EP0725154B1 - Sinterwerkstoff auf der Basis Silberzinnoxid für elektrische Kontakte und Verfahren zu dessen Herstellung - Google Patents
Sinterwerkstoff auf der Basis Silberzinnoxid für elektrische Kontakte und Verfahren zu dessen Herstellung Download PDFInfo
- Publication number
- EP0725154B1 EP0725154B1 EP96100814A EP96100814A EP0725154B1 EP 0725154 B1 EP0725154 B1 EP 0725154B1 EP 96100814 A EP96100814 A EP 96100814A EP 96100814 A EP96100814 A EP 96100814A EP 0725154 B1 EP0725154 B1 EP 0725154B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- oxide
- powder
- silver
- tin
- bismuth
- 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
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
- 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
-
- 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
-
- 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
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/059—Making alloys comprising less than 5% by weight of dispersed reinforcing phases
-
- 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 a powder metallurgy produced sintered material based on silver-tin oxide with additions of indium oxide and bismuth oxide for electrical Contacts for switching nominal currents between 20 and 100 Amps and a process for their manufacture.
- Silver / metal composite is the most common Silver / nickel used, the main area of application for lower currents. At high currents was until almost exclusively silver-cadmium oxide for some years used. However, due to environmental pollution tries to increase cadmium oxide through other oxides replace. In the meantime, tin oxide has been found in many Areas as an alternative to cadmium oxide.
- the silver-tin oxide composite shows a significantly lower burn-up rate than silver-cadmium oxide, which leads to a longer service life in the switchgear.
- the disadvantage of AgSn0 2 is that it tends to form a covering layer and thus to higher temperatures in the switchgear. With certain additives, such as WO 3 or MoO 3 , this problem could be dealt with. These materials have proven themselves extremely well in switching devices that have to withstand high thermal loads. With these additives, AgSnO 2 has proven itself particularly well in switchgear with nominal currents of more than 100 amps and under so-called AC4 load. With lower switching currents, however, the lifespan of these materials is relatively short.
- the AgSnO 2 WO 3 / MoO 3 material is manufactured by powder metallurgy using extrusion technology.
- the powder metallurgical production has the advantage that additives of any type and amount can be used. This allows the material to be specifically optimized for certain properties, such as welding force or heating.
- the combination of powder metallurgy with extrusion technology allows a particularly high level of economy in the manufacture of the contact pieces.
- An internally oxidized AgSnO 2 / In 2 O 3 material is also used.
- This material described in DE-OS 24 28 147, contains 5-10% SnO 2 and 1-6% In 2 O 3 .
- Internally oxidized materials have the disadvantage that the additives have to be selected with regard to the oxidation kinetics of the materials. A targeted change in the concentrations of the oxide additives to influence certain switching properties is often not possible due to the oxidation kinetics.
- the AgSnO 2 In 2 O 3 has the disadvantage, however, that it leads to high excess temperatures when switching.
- DE-OS 27 54 335 describes a contact material which contains 1.6 to 6.5 Bi 2 O 3 and 0.1 to 7.5 SnO 2 in addition to silver. This material can be produced both by internal oxidation and by powder metallurgy. Such high Bi 2 O 3 contents, however, lead to embrittlement, so that the material can only be produced by single sintering, but not by the more economical extrusion technology.
- the powder metallurgical production of contact materials based on silver-tin oxide by mixing the powders, cold isostatic pressing, sintering and extrusion Semi-finished product is for example from DE-OS 43 19 137 and DE-OS 43 31 526 known.
- Contact materials made of silver are known from US Pat. No. 4,141,727 known to contain bismuth tin oxide as a mixed oxide powder. Furthermore, the tin oxide powder is in DE-PS 29 52 128 before mixing with the silver powder at 900 to 1600 ° C annealed.
- one sintered material produced by powder metallurgy on the Based on silver-tin oxide with additions of indium oxide and Bismuth oxide for electrical contacts to develop one the lowest possible tendency to weld and the lowest possible Overtemperature when switching nominal currents between 20 and 100 amps shows and with AC3 load in switchgear has a lifespan similar to that of silver-cadmium oxide.
- This object is achieved in that he from 3.2 to 19.9% by weight of tin oxide, each 0.05 to 0.4% by weight Indium oxide and bismuth oxide, the rest is silver.
- This material shows in the current range from 20 to 100 Ampere excellent life with overtemperature, which are clearly below 100 ° C.
- tin oxide powder or the tin oxide powder together with the bismuth oxide powder Temperatures of 700 to 1400 ° C is annealed until more than 60% by weight of the tin oxide or the mixed oxide powder Have particle size of more than 1 micron.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- Dispersion Chemistry (AREA)
- Contacts (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Manufacture Of Switches (AREA)
Description
Claims (5)
- Pulvermetallurgisch hergesteller Sinterwerkstoff auf der Basis Silber-Zinnoxid mit Zusätzen Indiumoxid und Wismutoxid für elektrische Kontakte
dadurch gekennzeichnet,
daß er aus 3,2 bis 19,9 Gew.% Zinnoxid, je 0,05 bis 0,4 Gew.% Indiumoxid und Wismutoxid, Rest Silber besteht. - Verfahren zur Herstellung von Sinterwerkstoffen gemäß Anspruch 1, durch Mischen der Pulver, kaltisostatischem Pressen des Pulvergemisches, Sintern bei Temperaturen von 500 bis 940° C und Strangpressen zu Drähten oder Profilen,
dadurch gekennzeichnet,
daß mehr als 60 Gew.% des Zinnoxidpulvers vor dem Vermischen mit dem Silberpulver und den übrigen Oxidpulvern eine Teilchengröße von mehr als 1 µm aufweist. - Verfahren nach Anspruch 2, daß das Wismutoxidpulver mit dem Zinnoxidpulver thermisch zu Bi2Sn2O7-Mischoxidpulver umgesetzt wird, das zu mehr als 60 Gew.% eine Teilchengröße von mehr als 1 µm aufweist, und dieses Mischoxidpulver mit dem Silberpulver und dem Indiumoxidpulver gemischt wird.
- Verfahren nach Anspruch 2,
dadurch gekennzeichnet,
daß handelsübliches Zinnoxid bei Temperaturen von 700 bis 1400° C geglüht wird, bis mehr als 60 Gew.% des Pulvers eine Teilchengröße von mehr als 1 µm aufweist. - Verfahren nach Anspruch 3,
dadurch gekennzeichnet,
daß handelsübliches Zinnoxid zusammen mit handelsüblichem Wismutoxid bei Temperaturen von 700 bis 1400°C geglüht wird, bis mehr als 60 Gew.% des Mischoxidpulvers eine Teilchengröße von mehr als 1 µm aufweist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19503182A DE19503182C1 (de) | 1995-02-01 | 1995-02-01 | Sinterwerkstoff auf der Basis Silber-Zinnoxid für elektrische Kontakte und Verfahren zu dessen Herstellung |
| DE19503182 | 1995-02-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0725154A1 EP0725154A1 (de) | 1996-08-07 |
| EP0725154B1 true EP0725154B1 (de) | 1999-12-22 |
Family
ID=7752863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96100814A Expired - Lifetime EP0725154B1 (de) | 1995-02-01 | 1996-01-20 | Sinterwerkstoff auf der Basis Silberzinnoxid für elektrische Kontakte und Verfahren zu dessen Herstellung |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US5798468A (de) |
| EP (1) | EP0725154B1 (de) |
| JP (1) | JPH08239723A (de) |
| KR (1) | KR960031028A (de) |
| CN (1) | CN1065002C (de) |
| BR (1) | BR9600289A (de) |
| DE (2) | DE19503182C1 (de) |
| ES (1) | ES2141979T3 (de) |
| RU (1) | RU2144093C1 (de) |
| SG (1) | SG70549A1 (de) |
| TW (1) | TW460595B (de) |
Cited By (1)
| 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 (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10017282C2 (de) * | 2000-04-06 | 2002-02-14 | Omg Ag & Co Kg | Verfahren zur Herstellung von Verbundpulver auf Basis Siler-Zinnoxid und deren Verwendung zur Herstellung von Kontaktwerkstoffen |
| JP4089252B2 (ja) * | 2002-03-11 | 2008-05-28 | オムロン株式会社 | 直流負荷用接点構成および該構成を有した開閉器 |
| RU2219608C1 (ru) * | 2002-11-04 | 2003-12-20 | Овчинникова Марина Николаевна | Проволока из серебросодержащего материала для изготовления электрических контактов |
| EP1505164B1 (de) * | 2003-08-08 | 2009-04-29 | Mitsubishi Materials C.M.I. Corporation | Verfahren zur Herstellung eines elektrischen Kontaktes mit hoher elektrischer Leitfähigkeit für ein elektromagnetisches Relais und damit hergestellter elektrischer Kontakt |
| US7754280B2 (en) * | 2005-08-12 | 2010-07-13 | Umicore Ag & Co. Kg | Silver/carbon-based material and method for producing the same for contact material |
| RU2346069C1 (ru) * | 2007-06-15 | 2009-02-10 | Федеральное государственное образовательное учреждение высшего профессионального образования "Сибирский федеральный университет" | Способ получения серебряно-оловооксидного материала для электрических контактов |
| RU2367695C1 (ru) * | 2008-06-16 | 2009-09-20 | Федеральное государственное образовательное учреждение высшего профессионального образования "Сибирский федеральный университет" | Металлооксидный материал для разрывных электроконтактов |
| CN106133845B (zh) | 2014-04-02 | 2018-11-23 | 费罗公司 | 具有改善的玻璃强度性能的导电浆料 |
| CN104439249A (zh) * | 2014-12-30 | 2015-03-25 | 桂林电器科学研究院有限公司 | 一种片状银镍电触头材料的加工方法 |
| US10290434B2 (en) | 2016-09-23 | 2019-05-14 | Honeywell International Inc. | Silver metal oxide alloy and method of making |
| CN110468295B (zh) * | 2019-08-05 | 2021-04-09 | 广东顺德银合精工五金有限公司 | 一种强界面结合型Ag/SnO2电接触材料的制备方法 |
| CN114334503B (zh) * | 2021-12-24 | 2022-11-15 | 佛山市诺普材料科技有限公司 | 低温匀化制备银氧化锡电触头材料的方法及其材料 |
| CN114457253B (zh) * | 2021-12-30 | 2022-12-09 | 无锡日月合金材料有限公司 | 一种用于微动开关的银镍-氧化铋材料及其制造方法 |
| CN115491539B (zh) * | 2022-08-30 | 2023-04-18 | 昆明理工大学 | 一种增强AgSnO2电接触材料及其制备方法 |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3933485A (en) * | 1973-07-20 | 1976-01-20 | Chugai Denki Kogyo Kabushiki-Kaisha | Electrical contact material |
| US4141727A (en) * | 1976-12-03 | 1979-02-27 | Matsushita Electric Industrial Co., Ltd. | Electrical contact material and method of making the same |
| DE2929630C2 (de) * | 1979-07-21 | 1983-12-15 | Dornier System Gmbh, 7990 Friedrichshafen | Verfahren zur Herstellung von Silberpulver |
| DE2952128C2 (de) * | 1979-12-22 | 1984-10-11 | Degussa Ag, 6000 Frankfurt | Verfahren zur Vorbehandlung des Pulvers für gesintertes und stranggepreßtes Halbzeug aus Silber-Zinnoxid für elektrische Kontakte |
| 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 |
| 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 |
| DE3466122D1 (en) * | 1984-01-30 | 1987-10-15 | Siemens Ag | Contact material and production of electric contacts |
| 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 |
| DE3421759A1 (de) * | 1984-06-12 | 1985-12-12 | Siemens AG, 1000 Berlin und 8000 München | Sinterkontaktwerkstoff fuer niederspannungsschaltgeraete der energietechnik |
| JPS61114417A (ja) * | 1984-11-08 | 1986-06-02 | 中外電気工業株式会社 | Ag−SnO系複合電気接点材とその製法 |
| US4680162A (en) * | 1984-12-11 | 1987-07-14 | Chugai Denki Kogyo K.K. | Method for preparing Ag-SnO system alloy electrical contact material |
| US4695330A (en) * | 1985-08-30 | 1987-09-22 | Chugai Denki Kogyo K.K. | Method of manufacturing internal oxidized Ag-SnO system alloy contact materials |
| US4817695A (en) * | 1987-12-02 | 1989-04-04 | Wingert Philip C | Electrical contact material of Ag, SnO2, GeO2 and In2 O.sub.3 |
| DE58908359D1 (de) * | 1988-11-17 | 1994-10-20 | Siemens Ag | Sinterkontaktwerkstoff für Niederspannungsschaltgeräte der Energietechnik, insbesondere für Motorschütze. |
| EP0435655B1 (de) * | 1989-12-26 | 1998-02-25 | Sumitomo Metal Mining Company Limited | Verbundwerkstoff von Silber und Metalloxyd und Verfahren zur Herstellung desselben |
| EP0508055B1 (de) * | 1991-04-12 | 1997-05-02 | Mitsubishi Materials Corporation | Metalloxidmaterial auf Silberbasis für elektrische Kontakte |
| DE4319137A1 (de) * | 1992-06-10 | 1993-12-16 | Duerrwaechter E Dr Doduco | Werkstoff für elektrische Kontakte auf der Basis von Silber-Zinnoxid oder Siler-Zinkoxid |
| JP3441074B2 (ja) * | 1992-09-16 | 2003-08-25 | ドドウコ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング・ウント・コンパニー・ドクトル・オイゲン・デュルベヒテル | 銀−錫酸化物または銀−亜鉛酸化物を基剤とする電気接点のための部材及びその製造方法 |
-
1995
- 1995-02-01 DE DE19503182A patent/DE19503182C1/de not_active Expired - Fee Related
-
1996
- 1996-01-19 TW TW085100636A patent/TW460595B/zh active
- 1996-01-20 DE DE59603939T patent/DE59603939D1/de not_active Expired - Lifetime
- 1996-01-20 ES ES96100814T patent/ES2141979T3/es not_active Expired - Lifetime
- 1996-01-20 EP EP96100814A patent/EP0725154B1/de not_active Expired - Lifetime
- 1996-01-31 US US08/594,143 patent/US5798468A/en not_active Expired - Fee Related
- 1996-01-31 BR BR9600289A patent/BR9600289A/pt not_active IP Right Cessation
- 1996-01-31 KR KR1019960002278A patent/KR960031028A/ko not_active Ceased
- 1996-01-31 CN CN961013427A patent/CN1065002C/zh not_active Expired - Fee Related
- 1996-02-01 RU RU96102037A patent/RU2144093C1/ru not_active IP Right Cessation
- 1996-02-01 SG SG1996000788A patent/SG70549A1/en unknown
- 1996-02-01 JP JP8016749A patent/JPH08239723A/ja active Pending
Cited By (2)
| 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 |
|---|---|
| RU2144093C1 (ru) | 2000-01-10 |
| JPH08239723A (ja) | 1996-09-17 |
| ES2141979T3 (es) | 2000-04-01 |
| CN1137068A (zh) | 1996-12-04 |
| CN1065002C (zh) | 2001-04-25 |
| DE19503182C1 (de) | 1996-05-15 |
| KR960031028A (ko) | 1996-09-17 |
| SG70549A1 (en) | 2000-02-22 |
| EP0725154A1 (de) | 1996-08-07 |
| DE59603939D1 (de) | 2000-01-27 |
| US5798468A (en) | 1998-08-25 |
| TW460595B (en) | 2001-10-21 |
| BR9600289A (pt) | 1997-12-23 |
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