GB723950A - Improvements in and relating to methods of forming oxide films on electrodes for electrolytic capacitors - Google Patents
Improvements in and relating to methods of forming oxide films on electrodes for electrolytic capacitorsInfo
- Publication number
- GB723950A GB723950A GB26254/52A GB2625452A GB723950A GB 723950 A GB723950 A GB 723950A GB 26254/52 A GB26254/52 A GB 26254/52A GB 2625452 A GB2625452 A GB 2625452A GB 723950 A GB723950 A GB 723950A
- Authority
- GB
- United Kingdom
- Prior art keywords
- temperature
- electrode
- ethanolamine
- electrodes
- capacitor
- 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
- 239000003990 capacitor Substances 0.000 title abstract 5
- 238000000034 method Methods 0.000 title abstract 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract 7
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 abstract 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 abstract 3
- 239000003792 electrolyte Substances 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- WYXIGTJNYDDFFH-UHFFFAOYSA-Q triazanium;borate Chemical compound [NH4+].[NH4+].[NH4+].[O-]B([O-])[O-] WYXIGTJNYDDFFH-UHFFFAOYSA-Q 0.000 abstract 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 abstract 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 abstract 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 abstract 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- C25D11/26—Anodisation of refractory metals or alloys based thereon
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
723,950. Dielectric films on capacitor electrodes; capacitors. GENERAL ELECTRIC CO. Oct. 20,1952 [Oct. 27,1951], No. 26254/52. Drawings to Specification. Classes 37 and 41. A method of forming a dielectric film on a capacitor electrode consists in subjecting the electrode as an anode to a forming voltage at a temperature of at least 150‹ C. while immersed in a bath consisting of the residue obtained by heating a mixture of an ethanolamine, ethylene glycol and ammonium borate at a temperature of at least 150‹ C. The ethanolamine is preferably triethanolamine, but may be ethanolamine or diethanolamine, or more than one of these. The mixture is preferably heated to 250‹ C. until about 60 per cent is removed by evaporation, and the residue electrolyte may be used molten at a temperature between 160‹ and 250‹ C., preferably about 200‹ C. The electrode may be tantalum foil, and a D.C. voltage may be used not exceeding the intended working voltage of the capacitor. The electrode may be given a preliminary forming treatment as anode in an electrolyte comprising a solution of ammonium borate in a glycol, such as ethylene or diethylene glycol, and a small amount of water, and at a temperature from 85‹ to 100‹ C.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US723950XA | 1951-10-27 | 1951-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB723950A true GB723950A (en) | 1955-02-16 |
Family
ID=22107279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26254/52A Expired GB723950A (en) | 1951-10-27 | 1952-10-20 | Improvements in and relating to methods of forming oxide films on electrodes for electrolytic capacitors |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE515090A (en) |
| FR (1) | FR1073971A (en) |
| GB (1) | GB723950A (en) |
-
0
- BE BE515090D patent/BE515090A/xx unknown
-
1952
- 1952-10-20 GB GB26254/52A patent/GB723950A/en not_active Expired
- 1952-10-23 FR FR1073971D patent/FR1073971A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE515090A (en) | |
| FR1073971A (en) | 1954-09-30 |
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