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DE2365450A1 - SILVER METAL OXIDE MATERIAL FOR CONTACT PURPOSES - Google Patents

SILVER METAL OXIDE MATERIAL FOR CONTACT PURPOSES

Info

Publication number
DE2365450A1
DE2365450A1 DE2365450*A DE2365450A DE2365450A1 DE 2365450 A1 DE2365450 A1 DE 2365450A1 DE 2365450 A DE2365450 A DE 2365450A DE 2365450 A1 DE2365450 A1 DE 2365450A1
Authority
DE
Germany
Prior art keywords
silver
metal oxide
oxide material
copper
silver metal
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.)
Ceased
Application number
DE2365450*A
Other languages
German (de)
Other versions
DE2365450B2 (en
Inventor
Ulf Dipl Ing Harmsen
Wolfgang Poettken
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.)
Doduco Solutions GmbH
Original Assignee
Doduco GmbH and Co KG Dr Eugen Duerrwaechter
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 Doduco GmbH and Co KG Dr Eugen Duerrwaechter filed Critical Doduco GmbH and Co KG Dr Eugen Duerrwaechter
Priority to DE2365450*A priority Critical patent/DE2365450B2/en
Publication of DE2365450A1 publication Critical patent/DE2365450A1/en
Publication of DE2365450B2 publication Critical patent/DE2365450B2/en
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
    • B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
    • 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
    • H01H1/0231—Composite material having a noble metal as the basic material provided with a solder layer

Landscapes

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

Description

Abschrift * 05.09.74- Copy * 05.09.74-

Dr. Rudolf Bauer ' Dipl.-Ing. Helmut HubbuchDr. Rudolf Bauer 'Dipl.-Ing. Helmut Hubbuch

23. 8. 1974- I/KAugust 23, 1974- I / K

Firma Dr. Eugen Dürrwächter DODUCO, PforzheimCompany Dr. Eugen Dürrwächter DODUCO, Pforzheim

Silber-Metalloxid-Werkstoff für Kontaktζwecke.Silver metal oxide material for contact purposes.

Erfindung bezieht sich auf einen Silber-Metalloxid-Werkstoff, vorzugsweise Silber-Kadmiumoxid-Werkstoff, mit einer lötbaren SchichtThe invention relates to a silver-metal oxide material, preferably a silver-cadmium oxide material, with a solderable layer

Silber-Kadmiumoxid-Werkstoffe haben bekanntlich eine sehr geringe Schweißneigung und werden daher als Kontaktbeläge für Schaltg^räte mit hoher Schaltzahl bei kleiner und mittlerer Belastung im großen Umfang eingesetzt (H. Schreiner Pulvermetallurgie elektrischer Kontakte, Springer-Verlag, Berlin, Göttingen, Heidelberg 1964 S. 166-165)Silver-cadmium oxide materials are known to have a very low tendency to weld and are therefore used as contact deposits For switching devices with a high number of switching operations for small and medium-sized ones Load used on a large scale (H. Schreiner powder metallurgy of electrical contacts, Springer-Verlag, Berlin, Göttingen, Heidelberg 1964 pp. 166-165)

Verbundwerkstoffe aus Silber mit Metalloxidzusätzen lassen sich aber bekanntlich nicht ohne weiteres löten, weil das Lot die Oberfläche schlecht benetzt. (H. Schreiner, Pulvermetallurgie elektrischer Kontakte, Springer-Verlag 1964 S. 221).Let composites made of silver with metal oxide additives As is well known, however, they cannot simply solder themselves, because that Solder poorly wets the surface. (H. Schreiner, Powder Metallurgy electrical contacts, Springer-Verlag 1964 P. 221).

509820/ 1 100509820/1 100

* 05.09.74-— 2 —* 05.09.74-— 2 -

Silber-Kadmiumoxid-Werkstoffe werden daher üblicherweise dadurch mit einer lötbaren Schicht versehen, daß man eine Silber-Kadmium-Legierung mit einer Silberschicht oder mit »inem Silberlot versieht und durch Innenoxydation die SiI-ber-Kadmium-Legierung in einen Silber-Kadmiumoxid-Verbundw^rkstoff überführt« (DT-PS 1 090 484)".Es kann auch eine ^inseitige Innenoxydation einer Silber-Kadmium-Legierung prfolgen, dann besteht die lötbare Schicht aus einer SiI-b^r-Kadmium-Legierung (DT-PS 15 33 235).Silver-cadmium oxide materials are therefore usually provided with a solderable layer that one Silver-cadmium alloy with a silver layer or with “A silver solder and internal oxidation provides the silicon-over-cadmium alloy converted into a silver-cadmium oxide composite "(DT-PS 1 090 484)". It can also be a ^ Follow internal oxidation of a silver-cadmium alloy, then the solderable layer consists of a SiI-b ^ r-cadmium alloy (DT-PS 15 33 235).

Der Erfindung liegt die Aufgabe zu Grunde , einen Silber-Metalloxid-Verbundwerkstoff unmittelbar mit einer oxidfreien, lötbaren Schicht zu verbinden.The invention is based on the object of a silver-metal oxide composite material to be connected directly to an oxide-free, solderable layer.

Umfangreiche Versuche mit zahlreichen Metallen und Legierungen haben überraschenderweise ergeben, daß es Legierungen, insbesondere Silber-Kupferlegierungen, gibt, die einen Silber-Kadmiumoxid-Verbundwerkstoff gut benetzen. Eine wissenschaftliche Erklärung dieser Ausnahmeerscheinung steht noch aus. Da solche Legierungen, insbesondere Silber-Kupferlegierungen, bekanntlich gut lötbar sind, ist-die erwähnte Aufgabe bei dem Verfahren der Erfindung dadurch gelöst worden, daß der Silb^er-Kadmiurnoxid-Verbundwerkstoff mit einer lötbar^n, den Verbundwerkstoff benetzenden Legierung hintergossen wird.
Vorzugsweise werden Silber-Kupferlegierungen verwendet.Extensive tests with numerous metals and alloys have surprisingly shown that there are alloys, in particular silver-copper alloys, which wet a silver-cadmium oxide composite well. A scientific explanation of this exceptional phenomenon is still pending. Since such alloys, in particular silver-copper alloys, are known to be well solderable, the aforementioned object has been achieved in the method of the invention in that the silver-cadminium oxide composite is back-cast with a solderable alloy which wets the composite.
Silver-copper alloys are preferably used.

509820/1 100509820/1 100

* 05.09.74-— 3 —* 05.09.74-— 3 -

Ausführungsbeispiele:Embodiments:

1. Platten in den Abmessungen 19 χ 19 x 0,6 mm aus Silber-Kupfer mit 28 % Kupfer werden auf Platten in den Abmessungen 20 χ 20 χ 3 aus pulvermetallurgisch hergestelltem Silber-Kadmiumoxid mit 10 % Kadmiumoxid bei 800 0G unter Stickstoff aufgeschmolzen. Anschließend können die nun lötbaren Silber-Kadmiumoxid-Platten mit dem Hartlot L-Ag 40 Cd nach DIN8513 ohne weiteres auf einen Kontaktträger aus Kupfer aufgelö^tet werden.1. Plates measuring 19 χ 19 x 0.6 mm made of silver-copper with 28% copper are melted onto plates measuring 20 χ 20 χ 3 made of powder-metallurgically produced silver-cadmium oxide with 10% cadmium oxide at 800 0 G under nitrogen . The now solderable silver-cadmium oxide plates can then easily be soldered onto a copper contact carrier using the L-Ag 40 Cd hard solder according to DIN8513.

2. Einer pulvermetallurgisch hergestellten Platte aus Silber-Kadmiumoxid mit 10 % Kadmiumoxid in den Abmessungen2. A powder-metallurgically produced plate made of silver-cadmium oxide with 10 % cadmium oxide in the dimensions

320 χ 150 χ 10 mm wird eine 1,5 mm dicke Schicht aus Silber-Kupfer mit 20 % Kupfer angegossen und anschließend nach mehrmaligem Glühen auf 2 mm Dicke gewalzt. Aus dem Band werden Kontaktplatten gestanzt und auf Kontaktträger mit einem Hartlot gelötet.320 150 χ 10 mm becomes a 1.5 mm thick layer of silver-copper Cast on with 20% copper and then rolled to a thickness of 2 mm after repeated annealing. Become out of the tape Contact plates punched and soldered to the contact carrier with a hard solder.

3- An eine galvanisch verniakelte oder versilberte AgCdO-3- To a galvanically nickel-plated or silver-plated AgCdO

Platte in den Abmessungen 400 χ 150 χ 10 mm wird Silber-Kupfer mit 10 % Kupfer 1,5 mm dick angegossen.Plate with the dimensions 400 χ 150 χ 10 mm is cast on silver-copper with 10% copper 1.5 mm thick.

M-. An eine stranggepreßte Platte aus Silber -Zinkoxid mit M-. On an extruded plate made of silver-zinc oxide with

8 % Zinkoxid wird eine Platte 2 mm dick aus Silber-Kupfer mit 28 % Kupfer angegossen und auf das Fertigmaß gewalzt.8 % zinc oxide, a plate 2 mm thick made of silver-copper with 28% copper is cast and rolled to the finished size.

509820/110 0509820/110 0

_ 4 —_ 4 -

5· Auf einem allseitig innenoxidierten Silber-Kadmium-5 On an all-round internally oxidized silver-cadmium

oxid-Band odpr Platte mit 10 % Kadmiumoxid wird im Durchlaufofen unter Stickstoff Silber-Kupfer mit 20 % Kupfer kontinuierlich aufgeschmolzen.oxide tape or plate with 10% cadmium oxide is continuously melted in a continuous furnace under nitrogen, silver-copper with 20% copper.

6. Innenoxidierte Silber-Kadmiumoxid-Platten mit 15 % 6. Internally oxidized silver-cadmium oxide plates with 15 %

Kadmiumoxid in den Abmessungen 16x16x2 mm werden unt^r Stickstoff bei 800 0C mit Platten in den Abmessungen 15 χ 15 χ 0,3 mm aus Silber-Kupfer mit 28 % Kupfer angeschmolzen. Cadmium oxide in the dimensions 16x16x2 mm are unt ^ r nitrogen at 800 0 C and the plates with the dimensions 15 15 χ χ 0.3 mm of silver-copper having 28% copper melted.

609820/1 1609820/1 1

Claims (3)

*05.09.74-Dr. Rudolf Bauer * Dipl.-Ing. Helmut Hubbuch 2365450 23.8.1974 i/k Patentansprüche:* 05.09.74-Dr. Rudolf Bauer * Dipl.-Ing. Helmut Hubbuch 2365450 August 23, 1974 i / k patent claims: 1. Verfahren zur Herstellung ^ines für Kontaktzwecke verwendbaren Silber-Metalloxid-Werkstoffes, der einseitig1. Process for producing ^ ines usable for contact purposes Silver metal oxide material that is unilateral mit feiner löfbaren Schicht versahen ist, dadurch gekennzeichnet, daß d^m Silber-Metalloxid-Werkstoff eine lötbare, den Verbundwerkstoff benetzende Legierung hintergossen wird.is provided with a fine solderable layer, characterized in that that d ^ m silver-metal oxide material a solderable, the Composite wetting alloy is back-cast. 2. Anwendung des Verfahrens nach Anspruch 1, gekennzeichnet durch die Verwendung von Silber-Kupferlegierungen,2. Application of the method according to claim 1, characterized by the use of silver-copper alloys, vorzugsweise mit 10 % Kupfer als angeschmolzene lötfähige Schicht.preferably with 10% copper as a melted, solderable layer. 3. Anwendung des Verfahrens nach Anspruch 1 und 2, gekennzeichnet durch eine vorhergehende galvanische Versilberung3. Application of the method according to claim 1 and 2, characterized by a previous galvanic silver plating oder Vernickelung des Silber-Metalloxid-Werkstoffes.or nickel plating of the silver metal oxide material. 509820/1 100509820/1 100
DE2365450*A 1973-09-06 1973-09-06 Process for the production of a silver-metal oxide material for contacts Ceased DE2365450B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2365450*A DE2365450B2 (en) 1973-09-06 1973-09-06 Process for the production of a silver-metal oxide material for contacts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2365450*A DE2365450B2 (en) 1973-09-06 1973-09-06 Process for the production of a silver-metal oxide material for contacts

Publications (2)

Publication Number Publication Date
DE2365450A1 true DE2365450A1 (en) 1975-05-15
DE2365450B2 DE2365450B2 (en) 1975-09-04

Family

ID=5902363

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2365450*A Ceased DE2365450B2 (en) 1973-09-06 1973-09-06 Process for the production of a silver-metal oxide material for contacts

Country Status (1)

Country Link
DE (1) DE2365450B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4344794A (en) 1979-12-05 1982-08-17 Degussa Ag Solder alloy for the direct soldering of oxide containing silver catalyst on catalyst carrier
US4456662A (en) * 1981-06-12 1984-06-26 Degussa Aktiengesellschaft Electrical contact piece

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3235574A1 (en) * 1982-09-25 1984-03-29 Degussa Ag, 6000 Frankfurt SOLDER ALLOYS FOR SOLDERING CONTACT MATERIALS
DE19627956A1 (en) * 1996-07-11 1998-01-15 Abb Patent Gmbh Producing an electric contact element for a vacuum switching chamber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4344794A (en) 1979-12-05 1982-08-17 Degussa Ag Solder alloy for the direct soldering of oxide containing silver catalyst on catalyst carrier
US4456662A (en) * 1981-06-12 1984-06-26 Degussa Aktiengesellschaft Electrical contact piece

Also Published As

Publication number Publication date
DE2365450B2 (en) 1975-09-04

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Legal Events

Date Code Title Description
8235 Patent refused