Crystallisation kinetic studies of glasses are very important to understand the effect of the formation of various crystalline phases on sealing properties. These phases may degrade the performance of solid oxide fuel cells. The formation of these phases mainly depends on the raw materials used in making the glasses and processing conditions. Thus, the role of intermediate cations on the crystallisation kinetics of CaO-BsO-SiO2-A2O3 glasses was studied using various techniques. Isothermal heat treatment at 800 deg C of the synthesized glasses resulted in the surface crystallisation of different crystalline phases. Based on the results of the crystallisation kinetics studies, the La2O3 containing glass was selected for an interaction study with the interconnect material Crofer 22APU. The interface and diffusion couples were investigated using SEM and EDS.
