Abstract
La1-x Srx MnO3 is usually applied as cathode material of SOFC. Since conductivity, porosity and mechanical strengh are required to this cathode, selection of the diameter of the raw powder as well as sintering at appropriate conditions are indispensable. In this paper, sintering characteristics is analysed by using thermal dilatometer, for the purpose of obtaining the fundamental characteristics for several material. Influence of the sintering temperature, time and powder diameter on the sintering characteristics was clarified. And this sintering characteristics measured by dilatometer was shown to express the actual one well. Moreover, stability of the sinterd body was also investigated at 1, 000°C and large shrinkage was observed for non-stoichiometric material. As a result, sintering shrinkage measurement by thermal dilatometer was revealed to be useful in these analysis.
