Title:
PREPARATION METHOD FOR SUPERFINE HIGH DISPERSION SILVER-TUNGSTEN ELECTRICAL CONTACT MATERIAL
Document Type and Number:
WIPO Patent Application WO/2019/072240
Kind Code:
A1
Abstract:
A preparation method for a superfine high dispersion silver-tungsten electrical contact material: premixing spherical foam tungsten powder and an activated element, mixing with a part of silver powder to prepare a framework powder, forming a framework of a certain porosity by means of initial pressure, performing vacuum sintering, and performing silver infiltration to obtain a compact superfine high dispersion silver-tungsten alloy. In the high evenness silver-tungsten electrical contact material prepared by means of the method, the two-phase grains of base silver and high melting point tungsten are fine and are distributed interactively and dispersively, while the components and morphology within each micro-area range of a contact surface change slightly during an arc erosion process, thus representing high and reliable arc burning performance. The process for the method is simple and is suitable for mass production, and the prepared product may be widely used in circuit breakers and contactors.
More Like This:
| JPH0689420 | [Title of Invention] Electrical Contact Material |
| JP2006283076 | DUAL PHASE ALLOY FOR SEPARATING/REFINING HYDROGEN |
| JPS61109272 | SLIDE CONTACT UNIT |
Inventors:
ZHANG XIUFANG (CN)
WAN DAI (CN)
WANG HENG (CN)
YANG CHANGLIN (CN)
LI JIE (CN)
YAN XIAOFANG (CN)
HUANG WENMING (CN)
HUANG ZHONG (CN)
BAI XIAOPING (CN)
LIN WANHUAN (CN)
WAN DAI (CN)
WANG HENG (CN)
YANG CHANGLIN (CN)
LI JIE (CN)
YAN XIAOFANG (CN)
HUANG WENMING (CN)
HUANG ZHONG (CN)
BAI XIAOPING (CN)
LIN WANHUAN (CN)
Application Number:
PCT/CN2018/110061
Publication Date:
April 18, 2019
Filing Date:
October 12, 2018
Export Citation:
Assignee:
FUDA ALLOY MAT CO LTD (CN)
International Classes:
C22C5/06; B22F1/00; B22F3/10; C22C1/04
Domestic Patent References:
| WO2014136617A1 | 2014-09-12 |
Foreign References:
| CN107794399A | 2018-03-13 | |||
| CN101805839A | 2010-08-18 | |||
| CN101633986A | 2010-01-27 | |||
| CN106435319A | 2017-02-22 | |||
| US3827883A | 1974-08-06 |
Other References:
FAN, LI: "An Investigation on the Infiltration . Process of Ag-W Series Contact Material", JOURNAL OF SUZHOU INSTITUTE OF SILK TEXTILE TECHNOLOGY, vol. 21, no. 5, 31 October 2001 (2001-10-31), ISSN: 1000-1999
"Refractory metal materials & engineering application", 30 June 2012, ISBN: 978-7-5024-5902-4, article YIN, WEIHONG ET AL.
"Refractory metal materials & engineering application", 30 June 2012, ISBN: 978-7-5024-5902-4, article YIN, WEIHONG ET AL.
Attorney, Agent or Firm:
HANGZHOU HUADING INTELLECTUAL PROPERTY LAW FIRM (CN)
Download PDF:
Previous Patent: SOCKS
Next Patent: GENETICALLY MODIFIED NON-HUMAN ANIMAL WITH HUMAN OR CHIMERIC PD-1
Next Patent: GENETICALLY MODIFIED NON-HUMAN ANIMAL WITH HUMAN OR CHIMERIC PD-1