Analysis of impact of sintering time on microstructure of LSM-YSZ composite cathodes by X-ray nanotomography

作者：Guan, Yong; Gong, Yunhui; Liu, Gang^*; Song, Xiangxia; Zhang, Xiaobo; Xiong, Ying; Wang, Haiqian; Tian, Yangchao

来源：Materials Express, 2013, 3(2): 166-170.

DOI：10.1166/mex.2013.1116

• Sintering
• X-ray Techniques
• Microstructure
• Ceramic Composites

The ability to visualize three-dimensional (3D) microstructural changes in cathodes caused by processing can help elucidate the impact of microstructure on cathode performance. This study presents the utilization of a nano computed tomography (nano-CT) technique to image the 3D microstructures of four (La0.8Sr0.2)(0.95)MnO3 yttria-stabilized zirconia composite cathodes, which were sintered for 1, 2, 3 and 4 h at 1423 K, respectively. Based on the 3D reconstructions obtained, key structural parameters, such as the solid-to-pore volume ratio of LSM-YSZ, surface area and tortuosity, were calculated. Studying the 3D microstructural changes in cathodes submitted to different sintering times may provide a new method of exploring the relationship between processing conditions and cathode performance.

• 出版日期2013-6
• 单位中国科学技术大学