GB1378620A - Thermionic cathode including lanthanum hexaboride - Google Patents
Thermionic cathode including lanthanum hexaborideInfo
- Publication number
- GB1378620A GB1378620A GB2515673A GB2515673A GB1378620A GB 1378620 A GB1378620 A GB 1378620A GB 2515673 A GB2515673 A GB 2515673A GB 2515673 A GB2515673 A GB 2515673A GB 1378620 A GB1378620 A GB 1378620A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- lab
- heating
- lanthanum hexaboride
- cathode including
- 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
- 229910052746 lanthanum Inorganic materials 0.000 title 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 title 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract 3
- 238000000151 deposition Methods 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 230000004888 barrier function Effects 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
- 238000010894 electron beam technology Methods 0.000 abstract 1
- 238000005245 sintering Methods 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
- H01J9/042—Manufacture, activation of the emissive part
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Solid Thermionic Cathode (AREA)
- Gas-Filled Discharge Tubes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7207275A NL167796C (nl) | 1972-05-30 | 1972-05-30 | Werkwijze voor het vervaardigen van een met lanthaanhexaboride geactiveerde kathode voor een elektrische ontladingsbuis. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1378620A true GB1378620A (en) | 1974-12-27 |
Family
ID=19816153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2515673A Expired GB1378620A (en) | 1972-05-30 | 1973-05-25 | Thermionic cathode including lanthanum hexaboride |
Country Status (9)
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2117795A (en) * | 1982-04-06 | 1983-10-19 | Standard Telephones Cables Ltd | Fabricating capacitors; forming ceramic films |
| US4810925A (en) * | 1986-05-16 | 1989-03-07 | English Electric Valve Company Limited | Directly heated cathodes |
| US9824666B2 (en) | 2014-09-26 | 2017-11-21 | Boe Technology Group Co., Ltd. | Smart bracelet display control system and smart bracelet |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5128475A (ja) * | 1974-09-04 | 1976-03-10 | Hitachi Ltd | Magunetoroninkyokukotai |
| US4019081A (en) * | 1974-10-25 | 1977-04-19 | Bbc Brown Boveri & Company Limited | Reaction cathode |
| JPS6040133B2 (ja) * | 1975-04-10 | 1985-09-09 | 科学技術庁無機材質研究所長 | 熱電子放射用陰極の製造方法 |
| 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 |
| JPS5231652A (en) * | 1975-09-04 | 1977-03-10 | Natl Inst For Res In Inorg Mater | Electron microscope |
| JPS5231651A (en) * | 1975-09-04 | 1977-03-10 | Natl Inst For Res In Inorg Mater | Scan-type electron microscope |
| 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 |
| JPS57196443A (en) * | 1981-05-29 | 1982-12-02 | Denki Kagaku Kogyo Kk | Manufacture of hot cathode |
| JPS6489242A (en) * | 1987-09-30 | 1989-04-03 | Mitsubishi Electric Corp | Electrode for discharge light source |
| DE4026297A1 (de) * | 1990-08-20 | 1992-02-27 | Siemens Ag | Roentgenanordnung |
| DE4026300A1 (de) * | 1990-08-20 | 1992-02-27 | Siemens Ag | Elektronenemitter einer roentgenroehre |
| DE4026299A1 (de) * | 1990-08-20 | 1992-02-27 | Siemens Ag | Roentgenanordnung mit einem roentgenstrahler |
| DE4026298A1 (de) * | 1990-08-20 | 1992-02-27 | Siemens Ag | Roentgenroehre mit einem elektronenemitter |
| DE4026301A1 (de) * | 1990-08-20 | 1992-02-27 | Siemens Ag | Elektronenemitter einer roentgenroehre |
| DE10245392B3 (de) * | 2002-09-28 | 2004-01-08 | Vtd Vakuumtechnik Dresden Gmbh | Rohrförmige Hohlkathode für hohe elektrische Leistungen |
| JP4951477B2 (ja) * | 2006-12-04 | 2012-06-13 | 電気化学工業株式会社 | 電子放出源 |
| EP1983546A1 (en) * | 2007-04-20 | 2008-10-22 | PANalytical B.V. | X-ray cathode and tube |
| US8952605B2 (en) * | 2012-07-03 | 2015-02-10 | National Institute For Materials Science | Metal hexaboride cold field emitter, method of fabricating same, and electron gun |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3312856A (en) * | 1963-03-26 | 1967-04-04 | Gen Electric | Rhenium supported metallic boride cathode emitters |
| US3498897A (en) * | 1967-07-25 | 1970-03-03 | Ford Motor Co | Method for manufacturing multilayered product |
| US3630770A (en) * | 1969-04-30 | 1971-12-28 | Gen Electric | Method for fabricating lanthanum boride cathodes |
-
1972
- 1972-05-30 NL NL7207275A patent/NL167796C/xx not_active IP Right Cessation
-
1973
- 1973-05-02 US US00356620A patent/US3833494A/en not_active Expired - Lifetime
- 1973-05-18 DE DE2325273A patent/DE2325273C3/de not_active Expired
- 1973-05-24 CA CA172,130A patent/CA994280A/en not_active Expired
- 1973-05-25 SE SE7307402A patent/SE382886B/xx unknown
- 1973-05-25 CH CH755173A patent/CH574677A5/xx not_active IP Right Cessation
- 1973-05-25 GB GB2515673A patent/GB1378620A/en not_active Expired
- 1973-05-26 JP JP5825873A patent/JPS5524224B2/ja not_active Expired
- 1973-05-30 FR FR7319645A patent/FR2186725B1/fr not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2117795A (en) * | 1982-04-06 | 1983-10-19 | Standard Telephones Cables Ltd | Fabricating capacitors; forming ceramic films |
| US4810925A (en) * | 1986-05-16 | 1989-03-07 | English Electric Valve Company Limited | Directly heated cathodes |
| US9824666B2 (en) | 2014-09-26 | 2017-11-21 | Boe Technology Group Co., Ltd. | Smart bracelet display control system and smart bracelet |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2325273B2 (de) | 1980-09-04 |
| FR2186725B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-09-17 |
| NL167796B (nl) | 1981-08-17 |
| DE2325273A1 (de) | 1973-12-13 |
| JPS4944661A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1974-04-26 |
| CA994280A (en) | 1976-08-03 |
| JPS5524224B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1980-06-27 |
| NL7207275A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1973-12-04 |
| CH574677A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-04-15 |
| US3833494A (en) | 1974-09-03 |
| FR2186725A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1974-01-11 |
| NL167796C (nl) | 1982-01-18 |
| DE2325273C3 (de) | 1981-07-09 |
| SE382886B (sv) | 1976-02-16 |
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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 |