Microstructure development of plasma-sprayed yttria-stabilized zirconia and its effect on electrical conductivity

被引：8

作者：

Xing, Ya-Zhe ^{[1
]}

Li, Cheng-Xin ^{[1
]}

Li, Chang-Jiu ^{[1
]}

Long, Hui-Guo ^{[1
]}

Xie, Ying-Xin ^{[1
]}

机构：

[1] Xian Jiaotong Univ, Sch Mat Sci & Engn, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China

来源：

SOLID STATE IONICS | 2008年 / 179卷 / 27-32期

基金：

中国国家自然科学基金; 国家高技术研究发展计划(863计划);

关键词：

solid oxide fuel cells; atmospheric plasma spraying; yttria-stabilized zirconia; bonding; electrical conductivity;

D O I：

10.1016/j.ssi.2007.11.020

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：

4.5 mol% yttria-stabilized zirconia (YSZ) deposit was prepared by atmospheric plasma spraying (APS) using an agglomerate-sintered YSZ powder. Two samples were continuously deposited at two spray distances of 80 mm and 90 mm without intermittence during spraying. The measurement showed that the ionic conductivity of the YSZ deposit at 1000 degrees C significantly decreased from 0.06 S/cm to 0.033 S/cm with increasing spray distance from 80 mm to 90 mm. The deposit microstructure exhibited distinct interfaces between consecutive pass layers in the deposit sprayed at long spray distance. The decrease of ionic conductivity can be ascribed to change of the bonding ratio between consecutive passes resulting from decrease of deposition temperature with the increase of spray distance. (C) 2007 Elsevier B.V All fights reserved.

引用

页码：1483 / 1485

页数：3

共 16 条

[1]

BOWDEN FB, 1964, FRICTION LUBRICATION, P34

[2] Ionic conductivity of zirconia based ceramics from single crystals to nanostructured polycrystals [J].