Title:
Ag-酸化物系電気接点材料の製造方法およびそれによる電気接点材料
Document Type and Number:
Japanese Patent JP5426752
Kind Code:
B2
Abstract:
[Problem] Conventional Ag-oxide-based electrical contact materials that contain Zn are low in metal formability, which is indispensable to the production of an electrical contact, and are difficult to be rolled. Consequently, conventional Ag-oxide-based electrical contact materials containing Zn have not been put into practical use. [Solution] A method for producing an Ag-oxide-based electrical contact material, wherein an Ag alloy containing Zn is subjected to internal oxidation under the conditions of an oxygen partial pressure of 0.5-5.0 MPa and an oxidation temperature of 600-900°C so that a plurality of fine cracks are generated at grain boundaries, and fine pieces and/or a powder obtained by pulverizing the internally oxidized Ag alloy is formed into a desired shape by compression molding, and then fired and extruded into a predetermined shape.
Inventors:
Hideo Kumida
Shinya Sanada
Shinya Sanada
Application Number:
JP2012501070A
Publication Date:
February 26, 2014
Filing Date:
July 28, 2011
Export Citation:
Assignee:
Tokuriki Head Office Co., Ltd.
International Classes:
C22C1/05; C22C5/06; H01H1/023; H01H11/04; B22F3/24
Domestic Patent References:
| JP2009030099A | ||||
| JP59067346A | ||||
| JP58152315A |
Foreign References:
| WO2000065623A1 |
Attorney, Agent or Firm:
Takaji Kanakura