DE3303170A1 - Verfahren zum herstellen von kupfer-chrom-schmelzlegierungen als kontaktwerkstoff fuer vakuum-leistungsschalter - Google Patents
Verfahren zum herstellen von kupfer-chrom-schmelzlegierungen als kontaktwerkstoff fuer vakuum-leistungsschalterInfo
- Publication number
- DE3303170A1 DE3303170A1 DE19833303170 DE3303170A DE3303170A1 DE 3303170 A1 DE3303170 A1 DE 3303170A1 DE 19833303170 DE19833303170 DE 19833303170 DE 3303170 A DE3303170 A DE 3303170A DE 3303170 A1 DE3303170 A1 DE 3303170A1
- Authority
- DE
- Germany
- Prior art keywords
- starting material
- copper
- chromium
- melted
- powder
- 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.)
- Withdrawn
Links
- 239000000463 material Substances 0.000 title claims description 28
- 238000002844 melting Methods 0.000 title claims description 13
- 230000008018 melting Effects 0.000 title claims description 12
- 239000000956 alloy Substances 0.000 title claims description 11
- 229910045601 alloy Inorganic materials 0.000 title claims description 11
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 41
- 239000011651 chromium Substances 0.000 claims description 28
- 229910052804 chromium Inorganic materials 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 24
- 239000007858 starting material Substances 0.000 claims description 24
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 23
- 229910052802 copper Inorganic materials 0.000 claims description 21
- 239000010949 copper Substances 0.000 claims description 21
- 239000007789 gas Substances 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 15
- 230000001681 protective effect Effects 0.000 claims description 8
- GXDVEXJTVGRLNW-UHFFFAOYSA-N [Cr].[Cu] Chemical compound [Cr].[Cu] GXDVEXJTVGRLNW-UHFFFAOYSA-N 0.000 claims description 7
- 230000007547 defect Effects 0.000 claims description 6
- 238000007792 addition Methods 0.000 claims description 4
- 238000010894 electron beam technology Methods 0.000 claims description 4
- 238000010309 melting process Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000005204 segregation Methods 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000010310 metallurgical process Methods 0.000 claims description 3
- 230000001603 reducing effect Effects 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000011049 filling Methods 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 229910052756 noble gas Inorganic materials 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims description 2
- 238000002791 soaking Methods 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims 1
- 238000013021 overheating Methods 0.000 claims 1
- 238000005470 impregnation Methods 0.000 description 7
- 239000012535 impurity Substances 0.000 description 7
- 238000005266 casting Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910000743 fusible alloy Inorganic materials 0.000 description 3
- 238000004663 powder metallurgy Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- ZTXONRUJVYXVTJ-UHFFFAOYSA-N chromium copper Chemical compound [Cr][Cu][Cr] ZTXONRUJVYXVTJ-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 210000001787 dendrite Anatomy 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- QQHSIRTYSFLSRM-UHFFFAOYSA-N alumanylidynechromium Chemical compound [Al].[Cr] QQHSIRTYSFLSRM-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005247 gettering Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 150000002835 noble gases Chemical class 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000009736 wetting Methods 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
- H01H1/0203—Contacts characterised by the material thereof specially adapted for vacuum switches
- H01H1/0206—Contacts characterised by the material thereof specially adapted for vacuum switches containing as major components Cu and Cr
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
-
- 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
- C22C1/02—Making non-ferrous alloys by melting
-
- 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
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/668—Means for obtaining or monitoring the vacuum
- H01H33/6683—Means for obtaining or monitoring the vacuum by gettering
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Switches (AREA)
- Contacts (AREA)
- Manufacture And Refinement Of Metals (AREA)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19833303170 DE3303170A1 (de) | 1983-01-31 | 1983-01-31 | Verfahren zum herstellen von kupfer-chrom-schmelzlegierungen als kontaktwerkstoff fuer vakuum-leistungsschalter |
| EP84100463A EP0115292B2 (de) | 1983-01-31 | 1984-01-17 | Verfahren zum Herstellen von Kupfer-Chrom-Schmelzlegierungen als Kontaktwerkstoff für Vakuum-Leistungsschalter |
| DE8484100463T DE3460258D1 (en) | 1983-01-31 | 1984-01-17 | Process for manufacturing copper-chromium alloys by melting, for use as contact material in vacuum power switches |
| US06/574,792 US4537745A (en) | 1983-01-31 | 1984-01-27 | Method of producing copper-chromium fusion alloys as contact material for vacuum power switches |
| CA000446161A CA1220630A (en) | 1983-01-31 | 1984-01-27 | Method of producing copper-chromium fusion alloys as contact material for vacuum power switches |
| JP59014986A JPS59143031A (ja) | 1983-01-31 | 1984-01-30 | 真空遮断器用接触子材料としての銅・クロム溶融合金の製造方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19833303170 DE3303170A1 (de) | 1983-01-31 | 1983-01-31 | Verfahren zum herstellen von kupfer-chrom-schmelzlegierungen als kontaktwerkstoff fuer vakuum-leistungsschalter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3303170A1 true DE3303170A1 (de) | 1984-08-02 |
Family
ID=6189662
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19833303170 Withdrawn DE3303170A1 (de) | 1983-01-31 | 1983-01-31 | Verfahren zum herstellen von kupfer-chrom-schmelzlegierungen als kontaktwerkstoff fuer vakuum-leistungsschalter |
| DE8484100463T Expired DE3460258D1 (en) | 1983-01-31 | 1984-01-17 | Process for manufacturing copper-chromium alloys by melting, for use as contact material in vacuum power switches |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE8484100463T Expired DE3460258D1 (en) | 1983-01-31 | 1984-01-17 | Process for manufacturing copper-chromium alloys by melting, for use as contact material in vacuum power switches |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4537745A (enExample) |
| EP (1) | EP0115292B2 (enExample) |
| JP (1) | JPS59143031A (enExample) |
| CA (1) | CA1220630A (enExample) |
| DE (2) | DE3303170A1 (enExample) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3543586A1 (de) * | 1984-12-24 | 1986-07-10 | Mitsubishi Denki K.K., Tokio/Tokyo | Kontaktwerkstoff fuer vakuumschalter |
| DE3734424A1 (de) * | 1986-10-17 | 1988-04-28 | Battelle Institut E V | Verfahren zur herstellung von dispersionsgehaerteten legierungen auf der basis von kupfer |
| US4780582A (en) * | 1984-07-30 | 1988-10-25 | Siemens Aktiengesellschaft | Use of a fusion material of copper and chrome as the contact material for vacuum contactors |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60189126A (ja) * | 1984-03-07 | 1985-09-26 | 株式会社東芝 | 真空遮断器とその処理方法 |
| US4736078A (en) * | 1983-10-07 | 1988-04-05 | Kabushiki Kaisha Toshiba | Method for processing vacuum switch and vacuum switch processed by the method |
| GB2175009B (en) * | 1985-03-27 | 1990-02-07 | Mitsubishi Metal Corp | Wire for bonding a semiconductor device and process for producing the same |
| EP0283536A1 (de) * | 1987-03-24 | 1988-09-28 | INOVAN GmbH & Co. KG Metalle und Bauelemente | Verfahren zum Herstellen von Silber/MeO-Kontaktplättchen mit löt- oder schweissfähiger Unterseite |
| EP0314981B1 (de) * | 1987-11-02 | 1991-09-18 | Siemens Aktiengesellschaft | Verfahren zur Herstellung von Schmelzwerkstoffen aus Kupfer, Chrom und wenigstens einer leichtverdampflichen Komponente sowie Abschmelzelektrode zur Verwendung bei einem derartigen Verfahren |
| JP2768721B2 (ja) * | 1989-03-01 | 1998-06-25 | 株式会社東芝 | 真空バルブ用接点材料 |
| DE3915155A1 (de) * | 1989-05-09 | 1990-12-20 | Siemens Ag | Verfahren zur herstellung von schmelzwerkstoffen aus kupfer, chrom und wenigstens einer sauerstoffaffinen komponente sowie abschmelzelektrode zur verwendung bei einem derartigen verfahren |
| GB8921475D0 (en) * | 1989-09-22 | 1989-11-08 | Gen Electric Co Plc | High current switch components |
| US5352404A (en) * | 1991-10-25 | 1994-10-04 | Kabushiki Kaisha Meidensha | Process for forming contact material including the step of preparing chromium with an oxygen content substantially reduced to less than 0.1 wt. % |
| US5557927A (en) * | 1994-02-07 | 1996-09-24 | Rockwell International Corporation | Blanching resistant coating for copper alloy rocket engine main chamber lining |
| TW320728B (enExample) * | 1994-02-21 | 1997-11-21 | Toshiba Co Ltd | |
| WO1995025822A1 (de) * | 1994-03-18 | 1995-09-28 | Sahm P R | Gusswerkstoffe |
| DE19650752C1 (de) * | 1996-12-06 | 1998-03-05 | Louis Renner Gmbh | Kupfer-Chrom-Kontaktwerkstoff mit feinkörnig umgewandelter Oberfläche für elektrische Schaltkontakte und Verfahren zu dessen Herstellung |
| DE19811816A1 (de) * | 1997-03-24 | 1998-10-01 | Fuji Electric Co Ltd | Verfahren zur Herstellung eines Elektrodenmaterials für Vakuum-Leistungsschalter |
| US6282262B1 (en) * | 1999-11-10 | 2001-08-28 | Varian Medical Systems, Inc. | X-ray tube and method of manufacture |
| ATE506683T1 (de) * | 2006-04-20 | 2011-05-15 | Abb Technology Ag | Verfahren zur herstellung eines kontaktstückes, sowie kontaktstück für nieder-, mittel,- hochspannungs- und generatorschaltgeräte |
| CN100374594C (zh) * | 2006-04-28 | 2008-03-12 | 沈阳铜兴产业有限公司 | Cu-Cr-Zr合金和Cu-Zr合金的非真空熔铸工艺 |
| DE102006021772B4 (de) * | 2006-05-10 | 2009-02-05 | Siemens Ag | Verfahren zur Herstellung von Kupfer-Chrom-Kontakten für Vakuumschalter und zugehörige Schaltkontakte |
| JP2008057026A (ja) * | 2006-09-04 | 2008-03-13 | Toshiba Corp | 真空バルブ用接点材料およびその製造方法 |
| EP1997574A1 (en) * | 2007-06-01 | 2008-12-03 | ABB Technology AG | Method for production of a contact piece for a switchgear assembly, as well as a contact piece itself |
| KR101058765B1 (ko) | 2008-09-30 | 2011-08-24 | 제이엑스 닛코 닛세키 킨조쿠 가부시키가이샤 | 고순도 구리 및 전해에 의한 고순도 구리의 제조 방법 |
| JP4680325B2 (ja) * | 2008-09-30 | 2011-05-11 | Ｊｘ日鉱日石金属株式会社 | 高純度銅又は高純度銅合金スパッタリングターゲット、同スパッタリングターゲットの製造方法及び高純度銅又は高純度銅合金スパッタ膜 |
| CN106521199B (zh) * | 2016-12-15 | 2017-12-29 | 西京学院 | 一种移动式易熔合金加注回收系统及其使用方法 |
| EP3489373A1 (de) * | 2017-11-28 | 2019-05-29 | Heraeus Deutschland GmbH & Co. KG | Verfahren zur schmelzmetallurgischen darstellung der intermetallischen verbindung nb3sn |
| CN117904474A (zh) * | 2024-01-18 | 2024-04-19 | 陕西煤业化工技术研究院有限责任公司 | 一种耐烧蚀低气体含量的铜铬触头及其制备方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1982001960A1 (en) * | 1980-11-28 | 1982-06-10 | Rodionov Valery V | Method of preparation of contacts and electrodes of vacuum electric apparatuses |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3125441A (en) * | 1964-03-17 | Materials | ||
| US3615345A (en) * | 1968-08-28 | 1971-10-26 | Westinghouse Electric Corp | Method for producing ultra-high purity metal |
| US3827883A (en) * | 1972-10-24 | 1974-08-06 | Mallory & Co Inc P R | Electrical contact material |
| US3960554A (en) * | 1974-06-03 | 1976-06-01 | Westinghouse Electric Corporation | Powdered metallurgical process for forming vacuum interrupter contacts |
| US4008081A (en) * | 1975-06-24 | 1977-02-15 | Westinghouse Electric Corporation | Method of making vacuum interrupter contact materials |
| DE2535184B2 (de) * | 1975-08-06 | 1977-06-02 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zum herstellen porenarm gesinterter fertigformteile auf der basis chrom-kupfer oder vanadium-kupfer |
| US4190753A (en) * | 1978-04-13 | 1980-02-26 | Westinghouse Electric Corp. | High-density high-conductivity electrical contact material for vacuum interrupters and method of manufacture |
| JPS598015B2 (ja) * | 1978-05-31 | 1984-02-22 | 三菱電機株式会社 | 真空しや断器用接点 |
| JPS55152144A (en) * | 1979-05-16 | 1980-11-27 | Hitachi Chem Co Ltd | Cast alloy for collecter ring |
| DD155861A3 (de) * | 1979-12-08 | 1982-07-14 | Hans Bohmeier | Verfahren zur herstellung von schaltstuecke |
| US4481030A (en) * | 1983-06-01 | 1984-11-06 | The United States Of America As Represented By The United States Department Of Energy | Tantalum-copper alloy and method for making |
-
1983
- 1983-01-31 DE DE19833303170 patent/DE3303170A1/de not_active Withdrawn
-
1984
- 1984-01-17 EP EP84100463A patent/EP0115292B2/de not_active Expired
- 1984-01-17 DE DE8484100463T patent/DE3460258D1/de not_active Expired
- 1984-01-27 CA CA000446161A patent/CA1220630A/en not_active Expired
- 1984-01-27 US US06/574,792 patent/US4537745A/en not_active Expired - Fee Related
- 1984-01-30 JP JP59014986A patent/JPS59143031A/ja active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1982001960A1 (en) * | 1980-11-28 | 1982-06-10 | Rodionov Valery V | Method of preparation of contacts and electrodes of vacuum electric apparatuses |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4780582A (en) * | 1984-07-30 | 1988-10-25 | Siemens Aktiengesellschaft | Use of a fusion material of copper and chrome as the contact material for vacuum contactors |
| DE3543586A1 (de) * | 1984-12-24 | 1986-07-10 | Mitsubishi Denki K.K., Tokio/Tokyo | Kontaktwerkstoff fuer vakuumschalter |
| US4677264A (en) * | 1984-12-24 | 1987-06-30 | Mitsubishi Denki Kabushiki Kaisha | Contact material for vacuum circuit breaker |
| DE3734424A1 (de) * | 1986-10-17 | 1988-04-28 | Battelle Institut E V | Verfahren zur herstellung von dispersionsgehaerteten legierungen auf der basis von kupfer |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0115292B2 (de) | 1989-09-06 |
| DE3460258D1 (en) | 1986-08-07 |
| US4537745A (en) | 1985-08-27 |
| EP0115292A3 (en) | 1984-08-22 |
| EP0115292B1 (de) | 1986-07-02 |
| EP0115292A2 (de) | 1984-08-08 |
| CA1220630A (en) | 1987-04-21 |
| JPH0471970B2 (enExample) | 1992-11-17 |
| JPS59143031A (ja) | 1984-08-16 |
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