Effects on sintering and electrical properties of La0.7Ca 0.3Cr0.9Co0.1O3-δ system, a interconnect material for cylindrical and flat tubular solid oxide fuel cells (SOFC), have been investigated by Ca-source when using CaCO3 and CaF2.. When using CaCO3 and CaF2 was mixing as Ca-source, single phased perovskite solid solution was observed for each sample. The sintering temperature was decreased by CaF3 contents was increased. When using 0.1 mole CaF3 was densely sintered at 1400°C and relative density was 93.8%. Also, electrical conductivity in oxidation and reducing atmosphere was 47, 4.3 S/cm, respectively, due to F-ion enhance the electrical conductivity in reducing atmosphere.
All Science Journal Classification (ASJC) codes
- Ceramics and Composites