Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10626276 | Ceramics International | 2011 | 7 Pages |
Abstract
One of the major challenges in developing proton conducting CaZr0.9In0.1O3âδ is to achieve a high densification at low sintering temperature. In this work, an auto-ignition combustion process was first used to synthesize CaZr0.9In0.1O3âδ powders aiming to improve its sinterability. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and dilatometry measurement. The results indicate that a calcination temperature of 1000 °C is sufficient to form the CaZr0.9In0.1O3âδ phase. The as-obtained powders are fine, homogeneous and well crystallized, which strongly improves the sintering properties. Dense CaZr0.9In0.1O3âδ ceramics with uniform grain size were obtained by sintering at 1350 °C, which is much lower than that required for the conventional solid state reaction method. In addition, the electrical properties of CaZr0.9In0.1O3âδ ceramics were studied by electrochemical impedance spectroscopy.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Jingchao Zhang, Zhaoyin Wen, Jinduo Han, Yu Liu, Shufeng Song, Ting-lian Wen,