GB907264A - Improvements in or relating to electrolytic treatment of metals more particularly aluminium for increasing the effective surface - Google Patents
Improvements in or relating to electrolytic treatment of metals more particularly aluminium for increasing the effective surfaceInfo
- Publication number
- GB907264A GB907264A GB3201259A GB3201259A GB907264A GB 907264 A GB907264 A GB 907264A GB 3201259 A GB3201259 A GB 3201259A GB 3201259 A GB3201259 A GB 3201259A GB 907264 A GB907264 A GB 907264A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium
- going
- etching
- solution
- positive
- 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 4
- 229910052782 aluminium Inorganic materials 0.000 title abstract 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title abstract 4
- 229910052751 metal Inorganic materials 0.000 title abstract 3
- 239000002184 metal Substances 0.000 title abstract 3
- 150000002739 metals Chemical class 0.000 title abstract 2
- 238000005530 etching Methods 0.000 abstract 3
- 239000003792 electrolyte Substances 0.000 abstract 2
- 239000005030 aluminium foil Substances 0.000 abstract 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 abstract 1
- 239000004327 boric acid Substances 0.000 abstract 1
- 239000011888 foil Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 229910052715 tantalum Inorganic materials 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
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
- H01G9/055—Etched foil electrodes
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/02—Etching
- C25F3/04—Etching of light metals
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Weting (AREA)
- ing And Chemical Polishing (AREA)
Abstract
907,264. Electrolytically increasing the surface area of metals. PLESSEY CO. Ltd. Sept. 19, 1960 [Sept. 21, 1959], No. 32012/59. Class 41. In electrolytically etching aluminium or other metal foils to increase their surface area a bi-directional current is used having a voltage wave cycle by far the greater portion of which is positive-going but which is such that successive positive-going portions are separated by short negative-going portions of considerably less amplitude than the positive-going, e.g. a cycle as shown in Fig. 1. At a given frequency there is an optimum value for the minimum voltage in a cycle. The etching may be carried out in a single step by passing the aluminium foil through an electrolytic cell in which it forms the anode, the cathode or cathodes of which is a plate or plates of aluminium. Possible electrolytes are HCl with dissolved A1 at pH 3.5; AlCl 3 solution with water added until the density is 1.005 g/ml.; the AlCl 3 solution with added HNO 3 . The aluminium, after being etched, is formed and aged at 500 volts D.C. in a solution of boric acid. It is stated that the method of etching is believed to be applicable to tantalum subject to the choice of a suitable electrolyte.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP0025717 | 1960-09-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB907264A true GB907264A (en) | 1962-10-03 |
Family
ID=7370194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3201259A Expired GB907264A (en) | 1960-09-20 | 1959-09-21 | Improvements in or relating to electrolytic treatment of metals more particularly aluminium for increasing the effective surface |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1446026A1 (en) |
| GB (1) | GB907264A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2810308A1 (en) * | 1977-04-13 | 1978-10-26 | Polychrome Corp | PROCESS FOR ELECTROLYTIC CORES OF ALUMINUM |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1548689A (en) * | 1975-11-06 | 1979-07-18 | Nippon Light Metal Res Labor | Process for electrograining aluminum substrates for lithographic printing |
| JPS55158298A (en) * | 1979-05-30 | 1980-12-09 | Fuji Photo Film Co Ltd | Manufacture of support for lithographic plate |
| JPS6068997A (en) * | 1983-09-27 | 1985-04-19 | Fuji Photo Film Co Ltd | Manufacture of aluminum base for planographic printing plate |
| DE4333935A1 (en) * | 1993-10-05 | 1995-04-06 | Axel Dipl Ing Fechner | Process and arrangement for etching noble metals |
| US5486282A (en) * | 1994-11-30 | 1996-01-23 | Ibm Corporation | Electroetching process for seed layer removal in electrochemical fabrication of wafers |
-
1959
- 1959-09-21 GB GB3201259A patent/GB907264A/en not_active Expired
-
1960
- 1960-09-20 DE DE19601446026 patent/DE1446026A1/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2810308A1 (en) * | 1977-04-13 | 1978-10-26 | Polychrome Corp | PROCESS FOR ELECTROLYTIC CORES OF ALUMINUM |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1446026A1 (en) | 1968-11-07 |
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