ENAMEL POWDER, METAL COMPONENT HAVING A SURFACE PORTION PROVIDED WITH AN ENAMEL COATING AND METHOD FOR PRODUCING SUCH A METAL COMPONENT

摘要

According to the invention, an enamel powder for producing a coating that is able to withstand high mechanical and thermal stresses and is simultaneously easily workable is provided as a mixture containing 100 parts of a glass powder, optionally 10-22 parts of coarse glass grains that are larger than the glass powder particles, 0.1-7.5 parts of ceramic fibres, glass fibres or carbon fibres, and as alternatives to one another or in combination with one another, 10-21 parts of a powdered oxide compound of a light metal or 1-5 parts of a powdered heavy metal. A metal component provided with a coating produced from an enamel powder according to the invention reliably withstands application of a hot gas flow. Therefore the coating according to the invention is particularly suitable for coating internal combustion engine components exposed to a flow of exhaust gas. The invention also specifies a method with which such metal components can be provided with an enamel coating.