EP0774524A1 - Silver-iron material for electrical switch contacts - Google Patents
Silver-iron material for electrical switch contacts Download PDFInfo
- Publication number
- EP0774524A1 EP0774524A1 EP96117209A EP96117209A EP0774524A1 EP 0774524 A1 EP0774524 A1 EP 0774524A1 EP 96117209 A EP96117209 A EP 96117209A EP 96117209 A EP96117209 A EP 96117209A EP 0774524 A1 EP0774524 A1 EP 0774524A1
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- EP
- European Patent Office
- Prior art keywords
- oxide
- silver
- iron
- weight
- materials
- 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.)
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- 239000000463 material Substances 0.000 title claims abstract description 37
- OVMJVEMNBCGDGM-UHFFFAOYSA-N iron silver Chemical compound [Fe].[Ag] OVMJVEMNBCGDGM-UHFFFAOYSA-N 0.000 title claims abstract description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052742 iron Inorganic materials 0.000 claims abstract description 13
- 239000000654 additive Substances 0.000 claims abstract description 10
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052709 silver Inorganic materials 0.000 claims abstract description 8
- 239000004332 silver Substances 0.000 claims abstract description 8
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 3
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims abstract description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000292 calcium oxide Substances 0.000 claims abstract description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910000420 cerium oxide Inorganic materials 0.000 claims abstract description 3
- 229910000423 chromium oxide Inorganic materials 0.000 claims abstract description 3
- 229910003437 indium oxide Inorganic materials 0.000 claims abstract description 3
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 3
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims abstract description 3
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 3
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910001887 tin oxide Inorganic materials 0.000 claims abstract description 3
- MOFOBJHOKRNACT-UHFFFAOYSA-N nickel silver Chemical compound [Ni].[Ag] MOFOBJHOKRNACT-UHFFFAOYSA-N 0.000 abstract description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 3
- 229910001930 tungsten oxide Inorganic materials 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000012876 carrier material Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- CXOWYMLTGOFURZ-UHFFFAOYSA-N azanylidynechromium Chemical compound [Cr]#N CXOWYMLTGOFURZ-UHFFFAOYSA-N 0.000 description 1
- 229910000416 bismuth oxide Inorganic materials 0.000 description 1
- 238000009694 cold isostatic pressing Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910000484 niobium oxide Inorganic materials 0.000 description 1
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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
-
- 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
- H01H1/0237—Composite material having a noble metal as the basic material and containing oxides
Definitions
- the invention relates to silver-iron materials with further oxidic additives for electrical switch contacts.
- Contact materials for use in electrical power engineering must have high erosion resistance, low welding force and low contact resistance.
- the composite material silver-nickel has proven itself for switching currents of less than 100A. It has a high erosion resistance with very good excess temperature behavior.
- a disadvantage of this material is that nickel, particularly in the form of dusts, can have harmful effects on the human organism.
- Various iron has been proposed as an alternative to nickel.
- DE-OS 38 16 895 describes the use of a silver-iron material for electrical contacts which, in addition to silver, contains 3 to 30% by weight of iron and a total of 0.05 to 5% by weight of one or more of the additives manganese, Contains copper, zinc, antimony, bismuth oxide, molybdenum oxide, tungsten oxide and chromium nitride. These materials show a significantly better overtemperature behavior with a good service life compared to simple silver-iron materials, but are still below the values of corresponding silver-nickel materials.
- DE-OS 39 11 904 discloses contact materials which, in addition to silver, contain 5 to 50% by weight of iron and up to 5% by weight of one or May contain several of the oxides titanium oxide, zirconium oxide, niobium oxide, tantalum oxide, molybdenum oxide, tungsten oxide, manganese oxide, copper oxide and zinc oxide. From DE-OS 43 43 550 a contact material is known which contains iron oxide, zirconium oxide and tungsten oxide in addition to silver.
- EP-PS 0 586 411 describes a contact material made of silver with 1 to 50% by weight of iron and 0.01 to 5% by weight of rhenium.
- the materials consist of 4.6 to 15% by weight of iron and 0.05 to 5% by weight of one or more of the oxide additives magnesium oxide, calcium oxide, yttrium oxide, lanthanum oxide, cerium oxide, chromium oxide, iron oxide, Aluminum oxide, indium oxide, silicon oxide and tin oxide, the rest silver.
- the working substance preferably contains 0.2 to 1.5% by weight of the oxides mentioned.
- the iron content is between 4.6 and 10% by weight.
- the materials are resistance weldable.
- the materials can be manufactured economically and are comparable in their switching properties to the silver-nickel material, in particular the overtemperature shows values that the silver-nickel materials also achieve.
- the materials are manufactured by powder metallurgy by mixing the corresponding powders, cold isostatic pressing, sintering and extrusion to form wires or profiles.
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)
Abstract
Silber-Eisen-Werkstoffe für elektrische Schaltkontakte mit Eigenschaften, die den Silber-Nickel-Werkstoffen sehr nahe kommen, bestehen aus 4,6 bis 15 Gew.% Eisen und 0,05 bis 5 Gew.% von einem oder mehreren der oxidischen Zusätze Magnesiumoxid, Calziumoxid, Yttriumoxid, Lanthanoxid, Ceroxid, Chromoxid, Aluminiumoxid, Indiumoxid, Eisenoxid, Siliziumoxid und Zinnoxid, Rest Silber.Silver-iron materials for electrical switch contacts with properties that come very close to the silver-nickel materials consist of 4.6 to 15% by weight of iron and 0.05 to 5% by weight of one or more of the oxidic additives magnesium oxide , Calcium oxide, yttrium oxide, lanthanum oxide, cerium oxide, chromium oxide, aluminum oxide, indium oxide, iron oxide, silicon oxide and tin oxide, the rest silver.
Description
Die Erfindung betrifft Silber-Eisen-Werkstoffe mit weiteren oxidischen Zusätzen für elektrische Schaltkontakte.The invention relates to silver-iron materials with further oxidic additives for electrical switch contacts.
Kontaktwerkstoffe für den Einsatz in der elektrischen Energietechnik müssen eine hohe Abbrandfestigkeit, geringe Verschweißkraft und niedrigen Kontaktwiderstand aufweisen. Für luftoffene Schaltgeräte der Niederspannungstechnik hat sich für Schaltströme von kleiner als 100A der Verbundwerkstoff Silber-Nickel bewährt. Er besitzt eine hohe Abbrandfestigkeit bei sehr gutem Übertemperaturverhalten.Contact materials for use in electrical power engineering must have high erosion resistance, low welding force and low contact resistance. For air-tight switchgear in low-voltage technology, the composite material silver-nickel has proven itself for switching currents of less than 100A. It has a high erosion resistance with very good excess temperature behavior.
Ein Nachteil dieses Werkstoffes liegt jedoch darin, daß Nickel insbesondere in Form von Stäuben schädliche Auswirkungen auf den menschlichen Organismus haben kann. Als Alternative zu Nickel ist verschiedentlich Eisen vorgeschlagen worden.A disadvantage of this material, however, is that nickel, particularly in the form of dusts, can have harmful effects on the human organism. Various iron has been proposed as an alternative to nickel.
In der DE-OS 38 16 895 wird die Verwendung eines Silber-Eisen-Werkstoffs für elektrische Kontakte beschrieben, der neben Silber 3 bis 30 Gew.% Eisen und insgesamt 0,05 bis 5 Gew.% von einem oder mehreren der Zusätze Mangan, Kupfer, Zink, Antimon, Wismutoxid, Molybdänoxid, Wolframoxid und Chromnitrid enthält. Diese Werkstoffe zeigen ein deutlich besseres Übertemperaturverhalten bei guter Lebensdauer gegenüber einfachen Silber-Eisen-Werkstoffen, liegen jedoch noch unter den Werten entsprechender Silber-Nickel-Werkstoffen.DE-OS 38 16 895 describes the use of a silver-iron material for electrical contacts which, in addition to silver, contains 3 to 30% by weight of iron and a total of 0.05 to 5% by weight of one or more of the additives manganese, Contains copper, zinc, antimony, bismuth oxide, molybdenum oxide, tungsten oxide and chromium nitride. These materials show a significantly better overtemperature behavior with a good service life compared to simple silver-iron materials, but are still below the values of corresponding silver-nickel materials.
Das gilt auch für weitere bekannte Kontaktwerkstoffe auf der Basis Silber-Eisen. In der DE-OS 39 11 904 werden beispielsweise Kontaktwerkstoffe geoffenbart, die neben Silber 5 bis 50 Gew.% Eisen und bis zu 5 Gew.% eines oder mehrerer der Oxide Titanoxid, Zirkoniumoxid, Nioboxid, Tantaloxid, Molybdänoxid, Wolframoxid, Manganoxid, Kupferoxid und Zinkoxid enthalten kann. Aus der DE-OS 43 43 550 ist ein Kontaktwerkstoff bekannt, der neben Silber Eisenoxid, Zirkoniumoxid und Wolframoxid enthält. In der EP-PS 0 586 411 wird ein Kontaktwerkstoff aus Silber mit 1 bis 50 Gew.% Eisen und 0,01 bis 5 Gew.% Rhenium beschrieben.This also applies to other known contact materials based on silver-iron. DE-OS 39 11 904, for example, discloses contact materials which, in addition to silver, contain 5 to 50% by weight of iron and up to 5% by weight of one or May contain several of the oxides titanium oxide, zirconium oxide, niobium oxide, tantalum oxide, molybdenum oxide, tungsten oxide, manganese oxide, copper oxide and zinc oxide. From DE-OS 43 43 550 a contact material is known which contains iron oxide, zirconium oxide and tungsten oxide in addition to silver. EP-PS 0 586 411 describes a contact material made of silver with 1 to 50% by weight of iron and 0.01 to 5% by weight of rhenium.
Es war daher Aufgabe der vorliegenden Erfindung, Silber-Eisen-Werkstoffe mit weiteren oxidischen Zusätzen für elektrische Schaltkontakte zu finden, die in ihrer Verschweißneigung, Kontaktwiderstand und Lebensdauer den bekannten Silber-Nickel-Werkstoffen möglichst nahe kommen. Desweiteren muß der Werkstoff wirtschaftlich als Draht herstellbar sein und durch Widerstandschweißen auf Kontaktträgerstoffe aufgeschweißt werden können.It was therefore an object of the present invention to find silver-iron materials with further oxidic additives for electrical switch contacts, the welding tendency, contact resistance and service life of which are as close as possible to the known silver-nickel materials. Furthermore, the material must be economically producible as a wire and must be able to be welded onto contact carrier materials by resistance welding.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Werkstoffe aus 4,6 bis 15 Gew.% Eisen und 0,05 bis 5 Gew.% von einem oder mehreren der oxidischen Zusätze Magnesiumoxid, Calziumoxid, Yttriumoxid, Lanthanoxid, Ceroxid, Chromoxid, Eisenoxid, Aluminiumoxid, Indiumoxid, Siliziumoxid und Zinnoxid, Rest Silber, bestehen.This object is achieved according to the invention in that the materials consist of 4.6 to 15% by weight of iron and 0.05 to 5% by weight of one or more of the oxide additives magnesium oxide, calcium oxide, yttrium oxide, lanthanum oxide, cerium oxide, chromium oxide, iron oxide, Aluminum oxide, indium oxide, silicon oxide and tin oxide, the rest silver.
Vorzugsweise enthält der Werktoff 0,2 bis 1,5 Gew.% der genannten Oxide.The working substance preferably contains 0.2 to 1.5% by weight of the oxides mentioned.
Weiterhin ist von Vorteil, wenn der Eisengehalt zwischen 4,6 und 10 Gew.% liegt.It is also advantageous if the iron content is between 4.6 and 10% by weight.
Die besten Schalteigenschaften zeigen Werkstoffe mit 4,6 bis 6 Gew.% Eisen und 0,2 bis 1,2 Gew.% oxidische Bestandteile, Rest Silber.The best switching properties are shown by materials with 4.6 to 6% by weight iron and 0.2 to 1.2% by weight oxidic components, the rest silver.
Die bisher verwendeten Silber-Eisen-Werkstoffe enthalten üblicherweise ca. 10-20 Gew.% Eisen, wie auch der Silber-Nickel Vergleichswerkstoff 10-20 Gew.% Ni enthält. Im Vergleich zu Silber-Nickel Werkstoffen ist bei Silber-Eisen--Werkstoffen die Übertemperatur deutlich stärker von der Eisen-Konzentration abhängig.
Überraschenderweise hat sich nun gezeigt, daß durch Zusatz von Oxiden der genannten Art die Übertemperatur gesenkt werden kann. Gleichzeitig wird die Lebensdauer durch diese Zusätze verbessert. Die Werkstoffe sind widerstandsschweißbar. Die Verbindungen mit Kupfer-Trägerwerkstoffen weisen hohe Festigkeiten auf.The silver-iron materials used up to now usually contain approx. 10-20% by weight of iron, just as the silver-nickel comparison material contains 10-20% by weight of Ni. Compared to silver-nickel materials is at Silver-iron - materials the excess temperature much more dependent on the iron concentration.
Surprisingly, it has now been shown that the excess temperature can be reduced by adding oxides of the type mentioned. At the same time, these additives improve the service life. The materials are resistance weldable. The connections with copper carrier materials have high strength.
Die Werkstoffe lassen sich wirtschaftlich herstellen und sind in allen Schalteigenschaften mit dem Silber-Nickel-Werkstoff vergleichbar, insbesondere die Übertemperatur zeigt Werte, die auch die Silber-Nickel-Werkstoffe erzielen.The materials can be manufactured economically and are comparable in their switching properties to the silver-nickel material, in particular the overtemperature shows values that the silver-nickel materials also achieve.
Dies wurde durch elektrische Schaltversuche in serienmäßigen Schützen nachgewiesen. Die Versuche wurden in einem 5,5 KW-Schütz unter den Schaltbedingungen AC1 nach DIN VDE 0660 durchgeführt. Die Übertemperaturmessung erfolgte an den Kontaktbrücken bei einer Strombelastung von 20 A und wird jeweils nach 200.000 Schaltungen gemessen.
Die verwendeten Werkstoffe und die Ergebnisse der mit diesen Werkstoffen durchgeführten Schaltversuche nach einer Gesamtschaltbelastung von 600.000 Schaltspielen sind in folgender Tabelle enthalten und zeigen die Verbesserung der erfindungsgemäßen Werkstoffe hinsichtlich der Kontakterwärmung gegenüber den bekannten Werkstoffen AgNi20 und AgFe8,5Zn1,5.This has been proven by electrical switching tests in standard contactors. The tests were carried out in a 5.5 KW contactor under the switching conditions AC1 according to DIN VDE 0660. The overtemperature measurement was carried out on the contact bridges at a current load of 20 A and is measured after every 200,000 switching operations.
The materials used and the results of the switching tests carried out with these materials after a total switching load of 600,000 switching cycles are contained in the following table and show the improvement of the materials according to the invention in terms of contact heating compared to the known materials AgNi20 and AgFe8.5Zn1.5.
Die Herstellung der Werkstoffe erfolgt pulvermetallurgisch durch Mischen der entsprechenden Pulver, kaltisostatischem Pressen, Sintern und Strangpressen zu Drähten oder Profilen.
Claims (4)
dadurch gekennzeichnet,
daß sie aus 4,6 bis 15 Gew.% Eisen und 0,05 bis 5 Gew.% von einem oder mehreren der oxidischen Zusätze Magnesiumoxid, Calziumoxid, Yttriumoxid, Lanthanoxid, Ceroxid, Chromoxid, Aluminiumoxid, Indiumoxid, Eisenoxid, Siliziumoxid und Zinnoxid, Rest Silber, bestehen.Silver-iron materials with further oxidic additives for electrical switch contacts,
characterized by
that they consist of 4.6 to 15% by weight of iron and 0.05 to 5% by weight of one or more of the oxide additives magnesium oxide, calcium oxide, yttrium oxide, lanthanum oxide, cerium oxide, chromium oxide, aluminum oxide, indium oxide, iron oxide, silicon oxide and tin oxide, Rest of silver.
dadurch gekennzeichnet,
daß sie 0,2 bis 1,5 Gew.% oxidische Zusätze enthalten.Silver-iron materials according to claim 1,
characterized by
that they contain 0.2 to 1.5% by weight of oxidic additives.
dadurch gekennzeichnet,
daß der Eisengehalt zwischen 4,6 und 10 Gew.% liegt.Silver-iron materials according to claims 1 and 2,
characterized by
that the iron content is between 4.6 and 10% by weight.
dadurch gekennzeichnet,
daß sie 4,6 bis 6 Gew.% Eisen und 0,2 bis 1,2 Gew.% oxidische Zusätze enthalten.Silver-iron materials according to claims 1 to 3,
characterized by
that they contain 4.6 to 6% by weight of iron and 0.2 to 1.2% by weight of oxidic additives.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19543208A DE19543208C1 (en) | 1995-11-20 | 1995-11-20 | Silver@-iron@ material contg. oxide additives |
| DE19543208 | 1995-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0774524A1 true EP0774524A1 (en) | 1997-05-21 |
Family
ID=7777912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96117209A Withdrawn EP0774524A1 (en) | 1995-11-20 | 1996-10-26 | Silver-iron material for electrical switch contacts |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5808213A (en) |
| EP (1) | EP0774524A1 (en) |
| JP (1) | JPH09171733A (en) |
| DE (1) | DE19543208C1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR9710794A (en) * | 1996-08-01 | 1999-08-17 | Metalor Contacts Deutschland G | Process for preparing a product of a contact material based on silver contact material as well as product of contact material |
| TW517095B (en) * | 1999-04-23 | 2003-01-11 | Tanaka Precious Metal Ind Co L | Method for producing Ag-ZnO electric contact material and electric contact material produced thereby |
| CN1820335A (en) * | 2004-06-18 | 2006-08-16 | 田中贵金属工业株式会社 | Relay for sealed AC load and ag-base contact element material for use therein |
| JP5101504B2 (en) * | 2005-08-12 | 2012-12-19 | ユミコア・アクチエンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト | Silver-carbon based material and method for producing the same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3816895A1 (en) | 1987-06-06 | 1988-12-22 | Degussa | Use of a silver-iron material for electric contacts |
| DE3911904A1 (en) | 1988-04-16 | 1989-12-14 | Duerrwaechter E Dr Doduco | Powder-metallurgical process for producing a semifinished product for electric contacts from a silver-based composite with iron |
| JPH06100963A (en) * | 1992-09-22 | 1994-04-12 | Tokuriki Honten Co Ltd | Electrical contact material |
| DE4343550A1 (en) | 1993-12-20 | 1995-06-22 | Siemens Ag | Contact material based on silver for use in switching devices of power engineering |
| JPH07188702A (en) * | 1993-12-27 | 1995-07-25 | Matsushita Electric Works Ltd | Ag-base alloy powder and its production |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1139281B (en) * | 1954-07-14 | 1962-11-08 | Degussa | Composite material for electrical contacts |
| DE1539879B2 (en) * | 1966-11-19 | 1971-03-11 | Fa Dr Eugen Durrwachter Doduco, 7530 Pforzheim | BIMETAL CONTACT RIVET PRODUCED BY COLD PRESS WELDING OF SECTIONS OF WIRE |
| US3930849A (en) * | 1973-05-24 | 1976-01-06 | P. R. Mallory & Co., Inc. | Electrical contact material of the ag-cdo type and method of making same |
| US3951872A (en) * | 1973-12-03 | 1976-04-20 | P. R. Mallory & Co., Inc. | Electrical contact material |
| DE2659012C3 (en) * | 1976-12-27 | 1980-01-24 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Process for producing a sintered contact material from silver and embedded metal oxides |
| MX149630A (en) * | 1977-06-20 | 1983-12-06 | Chugai Electric Ind Co Ltd | IMPROVEMENTS IN METHOD TO MANUFACTURE AN ELECTRICAL CONTACT |
| YU46258B (en) * | 1987-06-06 | 1993-05-28 | Degussa Ag. | APPLICATION OF SILVER IRON MATERIAL FOR ELECTRICAL CONTACTS |
| US5246480A (en) * | 1988-04-20 | 1993-09-21 | Siemens Aktiengesellschaft | Sintered contact material based on silver for use in power engineering switch-gear, in particular for contact pieces in low-voltage switches |
| US4954170A (en) * | 1989-06-30 | 1990-09-04 | Westinghouse Electric Corp. | Methods of making high performance compacts and products |
| JPH0791608B2 (en) * | 1990-06-21 | 1995-10-04 | 松下電工株式会社 | Contact material and manufacturing method thereof |
| DE4117312A1 (en) * | 1991-05-27 | 1992-12-03 | Siemens Ag | SILVER-BASED CONTACT MATERIAL FOR USE IN SWITCHGEAR DEVICES OF ENERGY TECHNOLOGY AND METHOD FOR THE PRODUCTION OF CONTACT PIECES FROM THIS MATERIAL |
-
1995
- 1995-11-20 DE DE19543208A patent/DE19543208C1/en not_active Expired - Fee Related
-
1996
- 1996-10-26 EP EP96117209A patent/EP0774524A1/en not_active Withdrawn
- 1996-11-15 JP JP8305208A patent/JPH09171733A/en active Pending
- 1996-11-19 US US08/751,936 patent/US5808213A/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3816895A1 (en) | 1987-06-06 | 1988-12-22 | Degussa | Use of a silver-iron material for electric contacts |
| DE3911904A1 (en) | 1988-04-16 | 1989-12-14 | Duerrwaechter E Dr Doduco | Powder-metallurgical process for producing a semifinished product for electric contacts from a silver-based composite with iron |
| JPH06100963A (en) * | 1992-09-22 | 1994-04-12 | Tokuriki Honten Co Ltd | Electrical contact material |
| DE4343550A1 (en) | 1993-12-20 | 1995-06-22 | Siemens Ag | Contact material based on silver for use in switching devices of power engineering |
| JPH07188702A (en) * | 1993-12-27 | 1995-07-25 | Matsushita Electric Works Ltd | Ag-base alloy powder and its production |
Non-Patent Citations (3)
| Title |
|---|
| KLAR E.: "Metals Handbook, Ninth Edition, Vol. 7, Powder Metallurgy", ASM, METALS PARK, OHIO, US * |
| PATENT ABSTRACTS OF JAPAN vol. 018, no. 377 (C - 1225) 15 July 1994 (1994-07-15) * |
| PATENT ABSTRACTS OF JAPAN vol. 95, no. 007 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19543208C1 (en) | 1997-02-20 |
| JPH09171733A (en) | 1997-06-30 |
| US5808213A (en) | 1998-09-15 |
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