Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1625676 | Journal of Alloys and Compounds | 2007 | 6 Pages |
Abstract
The citrate method was used to synthesize Sr(Ce1âxZrx)0.95Yb0.05O3âδ (x = 0.1, 0.2, 0.3, 0.4) and to avoid the drawbacks of the conventional solid state reaction method. The products were characterized by thermal analysis (TG-DTA), X-ray diffraction (XRD), scanning electron microscopy (SEM) and electron probe X-ray microanalyzer (EPMA). The results indicate that the citrate method is an advantageous route in producing Sr(Ce1âxZrx)0.95Yb0.05O3âδ materials. Sr(Ce0.9Zr0.1)0.95Yb0.05O3âδ powders are composed of nanoscaled crystallites with the average grain size in the range of 60-70 nm. Single phase is confirmed over the whole x range. In addition, chemical stability against CO2 and electrical conduction behavior of the sintered Sr(Ce1âxZrx)0.95Yb0.05O3âδ ceramics were investigated. The chemical stability of the ceramics against CO2 is certified to increase with the increase in zirconium content. Impedance spectroscopy was used to study the electrical conduction behavior of Sr(Ce0.9Zr0.1)0.95Yb0.05O3âδ ceramic.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Jingchao Zhang, Zhaoyin Wen, Jinduo Han, Jianguo Wu, Shahua Huang, Xiujian Zhu,