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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9437342 B1

PDFFull Text
Date of Patent:
Sep. 06, 2016

Filed:

Mar. 29, 2013

Method for preparing silver-based electrical contact material

Applicant:

Schneider Electric Industries Sas, Rueil-Malmaison, FR;

Inventors:

Nan Liu, Shanghai, CN;

Binyuan Zhao, Shanghai, CN;

Yijian Lai, Shanghai, CN;

Assignee:

SCHNEIDER ELECTRIC INDUSTRIES SAS, Rueil-Malmaison, FR;

Attorney:

Locke Lord LLP

Primary Examiner:

Mark Kopec

Int. Cl.
CPC ...
H01B 1/02 (2006.01); C01B 31/00 (2006.01); H01B 1/04 (2006.01); C01B 31/06 (2006.01); B22F 1/02 (2006.01); C22C 1/05 (2006.01); C22C 5/06 (2006.01); C22F 1/14 (2006.01); H01H 1/023 (2006.01); H01H 1/027 (2006.01); H01H 11/04 (2006.01); B22F 9/24 (2006.01);
U.S. Cl.
CPC ...
H01B 1/04 (2013.01); B22F 1/02 (2013.01); B22F 9/24 (2013.01); C01B 31/06 (2013.01); C22C 1/05 (2013.01); C22C 5/06 (2013.01); C22F 1/14 (2013.01); H01B 1/02 (2013.01); H01H 1/023 (2013.01); H01H 1/027 (2013.01); H01H 11/04 (2013.01); B22F 2304/056 (2013.01); B22F 2304/058 (2013.01); B22F 2304/10 (2013.01); B22F 2998/10 (2013.01); H01H 11/048 (2013.01); H01H 2300/036 (2013.01);
Abstract

The present invention relates to a new method for preparing a silver-based electrical contact material, comprising following steps of: (a) providing a carbonaceous mesophase solution; (b) adding a silver source into the carbonaceous mesophase solution and stirring to obtain a compound; (c) removing a solvent from the compound to obtain a solid; (d) performing a heat treatment on the solid, and obtaining a silver-based electrical contact material. The silver source is silver powder prepared by means of a chemical method. By means of the method, a uniform carbonaceous coating on silver is implemented, the silver is uniformly distributed in a nanometer scale, and a diamond is generated in situ of a material after being sintered. The silver-based electrical contact material processed by means of this method shows an excellent mechanical wear resistance and electrical property.

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