Microstructural Evolution of BCFZY Electrode during Sintering

When sintered within the temperature range of 1150 to 1200ﾰC, the particle surfaces exhibited roughness. Large voids, ranging in size from 1.07 to 4.49a, were observed between particles, with many remaining isolated rather than in complete contact with surrounding particles. At a sintering temperature of 1250ﾰC, the BCFZY-SE morphology displayed a porous and uniform three-dimensional network structure. Upon increasing the sintering temperature to 1350ﾰC, evident sintering phenomena, characterized by grain-to-grain bonding and melting, were observed in the BCFZY electrode.