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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 10361039 B1

PDFFull Text
Date of Patent:
Jul. 23, 2019

Filed:

Aug. 10, 2016

Electrode material and method for manufacturing electrode material

Applicant:

Meidensha Corporation, Tokyo, JP;

Inventors:

Keita Ishikawa, Tokyo, JP;

Kenta Yamamura, Numazu, JP;

Kosuke Hasegawa, Numazu, JP;

Shota Hayashi, Tokyo, JP;

Takaaki Furuhata, Shizuoka, JP;

Assignee:

MEIDENSHA CORPORATION, Tokyo, JP;

Attorney:

Foley & Lardner LLP

Primary Examiner:

Truc T Nguyen

Int. Cl.
CPC ...
H01H 33/662 (2006.01); H01H 1/02 (2006.01); B22F 3/26 (2006.01); C22C 1/04 (2006.01); C22C 5/04 (2006.01); C22C 9/00 (2006.01); C22C 9/10 (2006.01); C22C 14/00 (2006.01); C22C 16/00 (2006.01); C22C 25/00 (2006.01); C22C 27/02 (2006.01); C22C 27/04 (2006.01); C22C 27/06 (2006.01); C22C 30/02 (2006.01); H01H 33/664 (2006.01); H01H 11/04 (2006.01);
U.S. Cl.
CPC ...
H01H 1/0206 (2013.01); B22F 3/26 (2013.01); C22C 1/04 (2013.01); C22C 5/04 (2013.01); C22C 9/00 (2013.01); C22C 9/10 (2013.01); C22C 14/00 (2013.01); C22C 16/00 (2013.01); C22C 25/00 (2013.01); C22C 27/02 (2013.01); C22C 27/04 (2013.01); C22C 27/06 (2013.01); C22C 30/02 (2013.01); H01H 11/048 (2013.01); H01H 33/662 (2013.01); H01H 33/664 (2013.01); B22F 2301/20 (2013.01); B22F 2304/10 (2013.01);
Abstract

It is an electrode material that is used as an electrode contact of a vacuum interrupter and that contains one or more parts by weight of a heat-resistant element and one part by weight of Cr, the remainder being Cu and an unavoidable impurity. A part of Cr powder and the heat-resistant element powder are mixed together, and this mixed powder is sintered such that a peak corresponding to Cr element disappears in X-ray diffraction measurement. A solid solution powder obtained by pulverizing a sintered body of the heat-resistant element and Cr obtained by the sintering is mixed with the remaining Cr powder, and this mixed powder is shaped and then sintered. A sintered body obtained by this sintering is infiltrated with Cu.

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