EP0088220A2 - Elément de contact et méthode pour sa fabrication - Google Patents

Elément de contact et méthode pour sa fabrication Download PDF

Info

Publication number
EP0088220A2
EP0088220A2 EP83100717A EP83100717A EP0088220A2 EP 0088220 A2 EP0088220 A2 EP 0088220A2 EP 83100717 A EP83100717 A EP 83100717A EP 83100717 A EP83100717 A EP 83100717A EP 0088220 A2 EP0088220 A2 EP 0088220A2
Authority
EP
European Patent Office
Prior art keywords
layer
rhodium
contact element
contact
thickness
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.)
Granted
Application number
EP83100717A
Other languages
German (de)
English (en)
Other versions
EP0088220B1 (fr
EP0088220A3 (en
Inventor
Cornelia Dipl.-Phys. Albert
Ulf Dipl.-Phys. Rauterberg
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Publication of EP0088220A2 publication Critical patent/EP0088220A2/fr
Publication of EP0088220A3 publication Critical patent/EP0088220A3/de
Application granted granted Critical
Publication of EP0088220B1 publication Critical patent/EP0088220B1/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/041—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion
    • H01H2011/046—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion by plating

Definitions

  • the invention relates to a contact element which, on a preferably ferromagnetic carrier material, has at least two contact layers electroplated one above the other, of which the outer layer consists of rhodium and the second layer below it consists of a noble metal.
  • the invention also relates to a method for producing such contact elements.
  • the object of the invention is therefore to provide a contact element with a noble metal contact layer and a rhodium coating, which maintains a low contact resistance even at high switching numbers and does not tend to cold welding.
  • this object is achieved in that the noble metal layer consists of silver and the rhodium protective layer has a thickness between 0.2 ⁇ m and 2 ⁇ m.
  • the wafer-rhodium-coated contact elements coated with silver according to the invention do not tend to cold welding or gluing even after a long service life and thereby maintain a largely constant low contact resistance.
  • the contact resistance is even more constant than with correspondingly thin rhodium-plated contact layers made of gold or gold alloys.
  • the contacts according to the invention the additional advantages that result from the use of the contact material silver. Silver is much cheaper than gold and also more resilient as a contact material.
  • rhodium-plated silver contacts are less resistive than pure rhodium contacts. Particularly good results can be achieved with a rhodium layer thickness between 0.3 ⁇ m and 1 ⁇ m.
  • the thickness of the silver layer is advantageously between 1 and 10 microns, preferably 2 to 5 microns. Beneath the silver layer, a nickel layer with a thickness of about 2 to 4 ⁇ m and, if appropriate, a copper layer with a thickness of 2 to 10 ⁇ m are advantageously provided in order to achieve a diffusion barrier between the preferably ferromagnetic carrier material and the silver contact layer.
  • Table 1 shows the development of the contact resistance for the different contact layers:
  • the same batches as in Table 1 were used to investigate the tendency to stick (cold sweat).
  • the table shows the contact material used in the second column and the number of adhesive contacts in new condition in the third column.
  • the term “adhesive” or “adhesive contact” was defined in such a way that the response value of the relay is increased by 15% or more compared to normal operation when it is first activated.
  • an electrolyte is expediently used which is largely free of gloss additives and wetting agents and which is advantageously deposited using wave plating technology.
  • the rhodium layer which expediently has a sulfur content of 4 to 7% by weight, is advantageously produced using spray plating technology ("jet plating"). This allows. achieve the layer thickness of the protective layer particularly precisely. It is also advantageous to anneal the contact element after the contact layers have been applied.

Landscapes

  • Contacts (AREA)
  • Manufacture Of Switches (AREA)
  • Electroplating Methods And Accessories (AREA)
EP83100717A 1982-01-29 1983-01-26 Elément de contact et méthode pour sa fabrication Expired EP0088220B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3203037A DE3203037C2 (de) 1982-01-29 1982-01-29 Kontaktelement und Verfahren zu dessen Herstellung
DE3203037 1982-01-29

Publications (3)

Publication Number Publication Date
EP0088220A2 true EP0088220A2 (fr) 1983-09-14
EP0088220A3 EP0088220A3 (en) 1985-05-15
EP0088220B1 EP0088220B1 (fr) 1987-06-03

Family

ID=6154317

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83100717A Expired EP0088220B1 (fr) 1982-01-29 1983-01-26 Elément de contact et méthode pour sa fabrication

Country Status (3)

Country Link
EP (1) EP0088220B1 (fr)
JP (1) JPS58133717A (fr)
DE (2) DE3203037C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0227972A1 (fr) * 1985-12-06 1987-07-08 Siemens Aktiengesellschaft Elément de contact pour contacts interrupteurs électriques

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3813142A1 (de) * 1988-04-20 1989-11-09 Duerrwaechter E Dr Doduco Bandfoermiges oder plattenfoermiges halbzeug fuer elektrische kontakte
DE19530512C1 (de) * 1995-08-18 1996-10-17 Siemens Ag Elektrisches Schichtkontaktelement, Halbzeug für Schichtkontaktelemente und Verfahren zu seiner Herstellung
RU2218627C2 (ru) * 2001-08-20 2003-12-10 ОАО "Рязанский завод металлокерамических приборов" Контактное покрытие для магнитоуправляемых герметизированных контактов и способ нанесения контактного покрытия

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1802932B2 (de) * 1968-10-14 1974-11-14 W.C. Heraeus Gmbh, 6450 Hanau Verfahren zur Herstellung eines elektrischen Schaltkontaktes
DE2038929B2 (de) * 1969-08-29 1978-03-16 N.V. Philips' Gloeilampenfabrieken, Eindhoven (Niederlande) Kontakt für eine Schaltvorrichtung der Nachrichtentechnik
DE2442212A1 (de) * 1974-09-04 1976-03-25 Licentia Gmbh Verfahren zur haftfesten galvanischen beschichtung von kontaktwerkstoffen mit rhodium
GB1517702A (en) * 1974-09-19 1978-07-12 Fujitsu Ltd Electrical contact
JPS5913811B2 (ja) * 1976-11-18 1984-04-02 富士通株式会社 スイツチ可動体の製造方法
JPS54129359A (en) * 1978-03-30 1979-10-06 Nippon Electric Co Lead switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0227972A1 (fr) * 1985-12-06 1987-07-08 Siemens Aktiengesellschaft Elément de contact pour contacts interrupteurs électriques

Also Published As

Publication number Publication date
DE3203037C2 (de) 1984-03-08
EP0088220B1 (fr) 1987-06-03
JPS58133717A (ja) 1983-08-09
EP0088220A3 (en) 1985-05-15
DE3203037A1 (de) 1983-08-18
DE3371958D1 (en) 1987-07-09

Similar Documents

Publication Publication Date Title
DE19747756C2 (de) Klemmenmaterial und Anschlußklemme
DE69414929T2 (de) Leiterrahmen für eine integrierte Schaltungsanordnung
DE60200154T2 (de) Metallischer Gegenstand mit mehrlagigem Belag
DE1965546C3 (de) Halbleiterbauelement
DE60015686T2 (de) Beschichteter Metallartikel mit mehrlagiger Oberflächenbeschichtung für Porositätsverminderung
DE69023563T2 (de) Elektrischer Kontakt.
DE69207384T2 (de) Haltbare Beschichtung für elektrische Steckkontakte
DE102006017042B4 (de) Zuleitungsrahmen für ein Halbleiterbauteil
DE112014005145B4 (de) Plattenanschluss, Herstellungsverfahren hierfür und Plattenverbinder
DE69313725T2 (de) Verfahren zur Herstellung eines PTC-Thermistors
DE10152029A1 (de) Schiebekontakt-Detektor
EP0604710B1 (fr) Corps de contact électrique
DE3838971C2 (fr)
DE3312713A1 (de) Silberbeschichtete elektrische materialien und verfahren zu ihrer herstellung
WO2008014866A1 (fr) Procédé de fabrication d'un thermomètre
DE68919536T2 (de) Vakuumschalterkontakte und Verfahren zur Herstellung derselben.
EP0088220B1 (fr) Elément de contact et méthode pour sa fabrication
EP1047523B1 (fr) Procede de production d'un substrat exempt de plomb
DE3118342C2 (de) Wärmeaufzeichnungskopf und Verfahren zu seiner Herstellung
DE10157320A1 (de) Verfahren zum Herstellen von Mikroschleifkontakten
DE3434627A1 (de) Elektrischer gleitkontakt, insbesondere fuer kommutierungssysteme
AT402436B (de) Gleitschicht auf kupferbasis
DE4013627A1 (de) Kontaktelement fuer elektrische schaltkontakte
DE3635692C1 (en) Composite material for plug contacts or sliding contacts
EP0058761A2 (fr) Cadre de montage pour dispositifs électriques encapsulés en résine synthétique

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH DE FR GB LI

17P Request for examination filed

Effective date: 19841213

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): CH DE FR GB LI

17Q First examination report despatched

Effective date: 19860701

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB LI

REF Corresponds to:

Ref document number: 3371958

Country of ref document: DE

Date of ref document: 19870709

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19920122

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19920325

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19920422

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19921222

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19930131

Ref country code: CH

Effective date: 19930131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19930930

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19931001

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19940126

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19940126