EFFECT OF (Bi2O3)0.75(Y2O3)0.25 ADDITION ON MICROSTRUCTURES AND IONIC CONDUCTIVITIES OF CODOPED ZIRCONIA

被引：1
|
作者：
Chou, Chen Chia [1 ]
Huang, Chun Feng [1 ]
Yeh, Tsung Her [2 ]
机构：
[1] Natl Taiwan Univ Sci & Technol, Adv Ceram Lab, Dept Mech Engn, Taipei 106, Taiwan
[2] Ming Chi Univ Technol, Ctr Thin Film Technol & Applicat, Dept Mat Engn, New Taipei City 24301, Taiwan
来源：
FUNCTIONAL MATERIALS LETTERS | 2012年 / 5卷 / 03期
关键词：
Microstructures; ionic conductivity; codoped zirconia; electrolyte; phase transformation; STABILIZED ZIRCONIA; SOLID-ELECTROLYTE; LIQUID PHASE; OXIDE; SAMARIUM; SYSTEM;
D O I：
10.1142/S1793604712500312
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Variation of microstructures and ionic conductivities in (Bi2O3)(0.75)(Y2O3)(0.25) (YSB) modified electrolyte of 8 mol% Y2O3 stabilized zirconia (8YSZ) and YSB modified codoped zirconia (ZrO2)(0.92)(Y2O3)(0.075)(MgO)(0.005) (YSZM) is investigated in this work. The results demonstrated that a small amount of delta-YSB addition is effective in reducing the sintering temperature of 8YSZ from 1500 to 1200 degrees C and promoting the densification rate of ceramics. Compared to 8YSZ electrolyte, it is interesting that a very limited amount of monoclinic ZrO2 was observed due to the MgO stabilizer in YSB modified codoped zirconia electrolyte. Besides, enhancement of ionic conductivity in delta-YSB modified codoped zirconia is evidently increased by 67% in comparison to the specimen of 8YSZ electrolyte.
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页数：6
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