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

scholarly journals Determination of oxygen vacancy limit in Mn substituted yttria stabilized zirconia

2018 ◽  
Vol 123 (18) ◽  
pp. 185108 ◽  
Author(s):  
Joanna Stępień ◽  
Marcin Sikora ◽  
Czesław Kapusta ◽  
Daria Pomykalska ◽  
Mirosław M. Bućko
Keyword(s):  
Oxygen Vacancy ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia

THE DIFFUSION IN FCC BINARY INTERSTITIAL ALLOY

2020 ◽  
Vol 65 (10) ◽  
pp. 18-23
Author(s):  
Hoc Nguyen Quang ◽  
Loan Pham Thi Thanh ◽  
Viet Nguyen Tuan ◽  
Le Nguyen Ngoc
Keyword(s):  
Diffusion Coefficient ◽  
Moment Method ◽  
Interstitial Atom ◽  
Diffusion Theory ◽  
Correlation Factor ◽  
Statistical Moment ◽  
Analytic Expressions ◽  
Fcc Metal ◽  
Statistical Moment Method

We build the theory of diffusion for FCC binary interstitial alloy under pressure based on the statistical moment method, where there are the analytic expressions of the jumping frequency of interstitial atom, the effective jumping length, the correlation factor, the diffusion coefficient, and the activated energy. In limit cases, we can obtain the diffusion theory for FCC metal A under pressure.

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