GB1041282A - Cathode for electron discharge device - Google Patents
Cathode for electron discharge deviceInfo
- Publication number
- GB1041282A GB1041282A GB12980/64A GB1298064A GB1041282A GB 1041282 A GB1041282 A GB 1041282A GB 12980/64 A GB12980/64 A GB 12980/64A GB 1298064 A GB1298064 A GB 1298064A GB 1041282 A GB1041282 A GB 1041282A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- rhenium
- boride
- march
- discharge device
- 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
Links
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 abstract 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract 2
- 229910052746 lanthanum Inorganic materials 0.000 abstract 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 abstract 2
- 229910052702 rhenium Inorganic materials 0.000 abstract 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 abstract 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
- 229910052776 Thorium Inorganic materials 0.000 abstract 1
- 229910052770 Uranium Inorganic materials 0.000 abstract 1
- 229940072049 amyl acetate Drugs 0.000 abstract 1
- PGMYKACGEOXYJE-UHFFFAOYSA-N anhydrous amyl acetate Natural products CCCCCOC(C)=O PGMYKACGEOXYJE-UHFFFAOYSA-N 0.000 abstract 1
- 229910052786 argon Inorganic materials 0.000 abstract 1
- 229910052788 barium Inorganic materials 0.000 abstract 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052791 calcium Inorganic materials 0.000 abstract 1
- 239000011575 calcium Substances 0.000 abstract 1
- 239000010406 cathode material Substances 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000007598 dipping method Methods 0.000 abstract 1
- MNWFXJYAOYHMED-UHFFFAOYSA-M heptanoate Chemical compound CCCCCCC([O-])=O MNWFXJYAOYHMED-UHFFFAOYSA-M 0.000 abstract 1
- 238000010422 painting Methods 0.000 abstract 1
- 238000005245 sintering Methods 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 229910052712 strontium Inorganic materials 0.000 abstract 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 abstract 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/14—Solid thermionic cathodes characterised by the material
- H01J1/148—Solid thermionic cathodes characterised by the material with compounds having metallic conductive properties, e.g. lanthanum boride, as an emissive material
Landscapes
- Solid Thermionic Cathode (AREA)
Abstract
1,041,282. Cathode materials. GENERAL ELECTRIC CO. March 26, 1964 [March 26, 1963], No. 12980/64. Heading H1D. A thermionic cathode includes at least one boride of calcium, barium, strontium, thorium, uranium, or a rare earth-particularly lanthanum or misch metal-on a rhenium support. A lanthanum hexaboride coating 12 (Fig. 3, not shown), produced by spraying, dipping, painting, or sintering in argon a boride/amyl acetate paste, is disposed on a rhenium tube 10 between the turns of a loosely wound rhenium wire 11. In alternative embodiments, the inner tube 10 may be dispensed with (Figs. 1 and 2, not shown); the cathode may be hairpin-shaped (Fig. 5, not shown); and, instead of being directly heated, a heater wire may be coiled about, but out of contact with, the cathode (Fig. 4, not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US268107A US3312856A (en) | 1963-03-26 | 1963-03-26 | Rhenium supported metallic boride cathode emitters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1041282A true GB1041282A (en) | 1966-09-01 |
Family
ID=23021505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12980/64A Expired GB1041282A (en) | 1963-03-26 | 1964-03-26 | Cathode for electron discharge device |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3312856A (en) |
| DE (1) | DE1234858B (en) |
| GB (1) | GB1041282A (en) |
| NL (1) | NL6403351A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012055458A1 (en) | 2010-10-25 | 2012-05-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Device for producing an electron beam |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3500106A (en) * | 1965-09-10 | 1970-03-10 | Bell & Howell Co | Cathode |
| GB1167157A (en) * | 1966-01-08 | 1969-10-15 | Matsushita Electronics Corp | Electric Discharge Tube. |
| US3436584A (en) * | 1966-03-15 | 1969-04-01 | Gen Electric | Electron emission source with sharply defined emitting area |
| GB1178051A (en) * | 1966-04-20 | 1970-01-14 | Matsushita Electronics Corp | Noiseless Discharge Tube |
| GB1178052A (en) * | 1966-04-20 | 1970-01-14 | Matsushita Electronics Corp | A Noiseless Discharge Tube |
| US3462635A (en) * | 1966-10-24 | 1969-08-19 | Ibm | Holder for highly reactive cathodes of rare-earth borides such as lanthanum hexaboride,the holder provided with a cooling means opposite to the emissive end of the cathode in order to reduce tendency of holder deterioration |
| US3558966A (en) * | 1967-03-01 | 1971-01-26 | Semicon Associates Inc | Directly heated dispenser cathode |
| US3440475A (en) * | 1967-04-11 | 1969-04-22 | Lokomotivbau Elektrotech | Lanthanum hexaboride cathode system for an electron beam generator |
| GB1291221A (en) * | 1968-07-07 | 1972-10-04 | Smith Kenneth C A | Electron probe forming system |
| US3631291A (en) * | 1969-04-30 | 1971-12-28 | Gen Electric | Field emission cathode with metallic boride coating |
| US3668457A (en) * | 1969-08-25 | 1972-06-06 | United Aircraft Corp | Brazing alloy for bonding thermionic cathode to support |
| DE2037874B2 (en) * | 1970-07-30 | 1972-12-14 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | METHOD OF MAKING A SUPPLY CATHOD |
| NL167796C (en) * | 1972-05-30 | 1982-01-18 | Philips Nv | METHOD FOR MANUFACTURING A LANTHANE HEXABORIDE-ACTIVATED CATHOD FOR AN ELECTRIC DISCHARGE TUBE |
| JPS4953660U (en) * | 1972-08-22 | 1974-05-11 | ||
| JPS5249305B2 (en) * | 1973-09-05 | 1977-12-16 | ||
| US3944866A (en) * | 1974-04-08 | 1976-03-16 | Canadian Patents & Development Ltd. | Thermionic emitter of lanthanum strontium vanadates |
| JPS5128475A (en) * | 1974-09-04 | 1976-03-10 | Hitachi Ltd | MAGUNETORONINKYOKUKOTAI |
| JPS5736698B2 (en) * | 1974-09-13 | 1982-08-05 | ||
| US4055780A (en) * | 1975-04-10 | 1977-10-25 | National Institute For Researches In Inorganic Materials | Thermionic emission cathode having a tip of a single crystal of lanthanum hexaboride |
| US4054946A (en) * | 1976-09-28 | 1977-10-18 | Bell Telephone Laboratories, Incorporated | Electron source of a single crystal of lanthanum hexaboride emitting surface of (110) crystal plane |
| US4137476A (en) * | 1977-05-18 | 1979-01-30 | Denki Kagaku Kogyo Kabushiki Kaisha | Thermionic cathode |
| US4258283A (en) * | 1978-08-31 | 1981-03-24 | Balzers Aktiengesellschaft Fur Hochvakuumtechnik Und Dunne Schichten | Cathode for electron emission |
| FR2445605A1 (en) * | 1978-12-27 | 1980-07-25 | Thomson Csf | DIRECT HEATING CATHODE AND HIGH FREQUENCY ELECTRONIC TUBE COMPRISING SUCH A CATHODE |
| JPS57196443A (en) * | 1981-05-29 | 1982-12-02 | Denki Kagaku Kogyo Kk | Manufacture of hot cathode |
| US4760306A (en) * | 1983-06-10 | 1988-07-26 | The United States Of America As Represented By The United States Department Of Energy | Electron emitting filaments for electron discharge devices |
| JP4951477B2 (en) * | 2006-12-04 | 2012-06-13 | 電気化学工業株式会社 | Electron emission source |
| EP1983546A1 (en) * | 2007-04-20 | 2008-10-22 | PANalytical B.V. | X-ray cathode and tube |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL19436C (en) * | 1926-04-06 | |||
| US1854970A (en) * | 1930-05-20 | 1932-04-19 | Gen Electric | Electric lamp and the illuminating body used therein |
| US2098113A (en) * | 1932-02-06 | 1937-11-02 | Spaeth Charles | Lamp and method of operating same |
| DE883935C (en) * | 1938-12-02 | 1953-07-23 | Lorenz C Ag | Cathode for electron tubes |
| US2300959A (en) * | 1940-01-01 | 1942-11-03 | Gen Electric | Cathode for discharge devices |
| NL76841C (en) * | 1940-11-23 | |||
| US2586768A (en) * | 1949-02-24 | 1952-02-26 | Driver Harris Co | Vacuum tube electrode element |
| US2659685A (en) * | 1950-03-31 | 1953-11-17 | Gen Electric | Boride cathodes |
| NL80503C (en) * | 1950-03-31 | |||
| US2820920A (en) * | 1952-09-17 | 1958-01-21 | Claude Ets | Manufacture of coated electrodes |
-
1963
- 1963-03-26 US US268107A patent/US3312856A/en not_active Expired - Lifetime
-
1964
- 1964-03-25 DE DEG40191A patent/DE1234858B/en active Pending
- 1964-03-26 NL NL6403351A patent/NL6403351A/xx unknown
- 1964-03-26 GB GB12980/64A patent/GB1041282A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012055458A1 (en) | 2010-10-25 | 2012-05-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Device for producing an electron beam |
| US8878422B2 (en) | 2010-10-25 | 2014-11-04 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Device for producing an electron beam |
| RU2557078C2 (en) * | 2010-10-25 | 2015-07-20 | Фраунхофер-Гезелльшафт Цур Фердерунг Дер Ангевандтен Форшунг Е.Ф. | Electronic beam generator |
Also Published As
| Publication number | Publication date |
|---|---|
| NL6403351A (en) | 1964-09-28 |
| US3312856A (en) | 1967-04-04 |
| DE1234858B (en) | 1967-02-23 |
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