Abstract: Disclosed is a thin dielectric inorganic layer overlaying a substrate, and having a thickness of .ltoreq. about 20 nm and a defect density of .ltoreq. about 0.6 defects/cm.sup.2 determined by BV measurements.Also disclosed is a method of forming such a layer, according to which a layer having the desired composition and thickness is formed on a substrate, followed by an ion implantation into the substrate through the layer with a dose of .gtoreq. about 10.sup.15 ions/cm.sup.2 and a subsequent anneal at a temperature of .gtoreq. about 500.degree. C. for a predetermined time.
Type:
Grant
Filed:
April 16, 1991
Date of Patent:
August 18, 1992
Inventors:
Wolfgang Euen, Dieter Hagmann, Hans J. Wildau
Abstract: The invention is related to a glass-ceramic article decorated with a ceramic baking finish. A SiO.sub.2 layer, about 20-200 nm thick, is placed between the decoration and the glass-ceramic material. The SiO.sub.2 layer can additionally contain, to match the refractive index to the refractive index of the glass-ceramic, up to 66.5 wt % of oxides which change the refractive index, in particular TiO.sub.2, ZrO.sub.2, SnO.sub.2, MgO or Al.sub.2 O.sub.3. In the process to produce the decorated glass ceramic article, the SiO.sub.2 layer is preferably produced according to the known sol-gel process. Preferably, an SiO.sub.2 gel layer, optionally precondensed by a brief thermal treatment, is produced on the still-vitreous article. The decoration is applied to this gel layer and afterward the vitreous article is subjected to ceramization. The SiO.sub.2 -gel layer is converted into an SiO.sub.2 layer, and the ceramic color of the decoration is baked-in. The SiO.sub.
Type:
Grant
Filed:
November 5, 1990
Date of Patent:
August 11, 1992
Assignee:
Schott Glaswerke
Inventors:
Paul Hinz, Helmut Dislich, Herwig Scheidler, Gerhard Weber
Abstract: A composite ceramic and metal article having a thermal insulating component formed of single phase magnesium stabilized aluminum titanate and an in situ cast structural component formed of a high melting temperature metallic material. The composite article is particularly useful as exhaust port and manifold structures in internal combustion engines.
Abstract: A final rinse for a phosphatized metal surface includes a phosphoric acid solution including aluminum chlorohydrate. The aluminum chlorohydrate solution is applied at a concentration of about 100 to about 1500 ppm at a pH of 3 to about 4.5. The pH is obtained by controlling the concentration of the phosphoric acid. This is preferably used to coat previously phosphatized metal surfaces such as iron, steel, aluminum and galvanize.
Type:
Grant
Filed:
February 28, 1991
Date of Patent:
July 7, 1992
Assignee:
Diversey Corporation
Inventors:
Thomas C. Tesdahl, Charles Ficker, Michael Askren
Abstract: A conductive film of crystalline bismuth mixed alkaline earth oxide containing silver is disclosed. A process for promoting the growth of crystalline bismuth mixed alkaline earth oxide grains by incorporating silver prior to sintering is also disclosed.
Type:
Grant
Filed:
July 17, 1991
Date of Patent:
June 2, 1992
Assignee:
Eastman Kodak Company
Inventors:
John A. Agostinelli, Liang-sun Hung, Jose M. Mir
Abstract: A thermal head obtained by calcining a mixed material comprising at least ruthenium oxide particles having specific surface area of 10 to 45 m.sup.2 /g and a particle size of 1 .mu.m as the upper limit value of particle size distribution, glass fine particles and a dispersant which disperses these fine particles and disappears by calcining can reduce scattering of resistance values and give high image quality at thermal printing.
Abstract: A molten metal filter is disclosed having a carbon or carbon-thermite coating that reduces thermal shock to the filter, and protects the filter from corrosion from the metal or components and impurities in the metal, and prevents metal from freezing in the filter. A molten metal assembly suitable for casting molten metal is disclosed which comprises a filter for molten metal and means for molten metal flow passage leading through the filter. The means have surfaces defining a molten metal path. The filter has a coating of carbon or carbon in intimate contact with a thermite material on the surface of the filter. A process is disclosed for filtering molten metal which comprises passing molten metal through the above described coated filter.
Type:
Grant
Filed:
June 22, 1990
Date of Patent:
April 14, 1992
Assignee:
Corning Incorporated
Inventors:
J. Paul Day, Timothy V. Johnson, Ronald D. Quinn