Effect of grain size on electrical properties of scandia-stabilized zirconia

被引：10

作者：

Shimonosono, Taro ^{[1
,4
]}

Kimura, Haruki ^{[1
,2
]}

Sakka, Yoshio ^{[1
,2
,3
]}

机构：

[1] Natl Inst Mat Sci, Nano Ceram Ctr, Tsukuba, Ibaraki 3050047, Japan

[2] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3050047, Japan

[3] Natl Inst Mat Sci, World Premier Int Ctr Initiat Mat Nanoarchitron M, Tsukuba, Ibaraki 3050047, Japan

[4] Natl Inst Adv Ind Sci & Technol, Energy Technol Res Inst, Tsukuba, Ibaraki 3058568, Japan

来源：

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2010年 / 118卷 / 1383期

关键词：

Electrical conductivity; Scandia-stabilized zirconia; Phase transition; Solid oxide fuel; CONDUCTIVITY; MICROSTRUCTURE; TRANSFORMATION; TEMPERATURE; DEPENDENCE;

D O I：

10.2109/jcersj2.118.1038

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

10 mol % Sc2O3-stabilized ZrO2 (10ScSZ) was sintered by several processes including spark plasma sintering, milliwave sintering and conventional sintering. The electrical conductivity of the sintered 10ScSZ samples was obtained by AC impedance spectra, and compared with grain size and the crystal phase. As average grain size decreased, the electrical conductivities decreased and increased at temperatures higher and lower than the phase transition point, respectively. These trends suggested that the fraction of a low conductivity rhombohedral phase increases with increasing grain size at a temperature lower than the phase transition point, and that the total thickness of the grain boundary affects the electrical conductivity at a temperature higher than the phase transition point. (C) 2010 The Ceramic Society of Japan. All rights reserved.

引用

页码：1038 / 1043

页数：6

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