VITREOUS ENAMELS

摘要

A process for applying a vitreous enamel comprises applying a powdered vitreous frit to a metal, said frit having a water content of up to 0.03% by weight; this coated metal then being fired at a temperature in excess of the melting point of the frit, in a furnace having an atmosphere with a dew point of up to 10 DEG C. Metal particles may be admixed with the powdered frit to form a cermet or glass/metal composite. The powdered frit may be applied to a substrate as a non-aqueous slurry or an aqueous slurry including a polysaccharide based suspension agent.