EP0227972A1 - Elément de contact pour contacts interrupteurs électriques - Google Patents

Elément de contact pour contacts interrupteurs électriques Download PDF

Info

Publication number: EP0227972A1
Authority: EP; European Patent Office
Prior art keywords: layer; thickness; contact element; contact; element according
Prior art date: 1985-12-06
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

EP86116790A

Other languages

German (de)

English (en)

Other versions

EP0227972B1 (fr

Inventor

Klaus-Dieter Heppner

Josef Dr.Rer.Nat. Weiser

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.)

1985-12-06

Filing date

1986-12-03

Publication date

1987-07-08

1986-12-03 Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG

1987-07-08 Publication of EP0227972A1 publication Critical patent/EP0227972A1/fr

1989-08-02 Application granted granted Critical

1989-08-02 Publication of EP0227972B1 publication Critical patent/EP0227972B1/fr

Status Expired legal-status Critical Current

Links

PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 18
PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 11
229910052737 gold Inorganic materials 0.000 claims abstract description 11
239000010931 gold Substances 0.000 claims abstract description 11
229910052759 nickel Inorganic materials 0.000 claims abstract description 11
229910052703 rhodium Inorganic materials 0.000 claims abstract description 11
239000010948 rhodium Substances 0.000 claims abstract description 11
MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims abstract description 11
229910052709 silver Inorganic materials 0.000 claims abstract description 10
239000004332 silver Substances 0.000 claims abstract description 10
229910000990 Ni alloy Inorganic materials 0.000 claims abstract description 5
239000010953 base metal Substances 0.000 claims abstract description 3
BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 8
238000009713 electroplating Methods 0.000 claims description 8
238000000034 method Methods 0.000 claims description 3
239000011248 coating agent Substances 0.000 abstract description 3
238000000576 coating method Methods 0.000 abstract description 3
KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 abstract 2
229910001252 Pd alloy Inorganic materials 0.000 abstract 1
239000010970 precious metal Substances 0.000 description 3
229910000510 noble metal Inorganic materials 0.000 description 2
BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
206010009866 Cold sweat Diseases 0.000 description 1
229910052697 platinum Inorganic materials 0.000 description 1

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
- H01H1/0201—Materials for reed contacts

Definitions

the invention relates to a contact element for electrical switch contacts, in particular a contact tongue for electromagnetic relays, a three-layer contact pad being galvanically applied to a base made of base metal, the outermost layer of which consists of rhodium and the middle layer of which is made of silver or gold.
Such a contact element is known from DE-PS 32 03 037, in which a silver layer and a rhodium layer are applied over a nickel layer. Such contact surfaces have a low tendency to cold sweat.
the same document also describes the use of gold contact layers with a rhodium coating as known. In general, however, previously known multilayer pads made of precious metals are either relatively expensive or can only be used in a limited range.
the object of the invention is to provide a switching contact of the type mentioned at the outset, which has the smallest possible proportion of expensive precious metals, but can be used over the widest possible range of switching powers.
the contact should be reliable and can be used with a long service life both with very small and with very high switching currents and switching voltages.
this object is achieved in that the bottom layer of the contact pad made of a palladium-nickel alloy with a nickel content between There is 10% and 40% and a thickness between 2 ⁇ m and 10 ⁇ m, that the middle layer, consisting of gold or silver, has a thickness below 1 ⁇ m and that the outer rhodium layer has a thickness between 0.4 ⁇ m and 1 ⁇ m owns.
the individual contact layers can be applied in the specified, relatively small layer thicknesses with good quality, so that the proportion of noble metal in the overall contact layer is still relatively low.
the main part is made up of the palladium-nickel alloy, which is still relatively inexpensive compared to pure precious metals such as gold, rhodium and platinum.
the palladium-nickel layer expediently has a nickel content of between 20% and 30%, preferably of 25% and a thickness of 4 to 6 ⁇ m, preferably of 5 ⁇ m.
the gold or silver layer has a thickness between 0.1 and 1 ⁇ m, preferably of 0.5 ⁇ m.
the rhodium layer preferably also has a thickness of 0.5 ⁇ m.
contact layers are applied galvanically, wherein selective electroplating methods are preferably used, which are known, for example, under the terms nozzle electroplating or jetplating, brush electroplating and laser electroplating. With these methods, the contact layers are applied only where they are needed, so that a particularly economical use of the noble metals is possible in this way.

Landscapes

Electroplating Methods And Accessories (AREA)
Contacts (AREA)

EP19860116790 1985-12-06 1986-12-03 Elément de contact pour contacts interrupteurs électriques Expired EP0227972B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3543238		1985-12-06
DE3543238		1985-12-06

Publications (2)

Publication Number	Publication Date
EP0227972A1 true EP0227972A1 (fr)	1987-07-08
EP0227972B1 EP0227972B1 (fr)	1989-08-02

Family

ID=6287858

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19860116790 Expired EP0227972B1 (fr)	1985-12-06	1986-12-03	Elément de contact pour contacts interrupteurs électriques

Country Status (2)

Country	Link
EP (1)	EP0227972B1 (fr)
DE (1)	DE3664833D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE19530512C1 (de) *	1995-08-18	1996-10-17	Siemens Ag	Elektrisches Schichtkontaktelement, Halbzeug für Schichtkontaktelemente und Verfahren zu seiner Herstellung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2442212A1 (de) *	1974-09-04	1976-03-25	Licentia Gmbh	Verfahren zur haftfesten galvanischen beschichtung von kontaktwerkstoffen mit rhodium
EP0088220A2 (fr) *	1982-01-29	1983-09-14	Siemens Aktiengesellschaft	Elément de contact et méthode pour sa fabrication

1986
- 1986-12-03 DE DE8686116790T patent/DE3664833D1/de not_active Expired
- 1986-12-03 EP EP19860116790 patent/EP0227972B1/fr not_active Expired

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2442212A1 (de) *	1974-09-04	1976-03-25	Licentia Gmbh	Verfahren zur haftfesten galvanischen beschichtung von kontaktwerkstoffen mit rhodium
EP0088220A2 (fr) *	1982-01-29	1983-09-14	Siemens Aktiengesellschaft	Elément de contact et méthode pour sa fabrication

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE19530512C1 (de) *	1995-08-18	1996-10-17	Siemens Ag	Elektrisches Schichtkontaktelement, Halbzeug für Schichtkontaktelemente und Verfahren zu seiner Herstellung

Also Published As

Publication number	Publication date
EP0227972B1 (fr)	1989-08-02
DE3664833D1 (en)	1989-09-07

Legal Events

Date	Code	Title	Description
1987-05-23	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
1987-07-08	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): CH DE FR GB IT LI SE
1987-11-19	17P	Request for examination filed	Effective date: 19870904
1989-01-25	17Q	First examination report despatched	Effective date: 19881209
1989-06-17	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1989-08-02	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): CH DE FR GB IT LI SE
1989-09-07	REF	Corresponds to:	Ref document number: 3664833 Country of ref document: DE Date of ref document: 19890907
1989-10-06	ET	Fr: translation filed
1989-10-26	ITF	It: translation for a ep patent filed
1989-11-15	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
1990-05-31	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1990-05-31	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1990-07-18	26N	No opposition filed
1990-12-31	ITTA	It: last paid annual fee
1995-01-31	EAL	Se: european patent in force in sweden	Ref document number: 86116790.6
1995-12-21	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: SE Payment date: 19951221 Year of fee payment: 10
1996-03-20	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: CH Payment date: 19960320 Year of fee payment: 10
1996-11-18	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19961118 Year of fee payment: 11
1996-12-04	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Effective date: 19961204
1996-12-23	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19961223 Year of fee payment: 11
1996-12-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: LI Effective date: 19961231 Ref country code: CH Effective date: 19961231
1997-08-15	REG	Reference to a national code	Ref country code: CH Ref legal event code: PL
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1997-12-03	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19971203
1997-12-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19971231
1998-02-20	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 19980220 Year of fee payment: 12
1998-07-22	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 19971203
1998-10-09	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
1999-10-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19991001
2005-12-03	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20051203

Publication	Publication Date	Title
DE3027304C2 (de)	1982-09-30	Elektrischer Mehrlagenkontakt
DE2604291A1 (de)	1977-08-11	Werkstoffanordnung fuer elektrische schwachstromkontakte
DE3312713A1 (de)	1984-10-11	Silberbeschichtete elektrische materialien und verfahren zu ihrer herstellung
EP0604710B1 (fr)	1999-03-10	Corps de contact électrique
DE1521591B2 (de)	1971-12-16	Verfahren zur bildung einer kontaktflaeche auf einer schalterzunge
DE2038929B2 (de)	1978-03-16	Kontakt für eine Schaltvorrichtung der Nachrichtentechnik
EP0227972B1 (fr)	1989-08-02	Elément de contact pour contacts interrupteurs électriques
DE2438870C3 (de)	1981-11-05	Elektolytkondensator
EP0247541B1 (fr)	1990-10-24	Elément de contact pour contacts interrupteurs électriques
WO2000059055A2 (fr)	2000-10-05	Composant tels que chassis et/ou plaque polaire pour pile a combustible de type pem, a resistance de contact reduite, et procede permettant de diminuer ladite resistance
DE3151557C2 (fr)	1989-08-03
DE4013627A1 (de)	1991-10-31	Kontaktelement fuer elektrische schaltkontakte
EP0088220B1 (fr)	1987-06-03	Elément de contact et méthode pour sa fabrication
DE3434627A1 (de)	1985-06-05	Elektrischer gleitkontakt, insbesondere fuer kommutierungssysteme
DE1564069C2 (de)	1974-07-18	Verbundwerkstoff für elektrische Kontakte
DE4317950A1 (de)	1994-12-01	Beschichtetes Metallband als Halbzeug für elektrische Kontaktstücke und Verfahren zum Aufbringen derartiger Kontaktstücke auf einen Träger
DE2365450A1 (de)	1975-05-15	Silber-metalloxid-werkstoff fuer kontaktzwecke
DE10214973C1 (de)	2003-08-21	Kontaktschichtsystem und Verfahren zu dessen Herstellung
DE3635692C1 (en)	1987-09-17	Composite material for plug contacts or sliding contacts
DE2506145C3 (fr)	1977-08-04
DE2909383C2 (de)	1983-08-25	Quecksilberkontakt
DE2439315C3 (de)	1978-11-09	Edelmetallkontakte für Gleichstromschaltgeräte, insbesondere für Relais in Kraftfahrzeugen
DE1764233C2 (de)	1977-06-16	Elektrischer Schwachstromkontakt
EP0251204A1 (fr)	1988-01-07	Contact électrique
DE3125973A1 (de)	1983-01-20	Verfahren zur herstellung eines schwachstromkontaktstueckes

EP0227972A1 - Elément de contact pour contacts interrupteurs électriques - Google Patents

Info

Links

Classifications

Definitions

Landscapes

Applications Claiming Priority (2)

Publications (2)

Family

ID=6287858

Family Applications (1)

Country Status (2)

Cited By (1)

Citations (2)

Patent Citations (2)

Cited By (1)

Also Published As

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