GB407334A - Method of producing high-emission thermionic cathodes - Google Patents
Method of producing high-emission thermionic cathodesInfo
- Publication number
- GB407334A GB407334A GB25109/32A GB2510932A GB407334A GB 407334 A GB407334 A GB 407334A GB 25109/32 A GB25109/32 A GB 25109/32A GB 2510932 A GB2510932 A GB 2510932A GB 407334 A GB407334 A GB 407334A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vapour
- emission
- core
- producing high
- thermionic cathodes
- 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)
- Electron Sources, Ion Sources (AREA)
Abstract
407,334. Coating with metals. LOEWE, S., 10, Wiesenweg, Steglitz, and WIENECKE, B., 73, H÷nowerstrasse, Mahlsdorf, both in Berlin. Sept. 9, 1932, No. 25109. [Class 82 (ii).] A layer of barium or other alkaline earth metal is produced on the oxidized surface of a cathode core 2 by subjecting the core to the action of barium &c. vapour in a chamber 1 which is maintained at such a high temperature that the vapour cannot condense on the wall of the chamber or on any other part. The core is heated by radiation from the wall and, if necessary, by passage of current. The vapour may be introduced by heating metal in a container 4.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE407334X | 1931-09-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB407334A true GB407334A (en) | 1934-03-09 |
Family
ID=6422166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25109/32A Expired GB407334A (en) | 1931-09-11 | 1932-09-09 | Method of producing high-emission thermionic cathodes |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB407334A (en) |
| NL (1) | NL38263C (en) |
-
0
- NL NL38263D patent/NL38263C/xx active
-
1932
- 1932-09-09 GB GB25109/32A patent/GB407334A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL38263C (en) |
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