Ppg Industries, Inc.

Ppg Industries Ohio, Inc.

F Howard Gillery

Russell C Criss

James J Finley

Thomas J Waynar

Amorphous metal oxide barrier layers of titanium oxide, zirconium oxide and zinc/tin oxide are effective as alkali metal ion barrier layers at thicknesses below 180 Angstroms. The amorphous metal oxide barrier layers are most effective when the density of the layer is equal to or greater than 75% of the crystalline density. The barrier layers prevent migration of alkali metal ions such as sodium ions from glass substrates into a medium e.g. electrolyte of a photochromic cell, liquid material of a liquid crystal display device contacting the glass surface and a photocatalytic coating. The properties of the medium, particularly electroconductive metal oxide coatings, are susceptible to deterioration by the presence of sodium ions migrating from the glass.

Alkali metal diffusion barrier layer

Amorphous metal oxide barrier layers of titanium oxide, zirconium oxide and zinc/tin oxide are effective as alkali metal ion barrier layers at thicknesses below 180 Angstroms. The amorphous metal oxide barrier layers are most effective when the density of the layer is equal to or greater than 90% of the crystalline density. The barrier layers prevent migration of alkali metal ions such as sodium ions from glass substrates into a medium e.g. electrolyte of a photochromic cell, liquid material of a liquid crystal display device contacting the glass surface. The properties of the medium, particularly electroconductive metal oxide coatings, are susceptible to deterioration by the presence of sodium ions migrating from the glass.

A heat processable metallic appearing coated article is prepared by coating a glass substrate with a metal-containing film such as chromium or titanium nitride, which ordinarily oxidizes at high temperature, and overcoating with a protective layer of a different metal which forms a dense oxide surface layer. The coated article is subjected to high temperature processing such as bending without losing its metallic appearance to oxidation.

Heat processable metallic vacuum coatings

A method for improving the adhesion between metal and metal oxide films and an improved multiple layer coated article comprising primer layers between metal and metal oxide films are disclosed. Copper containing layers are used as primer layers; for example, copper oxide. The several layers are prepared by sputtering.

High transmittance, low emissivity article and method of preparation

A method for producing visually neutral high transmittance low emissivity coated articles comprising infrared reflective metal and antireflective metal oxide layers and an improved multiple layer coated article produced thereby comprising a high refractive index neutral metal oxide layer between the antireflective metal oxide layer and the infrared reflective metal layer are disclosed.

Neutral reflecting coated articles with sputtered multilayer films of

A method for producing visually neutral high transmittance low emissivity coated articles comprising infrared reflective metal and antireflective metal oxide layers and an improved multiple layer coated article produced thereby, comprising a high refractive index neutral metal oxide layer between the antireflective metal oxide layer and the infrared reflective metal layer are disclosed.

Neutral sputtered films of metal alloy oxides

An electrically heated transparency such as may be employed in a vehicle to provide defrosting, deicing, or defogging capability for the vehicle windows includes a transparent, electroconductive, heat-producing coating, e.g., a film including silver, on a major surface of a transparent sheet, e.g., a glass sheet. First and second bus bars contact the coating along first and second opposite edge portions of the transparency. A pair of electroconductive extensions extend from opposite ends of the second bus bar to a location near the first edge portion along third and fourth edge portions of the transparency, with the extensions being electrically insulated from the coating and the first bus bar. Terminal areas of the extensions and the first bus bar are connected to a power source. The extensions reduce the power losses in the bus bars, produce a more uniform heating pattern, and provide redundancy should one of the extensions fail.

Bus bar arrangement for an electrically heated transparency

A multiple layer high transmittance, low emissivity coated article is disclosed with improved chemical resistance as a result of a protective overcoat of titanium oxide.

Protective coating for low emissivity coated articles

An improved anode system for producing uniform gradient coatings by magnetic sputtering is disclosed, comprising a pair of anode plates asymmetrically designed and positioned along the length of the cathode.

Anode for magnetic sputtering of gradient films

Protective overcoat for low emissivity coated article

A method is disclosed for improving the stability and durability of sputtered metal films such as silver and copper by means of depositing a protective overcoat of a metal such as stainless steel on the exposed surface of the film.

Stainless steel overcoat for sputtered films

A method for improving the adhesion of metal to metal oxide films is disclosed, along with improved coated articles produced thereby. The method comprises depositing between a metal and a metal oxide layer a metal containing layer having affinity for both the metal and metal oxide layers . . .

Sputtered indium oxide films

A metal alloy oxide film and sputtering method for its production are disclosed, as well as a high transmittance, low emissivity coated product employing said metal alloy oxide film as an antireflective film in combination with a metallic film such as silver.

Sputtered films of metal alloy oxides and method of preparation thereof

An improved anode system for producing coatings by magnetic sputtering is disclosed, comprising an anode structure of expanded metal.

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Allison Park, PA, United States of America

F Howard Gillery