EP0056857B1 - Matériau pour contacts électriques - Google Patents

Matériau pour contacts électriques Download PDF

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Publication number
EP0056857B1
EP0056857B1 EP81110185A EP81110185A EP0056857B1 EP 0056857 B1 EP0056857 B1 EP 0056857B1 EP 81110185 A EP81110185 A EP 81110185A EP 81110185 A EP81110185 A EP 81110185A EP 0056857 B1 EP0056857 B1 EP 0056857B1
Authority
EP
European Patent Office
Prior art keywords
oxide
weight
gew
germanium
electrical contacts
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
Application number
EP81110185A
Other languages
German (de)
English (en)
Other versions
EP0056857A1 (fr
Inventor
Wolfgang Dr. Böhm
Roger Wolmer
Willi Malikowski
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
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6123147&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0056857(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Degussa GmbH filed Critical Degussa GmbH
Priority to AT81110185T priority Critical patent/ATE7979T1/de
Publication of EP0056857A1 publication Critical patent/EP0056857A1/fr
Application granted granted Critical
Publication of EP0056857B1 publication Critical patent/EP0056857B1/fr
Expired 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
    • 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
    • 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
    • H01H1/02372—Composite material having a noble metal as the basic material and containing oxides containing as major components one or more oxides of the following elements only: Cd, Sn, Zn, In, Bi, Sb or Te
    • H01H1/02376—Composite material having a noble metal as the basic material and containing oxides containing as major components one or more oxides of the following elements only: Cd, Sn, Zn, In, Bi, Sb or Te containing as major component SnO2

Definitions

  • the invention relates to a material for electrical contacts made of silver, tin oxide and one or more other metal oxides.
  • the object of the invention was to provide a material for electrical contacts made of silver, tin oxide and one or more other metal oxides, which has a long service life, an even lower tendency to weld and even lower temperatures when switching compared to the known contact materials.
  • the material contains 0.05 to 4% by weight of molybdenum oxide and / or germanium oxide.
  • the proportion of tin oxide is preferably 8-20% by weight.
  • 0.05 to 0.9% by weight of molybdenum oxide and 0.05 to 1.5% by weight of germanium oxide have proven to be preferred addition amounts. It is also possible to add about 0.2% by weight of tungsten oxide without losing the improved properties.
  • the materials based on AgSn0 2 with additions of molybdenum oxide and / or germanium oxide can be produced by powder metallurgy both by pressing and sintering individual contact pieces and by extruding sintered bolts.
  • Another special advantage of germanium oxide is that due to the solubility of germanium in silver, this additive can also be easily used for internally oxidized material.
  • Experimental concentrations of 0.1% Ge to AgSn 7.5 resulted in a uniform excretion of the metal oxides in the material. There was no formation of a covering layer.
  • germanium significantly accelerates the internal oxidation and that oxidation rates as with Ag / CdO can be achieved.
  • the maximum internally oxidizable base content is increased by adding germanium and thus the security against welding is improved.

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)
  • Conductive Materials (AREA)
  • Powder Metallurgy (AREA)

Claims (5)

1. Matériau pour contacts électriques, constitué par de l'argent, de l'oxyde d'étain et un ou plusieurs autres oxydes métalliques, matériau caractérisé en ce qu'il contient 0,05 à 4 % en poids d'oxyde de molybdène (Mo03) et/ou d'oxyde de garmanium (GeO2).
2. Matériau selon la revendication 1, caractérisé en ce que la proportion d'oxyde d'étain se monte à 8-20 % en poids.
3. Matériau selon les revendications 1 ou 2, caractérisé en ce que la proportion d'oxyde de molybdène (Mo03) se monte à 0,05-0,9 % en poids.
4. Matériau selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la proportion d'oxyde de germanium (GeO2) se monte à 0,05-1,5.% en poids.
5. Matériau selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'il contient environ 0,2 % en poids d'oxyde de tungstène (W03).
EP81110185A 1981-01-23 1981-12-05 Matériau pour contacts électriques Expired EP0056857B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81110185T ATE7979T1 (de) 1981-01-23 1981-12-05 Werkstoff fuer elektrische kontakte.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3102067 1981-01-23
DE19813102067 DE3102067A1 (de) 1981-01-23 1981-01-23 Werkstoff fuer elektrische kontakte

Publications (2)

Publication Number Publication Date
EP0056857A1 EP0056857A1 (fr) 1982-08-04
EP0056857B1 true EP0056857B1 (fr) 1984-06-13

Family

ID=6123147

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81110185A Expired EP0056857B1 (fr) 1981-01-23 1981-12-05 Matériau pour contacts électriques

Country Status (19)

Country Link
US (1) US4410491A (fr)
EP (1) EP0056857B1 (fr)
JP (1) JPS57143460A (fr)
AR (1) AR227957A1 (fr)
AT (1) ATE7979T1 (fr)
AU (1) AU544021B2 (fr)
BR (1) BR8200159A (fr)
CA (1) CA1183373A (fr)
CS (1) CS231185B2 (fr)
DE (2) DE3102067A1 (fr)
DK (1) DK149786C (fr)
ES (1) ES508715A0 (fr)
HU (1) HU186467B (fr)
MX (1) MX7462E (fr)
NO (1) NO157317C (fr)
PL (1) PL137714B1 (fr)
PT (1) PT74022B (fr)
YU (1) YU43508B (fr)
ZA (1) ZA82349B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4331526C3 (de) * 1992-09-16 2003-11-06 Ami Doduco Gmbh Werkstoff für elektrische Kontakte auf der Basis von Silber-Zinnoxid oder Silber-Zinkoxid und Verfahren zur Herstellung eines Verbundpulvers hierfür

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3232627A1 (de) * 1981-09-24 1983-04-07 Doduco KG Dr. Eugen Dürrwächter, 7530 Pforzheim Werkstoff fuer elektrische kontakte
DE3304637A1 (de) * 1983-02-10 1984-08-16 Siemens AG, 1000 Berlin und 8000 München Sinterkontaktwerkstoff fuer niederspannungsschaltgeraete
DE3305270A1 (de) * 1983-02-16 1984-08-16 Siemens AG, 1000 Berlin und 8000 München Sinterverbundwerkstoff fuer elektrische kontakte und verfahren zu seiner herstellung
EP0152606B1 (fr) * 1984-01-30 1987-09-09 Siemens Aktiengesellschaft Matériau de contact et procédé de préparation de pièces de contact
DE3435289A1 (de) * 1984-09-26 1986-04-03 Wilo-Werk Gmbh & Co Pumpen- Und Apparatebau, 4600 Dortmund Anschlusskasten fuer pumpenmotor
US4817695A (en) * 1987-12-02 1989-04-04 Wingert Philip C Electrical contact material of Ag, SnO2, GeO2 and In2 O.sub.3
US4904317A (en) * 1988-05-16 1990-02-27 Technitrol, Inc. Erosion resistant Ag-SnO2 electrical contact material
EP0645049B1 (fr) * 1992-06-10 1996-04-03 DODUCO GMBH + Co Dr. Eugen DÀ¼rrwächter Matiere pour contacts electriques a base d'oxyde d'etain et d'argent ou d'oxyde de zinc et d'argent
US5258052A (en) * 1992-06-18 1993-11-02 Advanced Metallurgy Incorporated Powder metallurgy silver-tin oxide electrical contact material
FR2893632B1 (fr) * 2005-11-18 2008-01-25 Commissariat Energie Atomique Revetement a base d'argent resistant a la sulfuration, procede de depot et utilisation
CN109252064B (zh) * 2018-10-15 2020-05-22 浙江工业大学 一种掺杂改性Ag/SnO2复合电接触材料及其制备方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3933485A (en) * 1973-07-20 1976-01-20 Chugai Denki Kogyo Kabushiki-Kaisha Electrical contact material
US3933486A (en) * 1974-02-12 1976-01-20 Chugai Denki Kogyo Kabushiki-Kaisha Silver-metal oxide composite and method of manufacturing the same
JPS51121795A (en) * 1975-04-17 1976-10-25 Nippon Tungsten Co Ltd Ag-tin oxide-system electric contact material
JPS523193A (en) * 1975-06-24 1977-01-11 Sumitomo Electric Ind Ltd Electric contact material
US4141727A (en) * 1976-12-03 1979-02-27 Matsushita Electric Industrial Co., Ltd. Electrical contact material and method of making the same
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
DE2933338C3 (de) * 1979-08-17 1983-04-28 Degussa Ag, 6000 Frankfurt Werkstoff für elektrische Kontakte und Verfahren zu seiner Herstellung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4331526C3 (de) * 1992-09-16 2003-11-06 Ami Doduco Gmbh Werkstoff für elektrische Kontakte auf der Basis von Silber-Zinnoxid oder Silber-Zinkoxid und Verfahren zur Herstellung eines Verbundpulvers hierfür

Also Published As

Publication number Publication date
PT74022A (de) 1981-12-01
AU7798681A (en) 1982-07-29
ES8305528A1 (es) 1983-04-01
NO814101L (no) 1982-07-26
DE3102067A1 (de) 1982-08-19
PL137714B1 (en) 1986-07-31
EP0056857A1 (fr) 1982-08-04
CS842681A2 (en) 1984-02-13
ZA82349B (en) 1982-12-29
MX7462E (es) 1988-12-22
US4410491A (en) 1983-10-18
NO157317B (no) 1987-11-16
NO157317C (no) 1988-02-24
DK149786C (da) 1987-04-13
PL234697A1 (fr) 1982-10-25
YU302681A (en) 1983-12-31
PT74022B (de) 1983-04-29
JPS57143460A (en) 1982-09-04
JPH0325493B2 (fr) 1991-04-08
YU43508B (en) 1989-08-31
HU186467B (en) 1985-08-28
CA1183373A (fr) 1985-03-05
AU544021B2 (en) 1985-05-16
ES508715A0 (es) 1983-04-01
DK21982A (da) 1982-07-24
DK149786B (da) 1986-09-29
DE3164233D1 (en) 1984-07-19
BR8200159A (pt) 1982-11-03
ATE7979T1 (de) 1984-06-15
CS231185B2 (en) 1984-10-15
AR227957A1 (es) 1982-12-30

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