GB823457A - Improvements in or relating to methods of coating aluminium electrodes with insulating oxide layers - Google Patents
Improvements in or relating to methods of coating aluminium electrodes with insulating oxide layersInfo
- Publication number
- GB823457A GB823457A GB1558457A GB1558457A GB823457A GB 823457 A GB823457 A GB 823457A GB 1558457 A GB1558457 A GB 1558457A GB 1558457 A GB1558457 A GB 1558457A GB 823457 A GB823457 A GB 823457A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relating
- methods
- oxide layers
- aluminium electrodes
- insulating oxide
- 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 title abstract 2
- 229910052782 aluminium Inorganic materials 0.000 title abstract 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title abstract 2
- 238000000576 coating method Methods 0.000 title abstract 2
- 239000011248 coating agent Substances 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 abstract 2
- 239000004160 Ammonium persulphate Substances 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 150000001342 alkaline earth metals Chemical class 0.000 abstract 1
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 abstract 1
- 235000019395 ammonium persulphate Nutrition 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 150000002978 peroxides Chemical class 0.000 abstract 1
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 1
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- 239000000126 substance Substances 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
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/60—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using alkaline aqueous solutions with pH greater than 8
- C23C22/66—Treatment of aluminium or alloys based thereon
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
Dielectric oxide coatings are produced on aluminium electrodes for electrolytic capacitors by treatment with an alkaline aqueous solution which contains a substance yielding atomic oxygen. The solution should not contain metals other than alkali or alkaline earth metals and may contain ammonia or sodium carbonate together with a peroxide such as hydrogen peroxide, sodium peroxide or ammonium persulphate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP16295A DE1091402B (en) | 1956-05-18 | 1956-05-18 | Process for the chemical production of dielectric oxide layers on electrodes made of aluminum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB823457A true GB823457A (en) | 1959-11-11 |
Family
ID=7365957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1558457A Expired GB823457A (en) | 1956-05-18 | 1957-05-16 | Improvements in or relating to methods of coating aluminium electrodes with insulating oxide layers |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH354310A (en) |
| DE (1) | DE1091402B (en) |
| FR (1) | FR1175275A (en) |
| GB (1) | GB823457A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1981001424A1 (en) * | 1979-11-09 | 1981-05-28 | Inst Energiteknik | A process for the preparation of a dark-coloured,wave-length selective oxide film on aluminium |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB571307A (en) * | 1943-11-08 | 1945-08-20 | Buttons Ltd | Improvements relating to protective treatment for metal surfaces |
| DE866435C (en) * | 1951-08-23 | 1953-02-09 | Edelstahlwerke J C Soeding & H | Process for surface treatment, especially of wires made of resistance alloys |
-
1956
- 1956-05-18 DE DEP16295A patent/DE1091402B/en active Pending
-
1957
- 1957-05-16 GB GB1558457A patent/GB823457A/en not_active Expired
- 1957-05-16 FR FR1175275D patent/FR1175275A/en not_active Expired
- 1957-05-16 CH CH354310D patent/CH354310A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1981001424A1 (en) * | 1979-11-09 | 1981-05-28 | Inst Energiteknik | A process for the preparation of a dark-coloured,wave-length selective oxide film on aluminium |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1091402B (en) | 1960-10-20 |
| FR1175275A (en) | 1959-03-23 |
| CH354310A (en) | 1961-05-15 |
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