GB1056609A - Foil and method for improving the capacitance thereof - Google Patents
Foil and method for improving the capacitance thereofInfo
- Publication number
- GB1056609A GB1056609A GB4103765A GB4103765A GB1056609A GB 1056609 A GB1056609 A GB 1056609A GB 4103765 A GB4103765 A GB 4103765A GB 4103765 A GB4103765 A GB 4103765A GB 1056609 A GB1056609 A GB 1056609A
- Authority
- GB
- United Kingdom
- Prior art keywords
- foil
- capacitance
- improving
- aluminium
- alloys
- 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
- 239000011888 foil Substances 0.000 title abstract 3
- 229910000838 Al alloy Inorganic materials 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 abstract 1
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 abstract 1
- 238000007743 anodising Methods 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 235000019837 monoammonium phosphate Nutrition 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052725 zinc Inorganic materials 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
- H01G9/0029—Processes of manufacture
- H01G9/0032—Processes of manufacture formation of the dielectric layer
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/16—Pretreatment, e.g. desmutting
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical Treatment Of Metals (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Foil of aluminium or alloys containing 95% or more of Al are formed with an oxide coating by first heating in air or oxygen e.g. at 450 DEG C. to 550 DEG C. for 5 to 10 mins. and then electrolytically anodizing. Preferably ammonium dihydrogenphosphate solution is applied at 165V. Graphs are given showing an increased electrical capacity of 20 per cent by the 2-stage treatment. The foil surface should be wholly amorphous and free from crystallinity. Aluminium alloys of Zn, Mg, Si, Mn, Cu, Fe are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US40074164A | 1964-10-01 | 1964-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1056609A true GB1056609A (en) | 1967-01-25 |
Family
ID=23584816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4103765A Expired GB1056609A (en) | 1964-10-01 | 1965-09-27 | Foil and method for improving the capacitance thereof |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1496972A1 (en) |
| GB (1) | GB1056609A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2164058A (en) * | 1984-09-04 | 1986-03-12 | Sprague Electric Co | A process for making low-voltage aluminium foil for electrolytic capacitor electrodes |
| FR2849285A1 (en) * | 2002-12-23 | 2004-06-25 | Batscap Sa | Unit for heating a single or multiple layer film for production of electrical energy storage assemblies has a duct section through which hot and cold air flows are alternately circulated over the film |
-
1965
- 1965-09-25 DE DE1965R0041607 patent/DE1496972A1/en active Pending
- 1965-09-27 GB GB4103765A patent/GB1056609A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2164058A (en) * | 1984-09-04 | 1986-03-12 | Sprague Electric Co | A process for making low-voltage aluminium foil for electrolytic capacitor electrodes |
| FR2849285A1 (en) * | 2002-12-23 | 2004-06-25 | Batscap Sa | Unit for heating a single or multiple layer film for production of electrical energy storage assemblies has a duct section through which hot and cold air flows are alternately circulated over the film |
| WO2004059673A1 (en) * | 2002-12-23 | 2004-07-15 | Batscap | Dynamic oven for a machine for spooling films |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1496972A1 (en) | 1970-05-27 |
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