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AN OPTICAL IN-SITU STUDY OF THE RE-OXIDATION KINETICS OF CALCIA-STABILIZED ZIRCONIA

被引：15
作者：
HE, T
BECKER, KD
TANNHAUSER, DS
机构：
[1] UNIV HANNOVER,INST PHYS CHEM & ELEKTROCHEM,D-30167 HANNOVER,GERMANY
[2] UNIV HANNOVER,SFB 173,D-30167 HANNOVER,GERMANY
[3] TECHNION ISRAEL INST TECHNOL,DEPT PHYS,IL-32000 HAIFA,ISRAEL
来源：
BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 1995年 / 99卷 / 04期
关键词：
CHEMICAL KINETICS; CRYSTALS; DIFFUSION; REACTIVITY OF SOLIDS; SPECTROSCOPY; VISIBLE;
D O I：
10.1002/bbpc.19950990410
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The re-oxidation kinetics of strongly reduced single crystals of calcia-stabilized zirconia (black CSZ) have been investigated by an optical in-situ method at temperatures between 335 and 520 degrees C. The kinetics obey a parabolic rate law. From the analysis of the optical results it follows that the parabolic rate constant, k(p), is controlled by the ionic conductivity of the oxygen ions. The temperature dependence of k(p) can be represented by an Arrhenius-type equation with an activation energy of 1.05 eV. The nature of-the defect center associated with black CSZ is discussed in connection with its oscillator strength.
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页码：658 / 666
页数：9
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