Dislocation-enhanced ionic conductivity of yttria-stabilized zirconia

被引：82

作者：

Otsuka, K

Kuwabara, A

Nakamura, A

Yamamoto, T

Matsunaga, K

Ikuhara, Y

机构：

[1] Univ Tokyo, Dept Mat Engn, Sch Engn, Bunkyo Ku, Tokyo 1138656, Japan

[2] Univ Tokyo, Dept Adv Mat Sci, Grad Sch Frontier Sci, Bunkyo Ku, Tokyo 1138656, Japan

[3] Univ Tokyo, Inst Engn Innovat, PRESTO, Japan Sci & Technol Corp,Bunkyo Ku, Tokyo 1138656, Japan

来源：

APPLIED PHYSICS LETTERS | 2003年 / 82卷 / 06期

关键词：

D O I：

10.1063/1.1544440

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The ionic conductivity of yttria-stabilized zirconia (YSZ) single crystals (10 mol %Y2O3-ZrO2) was enhanced by introducing high density of dislocations. YSZ single crystals were systematically deformed by compression tests at 1300 degreesC, and their electrical conductivity was measured by an AC impedance method. It was confirmed that a great number of dislocations were introduced in YSZ by the high-temperature deformation, and the density reached up to more than 8x10(12) m(-2), depending on the compression strains imposed on the samples. The electrical conductivity of the deformed samples was found to be larger than that of undeformed samples. Furthermore, samples with larger strains exhibited higher electrical conductivity, which indicates that dislocations generated by the plastic deformation play an important role to enhance the ionic conductivity of YSZ. (C) 2003 American Institute of Physics.

引用

页码：877 / 879

页数：3

共 11 条

[1] Electrical conductivity of the ZrO2-Ln2O3 (Ln = lanthanides) system [J].