ROLE OF GRAIN-BOUNDARIES ON THE ELECTRICAL-PROPERTIES OF TITANIA DOPED YTTRIA-STABILIZED ZIRCONIA

被引：30

作者：

COLOMER, MT ^{[1
]}

TRAQUEIA, LSM ^{[1
]}

JURADO, JR ^{[1
]}

MARQUES, FMB ^{[1
]}

机构：

[1] UNIV AVEIRO,DEPT CERAM & GASS ENGN,P-3800 AVEIRO,PORTUGAL

来源：

MATERIALS RESEARCH BULLETIN | 1995年 / 30卷 / 04期

关键词：

YTTRIA STABILIZED ZIRCONIA; TITANIA;

D O I：

10.1016/0025-5408(95)00022-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

10 mol% titania doped YSZ samples were prepared by high temperature firing of mixtures of YSZ and TiO2. The role of firing time (2 to 16h) and temperature (1300 to 1600 degrees C) on the low temperature electrical behavior in air was found significant. For samples sintered for 2h at different temperatures, the grain boundary conductivity increased with firing temperature. For samples sintered at constant temperature (1500 degrees C) the grain boundary conductivity increased with firing time up to about 8h. The role of grain boundaries on the high temperature electronic conductivity under reducing conditions was found negligible when compared to the low temperature data in air, suggesting that at high temperature the overall conductivity is determined by the bulk grain behavior.

引用

页码：515 / 522

页数：8

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