Title:
ELECTRIC CONTACT MATERIAL, MANUFACTURING METHOD THEREOF AND ELECTRIC CONTACT
Document Type and Number:
Japanese Patent JP2013224484
Kind Code:
A
Abstract:
To provide an electric contact hardly causing local consumption by extending the life of the electric contact for passing/closing a large electric current.
A contact material is prepared by adding an iron group metal and a boron oxide including Sr, Ca, rare earth element and the like to a Cu(Ag)-W(Mo) electric contact material. For example, by always exposing a lot of boron oxide particles with low work function to a contact material surface, consumption of the electric contact is uniformly caused, and the life of the electric contact can be extended without causing local consumption. Deterioration of sintering and infiltration properties due to addition of the boron oxide is compensated by the iron group metal added to the W (Mo).
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Inventors:
SHIRATANI MASAHARU
BABA TOSHIYUKI
YAMAGUCHI HIROBUMI
MIYAZAKI YASUNORI
ANURA YASUNORI
BABA TOSHIYUKI
YAMAGUCHI HIROBUMI
MIYAZAKI YASUNORI
ANURA YASUNORI
Application Number:
JP2013033082A
Publication Date:
October 31, 2013
Filing Date:
February 22, 2013
Export Citation:
Assignee:
NIPPON TUNGSTEN
International Classes:
C22C27/04; B22F3/11; B22F3/26; B22F7/00; C22C1/04; C22C1/10; C22C19/03; C22C19/07; C22C38/00; H01H1/021; H01H1/023; H01H1/025; H01H11/04
Domestic Patent References:
| JPS6383242A | 1988-04-13 | |||
| JP2004358623A | 2004-12-24 | |||
| JPS5184496A | 1976-07-23 | |||
| JPS5184497A | 1976-07-23 | |||
| JPS5344424A | 1978-04-21 | |||
| JPH06507447A | 1994-08-25 |
Attorney, Agent or Firm:
Seiji Okuda