Microstructure and electrical properties of Sr1 − x Na x SiO3 − x/2 ceramics prepared by SPS process
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- 作者：F. Yang ; Z. Yu ; B. Meng ; Y. J. Zhu ; Q. Q. Yang ; Z. L. Lin ; H. M. Zhou…
- 关键词：Oxygen ion conductors ; Sr1 − xNaxSiO3 − x/2 ; Spark plasma sintering ; Electrical properties ; SrSiO3
- 刊名：Ionics
- 出版年：2016
- 出版时间：November 2016
- 年：2016
- 卷：22
- 期：11
- 页码：2087-2093
- 全文大小：840 KB
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Electrochemistry
Materials Science
Physical Chemistry
Condensed Matter
Renewable Energy Sources
Electrical Power Generation and Transmission - 出版者：Springer Berlin / Heidelberg
- ISSN：1862-0760
- 卷排序：22
文摘
The Sr1 − xNaxSiO3 − x/2 samples (SNS, x = 0.2, 0.3, 0.4, 0.45) were prepared by spark plasma sintering (SPS) at a lower sintering temperature of 850 °C for a shorter holding time of 5 min. All SNS samples by SPS are composed of single monoclinic SrSiO3 phase, and the grain sizes are in the range of 1.9 ± 0.5 μm. The measurement results of the electrical properties show that the conductivities of SPS samples are one order of magnitude higher than those of the samples by traditional sintering method. The ion transference numbers of SNS samples by SPS are all higher than 0.99 in the temperature range of 500∼650 °C, which demonstrates that the SNS has met the requirements as solid oxide fuel cell electrolytes and the SPS process is a promising candidate for preparations of SNS electrolytes.
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