GB1559875A - Directly heated oxide cathode - Google Patents
Directly heated oxide cathode Download PDFInfo
- Publication number
- GB1559875A GB1559875A GB32547/76A GB3254776A GB1559875A GB 1559875 A GB1559875 A GB 1559875A GB 32547/76 A GB32547/76 A GB 32547/76A GB 3254776 A GB3254776 A GB 3254776A GB 1559875 A GB1559875 A GB 1559875A
- Authority
- GB
- United Kingdom
- Prior art keywords
- directly heated
- heated oxide
- oxide cathode
- metal
- metal 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.)
- Expired
Links
- 229910052751 metal Inorganic materials 0.000 claims description 63
- 239000002184 metal Substances 0.000 claims description 63
- 239000000843 powder Substances 0.000 claims description 59
- 229910045601 alloy Inorganic materials 0.000 claims description 25
- 239000000956 alloy Substances 0.000 claims description 25
- 239000003638 chemical reducing agent Substances 0.000 claims description 19
- 238000000576 coating method Methods 0.000 claims description 14
- 229910052759 nickel Inorganic materials 0.000 claims description 14
- 229910017709 Ni Co Inorganic materials 0.000 claims description 12
- 229910003267 Ni-Co Inorganic materials 0.000 claims description 12
- 229910003262 Ni‐Co Inorganic materials 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000151 deposition Methods 0.000 claims description 7
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 6
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 6
- 229910003266 NiCo Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 21
- 229910000765 intermetallic Inorganic materials 0.000 description 5
- 239000007787 solid Substances 0.000 description 4
- 239000006104 solid solution Substances 0.000 description 4
- 230000008021 deposition Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910001093 Zr alloy Inorganic materials 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 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
Landscapes
- Powder Metallurgy (AREA)
- Solid Thermionic Cathode (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP749176A JPS5291356A (en) | 1976-01-28 | 1976-01-28 | Direct heating cathode structure |
| JP749676A JPS5291641A (en) | 1976-01-28 | 1976-01-28 | Direct-heated cathode structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1559875A true GB1559875A (en) | 1980-01-30 |
Family
ID=26341790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32547/76A Expired GB1559875A (en) | 1976-01-28 | 1976-08-04 | Directly heated oxide cathode |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4081713A (enExample) |
| DE (1) | DE2635772C3 (enExample) |
| FR (1) | FR2339950A1 (enExample) |
| GB (1) | GB1559875A (enExample) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58813B2 (ja) * | 1977-09-30 | 1983-01-08 | 株式会社日立製作所 | 電子管陰極及びその製造方法 |
| JPS5471550A (en) * | 1977-11-18 | 1979-06-08 | Hitachi Ltd | Base metal material for direct heating oxide cathode |
| CA1139827A (en) * | 1977-12-06 | 1983-01-18 | George L. Davis | Oxide cathode and method of manufacturing powder metallurgical nickel for such a cathode |
| GB2010911B (en) * | 1977-12-06 | 1982-03-31 | Philips Nv | Method of making cathode support nickle strip |
| JPS5814016B2 (ja) * | 1978-03-31 | 1983-03-17 | 株式会社日立製作所 | 直熱形酸化物陰極用基体金属板材 |
| JPS5814017B2 (ja) * | 1978-04-05 | 1983-03-17 | 株式会社日立製作所 | 電子管用直熱型陰極 |
| JPS5816737B2 (ja) * | 1978-04-24 | 1983-04-01 | 株式会社日立製作所 | 電子管用酸化物陰極 |
| US4636681A (en) * | 1978-07-27 | 1987-01-13 | Hitachi, Ltd. | Directly heated cathode |
| JPS5566819A (en) * | 1978-11-15 | 1980-05-20 | Hitachi Ltd | Oxide cathode for electron tube |
| JPS5641636A (en) * | 1979-09-12 | 1981-04-18 | Hitachi Ltd | Directly heated type oxide cathode |
| GB2059676B (en) * | 1979-09-12 | 1983-07-20 | Hitachi Ltd | Oxide-coated cathodes |
| US4308178A (en) * | 1979-09-17 | 1981-12-29 | North American Philips Consumer Electronics Corp. | Thermionic cathode emitter coating |
| CA1270890A (en) * | 1985-07-19 | 1990-06-26 | Keiji Watanabe | Cathode for electron tube |
| DE19616408A1 (de) * | 1996-04-24 | 1997-10-30 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Elektrode für Entladungslampen |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE632570A (enExample) * | 1962-05-21 | |||
| US3286119A (en) * | 1963-05-08 | 1966-11-15 | Hitachi Ltd | Hollow cathode discharge tubes |
| US3374385A (en) * | 1963-07-10 | 1968-03-19 | Rca Corp | Electron tube cathode with nickel-tungsten alloy base and thin nickel coating |
| US3240569A (en) * | 1964-08-21 | 1966-03-15 | Sylvania Electric Prod | Cathode base structure |
| US3351486A (en) * | 1966-11-23 | 1967-11-07 | Sylvania Electric Prod | Cathodes |
| US3558966A (en) * | 1967-03-01 | 1971-01-26 | Semicon Associates Inc | Directly heated dispenser cathode |
| US3745403A (en) * | 1971-11-30 | 1973-07-10 | Hitachi Ltd | Direct heating cathode structure for electron tubes |
-
1976
- 1976-07-30 US US05/710,303 patent/US4081713A/en not_active Expired - Lifetime
- 1976-08-04 GB GB32547/76A patent/GB1559875A/en not_active Expired
- 1976-08-09 FR FR7624329A patent/FR2339950A1/fr active Granted
- 1976-08-09 DE DE2635772A patent/DE2635772C3/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2635772B2 (de) | 1978-03-02 |
| DE2635772C3 (de) | 1978-10-26 |
| FR2339950B1 (enExample) | 1979-06-01 |
| FR2339950A1 (fr) | 1977-08-26 |
| US4081713A (en) | 1978-03-28 |
| DE2635772A1 (de) | 1977-08-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |