GB802049A - Improvements in or relating to methods of manufacturing secondary electron emissive electrodes for electron discharge devices - Google Patents
Improvements in or relating to methods of manufacturing secondary electron emissive electrodes for electron discharge devicesInfo
- Publication number
- GB802049A GB802049A GB919756A GB919756A GB802049A GB 802049 A GB802049 A GB 802049A GB 919756 A GB919756 A GB 919756A GB 919756 A GB919756 A GB 919756A GB 802049 A GB802049 A GB 802049A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alloy
- relating
- methods
- secondary electron
- discharge devices
- 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
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 229910045601 alloy Inorganic materials 0.000 abstract 4
- 239000000956 alloy Substances 0.000 abstract 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- 229910052790 beryllium Inorganic materials 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000007772 electrode material Substances 0.000 abstract 1
- LQHZJYFIRFRDKF-UHFFFAOYSA-N gold magnesium Chemical compound [Mg].[Au] LQHZJYFIRFRDKF-UHFFFAOYSA-N 0.000 abstract 1
- 229910052749 magnesium Inorganic materials 0.000 abstract 1
- 239000011777 magnesium Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 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
- H01J9/12—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes
- H01J9/125—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes of secondary emission electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2201/00—Electrodes common to discharge tubes
- H01J2201/32—Secondary emission electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Solid Thermionic Cathode (AREA)
- Physical Vapour Deposition (AREA)
Abstract
802,049. Electrode materials and processing. FERNSEH G. m. b. H. March 23, 1956 [March 23, 1955], No. 9197/56. Drawings to Specification. Class 39(1). A secondary electron emissive electrode consisting of a metal support coated with an emissive alloy is made by separately coating on to the support the more easily oxidizable component of the alloy, and then the less easily oxidizable component. Thus one component is protected by the other, and may be so stored until assembled within the discharge device, when the electrode is heated under vacuum to alloy the two components. For example, a layer of magnesium 0À5Á thick is evaporated on to a nickel base, and then covered with a further layer of silver 0À7Á thick. Other suitable alloys are copper-beryllium and gold-magnesium, the first-named being the more readily oxidizable component.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF17125A DE1022701B (en) | 1955-03-23 | 1955-03-23 | Starting material for electrodes of electron tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB802049A true GB802049A (en) | 1958-09-24 |
Family
ID=7088467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB919756A Expired GB802049A (en) | 1955-03-23 | 1956-03-23 | Improvements in or relating to methods of manufacturing secondary electron emissive electrodes for electron discharge devices |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1022701B (en) |
| GB (1) | GB802049A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE607520C (en) * | 1925-08-26 | 1934-12-29 | Siegmund Loewe Dr | Process for forming the cathodes of high-emission vacuum tubes (e.g. transmission, amplifier, rectifier or X-ray tubes) |
-
1955
- 1955-03-23 DE DEF17125A patent/DE1022701B/en active Pending
-
1956
- 1956-03-23 GB GB919756A patent/GB802049A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1022701B (en) | 1958-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES358533A1 (en) | Method of making an electrode | |
| GB836109A (en) | Improvements relating to thermionic cathodes | |
| GB802049A (en) | Improvements in or relating to methods of manufacturing secondary electron emissive electrodes for electron discharge devices | |
| GB1262420A (en) | Improvements in or relating to voltage overload protectors | |
| GB619855A (en) | Improvements in or relating to the manufacture of mosaic screens | |
| JPS5451459A (en) | Cathode of electron tube | |
| GB892454A (en) | Improvements in or relating to electron multipliers | |
| GB949330A (en) | Improvements in target electrodes and methods of manufacture | |
| GB909158A (en) | Storage electrode | |
| GB797998A (en) | Alloy for vacuum-tube cathodes | |
| JPS5641636A (en) | Directly heated type oxide cathode | |
| GB898505A (en) | Improvements in or relating to getter arrangements | |
| GB980715A (en) | Improvements in or relating to the manufacture of deposited electrical circuits, electrical components, electrical circuit elements and the like | |
| GB851978A (en) | Improvements in or relating to processes for the production of electrodes on semi-conductor bodies | |
| GB542599A (en) | Improvements in or relating to photo electric cells | |
| ES261604A1 (en) | Printing plates | |
| GB884716A (en) | Improvements in and relating to storage arrangements | |
| GB915812A (en) | Improvements in electron-guns | |
| JPS5291358A (en) | Direct heating cathode structure | |
| GB497018A (en) | Improvements in or relating to methods of manufacturing mosaic electrodes | |
| GB740266A (en) | Improvements in or relating to electron discharge devices | |
| GB966376A (en) | Magnetic material | |
| JPS6443952A (en) | Electron gun for electronic tube | |
| CA587733A (en) | Evaporating element with carbon base having a metal coating layer and a surface layer of metal silicide and method of making the same | |
| GB850814A (en) | Improvements in or relating to electron discharge tubes |