EP0118708A1 - Matériau de contact fritté pour appareillages interrupteurs à basse tension - Google Patents

Matériau de contact fritté pour appareillages interrupteurs à basse tension Download PDF

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Publication number
EP0118708A1
EP0118708A1 EP84100927A EP84100927A EP0118708A1 EP 0118708 A1 EP0118708 A1 EP 0118708A1 EP 84100927 A EP84100927 A EP 84100927A EP 84100927 A EP84100927 A EP 84100927A EP 0118708 A1 EP0118708 A1 EP 0118708A1
Authority
EP
European Patent Office
Prior art keywords
content
mass
cdo
contact material
mass content
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
EP84100927A
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German (de)
English (en)
Other versions
EP0118708B1 (fr
Inventor
Horst Prof. Dr. Schreiner
Bernhard Rothkegel
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.)
Siemens AG
Original Assignee
Siemens AG
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Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6190546&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0118708(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT84100927T priority Critical patent/ATE24628T1/de
Publication of EP0118708A1 publication Critical patent/EP0118708A1/fr
Application granted granted Critical
Publication of EP0118708B1 publication Critical patent/EP0118708B1/fr
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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
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • B22F2009/0824—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid
    • B22F2009/0828—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid with water
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps

Definitions

  • the invention relates to a sintered contact material for low-voltage switching devices in power engineering made of AgSn0 2 with at least two further metal oxide additives.
  • contact materials based on AgCd0 with Cd0 as the main active component have proven to be particularly advantageous. These contact materials show a small burn-up in the arc, a low welding force and a low heating with continuous current supply.
  • the aim is to use contact materials with other main metal oxide additives such as Sn0 2 , ZnO, In 2 O 3 , Cu0 etc. to replace.
  • Contact materials made of AgSnO 2 without additional metal oxide additives could not meet all the requirements regarding the contact properties.
  • AgSn0 2 contact materials with further metal oxide additives such as In 2 0 3 , Bi 2 O 3 are known.
  • the invention has for its object to improve the known AgSn0 2 materials with further metal oxide additives in such a way that the concentrations of the further metal oxide additives are significantly lower and in particular the content of toxic materials.
  • the object is achieved in that Bi203, Cu0 and optionally Cd0 are provided as further metal oxides and in that the total metal oxide content is between 10 and 25 vol.% With a Sn0 2 proportion ⁇ 70 vol.
  • a total metal oxide content between 15 to 20% by volume has proven to be particularly advantageous.
  • To be particularly advantageous according to the invention has a AgSn0 2 Bi 2 0 3 Cu0 material proved with a Ag - content of 87.95% -Massengehalt, a SnO 2 content of 9.97% -Massengehalt, a Bi 2 0 3 Content of 0.98% by mass and a CuO content of 1.10% by mass.
  • Another material according to the invention consists of AgSnO 2 Bi 2 O 3 CuOCdO with a Bi 2 0 3 content between 0.5 and 2% mass content, a CuO content between 0.5 and 1.5% mass content and one CdO content between 0.05 and 2% mass content, in particular with an Ag content of 87.89% mass content, an Sn0 2 content of 9.92% mass content, a Bi 2 0 3 content of 1, 1% mass content, a CuO content of 1.2% mass content and a CdO content of 0.3% mass content or with an Ag content of 81.42% mass content, an Sn0 2 content of 13, 09% mass content, a Bi 2 0 3 content of 2.0% mass content, a CuO content of 1.5% mass content and a CdO content of 2.0% mass content.
  • An alloy of AgSnBiCu of the specified composition is melted from 90.15% mass content of single-grain silver grains, 8.05% mass content of tin grains, 0.90% mass content of metallic bismuth as fragments and 0.90% mass content of copper in the form of rods .
  • An alloy powder of the same composition is produced from it by pressure atomization with water. After drying, the powder fraction smaller than 200 ⁇ m is sieved off. This portion is internally oxidized in air between 500 and 800 ° C, after which a composite powder of AgSn0 2 Bi 2 0 3 CuO with the composition 87.95% mass content Ag, 9.97% mass content SnO 2 , 0.98% mass content Bi 2 0 3 and 1.10% mass content Cu0 is obtained.
  • the composite powder can be used to produce contact pieces by pressing in a die with 600 MPa. For secure connection technology by brazing, it is useful to press a second layer of pure silver powder together with the contact layer when pressing the composite powder.
  • the contact pieces are sintered at 850 ° C for one hour in air.
  • the contact pieces are compacted by hot pressing at 650 ° C with 800 MPa. Further compaction and consolidation is achieved by a second sintering. To reach 850 ° C for one hour in air and a subsequent further cold compression.
  • the contact properties of such contact pieces were measured on a test switch.
  • the burn-up values were about 25% better than an extruded AgSn0 2 quality with the same oxide content.
  • In the sweat force values were 50% lower F S99.9 values and 10% lower values in contact resistance.
  • the structure of the contact material is very fine and even.
  • the dried powder mixture is compacted with 300 MPa moldings.
  • the contact pieces are compacted by hot pressing at 650 ° C with 800 MPa.
  • a further compression can be achieved by a further heat treatment at 850 ° C for half an hour in air or nitrogen and a subsequent further cold or warm compression.
  • An alloy of AgSnBiCuCd with 90.06% mass content Ag, 7.67% mass content Sn, 1.01% mass content Bi, 0.98% mass content Cu and 0.27% mass content Cd becomes a particle size powder ⁇ 200 ⁇ m, for example by pressure spraying with water.
  • a composite powder made of AgSnO 2 Bi 2 O 3 CuOCdO with 87.89% mass content Ag, 9.92% mass content Sn0 2 , 1.1% mass content Bi203, 1.2% mass content Cu0 and 0.3% mass content Cd0 obtained.
  • the internal oxidation is carried out during an annealing treatment in air between 500 and 800 ° C. The time is chosen so that complete internal oxidation is achieved.
  • a two-layer powder compact is produced from the composite powder as in Example 1.
  • the compact is solidified by sintering and the residual porosity of the contact piece is reduced by hot or cold post-compression.
  • the contact quality achieved in this way also has the same good contact properties with the same composition as in Example 2.
  • a micrograph shows the uniform globular oxide deposits in the silver base metal.
  • the silver-tin-oxide contact materials with the further oxide additives Bi203, Cu0 and optionally Cd0 according to the invention represent one of the multitude of possibilities Special material selection with a very specific composition.
  • the contact materials with CdO as an oxide additive the CdO content could be reduced by 1 to 2 orders of magnitude.

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)
  • Powder Metallurgy (AREA)
  • Manufacture Of Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Conductive Materials (AREA)
EP84100927A 1983-02-10 1984-01-30 Matériau de contact fritté pour appareillages interrupteurs à basse tension Expired EP0118708B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84100927T ATE24628T1 (de) 1983-02-10 1984-01-30 Sinterkontaktwerkstoff fuer niederspannungsschaltgeraete.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833304637 DE3304637A1 (de) 1983-02-10 1983-02-10 Sinterkontaktwerkstoff fuer niederspannungsschaltgeraete
DE3304637 1983-02-10

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP85114864.3 Division-Into 1985-11-22

Publications (2)

Publication Number Publication Date
EP0118708A1 true EP0118708A1 (fr) 1984-09-19
EP0118708B1 EP0118708B1 (fr) 1986-12-30

Family

ID=6190546

Family Applications (2)

Application Number Title Priority Date Filing Date
EP85114864A Expired - Lifetime EP0182386B1 (fr) 1983-02-10 1984-01-30 Procédé de fabrication de pièces de contact
EP84100927A Expired EP0118708B1 (fr) 1983-02-10 1984-01-30 Matériau de contact fritté pour appareillages interrupteurs à basse tension

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP85114864A Expired - Lifetime EP0182386B1 (fr) 1983-02-10 1984-01-30 Procédé de fabrication de pièces de contact

Country Status (5)

Country Link
US (1) US4681702A (fr)
EP (2) EP0182386B1 (fr)
JP (1) JPS59148215A (fr)
AT (2) ATE24628T1 (fr)
DE (3) DE3304637A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3421758A1 (de) * 1984-06-12 1985-12-12 Siemens AG, 1000 Berlin und 8000 München Sinterkontaktwerkstoff fuer niederspannungsschaltgeraete der energietechnik und verfahren zu dessen herstellung
JPH06104873B2 (ja) * 1986-07-08 1994-12-21 富士電機株式会社 銀―金属酸化物系接点用材料及びその製造方法
JPH03504615A (ja) * 1988-03-26 1991-10-09 ドドウコ・ゲーエムベーハー＋コンパニー・ドクトル・オイゲン・デュルベヒテル 銀‐錫酸化物系複合材料から成る電気接点用半製品および粉末冶金によるその製法
EP0369282B1 (fr) * 1988-11-17 1995-06-14 Siemens Aktiengesellschaft Matériau de contact fritté dans appareillages interrupteurs à basse tension de la technique de l'énergie, spécialement pour des contacteurs
DE58908359D1 (de) * 1988-11-17 1994-10-20 Siemens Ag Sinterkontaktwerkstoff für Niederspannungsschaltgeräte der Energietechnik, insbesondere für Motorschütze.
FR2639466B1 (fr) * 1988-11-22 1991-02-15 Telemecanique Procede de preparation d'un materiau de contact electrique et procede de fabrication d'un element de contact incorporant un tel materiau
US4952353A (en) * 1989-12-28 1990-08-28 Gte Laboratories Incorporated Hot isostatic pressing
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
DE19503182C1 (de) * 1995-02-01 1996-05-15 Degussa Sinterwerkstoff auf der Basis Silber-Zinnoxid für elektrische Kontakte und Verfahren zu dessen Herstellung
JP4892327B2 (ja) * 2006-11-29 2012-03-07 株式会社富士機械工作所 管体切断装置及び管体切断方法
DE102008056263A1 (de) 2008-11-06 2010-05-27 Ami Doduco Gmbh Verfahren zur Herstellung eines Halbzeugs und Halbzeug für elektrische Kontakte sowie Kontaktstück
DE102008056264A1 (de) 2008-11-06 2010-05-27 Ami Doduco Gmbh Verfahren zur Herstellung eines Halbzeugs und Halbzeug für elektrische Kontakte sowie Kontaktstück
CN104498764A (zh) * 2014-12-31 2015-04-08 靖江市海源有色金属材料有限公司 一种电接触材料及制备方法
EP3116009B1 (fr) * 2015-07-07 2019-08-28 Siemens Aktiengesellschaft Procédé pour la fabrication d'un contact électrique

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2754335A1 (de) * 1976-12-03 1978-06-08 Matsushita Electric Ind Co Ltd Elektrischer kontaktwerkstoff und verfahren zu dessen herstellung
FR2433054A1 (fr) * 1978-08-11 1980-03-07 Chugai Electric Ind Co Ltd Alliages d'ag-sn-bi a oxydation interne pour contacts electriques ameliores
GB2055398A (en) * 1979-08-01 1981-03-04 Chugai Electric Ind Co Ltd Electrical contact materials of internally oxidized Ag-Sn-Bi alloy

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH588152A5 (fr) * 1972-12-11 1977-05-31 Siemens Ag
JPS50123519A (fr) * 1974-02-12 1975-09-29
GB1507854A (en) * 1974-04-01 1978-04-19 Mallory & Co Inc P R Electric contact materials
JPS51121795A (en) * 1975-04-17 1976-10-25 Nippon Tungsten Co Ltd Ag-tin oxide-system electric contact material
JPS596903B2 (ja) * 1975-05-21 1984-02-15 タナカキキンゾクコウギヨウ カブシキガイシヤ 複合電気接点材料
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
JPS608301B2 (ja) * 1977-01-21 1985-03-01 田中貴金属工業株式会社 Ａｇ−酸化物系複合接点材料の製造方法
JPS6018735B2 (ja) * 1977-12-15 1985-05-11 松下電器産業株式会社 電気接点材料
US4150982A (en) * 1978-03-13 1979-04-24 Chugai Denki Kogyo Kabushiki-Kaisha AG-Metal oxides electrical contact materials containing internally oxidized indium oxides and/or tin oxides
JPS5543775A (en) * 1978-09-21 1980-03-27 Sumitomo Electric Industries Electric contact material and method of fabricating same
US4294616A (en) * 1979-01-02 1981-10-13 Gte Products Corporation Electrical contacts
JPS5760042A (en) * 1980-09-26 1982-04-10 Matsushita Electric Ind Co Ltd Electrical contact material
DE3102067A1 (de) * 1981-01-23 1982-08-19 Degussa Ag, 6000 Frankfurt Werkstoff fuer elektrische kontakte
JPS57134532A (en) * 1981-02-12 1982-08-19 Chugai Electric Ind Co Ltd Electrical contact material of silver-tin-bismuth alloy
DE3146972A1 (de) * 1981-11-26 1983-06-01 Siemens AG, 1000 Berlin und 8000 München Verfahren zum herstellen von formteilen aus cadmiumfreien silber-metalloxid-verbundwerkstoffen fuer elektrische kontaktstuecke
DE3305270A1 (de) * 1983-02-16 1984-08-16 Siemens AG, 1000 Berlin und 8000 München Sinterverbundwerkstoff fuer elektrische kontakte und verfahren zu seiner herstellung
DE3466122D1 (en) * 1984-01-30 1987-10-15 Siemens Ag Contact material and production of electric contacts

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2754335A1 (de) * 1976-12-03 1978-06-08 Matsushita Electric Ind Co Ltd Elektrischer kontaktwerkstoff und verfahren zu dessen herstellung
FR2433054A1 (fr) * 1978-08-11 1980-03-07 Chugai Electric Ind Co Ltd Alliages d'ag-sn-bi a oxydation interne pour contacts electriques ameliores
GB2055398A (en) * 1979-08-01 1981-03-04 Chugai Electric Ind Co Ltd Electrical contact materials of internally oxidized Ag-Sn-Bi alloy

Also Published As

Publication number Publication date
DE3483479D1 (de) 1990-11-29
DE3461872D1 (en) 1987-02-05
EP0182386A3 (en) 1987-01-14
ATE24628T1 (de) 1987-01-15
ATE57789T1 (de) 1990-11-15
DE3304637A1 (de) 1984-08-16
EP0182386B1 (fr) 1990-10-24
EP0118708B1 (fr) 1986-12-30
JPS59148215A (ja) 1984-08-24
JPH0377265B2 (fr) 1991-12-10
US4681702A (en) 1987-07-21
EP0182386A2 (fr) 1986-05-28

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