USE OF AN ENAMELLING COMPOSITION, ENABLING TO AVOID FISH-SCALES AND RESULTING ENAMELLED SHEET

摘要

The invention concerns a sheet metal enamelled on both surfaces, the enamel comprising a vitreous phase wherein is dispersed at least a crystallised mineral compound which, at 300 DEG C, has a protonic conductivity higher than 10<-6> S.cm<-1>, and which is dispersed in a proportion sufficient for providing the enamel with impermeability to hydrogen higher than 10<-11> g.cm<-2>.s<-1> in the range of temperatures between 300 DEG C and the enamel glass transition temperature. The invention also concerns the enamel composition and a method for making said sheet. The invention enables enamelling grades of steel considered to be enamel-resistant.