GB761647A - Improvements relating to metallic foil - Google Patents
Improvements relating to metallic foilInfo
- Publication number
- GB761647A GB761647A GB36626/54A GB3662654A GB761647A GB 761647 A GB761647 A GB 761647A GB 36626/54 A GB36626/54 A GB 36626/54A GB 3662654 A GB3662654 A GB 3662654A GB 761647 A GB761647 A GB 761647A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- volume
- metallic foil
- parts
- foil
- 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 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 2
- 229910017604 nitric acid Inorganic materials 0.000 abstract 2
- 235000011149 sulphuric acid Nutrition 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 1
- 238000007743 anodising Methods 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 abstract 1
Classifications
-
- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F3/00—Brightening metals by chemical means
- C23F3/04—Heavy metals
- C23F3/06—Heavy metals with acidic solutions
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
A smooth surface is produced on metallic foil by subjecting the rough surface of as-rolled foil to a solution consisting of 40-80 per cent by volume 95.5 per cent H2SO4, 15-40 per cent by volume 70 per cent HNO3, 10-35 per cent by volume 48 per cent HF and up to 20 per cent by volume H2O. Preferably the solution consists of, by volume, 5 parts H2SO4, 2 parts HNO3 and 1.5 parts HF (acid strengths being as above). The foil, which may be of Ta, Ti or Zr, may subsequently be oxidized as by anodizing and used as an element in an electrolytic capacitor.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US761647XA | 1953-12-28 | 1953-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB761647A true GB761647A (en) | 1956-11-14 |
Family
ID=22130338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB36626/54A Expired GB761647A (en) | 1953-12-28 | 1954-12-17 | Improvements relating to metallic foil |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB761647A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007026086A1 (en) * | 2007-06-04 | 2008-12-11 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | A method of forming a dielectric thin film on a titanium substrate, a titanium substrate with a thin film produced by the method, and its use |
-
1954
- 1954-12-17 GB GB36626/54A patent/GB761647A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007026086A1 (en) * | 2007-06-04 | 2008-12-11 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | A method of forming a dielectric thin film on a titanium substrate, a titanium substrate with a thin film produced by the method, and its use |
| DE102007026086B4 (en) * | 2007-06-04 | 2009-03-05 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | A method of forming a dielectric thin film on a titanium substrate, a titanium substrate with a thin film produced by the method, and its use |
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