多層スラリーキャスト法によって作製した円筒型SOFC用二層管の焼成プロセスに関する研究

抄録

Sintering behavior of YSZ/NiO-YSZ two-layer ceramics for a tubular SOFC fabricated by the Multilayer Slurry Casting (MSC) process was studied. Cracks were observed in the two-layer ceramics after the sintering process, when the NiO content in the fuel electrode exceeded 50wt% for the electrolyte of 8mol% YSZ. Direct observation of the sintering process and SEM observation of fractured samples showed that cracks occurred at about 1200°C during heating, These results could be explained as that cracks were generated by the difference in sintering rates between the electrolyte (YSZ) and fuel electrode (NiO-YSZ).