# US 10,770,806 B2 · Electrical contact composites and method for producing electrical contact composites

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- Number: US 10,770,806 B2
- Document ID: US10770806B2
- Status: Granted
- Kind: B2
- Application number: 15/799,767
- Filed: 2017-10-31
- Published: 2018-03-01
- Granted: 2020-09-08
- Earliest claimed: 2011-08-09
- Assignees: Saint-Gobain Glass France
- Applicants: Saint-Gobain Glass France
- Inventors: Mitja Rateiczak; Bernhard Reul
- Web page: https://patentgrep.com/patent/US10770806B2

## CPC

- H01R 4/58: characterised by the form or material of the contacting members (H01R4/01 takes precedence)
- B32B 17/10174: {Coatings of a metallic or dielectric material on a constituent layer of glass or polymer}
- B32B 17/1022: {Metallic coatings}
- C23C 4/06: Metallic material
- C23C 24/04: Impact or kinetic deposition of particles
- H05B 3/84: Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
- H01R 4/04: using electrically conductive adhesives
- H05B 2203/016: Heaters using particular connecting means
- Y10T 428/12493: Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04)
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An electrical contact composite is described. The electrical contact composite has a substrate and an electrically conductive coating applied to the substrate, which coating is connected to an electrode. A metal contact element is connected to the electrode, which contact element is used to connect the conductive coating to a current/voltage source. Furthermore, at least one sprayed layer produced by means of a thermal spraying method, in particular gas dynamic cold spray, and is provided with at least one metal and/or metal alloy, the sprayed layer being arranged between the conductive coating and the contact element. The sprayed layer has a coefficient of thermal expansion that is between the coefficients of thermal expansion of the carrier and of the contact element. The sprayed layer can also be used as the electrode for the conductive coating.

## Claims

### Claim 1

An electrical contact composite, comprising, in order:
a flat substrate with an electrically conductive coating applied thereon,
an electrode that is electrically connected to the conductive coating and mechanically connected to the conductive coating by way of a printing method,
a sprayed layer that is produced by a thermal spraying method onto the electrode,
a solder layer; and
a metal contact element that is electrically connected to the electrode and mechanically connected to the sprayed layer by way of the solder layer, the metal contact element serving for electrical connection of the conductive coating to an electrical component,
wherein said sprayed layer comprises at least one metal and/or at least one metal alloy, and
wherein the sprayed layer contains at least one electrically insulating material.

### Claim 2 (depends on 1)

The contact composite according to claim 1, wherein a coefficient of thermal expansion of the sprayed layer is in a range of a middle third of a value range for coefficients of thermal expansion bounded by coefficients of thermal expansion of the flat substrate and the contact element.

### Claim 3 (depends on 2)

The contact composite according to claim 2, wherein the coefficient of thermal expansion of the sprayed layer corresponds at least approximately to a mean value formed from the coefficients of thermal expansion of the flat substrate and the contact element.

### Claim 4 (depends on 1)

The contact composite according to claim 1, wherein the sprayed layer has a layer thickness 2 to 50 times that of the electrode.

### Claim 5 (depends on 1)

The contact composite according to claim 1, wherein the sprayed layer comprises one or a plurality of metals and/or metal alloys, selected from silver, copper, gold, aluminum, sodium, tungsten, brass, iron, chromium, lead, bismuth, titanium, tin, zinc, molybdenum, indium, nickel, platinum, vanadium, cobalt, thallium, and niobium.

### Claim 6 (depends on 1)

An electrical structure with a flat substrate and an electrically conductive coating applied on the flat substrate, the electrical structure comprising at least one electrical contact composite according to claim 1.