Phase structure and thermal evolution in coatings and powders obtained by the sol-gel process .1. ZrO2-11.3 mol% Y2O3

被引：21
|
作者：
Rivas, PC [1 ]
Caracoche, MC [1 ]
Martinez, JA [1 ]
Rodriguez, AM [1 ]
Caruso, R [1 ]
Pellegri, N [1 ]
deSanctis, O [1 ]
机构：
[1] UNIV NACL ROSARIO,FCEIYA,LAB MAT CERAM,IFIR,RA-2000 ROSARIO,ARGENTINA
来源：
JOURNAL OF MATERIALS RESEARCH | 1997年 / 12卷 / 02期
关键词：
D O I：
10.1557/JMR.1997.0071
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Yttria-stabilized cubic zirconia powders and coatings produced by the sol-gel method have been investigated by Perturbed Angular Correlation Spectroscopy (PAC). Results indicate that the metastable cubic phase is retained during heating and cooling cycles. The hyperfine interaction that describes this cubic phase, once crystallized, exhibits two components in a constant ratio of 4:1. The components represent different vacancy configurations. For the fast movement of oxygen vacancies starting at 750 degrees C, which is reflected by the damping of the hyperfine pattern, an activation energy of 0.96 eV was determined.
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收藏
页码：493 / 500
页数：8
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