EP0040767B1 - Utilisation de matériaux frittés, contenant du nickel-cobalt, pour contacts - Google Patents

Utilisation de matériaux frittés, contenant du nickel-cobalt, pour contacts Download PDF

Info

Publication number
EP0040767B1
EP0040767B1 EP81103722A EP81103722A EP0040767B1 EP 0040767 B1 EP0040767 B1 EP 0040767B1 EP 81103722 A EP81103722 A EP 81103722A EP 81103722 A EP81103722 A EP 81103722A EP 0040767 B1 EP0040767 B1 EP 0040767B1
Authority
EP
European Patent Office
Prior art keywords
nickel
cobalt
relay contacts
electrical relay
sintered materials
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
Application number
EP81103722A
Other languages
German (de)
English (en)
Other versions
EP0040767A3 (en
EP0040767A2 (fr
Inventor
Horst Prof. Dr. Schreiner
Reinhard Tusche
Sjouke Dipl.-Ing. Zijlstra
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0040767A2 publication Critical patent/EP0040767A2/fr
Publication of EP0040767A3 publication Critical patent/EP0040767A3/de
Application granted granted Critical
Publication of EP0040767B1 publication Critical patent/EP0040767B1/fr
Expired 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

Definitions

  • the invention relates to the use of a sintered material, which consists of 50 to 85% nickel and 50 to 15% cobalt, as a material for electrical relay contacts.
  • a small material migration is required for relay contact materials, since the switching function can be disturbed by mountain and valley formation and the relays fail as a result.
  • Another requirement is a small contact resistance.
  • silver-containing contact materials sulfide layers cause an unfavorable increase in the contact resistance values.
  • palladium alloys were used, which form significantly fewer sulfide layers on the contact surface and thus have a cheaper, lower contact resistance.
  • the invention has for its object to find a low-precious metal sintered material as a contact material for electrical relay contacts based on nickel-cobalt, which shows a high hardness and practically no increase in contact resistance under current loads and practically no material migration.
  • This object is achieved according to the invention by using a sintered material which consists of 50 to 85% nickel and 50 to 15% cobalt.
  • nickel-cobalt sintered materials are compositions 85% nickel and 15% cobalt, 75% nickel and 25% cobalt, 65% nickel and 35% cobalt and 50% nickel and 50% cobalt.
  • the sintered material NiCo25 is suitable as a replacement for the previously used, expensive contact material PdCu15 in flasher relays of motor vehicles (hazard lights, direction indicators) as a movable contact piece.
  • PdCu15 in flasher relays of motor vehicles (hazard lights, direction indicators) as a movable contact piece.
  • a switching number of up to 8. 10 5 it shows only very little material migration and sufficiently low contact resistance. Tests under blink lamp loads showed no failures due to jamming, welding or increasing contact resistance.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Contacts (AREA)
  • Powder Metallurgy (AREA)

Claims (5)

1. Utilisation d'un matériau fritté, constitué de 50 à 85% de nickel et de 50 à 15% de cobalt, comme matériau pour des contacts de relais électriques.
2. Utilisation d'un matériau fritté suivant la revendication 1, pour le but qui y est indiqué, qui est constitué de 85% de nickel et de 15% de cobalt.
3. Utilisation d'un matériau fritté suivant la revendication 1, pour le but qui y est indiqué, qui est constitué de 75% de nickel et de 25% de cobalt.
4. Utilisation d'un matériau fritté suivant la revendication 1, pour le but qui y est indiqué, qui est constitué des 65% de nickel et de 35% de cobalt.
5. Utilisation d'un matériau fritté suivant la revendication 1, pour le but qui y est indiqué, qui est constitué de 50% de nickel et de 50% de cobalt.
EP81103722A 1980-05-28 1981-05-14 Utilisation de matériaux frittés, contenant du nickel-cobalt, pour contacts Expired EP0040767B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3020277 1980-05-28
DE19803020277 DE3020277A1 (de) 1980-05-28 1980-05-28 Verwendung von nickel-kobalt-sinterwerkstoffen fuer elektrische relais-kontakte

Publications (3)

Publication Number Publication Date
EP0040767A2 EP0040767A2 (fr) 1981-12-02
EP0040767A3 EP0040767A3 (en) 1982-06-23
EP0040767B1 true EP0040767B1 (fr) 1984-10-24

Family

ID=6103437

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103722A Expired EP0040767B1 (fr) 1980-05-28 1981-05-14 Utilisation de matériaux frittés, contenant du nickel-cobalt, pour contacts

Country Status (6)

Country Link
US (1) US4334929A (fr)
EP (1) EP0040767B1 (fr)
JP (1) JPS5719349A (fr)
BR (1) BR8103299A (fr)
DE (2) DE3020277A1 (fr)
PT (1) PT73073B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5205290A (en) 1991-04-05 1993-04-27 Unger Evan C Low density microspheres and their use as contrast agents for computed tomography
JPH0510686A (ja) * 1991-07-03 1993-01-19 Nkk Corp 電気炉へ投入する原料の予熱方法及び原料予熱用の炉上 ビン
DE102018109262B4 (de) * 2018-04-18 2021-05-12 Seg Automotive Germany Gmbh Verfahren zur Herstellung eines in einem Stromkreis liegenden Bauteils in einem Starterrelais für eine Startvorrichtung für eine Brennkraftmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA892488A (en) * 1968-11-15 1972-02-08 W. Kushnir Bud Two-phase cobalt-iron alloys prepared by powder metallurgy
JPS5719845B2 (fr) * 1972-10-03 1982-04-24
DD115800A1 (fr) * 1974-11-01 1975-10-12
JPS5823453B2 (ja) * 1978-02-27 1983-05-16 ソニー株式会社 磁電変換素子用合金及びその製造方法

Also Published As

Publication number Publication date
JPS5719349A (en) 1982-02-01
BR8103299A (pt) 1982-02-16
PT73073A (de) 1981-06-01
PT73073B (de) 1982-06-03
EP0040767A3 (en) 1982-06-23
DE3020277A1 (de) 1981-12-03
US4334929A (en) 1982-06-15
EP0040767A2 (fr) 1981-12-02
DE3166795D1 (en) 1984-11-29

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