The Effect of Alumina Addition on the Conductivity, Microstructure and Mechanical Strength of Zirconia - Yttria Electrolytes

被引：16

作者：

Badwal, S. P. S. ^{[1
]}

Ciacchi, F. T. ^{[2
]}

Zelizko, V. ^{[2
]}

机构：

[1] CSIRO Mfg Sci & Technol, Clayton, Vic 3169, Australia

[2] Ceram Fuel Cells Ltd, Noble Pk, Vic 3174, Australia

来源：

IONICS | 1998年 / 4卷 / 1-2期

关键词：

D O I：

10.1007/BF02375776

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 effect of alumina additions on the ionic conductivity and mechanical properties of 3 and 8 mol% Y2O3- ZrO2 compositions has been investigated. Such materials are of interest for use in fuel cells and other similar applications. Sintered specimens were characterised by XRD, SEM, impedance spectroscopy, four - probe DC conductivity and mechanical strength measurements. Alumina additions had no affect on the conductivity degradation behaviour at 1000 degrees C and the activation energy but resulted in an increase in the strength of 8 mol% Y2O3 - ZrO2 composition by about 25%. However, a significant drop in the ionic conductivity well above what could be accounted for by the decrease in the volume fraction of the conducting phase, was observed.

引用

页码：25 / 32

页数：8

共 21 条

[1] Badwal S. P. S., 1996, MATERIALS SCI TECHNO, V11, P567
[2] RELATIONSHIP BETWEEN PHASE-STABILITY AND CONDUCTIVITY OF YTTRIA TETRAGONAL ZIRCONIA
BADWAL, SPS
CIACCHI, FT
HANNINK, RHJ
[J]. SOLID STATE IONICS, 1990, 40-1 : 882 - 885
[3] A FULLY AUTOMATED 4-PROBE DC CONDUCTIVITY TECHNIQUE FOR INVESTIGATING SOLID ELECTROLYTES
BADWAL, SPS
CIACCHI, FT
HO, DV
[J]. JOURNAL OF APPLIED ELECTROCHEMISTRY, 1991, 21 (08) : 721 - 728
[4] YTTRIA TETRAGONAL ZIRCONIA POLYCRYSTALLINE ELECTROLYTES FOR SOLID-STATE ELECTROCHEMICAL-CELLS
BADWAL, SPS
[J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1990, 50 (05): : 449 - 462
[5] Ciacchi F. T., 1991, Journal of the European Ceramic Society, V7, P185, DOI 10.1016/0955-2219(91)90036-Y
[6] Ciacchi F. T., 1991, Journal of the European Ceramic Society, V7, P197, DOI 10.1016/0955-2219(91)90037-Z
[7] DRENNAN J, 1988, ADV CERAM, V24, P807
[8] Drennan J., 1984, SCI CERAM, V12, P267
[9] Esper FJ., 1984, ADV CERAM, V12, P528
[10] Feighery A.J., 1997, 11 INT C SOL STAT IO

← 1 2 3 →