The influence of the sintering temperature on BaZr0.7Ce0.2Y0.1O3-δ proton conductors prepared by Spark Plasma Sintering

被引：12

作者：

Wallis, J. ^{[1
]}

Ricote, S. ^{[2
]}

Weltmann, K-D ^{[1
]}

Burkel, E. ^{[3
]}

Kruth, A. ^{[1
]}

机构：

[1] Leibniz Inst Plasma Sci & Technol, Felix Hausdorff Str 2, D-17489 Greifswald, Germany

[2] Colorado Sch Mines, Golden, CO 80401 USA

[3] Univ Rostock, Albert Einstein Str 23, D-18059 Rostock, Germany

来源：

CERAMICS INTERNATIONAL | 2021年 / 47卷 / 11期

关键词：

Spark plasma sintering; Barium zirconate; Proton conductor; Solid oxide electrolyte; FULLY STABILIZED ZIRCONIA; ELECTRICAL-PROPERTIES; GRAIN-GROWTH; PRESSURE; BULK; DENSIFICATION; PERFORMANCE; TRANSPORT; FIELD;

D O I：

10.1016/j.ceramint.2021.02.100

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：

BaZr0?7Ce0?2Y0?1O3-? (BZCY72) proton-conducting ceramics were prepared by Spark Plasma Sintering. The effect of the sintering temperature (1150?1650?C) on the microstructural, crystallographic, and electrochemical properties of BZCY72 as well as long-term stability was investigated. From X-ray diffraction, rhombohedral BZCY72 was observed at all sintering temperatures. Specimen with the highest relative densities of around 99.5% were obtained at 1450?C, also exhibiting high stability in ambient laboratory air over a period of six months. Total conductivities of 1.01 ? 10-3 S cm-1 were obtained at 600?C in moist 5%H2/Ar. With increasing temperature the samples were denser, exhibited larger crystallite and grain sizes and consequently higher GB conductivities. A small increase in bulk conductivity was discussed in terms of decrease of degree of octahedra tilting and increase of B?O bond lengths.

引用

页码：15349 / 15356

页数：8

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