Schott Ag

Schott Glas

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Cora Krause

Bernd Schultheis

Inka Henze

Lutz Klippe

Friedrich Siebers

Ina Mitra

Otmar Becker

Harry Engelmann

Michael Bug

Monica Cotlear De Witzmann

Jürgen Dzick

Bernd Metz

Juergen Dzick

Daniela Petto

Karsten Wermbter

Claudia Booss

Ella Saar

Jutta Reichert

A protective layer having at least one hard-material layer is provided. The hard-material layer is formed from one or more of the following materials metal oxide, metal nitride, metal carbide, metal oxynitride, metal carbonitride, and metal oxycarbonitride. The hard-material layer has laterally closely cohesive, crystalline columns which grow perpendicular to the surface of the body. In some embodiments, the crystalline columns have a lateral dimension which is on average less than 1 &#x3bc;m, preferably less than 200 nm, and which predominantly has crystal orientations which, in the case of columnar growth, have little tendency to widen out, the surface roughness of the hard-material layer having an Rvalue of less than 50 nm, preferably less than 20 nm.

Protective layer for a body, and process and arrangement for producing protective layers

The cleaning-friendly article, such as a household kitchen appliance, which is suitable for heating food and/or directly connected with this unit, has a suitable long-lasting or permanent easily cleaned coating on its surfaces that are accessible to dirt. In order to provide this easily cleaned coating a mixture is applied to these surfaces, which contains a hydrolyzable, network-forming gel and a hydrophobic substance. The gel is preferably formed from metal oxides. such as SiO, AlO, FeO, InO, SnO, ZrO, BOand/or TiO. The hydrophobic substance is preferably chemically combined with the gel network. The hydrophobic substance preferably includes pre-condensed fluoroalkyl-silanes.

Cleaning-friendly apparatus with an easily cleanable, heat-resistant surface coating

A ceramic toner which is transferable to a high-temperature resistant glass, glass ceramic or ceramic substrate by electrophotographic printing and which can be fired in a subsequent temperature process, containing color pigment particles in addition to special glass flow particles. According to this invention, the ceramic toner has a thermoplastic synthetic matrix which melts in a homogeneous manner on the substrate within a temperature range of 100&#xb0; C.&#x2013;400&#xb0; C. and which, within the temperature range of 300&#xb0; C.&#x2013;500&#xb0; C., vaporizes in an almost residue-free manner and/or decomposes in order to obtain a toner which can be transferred especially in a direct printing mode and which has almost no synthetic matrix residue after firing.

Ceramic toner for electro-photographic printing

The cook top is divided into at least one cold zone and cooking zones heatable by radiant heating elements under the cooking zones. The cook top includes a transparent, colorless glass ceramic or glass plate and a non-ceramic underside layer or layers on the underside of the plate. The upper side of the glass ceramic or glass plate is free of any decoration or layer, thus providing a cooking surface having improved smoothness for easy cleaning. The non-ceramic underside layer is permeable to infrared radiation in the cooking zones and is a color-imparting decoration. The underside layer, at least in cooking zones, has transmission properties for visible light such that the radiant heating elements are not visible from above, at least when they are not in a switched-on state.

Cook-top

The invention discloses a method of producing a light-scattering layer on a transparent body, in particular consisting of glass or a glass ceramic. The light-scattering layer is produced by thermal spraying a material such as aluminum oxide, titanium oxide etc. onto a surface of the preheated body with a maximum layer thickness of 100 micrometers. The method is particularly suited for preparing light-scattering layers on glass ceramic cooktops.

Method of producing a light-scattering layer on a glass or glass ceramic body

The invention relates to lead- and cadmium-free glass for glazing, enamelling and decorating glasses or glass-ceramics which have a low coefficient of thermal expansion of less than 2&times;10 /K, having the composition (in % by weight) 0-6 Li O, 0-5 Na O, 0 to less than 2 K O, where the sum Li O&plus;K &plus;Na O is between 2 and 12, 0-4 MgO, 0-4 CaO, 0-4 SrO, 0-1 BaO, 0-4 ZnO, 3 to less than 10 Al O , 13-23 B O , 50-65 SiO , 0-4 TiO , 0-4 ZrO and 0-4 F, as replacement for oxygen and containing up to 30% by weight of a pigment which is resistant at the firing temperature, where the glass is suitable for glazing, enamelling and decoration in both primary and secondary firing, and both the full-area and sparse glaze, enamel or decoration layers have low abrasion susceptibility after firing, and it relates to processes for the production of a glass-ceramic coated therewith.

Cooking surface for cooking food having a glass ceramic surface with a glass coating thereon

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Burrweiler, Germany

Cora Krause