Atıf
6
Yazar
5
Anahtar Kelime