FFECT OF TEMPERATURE ON ELECTRICAL PROPERTIES OF YTTRIA-DOPED CERIA AND YTTRIA-STABILIZED ZIRCONIA

2019 ◽  
Vol 64 (6) ◽  
pp. 68-76
Author(s):  
Lam Le Thu ◽  
Hung Vu Van ◽  
Hai Nguyen Thanh
Keyword(s):  
Electrical Properties ◽  
Yttria Stabilized Zirconia ◽  
Doped Ceria ◽  
Stabilized Zirconia ◽  
Yttria Doped Ceria

scholarly journals STUDY OF OXYGEN VACANCY DIFFUSION IN YTTRIA-DOPED CERIA AND YTTRIA-STABILIZED ZIRCONIA BY STATISTICAL MOMENT METHOD

2019 ◽  
Vol 29 (3) ◽  
Author(s):  
Le Thu Lam ◽  
Vu Van Hung ◽  
Nguyen Thanh Hai
Keyword(s):  
Oxygen Vacancy ◽  
Moment Method ◽  
Statistical Moment ◽  
Yttria Stabilized Zirconia ◽  
Doped Ceria ◽  
Migration Energy ◽  
Stabilized Zirconia ◽  
Yttria Doped Ceria ◽  
Oxygen Vacancy Diffusion ◽  
Statistical Moment Method

Oxygen vacancy diffusion in yttria-doped ceria (YDC) and yttria-stabilized zirconia(YSZ) are investigated using statistical moment method, including the anharmonicity effects of thermal lattice vibrations. The expressions of oxygen vacancy-dopant association energy and oxygen vacancy migration energy are derived in an explicit form. Calculation of the vacancy migration energy enable us to evaluate the important role of dopant cation on the oxygen vacancydiffusion. The dependences of the vacancy activation energies and diffusion coefficients in YDC and YSZ systems on dopant concentration are also discussed in detail. The calculated results are in good agreement with the other theoretical and experimental results.

TEM Observation of Reaction at the Interface between Yttria-Doped Ceria and Yttria-Stabilized Zirconia

1997 ◽  
Vol 129 (1) ◽  
pp. 74-81 ◽  
Author(s):  
Hidemi Mitsuyasu ◽  
Yasushi Nonaka ◽  
Koichi Eguchi ◽  
Hiromichi Arai
Keyword(s):  
Yttria Stabilized Zirconia ◽  
Doped Ceria ◽  
Stabilized Zirconia ◽  
Yttria Doped Ceria
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