The glass-ceramic sealant materials obtained from basalt for SOFC

Abstract

In the current study, utilization possibilities of the basalt based glass-ceramic as a sealant material for solid oxide fuel cell (SOFC) were investigated. Crushed, milled and sieved basalt powders were modified by some additives. The basalt powder and modified mixture were separately melted in alumina crucible and cast into water to obtain glass granules. These granules were milled, and exposed to heating microscopy and differential thermal analysis (DTA). Some parameters such as glass transition and softening temperature were determined by these analyses. The powders were applied on the Crofer 22 APU interconnector material, and heat treatment was carried out. The interface characteristics between the glass-ceramic layer and interconnector were characterized using X-ray diffraction analysis (XRD) and scanning electron microscopy (SEM). The results showed that the basalt base glass-ceramic sealant material exhibited promising properties to use for SOFC.