EP0774529B1 - Silber-Eisen-Werkstoff für elektrische Schaltkontakte (I) - Google Patents

Silber-Eisen-Werkstoff für elektrische Schaltkontakte (I) Download PDF

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Publication number
EP0774529B1
EP0774529B1 EP96117210A EP96117210A EP0774529B1 EP 0774529 B1 EP0774529 B1 EP 0774529B1 EP 96117210 A EP96117210 A EP 96117210A EP 96117210 A EP96117210 A EP 96117210A EP 0774529 B1 EP0774529 B1 EP 0774529B1
Authority
EP
European Patent Office
Prior art keywords
oxide
silver
iron
materials
oxidic
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
EP96117210A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0774529A1 (de
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/de
Application granted granted Critical
Publication of EP0774529B1 publication Critical patent/EP0774529B1/de
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 others oxidic additives for electrical switch contacts.
  • Contact materials for use in electrical Energy technology must have high erosion resistance, low Show welding force and low contact resistance.
  • Nickel especially harmful in the form of dusts Can have an impact on the human organism.
  • Iron is an alternative to nickel been proposed.
  • DE-OS 38 16 895 uses a silver-iron material described for electrical contacts, the in addition to silver, 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, copper, Zinc, antimony, bismuth oxide, molybdenum oxide, tungsten oxide and Contains chromium nitride. These materials show a clearly better overtemperature behavior with a good service life compared to simple silver-iron materials, however still below the values of corresponding silver-nickel materials.
  • contact materials are disclosed that next to Silver 5 to 50% by weight iron and up to 5% by weight one or several of the oxides titanium oxide, zirconium oxide, niobium oxide, Tantalum oxide, molybdenum oxide, tungsten oxide, manganese oxide, May contain copper oxide and zinc oxide.
  • a contact material is known, in addition to Silver contains iron oxide, zirconium oxide and tungsten oxide.
  • EP-PS 0 586 411 is a contact material made of silver with 1 to 50 wt.% iron and 0.01 to 5 wt.% rhenium described.
  • Contact materials are known from JP-A-06 100 965 which contain silver, 0.1 to 15% by weight of iron and less than 10% by weight of Cd, Sn, Sb, Zn, In, Bi and / or Te.
  • An internally oxidized alloy powder made of silver with 0.05 to 10% by weight of Cd, Sn, Sb, Zn, In, Bi and / or Te is mixed with iron powder and sintered.
  • the Materials made from 0.5 to 4.5% by weight iron and 0.05 to 2% by weight of one or more of the oxidic additives
  • the materials are 0.2 to 1.2% by weight magnesium oxide, calcium oxide, yttrium oxide, Lanthanum oxide, titanium oxide, zirconium oxide, hafnium oxide, Cerium oxide, niobium oxide, tantalum oxide, aluminum oxide and Contain silicon oxide.
  • the iron content is between 0.5 and 2.5% by weight.
  • the silver-iron materials used so far with others Additives normally contained between 10 and 20% by weight Iron. But it has been shown that with the reduction an improvement in the iron content Overheating behavior goes hand in hand. But at the same time the welding behavior and the service life with decreasing Iron content worsened. Surprisingly, it did it has now been shown that by adding the oxides mentioned in Amounts between 0.05 to 2% by weight of the service life and Welding safety increases disproportionately, without the Overtemperature value deteriorates. It is for the overtemperature behavior is advantageous if the Iron content is below 4.5%.
  • the materials are resistance weldable and connections with Copper base materials show high Connection strengths. Have proven particularly successful Materials whose iron content is less than 2.5% by weight and the The amount of oxidic additives is less than 1.2% by weight.
  • the materials can be manufactured economically and are in all switching characteristics with the Silver-nickel tooling comparable, especially the Overtemperature shows values that also Achieve silver-nickel materials.
  • the materials are manufactured using powder metallurgy by mixing the appropriate powder, cold isostatic Pressing, sintering and extrusion into 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 Silber-Eisen-Werkstoff für elektrische Schaltkontakte (I) Expired - Lifetime EP0774529B1 (de)

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 EP0774529A1 (de) 1997-05-21
EP0774529B1 true EP0774529B1 (de) 2000-03-29

Family

ID=7777924

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96117210A Expired - Lifetime EP0774529B1 (de) 1995-11-20 1996-10-26 Silber-Eisen-Werkstoff für elektrische Schaltkontakte (I)

Country Status (5)

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

Families Citing this family (13)

* 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 (en) 2000-11-02 2002-06-06 Composite Tool Company, Inc. High strength alloys and methods for making same
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
US20100032414A1 (en) * 2007-03-23 2010-02-11 Nikolai Arjakine Inert gas mixture and method for welding
WO2009029738A1 (en) * 2007-08-31 2009-03-05 Ferro Corporation Layered contact structure for solar cells
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
CN112760513B (zh) * 2020-12-30 2022-04-15 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
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

Family Cites Families (17)

* 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
US4279649A (en) * 1978-06-16 1981-07-21 Nippon Telegraph And Telephone Public Corporation Electrical contact material
US4256489A (en) * 1979-01-10 1981-03-17 The Boeing Company Low wear high current density sliding electrical contact material
DE3816895A1 (de) * 1987-06-06 1988-12-22 Degussa Verwendung eines silber-eisen-werkstoffs fuer elektrische kontakte
YU46258B (sh) * 1987-06-06 1993-05-28 Degussa Ag. Primena srebrno gvozdenog materijala za električne 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
WO1989010417A1 (en) * 1988-04-20 1989-11-02 Siemens Aktiengesellschaft Sintered contact material based on silver for use in power engineering switchgear, 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
JPH06100963A (ja) * 1992-09-22 1994-04-12 Tokuriki Honten Co Ltd 電気接点材料
JPH06100965A (ja) * 1992-09-22 1994-04-12 Tokuriki Honten Co Ltd 電気接点材料
DE4343550A1 (de) * 1993-12-20 1995-06-22 Siemens Ag Kontaktwerkstoff auf Silberbasis zur Verwendung in Schaltgeräten der Energietechnik

Also Published As

Publication number Publication date
DE19543222C1 (de) 1997-02-20
EP0774529A1 (de) 1997-05-21
DE59604827D1 (de) 2000-05-04
JPH09171735A (ja) 1997-06-30
ES2146825T3 (es) 2000-08-16
US5841044A (en) 1998-11-24

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