Schott Ag

Schott Glas

Schott Corporation

Falk Gabel

Bernd Schultheis

Evelin Weiss

Friedrich Siebers

Michael Bug

Thoralf Johansson

Christian Henn

Otmar Becker

Roland Dudek

Bernd Hoppe

Hauke Esemann

Roland Leroux

Michael Kluge

Bernd Ruedinger

Gerhard Hahn

Helga Goetz

Friedrich-Georg Schroeder

Veit Luther

Petra Grewer

Uwe Martens

Jan-Peter Ortmann

Christian Roos

Thomas Schuler

Wolfgang Schmidbauer

Matthias Bockmeyer

Inka Henze

Meike Schneider

Oliver Hochrein

Ulrich Fotheringham

Dietmar Wennemann

Ulrich Schiffner

Harald Striegler

Michael Glasenapp

Guenther Siebenhaar

Eveline Rudigier-Voigt

Thomas Zenker

Torsten Gabelmann

Theodore Allen Wegert

Ioannis Kosmas

Klaus Schoenberger

Ulf Hoffmann

Klaus Schönberger

Andreas Hahn

Gerhard Weber

Zachary D Wimmer

Martin Mueller

Niko Schultz

Christian Breitbach

Rüdiger Sprengard

Bernd Rüdinger

Oliver Muehlke

Lorenz Strenge

Friedrich Georg Schroder

Matthias Wolfinger

Thomas Emmerich Maldonado

Ulf Hoffman

Friedrich Georg SCHRÖDER

Elena Aksel

Helga GÖTZ

Günther Siebenhaar

Friedrich-Georg SCHRÖDER

Todd J Gudgel

Sheet-like glass ceramic article are provided that include surfaces with a thickness between the surfaces between 0.5 mm and 1.9 mm and a core. The articles have a first microstructure provided on each of the surfaces and have a second microstructure in the core with a second thickness (d). The first microstructures extend inwardly from the surfaces towards the core and has a first thickness (d). The first microstructure has a difference from the second microstructure selected from a group consisting of: a crystalline phase type, a crystalline phase amount, crystalline phase size distribution, crystalline phase orientation, crystalline phases composition, crystalline inclusion, an amorphous phase type, an amorphous phase percentage amount, an amorphous phase composition, and any combinations thereof. The difference results in a first coefficient of linear thermal expansion of the first microstructure that is smaller than a second coefficient of linear thermal expansion of the second microstructure.

Glass ceramic article, method for producing same, and use thereof

The present disclosure relates to products and methods for modifying the reflection of a light source in a fireplace and other products.

Light reflection modification for fireplaces and other products

A sightglass for a stove is provided that has a substrate made of transparent coloured lithium aluminium silicate glass ceramic. The sightglass has a light transmittance of 0.1% to 50%. Standard illuminant D65 light, after passing through the glass ceramic, at a thickness of 4 mm, has a colour locus in the white region Wdetermined by the following coordinates in the chromaticity diagram CIExyY-2&#xb0;: 

Coloured stove sightglass with colour-neutral transmission characteristics

A highly crystalline transparent, translucent or opaque lithium aluminium silicate (LAS) glass-ceramic which has a proportion of residual glass phase of less than 20% by weight and also the use thereof is described.

Highly crystalline lithium aluminium silicate glass-ceramic and its use

A glass ceramic article is provided so that a reliable coloring with a defined transmittance is ensured. The reliable coloring of the glass ceramic article is based on a high content of iron oxide of more than 0.1 percent by weight which itself has a strongly coloring effect does not further reduce transmittance but rather interacts with vanadium oxide to attenuate the absorption caused by vanadium oxide.

Glass ceramic and method for producing same

A glass ceramic substrate made of a transparent, colored LAS glass ceramic is provided. The glass ceramic has a gradient layer with keatite solid solution and an underlying core with high-quartz solid solution as predominant crystal phase. The keatite solid solution in a depth of 10 &#x3bc;m or greater exceeds 50% of the sum of the high-quartz solid solution proportion and keatite solid solution proportion. The ceramization includes a crystal transformation step, in which the high-quartz solid solution is transformed at a maximum temperature in the range of 910&#xb0; to 980&#xb0; and a time period of between 1 and 25 minutes in part into the keatite solid solution.

Glass ceramic substrate made of a transparent, colored LAS glass ceramic and method for producing it

An LAS-glass for producing a transparent glass-ceramic and an LAS-glass-ceramic having a predetermined chroma C* and a predetermined visually determinable scatter value (S) are provided. The LAS-glass and LAS-glass-ceramic has a process window as large as possible during the nucleus formation process with respect to the residence time in the relevant temperature range for the formation of nuclei.

Glass and glass ceramic

A lithium-containing, transparent glass-ceramic material is provided. The material has low thermal expansion and has an amorphous, lithium-depleted, vitreous surface zone. The zone is at least 50 nm thick on all sides and encloses a crystalline interior, which has high transmission. The material includes a transition region connecting the zone and the interior.

Transparent lithium glass-ceramic material, production and use thereof

A method of manufacturing glass ceramic articles such as glass ceramic plates for cooktops or fireplace windows is provided. The method facilitates the adjustment of a specific hue or a specific absorptivity of the glass ceramic in the visible spectral range. The method is based on the finding that the absorption of light by coloring agents which are appropriate for or present in glass ceramics can be attenuated during the ceramization process by adding substances that have a decoloring effect.

Method for producing a glass ceramic with a predefined transmittance

A method for creating a glass ceramic component having at least one angle is provided, where the angle is formed as a transition between two legs. The angle is made with a bending radius in the range between 30 mm and 200 mm during conversion of the glass plate in a green glass state to the glass ceramic plate under the effects of a deformation tool.

Method for producing angled glass ceramic components

A fireplace is provided that includes a combustion space delimited by a combustion-space lining and accessible through a door or flap. The combustion-space lining is at least partially composed of a ceramic or glass-ceramic material. The fireplace also includes a wall element disposed on a side of the combustion-space lining that faces away from the combustion space so that an intermediate space is formed between the side and the wall element. A heat exchanger or insulating material ca n be positioned in the intermediate space.

Fireplace

The invention relates to a method and to a device for ceramizing green glass in a continuous furnace, with the ceramization being carried out directly on rollers.

Glass ceramic article and method and device for ceramizing glass

A transparent low-colour lithium aluminium silicate (LAS) glass ceramic and the use thereof are provided. The ceramic has an environmentally friendly composition with high-quartz mixed crystals as the main crystal phase. The glass ceramic contains the following components (in wt % on the basis of oxide): TiO1.6-&#x3c;2.5; NdO0.005-0.15; MgO 0.2-1.0; ZnO 1-2.5; CaO+SrO 0-1.5; BaO 0-1.5 with the condition B1: MgO+ZnO&#x3e;CaO+SrO +BaO. In some embodiments, the glass ceramic has a hue c* of less than 5.5, a light transmission Y greater than 81% and has no visually disruptive diffusion.

Transparent low-color lithium aluminum silicate glass ceramic and the use thereof

A glass ceramic as cooktop for induction heating having improved colored display capability and heat shielding is provided. The cooktop includes a transparent, dyed glass ceramic plate having high-quartz mixed crystals as a predominant crystal phase. The glass ceramic contains none of the chemical refining agents arsenic oxide and/or antimony oxide and has a transmittance values greater than 0.4% at at least one wavelength in the blue spectrum between 380 and 500 nm, a transmittance &#x3e;2% at 630 nm, a transmittance of less than 45% at 1600 nm, and a light transmittance of less than 2.5% in the visible spectrum.

Glass ceramic as a cooktop for induction heating having improved colored display capability and heat shielding, method for producing such a cooktop, and use of such a cooktop

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Schlangenbad, Germany

Falk Gabel