DE3872338D1 - POWDER METALLICALLY PRODUCED MATERIAL FOR ELECTRICAL CONTACTS MADE OF SILVER WITH GRAPHITE AND METHOD FOR THE PRODUCTION THEREOF. - Google Patents

POWDER METALLICALLY PRODUCED MATERIAL FOR ELECTRICAL CONTACTS MADE OF SILVER WITH GRAPHITE AND METHOD FOR THE PRODUCTION THEREOF.

Info

Publication number
DE3872338D1
DE3872338D1 DE8888116746T DE3872338T DE3872338D1 DE 3872338 D1 DE3872338 D1 DE 3872338D1 DE 8888116746 T DE8888116746 T DE 8888116746T DE 3872338 T DE3872338 T DE 3872338T DE 3872338 D1 DE3872338 D1 DE 3872338D1
Authority
DE
Germany
Prior art keywords
graphite
electrical contacts
powder
metallically
silver
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE8888116746T
Other languages
German (de)
Inventor
Roland Dr Dipl Ing Michal
Karl E Dr Dipl Phys Saeger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Doduco Contacts and Refining GmbH
Original Assignee
Doduco GmbH and Co KG Dr Eugen Duerrwaechter
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Doduco GmbH and Co KG Dr Eugen Duerrwaechter filed Critical Doduco GmbH and Co KG Dr Eugen Duerrwaechter
Priority to DE8888116746T priority Critical patent/DE3872338D1/en
Application granted granted Critical
Publication of DE3872338D1 publication Critical patent/DE3872338D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H01H1/027—Composite material containing carbon particles or fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/30—Making metallic powder or suspensions thereof using chemical processes with decomposition of metal compounds, e.g. by pyrolysis
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/0084—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ carbon or graphite as the main non-metallic constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C5/00—Alloys based on noble metals
    • C22C5/06—Alloys based on silver
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H01H1/023—Composite material having a noble metal as the basic material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Composite Materials (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Contacts (AREA)
  • Powder Metallurgy (AREA)
  • Conductive Materials (AREA)

Abstract

Powder metallurgically produced material for electrical contacts consists of Ag, 2-7 wt.% graphite and 0.5-50 wt.% one or more non-precious metal to increase strength. The particle size of the non-precious metal is max. 5 x 10 power -10 mm3 and it is uniformly dispersed in the material.
DE8888116746T 1987-10-09 1988-10-10 POWDER METALLICALLY PRODUCED MATERIAL FOR ELECTRICAL CONTACTS MADE OF SILVER WITH GRAPHITE AND METHOD FOR THE PRODUCTION THEREOF. Expired - Lifetime DE3872338D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8888116746T DE3872338D1 (en) 1987-10-09 1988-10-10 POWDER METALLICALLY PRODUCED MATERIAL FOR ELECTRICAL CONTACTS MADE OF SILVER WITH GRAPHITE AND METHOD FOR THE PRODUCTION THEREOF.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873734178 DE3734178A1 (en) 1987-10-09 1987-10-09 POWDER METALLICALLY PRODUCED MATERIAL FOR ELECTRICAL CONTACTS MADE OF SILVER WITH GRAPHITE AND METHOD FOR THE PRODUCTION THEREOF
DE8888116746T DE3872338D1 (en) 1987-10-09 1988-10-10 POWDER METALLICALLY PRODUCED MATERIAL FOR ELECTRICAL CONTACTS MADE OF SILVER WITH GRAPHITE AND METHOD FOR THE PRODUCTION THEREOF.

Publications (1)

Publication Number Publication Date
DE3872338D1 true DE3872338D1 (en) 1992-07-30

Family

ID=6337969

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19873734178 Withdrawn DE3734178A1 (en) 1987-10-09 1987-10-09 POWDER METALLICALLY PRODUCED MATERIAL FOR ELECTRICAL CONTACTS MADE OF SILVER WITH GRAPHITE AND METHOD FOR THE PRODUCTION THEREOF
DE8888116746T Expired - Lifetime DE3872338D1 (en) 1987-10-09 1988-10-10 POWDER METALLICALLY PRODUCED MATERIAL FOR ELECTRICAL CONTACTS MADE OF SILVER WITH GRAPHITE AND METHOD FOR THE PRODUCTION THEREOF.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE19873734178 Withdrawn DE3734178A1 (en) 1987-10-09 1987-10-09 POWDER METALLICALLY PRODUCED MATERIAL FOR ELECTRICAL CONTACTS MADE OF SILVER WITH GRAPHITE AND METHOD FOR THE PRODUCTION THEREOF

Country Status (4)

Country Link
EP (1) EP0311134B1 (en)
AT (1) ATE77657T1 (en)
DD (1) DD275421A5 (en)
DE (2) DE3734178A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3806573A1 (en) * 1988-03-01 1989-09-14 Siemens Ag Pair of contacts
DE10318890B4 (en) * 2003-04-17 2014-05-08 Ami Doduco Gmbh Electrical plug contacts and a semi-finished product for their production
CN105648261B (en) * 2016-02-01 2018-02-16 重庆川仪自动化股份有限公司 Silver-based commutator material and preparation method and purposes for high-voltage great-current

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH301201A (en) * 1944-11-14 1954-08-31 Licentia Gmbh Contact material for frequently operated contacts.
GB1059872A (en) * 1963-06-04 1967-02-22 Mitsuo Iwauchi Method for manufacturing electrical material
DE2141409A1 (en) * 1971-08-18 1973-03-01 Ts Ni Awtomobil Nij I Awtomoto METAL-CERAMIC SUBSTANCE FOR ELECTRICAL CONTACTS AND PROCESS FOR ITS PRODUCTION
DE2929630C2 (en) * 1979-07-21 1983-12-15 Dornier System Gmbh, 7990 Friedrichshafen Process for the production of silver powder
US4699763A (en) * 1986-06-25 1987-10-13 Westinghouse Electric Corp. Circuit breaker contact containing silver and graphite fibers

Also Published As

Publication number Publication date
ATE77657T1 (en) 1992-07-15
DE3734178A1 (en) 1989-04-20
DD275421A5 (en) 1990-01-24
EP0311134B1 (en) 1992-06-24
EP0311134A1 (en) 1989-04-12

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: AMI DODUCO GMBH, 75181 PFORZHEIM, DE

8339 Ceased/non-payment of the annual fee