GB759080A - Improvements in or relating to composite metallic sheet - Google Patents
Improvements in or relating to composite metallic sheetInfo
- Publication number
- GB759080A GB759080A GB10647/54A GB1064754A GB759080A GB 759080 A GB759080 A GB 759080A GB 10647/54 A GB10647/54 A GB 10647/54A GB 1064754 A GB1064754 A GB 1064754A GB 759080 A GB759080 A GB 759080A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium
- sheet
- layer
- intermetallic compound
- ges
- 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
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
- H01J19/28—Non-electron-emitting electrodes; Screens
- H01J19/30—Non-electron-emitting electrodes; Screens characterised by the material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
- H01J2893/0012—Constructional arrangements
- H01J2893/0019—Chemical composition and manufacture
- H01J2893/002—Chemical composition and manufacture chemical
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
759,080. Making composite electrodes. TELEFUNKEN GES., [formerly TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE GES.]. April 12, 1954 [April 10, 1953; March 5, 1954], No. 10647/54. Class 83 (2). In a method of making electrodes for electron discharge devices a sheet of metal which enters into intermetallic association with aluminium is coated with a layer of aluminium and after annealing and simultaneously forming the intermetallic compound is coated with a second layer of aluminium for subsequent conversion after the material has been shaped into electrode parts. Sheet nickel or iron of low oxygen content of about 3 mm. thickness with aluminium foil 0.1 mm. thick applied on one or both sides is rolled down to a total thickness of 0.15 mms. with the aluminium between 3 and 10 microns. The sheet is then annealed at 675‹ C. and the black intermetallic compound formed. A second layer of aluminium of about 15 microns is then applied by low pressure rolling and the sheet is stamped into electrode parts which are subsequently mounted in a discharge device and heated to a temperature of about 800‹ C. to form the intermetallic compound from the second layer of aluminium and degass the assembly. In a modification the composite material may be further annealed prior to the stamping operation. The composite material may also be degassed prior to insertion in the discharge device by heating, to 500‹ C. in air, hydrogen, nitrogen, coal gas or ammonia at atmospheric or a reduced pressure.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE759080X | 1953-04-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB759080A true GB759080A (en) | 1956-10-10 |
Family
ID=6660422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10647/54A Expired GB759080A (en) | 1953-04-10 | 1954-04-12 | Improvements in or relating to composite metallic sheet |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB759080A (en) |
-
1954
- 1954-04-12 GB GB10647/54A patent/GB759080A/en not_active Expired
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