EP0774529A1 - Matériau argent-fer pour contacts de commutateurs électriques - Google Patents

Matériau argent-fer pour contacts de commutateurs électriques Download PDF

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Publication number
EP0774529A1
EP0774529A1 EP96117210A EP96117210A EP0774529A1 EP 0774529 A1 EP0774529 A1 EP 0774529A1 EP 96117210 A EP96117210 A EP 96117210A EP 96117210 A EP96117210 A EP 96117210A EP 0774529 A1 EP0774529 A1 EP 0774529A1
Authority
EP
European Patent Office
Prior art keywords
oxide
silver
iron
weight
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.)
Granted
Application number
EP96117210A
Other languages
German (de)
English (en)
Other versions
EP0774529B1 (fr
Inventor
Wolfgang Dr. Weise
Willi Malikowski
Roger Wolmer
Peter Dr. Braumann
Andreas Koffler
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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Degussa Huels 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 Degussa GmbH, Degussa Huels AG filed Critical Degussa GmbH
Publication of EP0774529A1 publication Critical patent/EP0774529A1/fr
Application granted granted Critical
Publication of EP0774529B1 publication Critical patent/EP0774529B1/fr
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
    • H01H1/023—Composite material having a noble metal as the basic material
    • H01H1/0237—Composite material having a noble metal as the basic material and containing oxides
    • 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
    • C22C32/001—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 with only oxides
    • C22C32/0015—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 with only oxides with only single oxides as main non-metallic constituents
    • C22C32/0021—Matrix based on noble metals, Cu or alloys thereof

Definitions

  • the invention relates to silver-iron materials with further oxidic additives for electrical switch contacts.
  • Contact materials for use in electrical power engineering must have high erosion resistance, low welding force and low contact resistance.
  • the composite material silver-nickel has proven itself for switching currents of less than 100A. It has a high erosion resistance with very good excess temperature behavior.
  • a disadvantage of this material is that nickel, particularly in the form of dusts, can have harmful effects on the human organism.
  • Various iron has been proposed as an alternative to nickel.
  • DE-OS 38 16 895 describes the use of a silver-iron material for electrical contacts which, in addition to silver, contains 3 to 30% by weight of iron and a total of 0.05 to 5% by weight of one or more of the additives manganese, Contains copper, zinc, antimony, bismuth oxide, molybdenum oxide, tungsten oxide and chromium nitride. These materials show a significantly better overtemperature behavior with a good service life compared to simple silver-iron materials, but are still below the values of corresponding silver-nickel materials.
  • contact materials are disclosed, which besides Silver can contain 5 to 50% by weight of iron and up to 5% by weight of one or more of the oxides titanium oxide, zirconium oxide, niobium oxide, tantalum oxide, molybdenum oxide, tungsten oxide, manganese oxide, copper oxide and zinc oxide.
  • a contact material is known which contains iron oxide, zirconium oxide and tungsten oxide in addition to silver.
  • EP-PS 0 586 411 describes a contact material made of silver with 1 to 50% by weight of iron and 0.01 to 5% by weight of rhenium.
  • the materials consist of 0.5 to 4.5% by weight of iron and 0.05 to 2% by weight of one or more of the oxidic additives magnesium oxide, calcium oxide, yttrium oxide, lanthanum oxide, titanium oxide, zirconium oxide, Hafnium oxide, cerium oxide, niobium oxide, tantalum oxide, chromium oxide, manganese oxide, iron oxide, zinc oxide, aluminum oxide, indium oxide, silicon oxide and tin oxide, the rest being silver.
  • the oxidic additives magnesium oxide, calcium oxide, yttrium oxide, lanthanum oxide, titanium oxide, zirconium oxide, Hafnium oxide, cerium oxide, niobium oxide, tantalum oxide, chromium oxide, manganese oxide, iron oxide, zinc oxide, aluminum oxide, indium oxide, silicon oxide and tin oxide, the rest being silver.
  • oxidic components Preferably, 0.2 to 1.5% by weight of oxidic components are added.
  • the materials contain 0.2 to 1.2% by weight of magnesium oxide, calcium oxide, yttrium oxide, lanthanum oxide, titanium oxide, zirconium oxide, hafnium oxide, cerium oxide, niobium oxide, tantalum oxide, aluminum oxide and silicon oxide.
  • the iron content is between 0.5 and 2.5% by weight.
  • the silver-iron materials used to date with further additives normally contained between 10 and 20% by weight of iron.
  • the reduction in the iron content is accompanied by an improvement in the excess temperature behavior.
  • the welding behavior and the service life deteriorate as the iron content decreases.
  • the addition of the oxides mentioned in amounts between 0.05 to 2% by weight increases the service life and welding reliability disproportionately without the excess temperature value being impaired. It is advantageous for the overtemperature behavior if the iron content is below 4.5%.
  • the materials are resistance weldable and connections with copper base materials show high connection strengths. Materials whose iron content is less than 2.5% by weight and the amount of oxidic additives less than 1.2% by weight have proven particularly useful.
  • the materials can be manufactured economically and are comparable in their switching properties with the silver-nickel material, in particular the overtemperature shows values that the silver-nickel materials also achieve.
  • the materials are manufactured by powder metallurgy by mixing the corresponding powders, cold isostatic pressing, sintering and extrusion to form wires or profiles.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Contacts (AREA)
EP96117210A 1995-11-20 1996-10-26 Matériau argent-fer pour contacts de commutateurs électriques Expired - Lifetime EP0774529B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19543222A DE19543222C1 (de) 1995-11-20 1995-11-20 Silber-Eisen-Werkstoff für elektrische Schaltkontakte (I)
DE19543222 1995-11-20

Publications (2)

Publication Number Publication Date
EP0774529A1 true EP0774529A1 (fr) 1997-05-21
EP0774529B1 EP0774529B1 (fr) 2000-03-29

Family

ID=7777924

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96117210A Expired - Lifetime EP0774529B1 (fr) 1995-11-20 1996-10-26 Matériau argent-fer pour contacts de commutateurs électriques

Country Status (5)

Country Link
US (1) US5841044A (fr)
EP (1) EP0774529B1 (fr)
JP (1) JPH09171735A (fr)
DE (2) DE19543222C1 (fr)
ES (1) ES2146825T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112760513A (zh) * 2020-12-30 2021-05-07 宁波东大神乐电工合金有限公司 一种银氧化锡电触头材料及其制备工艺

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW517095B (en) * 1999-04-23 2003-01-11 Tanaka Precious Metal Ind Co L Method for producing Ag-ZnO electric contact material and electric contact material produced thereby
WO2002044437A2 (fr) 2000-11-02 2002-06-06 Composite Tool Company, Inc. Alliages haute resistance et procedes de production de ces derniers
US7766844B2 (en) * 2004-04-21 2010-08-03 Smith & Nephew, Inc. Surgical instrument aspiration valve
US20060102228A1 (en) * 2004-11-12 2006-05-18 Ferro Corporation Method of making solar cell contacts
US8093491B2 (en) * 2005-06-03 2012-01-10 Ferro Corporation Lead free solar cell contacts
WO2008116478A1 (fr) * 2007-03-23 2008-10-02 Siemens Aktiengesellschaft Mélange de gaz protecteurs et procédé de soudage
WO2009029738A1 (fr) * 2007-08-31 2009-03-05 Ferro Corporation Structure de contact en couches pour des cellules solaires
JP5342931B2 (ja) 2009-06-05 2013-11-13 マブチモーター株式会社 摺動接点材料及びクラッド複合材並びにモーター
CN101794636B (zh) * 2010-02-02 2011-08-10 福达合金材料股份有限公司 一种银氧化铁电接触材料的制备方法
JP7327476B2 (ja) * 2019-05-31 2023-08-16 オムロン株式会社 Ａｇ合金を主成分とする接点用材料、該接点用材料を用いた接点、及び電気機器
CN110499435B (zh) * 2019-09-20 2021-07-09 昆明贵金属研究所 一种银基电接触材料及其制备方法
JP7382382B2 (ja) * 2021-12-24 2023-11-16 マブチモーター株式会社 モーターブラシ用の摺動接点材料及びモーターブラシ並びに直流モーター

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2924238A1 (de) * 1978-06-16 1979-12-20 Nippon Telegraph & Telephone Elektrisches kontaktmaterial und verfahren zu seiner herstellung
DE3816895A1 (de) 1987-06-06 1988-12-22 Degussa Verwendung eines silber-eisen-werkstoffs fuer elektrische kontakte
DE3911904A1 (de) 1988-04-16 1989-12-14 Duerrwaechter E Dr Doduco Pulvermetallurgisches verfahren zum herstellen eines halbzeugs fuer elektrische kontakte aus einem verbundwerkstoff auf silberbasis mit eisen
JPH06100965A (ja) * 1992-09-22 1994-04-12 Tokuriki Honten Co Ltd 電気接点材料
JPH06100963A (ja) * 1992-09-22 1994-04-12 Tokuriki Honten Co Ltd 電気接点材料

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1139281B (de) * 1954-07-14 1962-11-08 Degussa Verbundwerkstoff fuer elektrische Kontakte
DE1539879B2 (de) * 1966-11-19 1971-03-11 Fa Dr Eugen Durrwachter Doduco, 7530 Pforzheim Durch kaltpress schweissen von drahtstueckken hergestellter bimetallkontaktniet
US3930849A (en) * 1973-05-24 1976-01-06 P. R. Mallory & Co., Inc. Electrical contact material of the ag-cdo type and method of making same
US3951872A (en) * 1973-12-03 1976-04-20 P. R. Mallory & Co., Inc. Electrical contact material
DE2659012C3 (de) * 1976-12-27 1980-01-24 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren zum Herstellen eines Sinterkontaktwerkstoffes aus Silber und eingelagerten Metalloxiden
MX149630A (es) * 1977-06-20 1983-12-06 Chugai Electric Ind Co Ltd Mejoras en metodo para fabricar un contacto electrico
US4256489A (en) * 1979-01-10 1981-03-17 The Boeing Company Low wear high current density sliding electrical contact material
YU46258B (sh) * 1987-06-06 1993-05-28 Degussa Ag. Primena srebrno gvozdenog materijala za električne kontakte
US5246480A (en) * 1988-04-20 1993-09-21 Siemens Aktiengesellschaft Sintered contact material based on silver for use in power engineering switch-gear, in particular for contact pieces in low-voltage switches
US4954170A (en) * 1989-06-30 1990-09-04 Westinghouse Electric Corp. Methods of making high performance compacts and products
DE4117312A1 (de) * 1991-05-27 1992-12-03 Siemens Ag Kontaktwerkstoff auf silberbasis zur verwendung in schaltgeraeten der energietechnik sowie verfahren zur herstellung von kontaktstuecken aus diesem werkstoff
DE4343550A1 (de) * 1993-12-20 1995-06-22 Siemens Ag Kontaktwerkstoff auf Silberbasis zur Verwendung in Schaltgeräten der Energietechnik

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2924238A1 (de) * 1978-06-16 1979-12-20 Nippon Telegraph & Telephone Elektrisches kontaktmaterial und verfahren zu seiner herstellung
DE3816895A1 (de) 1987-06-06 1988-12-22 Degussa Verwendung eines silber-eisen-werkstoffs fuer elektrische kontakte
DE3911904A1 (de) 1988-04-16 1989-12-14 Duerrwaechter E Dr Doduco Pulvermetallurgisches verfahren zum herstellen eines halbzeugs fuer elektrische kontakte aus einem verbundwerkstoff auf silberbasis mit eisen
JPH06100965A (ja) * 1992-09-22 1994-04-12 Tokuriki Honten Co Ltd 電気接点材料
JPH06100963A (ja) * 1992-09-22 1994-04-12 Tokuriki Honten Co Ltd 電気接点材料

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 18, no. 377 (C - 1225) 15 July 1994 (1994-07-15) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112760513A (zh) * 2020-12-30 2021-05-07 宁波东大神乐电工合金有限公司 一种银氧化锡电触头材料及其制备工艺

Also Published As

Publication number Publication date
JPH09171735A (ja) 1997-06-30
EP0774529B1 (fr) 2000-03-29
DE59604827D1 (de) 2000-05-04
DE19543222C1 (de) 1997-02-20
US5841044A (en) 1998-11-24
ES2146825T3 (es) 2000-08-16

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