Patent attributes
The invention relates to a transparent protective layer, in particular a scratchproof layer for glass and glass-ceramic, which is able to withstand high temperatures, has a smooth and dense surface, an attractive surface design and is preferably used for coating cooking plates. A protective layer according to the invention comprises at least one crystalline metal oxide layer which has at least one interlayer formed from an amorphous, thermally stable mixed oxide, the interlayer being arranged being sublayers of the metal oxide layer. A further protective layer according to the invention comprises at least one amorphous, thermally stable mixed oxide layer which has at least one interlayer formed from a crystalline metal oxide, the interlayer being arranged between the sublayers of the amorphous mixed oxide layer. The amorphous mixed oxide layer has at least two metallic components. The crystalline metal oxide layers preferably consist of yttrium-stabilized zirconium oxide, and the amorphous mixed oxide layers preferably consist of titanium/aluminum oxide.
