Fracture resistance of yttria stabilized zirconia manufactured from stabilizer-coated nanopowder by micro cantilever bending tests

2019 ◽  
Vol 39 (13) ◽  
pp. 3830-3836 ◽  
Author(s):  
S. Giese ◽  
F. Kern ◽  
C.A. Macauley ◽  
S. Neumeier ◽  
M. Göken
2022 ◽  
pp. 110398
Author(s):  
Jae-Hoon Choi ◽  
Hojang Kim ◽  
Ji-Young Kim ◽  
Kwang-Hyeok Lim ◽  
Byung-Chai Lee ◽  
...  

2019 ◽  
Vol 136 ◽  
pp. 103086 ◽  
Author(s):  
Ronan Henry ◽  
Thierry Blay ◽  
Thierry Douillard ◽  
Armel Descamps-Mandine ◽  
Isabelle Zacharie-Aubrun ◽  
...  

2020 ◽  
Vol 538 ◽  
pp. 152209 ◽  
Author(s):  
Ronan Henry ◽  
Isabelle Zacharie-Aubrun ◽  
Thierry Blay ◽  
Smail Chalal ◽  
Jean-Marie Gatt ◽  
...  

2009 ◽  
Vol 18 (1) ◽  
pp. 17-22 ◽  
Author(s):  
Nimet D. Adatia ◽  
Stephen C. Bayne ◽  
Lyndon F. Cooper ◽  
Jeffery Y. Thompson

Author(s):  
W. W. Davison ◽  
R. C. Buchanan

Yttria stabilized zirconia (YSZ) has become a significant technological material due to its high ionic conductivity, chemical inertness, and good mechanical properties. Temperatures on the order of 1700°C are required, however, to densify YSZ to the degree necessary for good electrical and mechanical properties. A technique for lowering the densification temperature is the addition of small amounts of material which facilitate the formation of a liquid phase at comparatively low temperatures. In this study, sintered microstructures obtained from the use of Al2O3 as a sintering aid were examined with scanning, transmission, and scanning transmission microscopy (SEM, TEM, and STEM).


2020 ◽  
Vol 38 (4A) ◽  
pp. 491-500
Author(s):  
Abeer F. Al-Attar ◽  
Saad B. H. Farid ◽  
Fadhil A. Hashim

In this work, Yttria (Y2O3) was successfully doped into tetragonal 3mol% yttria stabilized Zirconia (3YSZ) by high energy-mechanical milling to synthesize 8mol% yttria stabilized Zirconia (8YSZ) used as an electrolyte for high temperature solid oxide fuel cells (HT-SOFC). This work aims to evaluate the densification and ionic conductivity of the sintered electrolytes at 1650°C. The bulk density was measured according to ASTM C373-17. The powder morphology and the microstructure of the sintered electrolytes were analyzed via Field Emission Scanning Electron Microscopy (FESEM). The chemical analysis was obtained with Energy-dispersive X-ray spectroscopy (EDS). Also, X-ray diffraction (XRD) was used to obtain structural information of the starting materials and the sintered electrolytes. The ionic conductivity was obtained through electrochemical impedance spectroscopy (EIS) in the air as a function of temperatures at a frequency range of 100(mHz)-100(kHz). It is found that the 3YSZ has a higher density than the 8YSZ. The impedance analysis showed that the ionic conductivity of the prepared 8YSZ at 800°C is0.906 (S.cm) and it was 0.214(S.cm) of the 3YSZ. Besides, 8YSZ has a lower activation energy 0.774(eV) than that of the 3YSZ 0.901(eV). Thus, the prepared 8YSZ can be nominated as an electrolyte for the HT-SOFC.


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