JPS5576099A - Production of electrode for aluminum electrolytic capacitor - Google Patents
Production of electrode for aluminum electrolytic capacitorInfo
- Publication number
- JPS5576099A JPS5576099A JP14968078A JP14968078A JPS5576099A JP S5576099 A JPS5576099 A JP S5576099A JP 14968078 A JP14968078 A JP 14968078A JP 14968078 A JP14968078 A JP 14968078A JP S5576099 A JPS5576099 A JP S5576099A
- Authority
- JP
- Japan
- Prior art keywords
- surface expansion
- foil
- pits
- sodium thiosulfate
- temperature
- 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.)
- Granted
Links
Landscapes
- ing And Chemical Polishing (AREA)
Abstract
PURPOSE: To form the aluminum electrode foil of a high surface expansion rate and tensile strength by letting sodium thiosulfate exist in a high-concentration high- temperature hydrochloric acid solution and applying DC electrolytic etching under the specific conditions.
CONSTITUTION: At the time of expanding the surface area of an Al metal foil through electrolytic etching, sodium thiosulfate is added at 0.1% or more into the bath of HCl concentrations 3W15%, and while the solution temperature is being maintained at 75°C or more, the foil is pretreated by using the electric quantity of DC 2W30 Coulomb/cm2, after which it is subjected to deep etching at current density 0.02W0.1A/cm2 DC at the same temperature, whereby the pits of diameters made 4 times laryer than those by conventional methods are formed. Because of this, the decrease in surface expansion rare in the high pressure region is small and since the shape of the pits becomes perpendicular and regular cylindrical form, the surface expansion rate becomes extremely high.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14968078A JPS5576099A (en) | 1978-12-05 | 1978-12-05 | Production of electrode for aluminum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14968078A JPS5576099A (en) | 1978-12-05 | 1978-12-05 | Production of electrode for aluminum electrolytic capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5576099A true JPS5576099A (en) | 1980-06-07 |
| JPS5747756B2 JPS5747756B2 (en) | 1982-10-12 |
Family
ID=15480468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14968078A Granted JPS5576099A (en) | 1978-12-05 | 1978-12-05 | Production of electrode for aluminum electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5576099A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5766616A (en) * | 1980-10-13 | 1982-04-22 | Showa Aluminium Co Ltd | Method of producing alumihum foil for electrolytic condenser electrode |
| JPS5766620A (en) * | 1980-10-13 | 1982-04-22 | Showa Aluminium Co Ltd | Method of etching aluminum foil for electrolytic conddnser electrode |
| JPS6063916A (en) * | 1984-07-31 | 1985-04-12 | 昭和アルミニウム株式会社 | Method of electrolytically etching aluminum foil for electrolytic condenser electrode |
-
1978
- 1978-12-05 JP JP14968078A patent/JPS5576099A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5766616A (en) * | 1980-10-13 | 1982-04-22 | Showa Aluminium Co Ltd | Method of producing alumihum foil for electrolytic condenser electrode |
| JPS5766620A (en) * | 1980-10-13 | 1982-04-22 | Showa Aluminium Co Ltd | Method of etching aluminum foil for electrolytic conddnser electrode |
| JPS6225247B2 (en) * | 1980-10-13 | 1987-06-02 | Showa Aluminium Co Ltd | |
| JPS6225248B2 (en) * | 1980-10-13 | 1987-06-02 | Showa Aluminium Co Ltd | |
| JPS6063916A (en) * | 1984-07-31 | 1985-04-12 | 昭和アルミニウム株式会社 | Method of electrolytically etching aluminum foil for electrolytic condenser electrode |
| JPH0315816B2 (en) * | 1984-07-31 | 1991-03-04 | Showa Aluminium Co Ltd |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5747756B2 (en) | 1982-10-12 |
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