GB482856A - Improvements in or relating to electrolytic condensers - Google Patents
Improvements in or relating to electrolytic condensersInfo
- Publication number
- GB482856A GB482856A GB18001/37A GB1800137A GB482856A GB 482856 A GB482856 A GB 482856A GB 18001/37 A GB18001/37 A GB 18001/37A GB 1800137 A GB1800137 A GB 1800137A GB 482856 A GB482856 A GB 482856A
- Authority
- GB
- United Kingdom
- Prior art keywords
- thickness
- aluminium
- stages
- per cent
- fine grain
- 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
- 239000004411 aluminium Substances 0.000 abstract 3
- 229910052782 aluminium Inorganic materials 0.000 abstract 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 2
- 238000005530 etching Methods 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 238000000137 annealing Methods 0.000 abstract 1
- 239000013078 crystal Substances 0.000 abstract 1
- 239000011888 foil Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
- 238000005496 tempering Methods 0.000 abstract 1
- 230000001052 transient effect Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
- H01G9/045—Electrodes or formation of dielectric layers thereon characterised by the material based on aluminium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
- H01G9/0425—Electrodes or formation of dielectric layers thereon characterised by the material specially adapted for cathode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- ing And Chemical Polishing (AREA)
Abstract
482,856. Electrolytic condensers. RADIOWERK E. SCHRACK AKT.-GES. June 28, 1937, Nos. 18001 and 18002. Convention dates, July 1, 1936 and Nov. 28, 1936. [Class 37] [Also in Groups XVI and XXII] The anode, and possibly the cathode, of an electrolytic condenser is made of etched aluminium at least 99À8 per cent pure, having a crystal grain size of less than À001 mm. This fine grain structure may be obtained by any known method. Aluminium in sheet of 2 mm. thickness may be rolled to À2 mm. thickness in one operation or, if in stages, no heating beyond a short-period annealing is allowed between stages. Tempering by transient heating not above 270‹ C. may be carried out, after rolling. Aluminium of greater than 99À98 per cent purity is preferred. Before etching, the usual oxide film is removed mechanically. With the purest metal, etching may be effected by a concentrated hydrochloric acid and a spongy surface of fine grain is produced which may extend throughout the thickness of the foil, the system of crystallites having then a fibrous form.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT482856X | 1936-07-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB482856A true GB482856A (en) | 1938-04-06 |
Family
ID=3674971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18001/37A Expired GB482856A (en) | 1936-07-01 | 1937-06-28 | Improvements in or relating to electrolytic condensers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB482856A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE975381C (en) * | 1941-05-25 | 1961-11-16 | Siemens Ag | Electrolytic capacitor |
| EP0272926A2 (en) * | 1986-12-24 | 1988-06-29 | Showa Aluminum Kabushiki Kaisha | An aluminum capacitor plate for electrolytic capacitors and process for making same |
-
1937
- 1937-06-28 GB GB18001/37A patent/GB482856A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE975381C (en) * | 1941-05-25 | 1961-11-16 | Siemens Ag | Electrolytic capacitor |
| EP0272926A2 (en) * | 1986-12-24 | 1988-06-29 | Showa Aluminum Kabushiki Kaisha | An aluminum capacitor plate for electrolytic capacitors and process for making same |
| EP0272926A3 (en) * | 1986-12-24 | 1989-07-26 | Showa Aluminum Kabushiki Kaisha | An aluminum capacitor plate for electrolytic capacitors and process for making same |
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