Protective coating for a body as well as process and plant unit for preparing protective coatings

摘要

Protective layer for a body including at least one hard layer of metal oxide and/or metal carbide and/or metal nitride and/or metal carbonitride, where the hard layer has a morphological thickness (sic) with a columnar structure increasing perpendicular to the body surface. Independent claims are included for the following: (1) a cooking bay (sic) with a coating layer as described above; (2) a coating as described above; (3) a cooking device with a coating as described above; (4) a process for coating a body with the protective layer involving: (a) preparation of the body and layer material in a vacuum system, (b) coating of the body by a reactive physical vapor deposition process where the layer material is produced in atomic dimensions, or by magnetron- or ion beam sputtering; (5) (b1) energy enrichment of the coating obtained under (b) with production of a columnar morphological structure; and (6) a device for coating the body in glass, glass/ceramic or working nonmetallic crystalline material.