EP0795367B1 - Matière argent-fer pour contacts interrupteurs électriques et procédé pour sa fabrication - Google Patents

Matière argent-fer pour contacts interrupteurs électriques et procédé pour sa fabrication Download PDF

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Publication number
EP0795367B1
EP0795367B1 EP97101342A EP97101342A EP0795367B1 EP 0795367 B1 EP0795367 B1 EP 0795367B1 EP 97101342 A EP97101342 A EP 97101342A EP 97101342 A EP97101342 A EP 97101342A EP 0795367 B1 EP0795367 B1 EP 0795367B1
Authority
EP
European Patent Office
Prior art keywords
iron
silver
materials
powder
sintered
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
EP97101342A
Other languages
German (de)
English (en)
Other versions
EP0795367A1 (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.)
Umicore AG and Co KG
Original Assignee
DMC2 Degussa Metals Catalysts Cerdec 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7786472&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0795367(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by DMC2 Degussa Metals Catalysts Cerdec AG filed Critical DMC2 Degussa Metals Catalysts Cerdec AG
Publication of EP0795367A1 publication Critical patent/EP0795367A1/fr
Application granted granted Critical
Publication of EP0795367B1 publication Critical patent/EP0795367B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/0466—Alloys based on noble metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/09—Mixtures of metallic powders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/12—Metallic powder containing non-metallic particles
    • 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
    • C22C32/0084—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 carbon or graphite as the main non-metallic constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C5/00—Alloys based on noble metals
    • C22C5/06—Alloys based on silver
    • 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
    • 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
    • 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
    • H01H1/027—Composite material containing carbon particles or fibres
    • 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
    • H01H11/048—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by powder-metallurgical processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9265—Special properties
    • Y10S428/929—Electrical contact feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/1216—Continuous interengaged phases of plural metals, or oriented fiber containing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/1216—Continuous interengaged phases of plural metals, or oriented fiber containing
    • Y10T428/12167—Nonmetal containing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12896—Ag-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2813—Heat or solvent activated or sealable

Definitions

  • the invention relates to a sintered silver-iron material with 0.5 to 20 wt.% iron and 0 to 5 wt.% other metallic, oxidic, nitridic and / or carbide additives, balance silver, for electrical contacts and a method of manufacturing this material.
  • Contact materials for use in electrical Energy technology must have high erosion resistance, low Show welding force and low contact resistance.
  • For air-tight switchgear in low-voltage technology has for switching currents of less than 100A Proven silver-nickel composite. He has one high erosion resistance with very good Over temperature behavior.
  • a disadvantage of the material lies however, in that nickel, especially in the form of dust, harmful effects on the human organism may have. As an alternative to nickel is therefore various iron have been proposed.
  • silver-iron materials have so far not found any wider ones Application as they form when switching Cover layers tend and thus lead to high contact heating to lead. None of these materials reach the cheap ones Properties of the silver-nickel sintered materials.
  • one sintered silver-iron material with 0.5 to 20% by weight Iron and 0 to 5% by weight of other metallic, oxidic, nitridic and / or carbidic additives, balance silver for electrical contacts to develop a low Tendency to weld, low contact resistance and high erosion resistance and therefore a long service life has, and with these properties the known Silver-nickel contact materials come as close as possible. It should also include a process for making such Materials are developed.
  • This object is achieved in that the Iron particles in the sintered material Carbon content of more than 0.25% by weight and a Have microhardness of more than 200 HV 0.025.
  • the iron particles should preferably have one Carbon content of more than 0.4% by weight and a Have microhardness of more than 400 HV 0.025.
  • Silver-iron materials have proven to be the best which the iron particles unite in the sintered state Carbon content from 0.6 to 1.2% by weight and a microhardness of more than 600 HV 0.025.
  • These materials are manufactured by mixing Silver powder with 0.5 to 20% by weight iron powder and 0 to 5 % By weight of other metallic, oxidic, nitridic and / or carbide additives, cold isostatic pressing, Sintering at 650 to 940 ° C under protective gas and Extrusion, using an iron powder, the contains more than 0.25% by weight of carbon, and the sintering in in a hydrogen-free protective gas atmosphere.
  • the silver-iron material according to the invention shows in terms of lifespan and other Properties practically the same behavior as silver-nickel materials.
  • the silver-iron materials can contain 0 to 5% by weight.
  • metallic additives such as zinc, copper, manganese, rhenium, Iridium and ruthenium, or non-metallic additives such as Tungsten oxide, molybdenum oxide, iron oxides, magnesium oxide, Calcium oxide, yttrium oxide, tantalum oxide, chromium oxide, Manganese oxide, zinc oxide, aluminum oxide, indium oxide, Silicon oxide and zirconium oxide can be added.
  • the inventive Process materials better too.
  • the cause is in that the iron is inside during extrusion the silver matrix is distributed significantly finer and that the iron is not too elongated due to the brittleness Iron lines deformed, as in the well-known silver-iron materials.
  • the materials are economical manufacture and are in all switching properties with the Silver-nickel material comparable, especially the Overtemperature and service life show values that too Achieve silver-nickel materials.
  • AgNi20 90 110,000 2 AgFe8.5Zn1.5 116 95,000 3rd AgFe8 130 95,000 4th AgFe8Re5 95 90,000 5 AgFe6MgO0.5 95 90,000 6 AgFe8.5Zn1.5 110 110,000 7 AgFe6 110 110,000 8th AgFe6Re0.5 80 100,000 9 AgFe4MgO0.5 80 105,000 10 AgFe4 80 100,000 11 AgFe10 120 125,000 12th AgFe8Al2O30.5 95 110,000 13 AgFe8SnO20.5 90 110,000 14 AgFe8SiO20.5 90 115,000 15 AgFe8Ir0.5 95 125,000 16 AgFe8Ru0.5 90 115,000
  • the wires can always be used as contact pieces process further.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Contacts (AREA)

Claims (4)

  1. Matériau fritté argent-fer ayant de 0,5 à 20 % en poids de fer et de 0 à 5 % en poids d'autres additions métalliques, oxydiques, nitridiques, et/ou carbidiques, le reste étant de l'argent, pour des contacts électriques,
    caractérisé en ce que
    les particules de fer dans le matériau fritté possèdent une teneur en carbone de plus de 0,25 % en poids et une microdureté de plus de 200 HV 0,025.
  2. Matériau argent-fer selon la revendication 1,
    caractérisé en ce que
    les particules de fer dans le matériau possèdent une teneur en carbone de plus de 0,4 % en poids et une microdureté de plus de 400 HV 0,025.
  3. Matériau argent-fer selon la revendication 1 et la revendication 2,
    caractérisé en ce que
    les particules de fer dans le matériau possèdent une teneur en carbone allant de 0,6 à 1,2 % en poids et une microdureté de plus de 600 HV 0,025.
  4. Procédé de production de matériaux argent-fer selon les revendications 1 à 3, par mélange de poudre d'argent avec 0,5 à 20 % en poids de poudre de fer et de 0 à 5 % en poids d'autres additions métalliques, oxydiques, nitridiques et/ou carbidiques, par pressage isostatique à froid et par frittage de 650 à 940°C et extrusion,
    caractérisé en ce que
    la poudre de fer renferme plus de 0,25 % en poids de carbone et le frittage est effectué dans une atmosphère de gaz protecteur dépourvu d'hydrogène.
EP97101342A 1996-02-27 1997-01-29 Matière argent-fer pour contacts interrupteurs électriques et procédé pour sa fabrication Expired - Lifetime EP0795367B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19607183A DE19607183C1 (de) 1996-02-27 1996-02-27 Gesinterter Silber-Eisen-Werkstoff für elektrische Kontakte und Verfahren zu seiner Herstellung
DE19607183 1996-02-27

Publications (2)

Publication Number Publication Date
EP0795367A1 EP0795367A1 (fr) 1997-09-17
EP0795367B1 true EP0795367B1 (fr) 2001-06-20

Family

ID=7786472

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97101342A Expired - Lifetime EP0795367B1 (fr) 1996-02-27 1997-01-29 Matière argent-fer pour contacts interrupteurs électriques et procédé pour sa fabrication

Country Status (6)

Country Link
US (1) US5985440A (fr)
EP (1) EP0795367B1 (fr)
JP (1) JPH09235634A (fr)
CN (1) CN1080766C (fr)
DE (2) DE19607183C1 (fr)
ES (1) ES2160270T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010014745A1 (de) * 2010-01-15 2011-07-21 Tyco Electronics AMP GmbH, 64625 Elektrisches Kontaktelement und Verfahren zur Herstellung eines elektrischen Kontaktelements

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19934537C1 (de) * 1999-07-22 2001-07-12 Klaus Bruchmann Schutzvorrichtung für einen Kontakt eines Sicherungseinsatzes
DE10012250B4 (de) * 2000-03-14 2006-06-01 Umicore Ag & Co. Kg Kontaktwerkstoffe auf Basis Silber-Eisen-Kupfer
US9018552B2 (en) * 2011-11-04 2015-04-28 Taiwan Electric Contacts Corp. Electrical contact including stainless steel material
EP2644723B1 (fr) * 2012-03-26 2017-01-18 Umicore AG & Co. KG Matière active composite
CN103014402B (zh) * 2012-12-21 2017-05-31 重庆川仪自动化股份有限公司 高熔点合金元素增强滑动电接触合金及其层状复合材料
CN105359241A (zh) * 2013-06-24 2016-02-24 三菱电机株式会社 电触点材料及其制造方法
CN105463235A (zh) * 2015-12-23 2016-04-06 四川飞龙电子材料有限公司 一种银铁铼电接触材料的制备方法
CN107675017B (zh) * 2017-08-04 2020-03-31 福达合金材料股份有限公司 一种银铁镍电触头材料及其制备方法
CN108054031B (zh) * 2017-09-11 2019-10-25 大连大学 一种片状铁成网状分布强化的银基电触头材料
CN108823451A (zh) * 2018-07-24 2018-11-16 深圳市中科睿金贵材科技有限公司 一种银-金-碳合金的制备方法
CN112981213A (zh) * 2021-02-03 2021-06-18 中国科学院金属研究所 一种银铁复合材料及其制备方法

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
DE1106965B (de) * 1957-02-12 1961-05-18 Siemens Ag Verfahren zur Herstellung dicht gesinterter Formkoerper aus Silberverbundwerkstoff
DE1153178B (de) * 1959-08-01 1963-08-22 Duerrwaechter E Dr Doduco Verwendung eines verformbaren Silber-Metalloxyd-Werkstoffes fuer elektrische Kontakte
US3708283A (en) * 1971-01-19 1973-01-02 Parker Pen Co Process for preparing cemented ferrochrome
DE3213265A1 (de) * 1981-04-10 1982-11-18 Sumitomo Electric Industries, Ltd., Osaka Elektrisches kontaktmaterial
US4752334A (en) * 1983-12-13 1988-06-21 Scm Metal Products Inc. Dispersion strengthened metal composites
US4937041A (en) * 1984-03-23 1990-06-26 Carlisle Memory Products Group Incorporated Stainless steel silver compositions
YU46258B (sh) * 1987-06-06 1993-05-28 Degussa Ag. Primena srebrno gvozdenog materijala za električne kontakte
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010014745A1 (de) * 2010-01-15 2011-07-21 Tyco Electronics AMP GmbH, 64625 Elektrisches Kontaktelement und Verfahren zur Herstellung eines elektrischen Kontaktelements
DE102010014745B4 (de) * 2010-01-15 2011-09-22 Tyco Electronics Amp Gmbh Elektrisches Kontaktelement und Verfahren zur Herstellung eines elektrischen Kontaktelements

Also Published As

Publication number Publication date
US5985440A (en) 1999-11-16
JPH09235634A (ja) 1997-09-09
DE59703840D1 (de) 2001-07-26
ES2160270T3 (es) 2001-11-01
CN1080766C (zh) 2002-03-13
EP0795367A1 (fr) 1997-09-17
CN1161380A (zh) 1997-10-08
DE19607183C1 (de) 1997-04-10

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