Durable Glass-Ceramic Coatings For Foam Glass

This work describes the design and development of two new silica-based glass-ceramic coatings, suitable to be applied as slurries on a foam glass substrate. The coating process was optimised for both compositions, according to their sintering behaviour. Scanning electron microscopy observations and coefficient of thermal expansion measurements revealed a good thermo-mechanical compatibility between the foam glass substrate and both coatings. The proposed coatings showed excellent chemical durability; no weight loss was observed after soaking in distilled water at 90 deg C for 16 days.