Structure and Thermo-chemical Stability of Sr-Fe-Co-O mixed Metal Oxides
SrFexCo0.5Oδ (x=0.5,0.75,1.0,1.25) mixed metal oxides were synthesized by the citrate method.The structure and thermo-chemical stability of the obtained SrFexCo0.5Oδ powders were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM).XRD results show that the SrFexCo0.5Oδ powders are composed of perovskite-type cubic structure at both room temperature and high temperature.The crystalline phases of the SrFexCo0.5Oδ powders are dependent on the content of Fe and SrFe0.5Co0.5O3,SrFe0.19Co081O2.78 are the main crystalline phases.The powders have good thermo-chemical stability at elevated temperatures in helium,which is confirmed by an in-situ high-temperature X-ray diffraction.The SEM images show that the product of the SrFexCo0.5Oδ (x=0.5,1.0) is composed of single grain,while other two samples consist of layer structures and some open porosities.
Sr-Fe-Co-O mixed metal oxides structure thermo-chemical stability X-ray diffraction
Xianghong Huang Jun Qiao Qian-Feng Zhang
College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310015, PR Ch Institute of Molecular Engineering and Applied Chemistry, School of Materials Science and Engineerin
国际会议
太原
英文
193-197
2012-06-23（万方平台首次上网日期，不代表论文的发表时间）