CUBIC-STABILIZED ZIRCONIA AND ALUMINA COMPOSITES AS ELECTROLYTES IN PLANAR TYPE SOLID OXIDE FUEL-CELLS

被引：140

作者：

MORI, M ^{[1
]}

ABE, T ^{[1
]}

ITOH, H ^{[1
]}

YAMAMOTO, O ^{[1
]}

TAKEDA, Y ^{[1
]}

KAWAHARA, T ^{[1
]}

机构：

[1] MIE UNIV, FAC ENGN, DEPT CHEM, TSU, MIE 514, JAPAN

来源：

SOLID STATE IONICS | 1994年 / 74卷 / 3-4期

关键词：

CUBIC ZIRCONIA; OXIDE ION CONDUCTOR; SOLID OXIDE FUEL CELL (SOFC);

D O I：

10.1016/0167-2738(94)90206-2

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 electrical, mechanical and thermal properties of the 8 mol% yttria-stabilized zirconia (8YSZ) and alumina composites have been examined as a function of the alumina content. The temperature dependence of bending strength of 8YSZ showed a minimum at 500-degrees-C. The strength at 1000-degrees-C was 250 MPa, almost comparable to that at room temperature (RT). The strength of the composites increased with increasing alumina content up to 20 wt%. The composite with 20 wt% Al2O3 (20A8YSZ) showed a 3-point bending strength of 320 MPa and an excellent thermal shock resistance. The thermal conductivity of the composite increased and the thermal expansion coefficient decreased with increasing alumina content. The electrical conductivity of the composites at 1000-degrees-C increased slightly with increasing Al2O3 content up to 1 wt% and decreased monotonically with alumina content. The conductivity of 20A8YSZ was 1.0 x 10(-1) S/cm at 1000-degrees-C.

引用

页码：157 / 164

页数：8

共 27 条

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