Investigation on the phase stability of yttria-stabilized zirconia electrolytes for high-temperature electrochemical application

2019 ◽  
Vol 45 (7) ◽  
pp. 9462-9467 ◽  
Author(s):  
Kuk-Jin Hwang ◽  
Miyoung Shin ◽  
Myung-Hyun Lee ◽  
Heesoo Lee ◽  
Mi Young Oh ◽  
...  
Keyword(s):  
High Temperature ◽  
Phase Stability ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Electrochemical Application

High temperature phase stability and chemical analysis of the highly doped yttria stabilized zirconia with alumina

2012 ◽  
Vol 38 (6) ◽  
pp. 4813-4818
Author(s):  
S. Nazarpour ◽  
C. López-Gándara ◽  
F.M. Ramos ◽  
C. Zamani ◽  
A. Cirera ◽  
...  
Keyword(s):  
High Temperature ◽  
Chemical Analysis ◽  
Phase Stability ◽  
High Temperature Phase ◽  
Yttria Stabilized Zirconia ◽  
Temperature Phase ◽  
Stabilized Zirconia

Effect of Coupled Conditions of Thermal Cycle and Dump Environment on Conductivity of 5mol% Yttria Stabilized Zirconia

2013 ◽  
Vol 591 ◽  
pp. 245-248 ◽  
Author(s):  
Jin Feng Xia ◽  
Hong Qiang Nian ◽  
Tao Feng ◽  
Hai Fang Xu ◽  
Dan Yu Jiang
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Transmission Electron Microscopy ◽  
High Temperature ◽  
Thermal Cycle ◽  
Oxygen Sensor ◽  
Yttria Stabilized Zirconia ◽  
Cyclic Change ◽  
Stabilized Zirconia ◽  
Transmission Electron

In some applications such as automotive oxygen sensor, 5mol% Y2O3stabilized zirconia (5YSZ) is generally used because it has both excellent ionic conductivity and mechanical properties. The automotive oxygen sensor would experience a cyclic change from high temperature (engine running) environment to the low temperature damp environment (in the tail pipe when vehicle stops). The conductivity change with coupled conditions of thermal cycle and dump environment in the 5mol%Y2O3ZrO2(5YSZ) system was examined by XRD,Impedance spectroscopy and transmission electron microscopy (SEM) in this paper.

Effect of Cation Dopant on Phase Stability of Zirconia Bioceramics in Hot Water

2006 ◽  
Vol 49 ◽  
pp. 97-102 ◽  
Author(s):  
Yorinobu Takigawa ◽  
Yukihisa Naka ◽  
Kenji Higashi
Keyword(s):  
Phase Transformation ◽  
Phase Stability ◽  
Ionic Radius ◽  
Hot Water ◽  
Yttria Stabilized Zirconia ◽  
Transformation Behavior ◽  
Stabilized Zirconia

The effect of cation ion dopant on phase transformation of zirconia bioceramics is evaluated by ageing in hot water. The phase transformation progresses with time in all specimens. However, the transformation behavior is much different depending on the dopant. The transformation is promoted when the 1 mol% of pentavalent element is added to 3mol% yttria stabilized zirconia (3Y-TZP). In contrast, the transformation is suppressed when the bivalent element is added. In case that the tetravalent element is added, the transformation is promoted if the ionic radius of the element is larger than that of zirconium, and the transformation is suppressed if the element with smaller ionic radius than zirconium ion is added. This result indicates that the ionic radius and the valency of ions are important factors to control the phase stability in zirconia.

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