CA1191541A - Method of fabricating cathode electrodes and product of such method - Google Patents
Method of fabricating cathode electrodes and product of such methodInfo
- Publication number
- CA1191541A CA1191541A CA000424841A CA424841A CA1191541A CA 1191541 A CA1191541 A CA 1191541A CA 000424841 A CA000424841 A CA 000424841A CA 424841 A CA424841 A CA 424841A CA 1191541 A CA1191541 A CA 1191541A
- Authority
- CA
- Canada
- Prior art keywords
- cathode electrode
- thorium
- tungsten
- partially cured
- binder
- 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
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 21
- 239000010937 tungsten Substances 0.000 claims abstract description 21
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052776 Thorium Inorganic materials 0.000 claims abstract description 16
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 claims abstract description 14
- -1 thorium hydride Chemical compound 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 11
- 239000002002 slurry Substances 0.000 claims abstract description 7
- 239000000374 eutectic mixture Substances 0.000 claims abstract description 6
- 239000011230 binding agent Substances 0.000 claims description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000004793 Polystyrene Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 229920002223 polystyrene Polymers 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 239000003039 volatile agent Substances 0.000 claims description 2
- 239000008096 xylene Substances 0.000 claims description 2
- 238000000354 decomposition reaction Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microwave Tubes (AREA)
- Powder Metallurgy (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US371,151 | 1982-04-23 | ||
| US06/371,151 US4424044A (en) | 1982-04-23 | 1982-04-23 | Method of fabricating cathode electrodes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1191541A true CA1191541A (en) | 1985-08-06 |
Family
ID=23462700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000424841A Expired CA1191541A (en) | 1982-04-23 | 1983-03-30 | Method of fabricating cathode electrodes and product of such method |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4424044A (en, 2012) |
| JP (1) | JPS58192241A (en, 2012) |
| CA (1) | CA1191541A (en, 2012) |
| DE (1) | DE3314668A1 (en, 2012) |
| FR (1) | FR2525810B1 (en, 2012) |
| GB (1) | GB2119565B (en, 2012) |
| IT (1) | IT1170376B (en, 2012) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2695755B1 (fr) * | 1992-09-11 | 1994-10-28 | Thomson Tubes Electroniques | Tube électronique à structure radiale. |
| US6084353A (en) * | 1997-06-03 | 2000-07-04 | Communications And Power Industries, Inc. | Coaxial inductive output tube having an annular output cavity |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB289381A (en) * | 1927-04-25 | 1929-07-22 | Siemens Ag | Improvements in or relating to gas filled discharge vessels, more particularly for use as rectifiers |
| GB344572A (en) * | 1928-12-29 | 1931-03-12 | Westinghouse Lamp Co | Improvements in the manufacture of refractory articles |
| US2339392A (en) | 1942-10-06 | 1944-01-18 | Rca Corp | Cathode |
| BE476381A (en, 2012) * | 1946-09-06 | |||
| US2693431A (en) * | 1948-01-27 | 1954-11-02 | Eitcl Mccullough Inc | Method of making electron emitters |
| GB731422A (en) * | 1951-01-15 | 1955-06-08 | M O Valve Co Ltd | Improvements in or relating to thermionic valves |
| US2654045A (en) | 1951-01-15 | 1953-09-29 | Gen Electric | Thermionic cathode for electric discharge device |
| GB717231A (en) * | 1951-01-31 | 1954-10-27 | Gen Electric Co Ltd | Improvements in or relating to electric discharge devices |
| US2879432A (en) | 1956-03-16 | 1959-03-24 | Gen Electric | Electron emitter |
| US3027480A (en) | 1958-12-15 | 1962-03-27 | Raytheon Co | Electron discharge device cathodes |
| US3105290A (en) * | 1958-12-18 | 1963-10-01 | Westinghouse Electric Corp | Cathode for electron discharge device |
| US3045320A (en) * | 1959-03-12 | 1962-07-24 | Raytheon Co | Impregnated cathodes |
| GB1137124A (en) * | 1964-12-23 | 1968-12-18 | Nat Res Dev | Thermionic electron emitter |
| NL175480C (nl) | 1974-06-12 | 1984-11-01 | Philips Nv | Elektrode voor een ontladingslamp, werkwijze voor de vervaardiging van een dergelijke elektrode en ontladingslamp voorzien van een dergelijke elektrode. |
-
1982
- 1982-04-23 US US06/371,151 patent/US4424044A/en not_active Expired - Fee Related
-
1983
- 1983-03-30 CA CA000424841A patent/CA1191541A/en not_active Expired
- 1983-04-19 GB GB08310608A patent/GB2119565B/en not_active Expired
- 1983-04-20 IT IT48135/83A patent/IT1170376B/it active
- 1983-04-20 FR FR8306481A patent/FR2525810B1/fr not_active Expired
- 1983-04-20 JP JP58069866A patent/JPS58192241A/ja active Granted
- 1983-04-22 DE DE19833314668 patent/DE3314668A1/de active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| GB2119565B (en) | 1985-12-11 |
| DE3314668C2 (en, 2012) | 1993-02-04 |
| IT1170376B (it) | 1987-06-03 |
| JPS58192241A (ja) | 1983-11-09 |
| FR2525810B1 (fr) | 1987-06-05 |
| IT8348135A0 (it) | 1983-04-20 |
| DE3314668A1 (de) | 1983-11-24 |
| GB2119565A (en) | 1983-11-16 |
| GB8310608D0 (en) | 1983-05-25 |
| JPH0515018B2 (en, 2012) | 1993-02-26 |
| US4424044A (en) | 1984-01-03 |
| FR2525810A1 (fr) | 1983-10-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |