GB553832A - Improvements in and relating to thermionic cathodes - Google Patents
Improvements in and relating to thermionic cathodesInfo
- Publication number
- GB553832A GB553832A GB1558141A GB1558141A GB553832A GB 553832 A GB553832 A GB 553832A GB 1558141 A GB1558141 A GB 1558141A GB 1558141 A GB1558141 A GB 1558141A GB 553832 A GB553832 A GB 553832A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alloy
- relating
- heating
- thermionic cathodes
- thermionic
- 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
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-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
553,832. Thermionic cathodes. BARTON, F., and MAYER, C. H. Dec. 3, 1941, No. 15581. [Class 39 (i)] A thermionic cathode is formed by applying to a refractory core such as tungsten, molybdenum, tantalum or an alloy, at least two successive coatings of different metals, heating in an inert gas to alloy these metals, and finally coating with a rare-earth compound. The coatings may be copper and nickel and if a third layer such as chromium is deposited, the heating may take place in two stages. The coating may be electrolytic.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1558141A GB553832A (en) | 1941-12-03 | 1941-12-03 | Improvements in and relating to thermionic cathodes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1558141A GB553832A (en) | 1941-12-03 | 1941-12-03 | Improvements in and relating to thermionic cathodes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB553832A true GB553832A (en) | 1943-06-08 |
Family
ID=10061680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1558141A Expired GB553832A (en) | 1941-12-03 | 1941-12-03 | Improvements in and relating to thermionic cathodes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB553832A (en) |
-
1941
- 1941-12-03 GB GB1558141A patent/GB553832A/en not_active Expired
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