Protective coating

摘要

A heat resistant protective coating for a metal surface comprises a glass matrix having at least 50 percent by weight of finely divided metallic particles dispersed therein. The coating is produced by covering the metal surface with a mixture containing 40 to 60% by weight of finely divided metallic particles, 17 to 40% by weight of a ceramic frit and from 10 to 18% by weight of an organic resin, and heating the thus coated surface in air to burn off the organic resin and fuse the frit.