EP0338401A1 - Procédé de métallurgie des poudres pour obtenir un produit semi-fini utilisable pour des contacts électriques à partir d'un matériau composite à base d'argent et de fer - Google Patents
Procédé de métallurgie des poudres pour obtenir un produit semi-fini utilisable pour des contacts électriques à partir d'un matériau composite à base d'argent et de fer Download PDFInfo
- Publication number
- EP0338401A1 EP0338401A1 EP89106490A EP89106490A EP0338401A1 EP 0338401 A1 EP0338401 A1 EP 0338401A1 EP 89106490 A EP89106490 A EP 89106490A EP 89106490 A EP89106490 A EP 89106490A EP 0338401 A1 EP0338401 A1 EP 0338401A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- powder
- composite
- alloy
- silver
- composite material
- 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
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 74
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 27
- 239000004332 silver Substances 0.000 title claims abstract description 25
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 24
- 239000011265 semifinished product Substances 0.000 title claims abstract description 5
- 238000010310 metallurgical process Methods 0.000 title claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000000843 powder Substances 0.000 claims abstract description 74
- 239000000956 alloy Substances 0.000 claims abstract description 23
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 20
- 150000002739 metals Chemical class 0.000 claims abstract description 19
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 12
- 239000010937 tungsten Substances 0.000 claims abstract description 12
- 238000005118 spray pyrolysis Methods 0.000 claims abstract description 9
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 6
- 150000001247 metal acetylides Chemical class 0.000 claims abstract description 6
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 6
- 239000010936 titanium Substances 0.000 claims abstract description 6
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 6
- 239000011701 zinc Substances 0.000 claims abstract description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 5
- 239000011733 molybdenum Substances 0.000 claims abstract description 5
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 5
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 4
- 239000010955 niobium Substances 0.000 claims abstract description 4
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 22
- 239000000470 constituent Substances 0.000 claims description 14
- 239000010949 copper Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 238000001556 precipitation Methods 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 238000000889 atomisation Methods 0.000 claims description 4
- 229910052845 zircon Inorganic materials 0.000 claims description 4
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 3
- 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 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 239000002075 main ingredient Substances 0.000 claims 1
- 230000001590 oxidative effect Effects 0.000 claims 1
- 238000005096 rolling process Methods 0.000 claims 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052748 manganese Inorganic materials 0.000 abstract description 3
- 239000011572 manganese Substances 0.000 abstract description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract 1
- 229910052726 zirconium Inorganic materials 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 7
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 7
- 239000007864 aqueous solution Substances 0.000 description 5
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- IYRDVAUFQZOLSB-UHFFFAOYSA-N copper iron Chemical compound [Fe].[Cu] IYRDVAUFQZOLSB-UHFFFAOYSA-N 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- OVMJVEMNBCGDGM-UHFFFAOYSA-N iron silver Chemical compound [Fe].[Ag] OVMJVEMNBCGDGM-UHFFFAOYSA-N 0.000 description 2
- GXBKELQWVXYOPN-UHFFFAOYSA-N iron tungsten Chemical compound [W][Fe][W] GXBKELQWVXYOPN-UHFFFAOYSA-N 0.000 description 2
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 2
- 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 2
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229910001961 silver nitrate Inorganic materials 0.000 description 2
- UYKQQBUWKSHMIM-UHFFFAOYSA-N silver tungsten Chemical compound [Ag][W][W] UYKQQBUWKSHMIM-UHFFFAOYSA-N 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229910001930 tungsten oxide Inorganic materials 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- QIJNJJZPYXGIQM-UHFFFAOYSA-N 1lambda4,2lambda4-dimolybdacyclopropa-1,2,3-triene Chemical compound [Mo]=C=[Mo] QIJNJJZPYXGIQM-UHFFFAOYSA-N 0.000 description 1
- 241001136792 Alle Species 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910039444 MoC Inorganic materials 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 150000001722 carbon compounds Chemical class 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- MOFOBJHOKRNACT-UHFFFAOYSA-N nickel silver Chemical compound [Ni].[Ag] MOFOBJHOKRNACT-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
- 230000008092 positive effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- 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
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/30—Making metallic powder or suspensions thereof using chemical processes with decomposition of metal compounds, e.g. by pyrolysis
-
- 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
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
- B22F9/26—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions using gaseous reductors
-
- 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
- C22C1/0466—Alloys based on noble metals
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
- H01H11/048—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by powder-metallurgical processes
Definitions
- the invention is based on a powder-metallurgical method for producing a semi-finished product for electrical contacts from a composite material based on silver 5 to 50 wt .-% iron as the first secondary component and 0 to 5% by weight of a second secondary constituent from one or more substances from the group which contains the metals titanium, zircon, niobium, tantalum, molybdenum, tungsten, manganese, copper and zinc, their oxides and their carbides, and the rest of silver as the main component, which is disclosed in the older, but not prepublished DE-A-38 16 895.
- the individual constituents of the composite material are mixed with one another in powder form, pressed into shaped bodies and sintered, that is to say produced by a conventional powder metallurgical process.
- the composite material cannot be produced by melt metallurgy, because iron is not significantly soluble in silver even in the molten state.
- the invention has for its object to find a way in which the frequency of such spontaneously occurring increases in contact resistance can be reduced.
- the alloy or composite powder by adding compounds present in aqueous solution for the alloying or ver Metals provided in the powder are pyrolytically decomposed by the process of spray pyrolysis.
- the method of spray pyrolysis is described, for example, in US Pat. No. 3,510,291, in EP 0 012 202 A1 and in DE 29 29 630 C2. Salts of the metals intended for the alloy or composite powder are dissolved in a liquid and the solution is atomized in a hot reactor or in a flame, so that the solvent evaporates suddenly, at a temperature below the melting temperature of the dissolved Metals lies. The sudden evaporation of the solvent results in composite powder particles in which the metals are bound together in a very fine and uniform distribution.
- the composite powders are usually created by spray pyrolysis with particles that are smaller than 100 ⁇ m (diameter). For the process according to the invention, preference is given to using powders whose particles are not larger than 40 ⁇ m. In the composite powder produced by spray pyrolysis, the individual constituents are predominantly in the form of 0.1 ⁇ m to 1 ⁇ m (diameter) large particles which are connected to one another. The use of such finely structured powder particles favors the formation of the desired properties of the contact pieces (low erosion, low tendency to weld, consistently low contact resistance).
- the spray-pyrolytically produced composite powder can contain not only metallic components, but also oxides or carbides if the oxide-forming or carbide-forming metals are added to the solution to be sprayed from the outset in the form of a soluble salt.
- the atmosphere In order for oxides or carbides to form in the hot atmosphere in which the metal salt solution is sprayed, the atmosphere must of course contain free oxygen or oxygen in a reactive compound or a gaseous carbon compound, for example a gaseous hydrocarbon, with which the spray pyrolysis is used initially formed, reactive metals can react with the formation of oxide or carbide.
- the oxidic or carbidic constituents that may be provided bring about, in part, a lowering of the contact point temperature in switching operation and, in part, an extension of the service life of the contact pieces not only in the case of small and medium current loads, but also in the heavy load range, as described in IEC standard 158-1 for AC4 Test conditions is specified (switch-off current equals switch-on current).
- switch-off current equals switch-on current.
- Molybdenum oxide, molybdenum carbide, tungsten oxide and tungsten carbide work even in small quantities (in the order of magnitude from 0.1% by weight).
- Alloy powders and composite powders that can be used in the process according to the invention can be produced not only by spray pyrolysis, but also in other ways, for example by chemical mixed precipitation of the metals intended for the alloy or composite powders from a solution of their salts or by atomizing of molten metals. Chemical mixed precipitation is an option for the production of composite powders from components that can be dissolved and chemically precipitated under similar conditions.
- the atomization of molten metals is primarily considered for the production of alloy or composite powders from metals which are soluble in one another at least in the molten state in the quantitative ratios of interest here, which applies to iron pairings with most of the metals intended for the second secondary constituent;
- manganese is also firmly soluble in an amount of up to a few percent, whereas titanium and zircon in silver are not soluble in the solid state, but are to a certain extent soluble in the molten state.
- a composite powder can only be formed by atomization if the molten metals are mixed intensively with one another by stirring or if the spray jets of the molten metals are allowed to penetrate one another.
- Alloy or composite powders obtained by mixed precipitation or atomization can subsequently be subjected to an internal process Undergo oxidation and thereby produce an oxide composite powder or carburize and thereby produce a carbide-containing composite powder.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Contacts (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3812686 | 1988-04-16 | ||
| DE3812686 | 1988-04-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0338401A1 true EP0338401A1 (fr) | 1989-10-25 |
| EP0338401B1 EP0338401B1 (fr) | 1995-09-27 |
Family
ID=6352116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89106490A Expired - Lifetime EP0338401B1 (fr) | 1988-04-16 | 1989-04-12 | Procédé de métallurgie des poudres pour obtenir un produit semi-fini utilisable pour des contacts électriques à partir d'un matériau composite à base d'argent et de fer |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0338401B1 (fr) |
| DE (1) | DE58909449D1 (fr) |
| ES (1) | ES2080052T3 (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992022079A1 (fr) * | 1991-05-27 | 1992-12-10 | Siemens Aktiengesellschaft | Materiau de contact a base d'argent pour l'utilisation dans des appareils de commutation en technologie des courants forts, ainsi que procede pour la fabrication de pieces de contact en ce materiau |
| WO2006010572A1 (fr) * | 2004-07-24 | 2006-02-02 | Ami Doduco Gmbh | Tole de desionisation pour une chambre d'extinction d'arc |
| JP2010280971A (ja) * | 2009-06-05 | 2010-12-16 | Mabuchi Motor Co Ltd | 摺動接点材料及びクラッド複合材並びにモーター |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102114546A (zh) * | 2011-03-29 | 2011-07-06 | 兰州金川新材料科技股份有限公司 | 一种球形银粉的制备方法 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE643567C (de) * | 1931-12-25 | 1937-04-12 | Molybdenum Comp Nv | Verfahren zur Herstellung von Zwei- oder Mehrstoffkoerpern |
| GB563511A (en) * | 1942-02-25 | 1944-08-17 | Mallory Metallurg Prod Ltd | Improvements in and relating to electric contacting elements |
| DE888178C (de) * | 1943-04-04 | 1953-08-31 | Degussa | Auf pulvermetallurgischem Wege hergestellter Kontaktwerkstoff aus Metallen mit guter elektrischer Leitfaehigkeit und einer Hartstoffkomponente |
| GB771705A (en) * | 1954-05-14 | 1957-04-03 | Gen Electric | Improvements in electrical contact material and methods of making it |
| DE1029571B (de) * | 1956-07-13 | 1958-05-08 | Siemens Ag | Verfahren zur Herstellung eines Sinterverbundwerkstoffes, insbesondere fuer elektrische Kontakte |
| GB1489545A (en) * | 1976-05-20 | 1977-10-19 | Meidensha Electric Mfg Co Ltd | Electrical contact materials for vacuum switches |
| EP0012202A1 (fr) * | 1978-12-14 | 1980-06-25 | DORNIER SYSTEM GmbH | Procédé de fabrication de poudres métalliques |
| DE2929630A1 (de) * | 1979-07-21 | 1981-01-29 | Dornier System Gmbh | Werkstoffpulver fuer elektrische kontakte und verfahren zu seiner herstellung |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| YU46258B (sh) * | 1987-06-06 | 1993-05-28 | Degussa Ag. | Primena srebrno gvozdenog materijala za električne kontakte |
-
1989
- 1989-04-12 EP EP89106490A patent/EP0338401B1/fr not_active Expired - Lifetime
- 1989-04-12 DE DE58909449T patent/DE58909449D1/de not_active Expired - Fee Related
- 1989-04-12 ES ES89106490T patent/ES2080052T3/es not_active Expired - Lifetime
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE643567C (de) * | 1931-12-25 | 1937-04-12 | Molybdenum Comp Nv | Verfahren zur Herstellung von Zwei- oder Mehrstoffkoerpern |
| GB563511A (en) * | 1942-02-25 | 1944-08-17 | Mallory Metallurg Prod Ltd | Improvements in and relating to electric contacting elements |
| DE888178C (de) * | 1943-04-04 | 1953-08-31 | Degussa | Auf pulvermetallurgischem Wege hergestellter Kontaktwerkstoff aus Metallen mit guter elektrischer Leitfaehigkeit und einer Hartstoffkomponente |
| GB771705A (en) * | 1954-05-14 | 1957-04-03 | Gen Electric | Improvements in electrical contact material and methods of making it |
| DE1029571B (de) * | 1956-07-13 | 1958-05-08 | Siemens Ag | Verfahren zur Herstellung eines Sinterverbundwerkstoffes, insbesondere fuer elektrische Kontakte |
| GB1489545A (en) * | 1976-05-20 | 1977-10-19 | Meidensha Electric Mfg Co Ltd | Electrical contact materials for vacuum switches |
| EP0012202A1 (fr) * | 1978-12-14 | 1980-06-25 | DORNIER SYSTEM GmbH | Procédé de fabrication de poudres métalliques |
| DE2929630A1 (de) * | 1979-07-21 | 1981-01-29 | Dornier System Gmbh | Werkstoffpulver fuer elektrische kontakte und verfahren zu seiner herstellung |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992022079A1 (fr) * | 1991-05-27 | 1992-12-10 | Siemens Aktiengesellschaft | Materiau de contact a base d'argent pour l'utilisation dans des appareils de commutation en technologie des courants forts, ainsi que procede pour la fabrication de pieces de contact en ce materiau |
| US5422065A (en) * | 1991-05-27 | 1995-06-06 | Siemens Aktiengesellschaft | Silver-based contact material for use in power-engineering switchgear, and a method of manufacturing contacts made of this material |
| WO2006010572A1 (fr) * | 2004-07-24 | 2006-02-02 | Ami Doduco Gmbh | Tole de desionisation pour une chambre d'extinction d'arc |
| JP2010280971A (ja) * | 2009-06-05 | 2010-12-16 | Mabuchi Motor Co Ltd | 摺動接点材料及びクラッド複合材並びにモーター |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0338401B1 (fr) | 1995-09-27 |
| DE58909449D1 (de) | 1995-11-02 |
| ES2080052T3 (es) | 1996-02-01 |
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