Grain Boundary Resistivity of Yttria-Stabilized Zirconia at 1400°C

IF 18.6 1区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS
Jun Wang, A. Du, Di Yang, R. Raj, H. Conrad
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引用次数: 7

Abstract

The grain size dependence of the bulk resistivity of 3 mol% yttria-stabilized zirconia at 1400°C was determined from the effect of a dc electric field V/cm on grain growth and the corresponding electric current during isothermal annealing tests. Employing the brick layer model, the present annealing test results were in accordance with extrapolations of the values obtained at lower temperature employing impedance spectroscopy and 4-point-probe dc. The combined values give that the magnitude of the grain boundary resistivity ohm-cm. The electric field across the grain boundary width was 28–43 times the applied field for the grain size and current ranges in the present annealing test.
氧化钇稳定氧化锆在1400℃时的晶界电阻率
通过等温退火试验中直流电场V/cm对晶粒生长和相应电流的影响,确定了3mol %钇稳定氧化锆在1400℃时的体积电阻率与晶粒尺寸的关系。采用砖层模型,本文的退火试验结果与采用阻抗谱法和4点探针直流电法在较低温度下得到的值的外推结果一致。综合计算得到晶界电阻率的大小为欧姆-厘米。在本退火试验中,晶粒尺寸和电流范围的电场宽度为外加电场的28 ~ 43倍。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Advanced Ceramics
Journal of Advanced Ceramics MATERIALS SCIENCE, CERAMICS-
CiteScore
21.00
自引率
10.70%
发文量
290
审稿时长
14 days
期刊介绍: Journal of Advanced Ceramics is a single-blind peer-reviewed, open access international journal published on behalf of the State Key Laboratory of New Ceramics and Fine Processing (Tsinghua University, China) and the Advanced Ceramics Division of the Chinese Ceramic Society. Journal of Advanced Ceramics provides a forum for publishing original research papers, rapid communications, and commissioned reviews relating to advanced ceramic materials in the forms of particulates, dense or porous bodies, thin/thick films or coatings and laminated, graded and composite structures.
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