GB949148A - Improvements relating to the treatment of aluminium surfaces - Google Patents
Improvements relating to the treatment of aluminium surfacesInfo
- Publication number
- GB949148A GB949148A GB34198/62A GB3419862A GB949148A GB 949148 A GB949148 A GB 949148A GB 34198/62 A GB34198/62 A GB 34198/62A GB 3419862 A GB3419862 A GB 3419862A GB 949148 A GB949148 A GB 949148A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulsating
- pulsation
- treatment
- aluminium
- improvements relating
- 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
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 abstract 2
- 230000010349 pulsation Effects 0.000 abstract 2
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 abstract 1
- 108091006629 SLC13A2 Proteins 0.000 abstract 1
- 229910001514 alkali metal chloride Inorganic materials 0.000 abstract 1
- 239000005030 aluminium foil Substances 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 abstract 1
- 238000005530 etching Methods 0.000 abstract 1
- 239000011888 foil Substances 0.000 abstract 1
- 229910052736 halogen Inorganic materials 0.000 abstract 1
- 150000002367 halogens Chemical class 0.000 abstract 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 239000000243 solution 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
- H01G9/004—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
- B23H3/02—Electric circuits specially adapted therefor, e.g. power supply, control, preventing short circuits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
- B23H3/08—Working media
-
- 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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- ing And Chemical Polishing (AREA)
Abstract
An aluminium surface, particularly foil for an electrolytic capacitor or for lithographic use, is electrolytically etched under a pulsating D.C., of which the degree of pulsation is less than 50% and the average density is more than 50 amp./dm.2, in an aqueous solution of a halogen-containing salt, such as an alkali metal chloride, e.g. NaC1, bromide, iodide or chlorate, of concentration at least 3-molar and temperature from 70 DEG C. to its boiling-point. The solution may also contain 1-5% HC1. Preferably an unsmoothed rectified current from a 1-or 3-phase A.C. of sine wave form is used as the pulsating D.C., the frequency of pulsation varying between 50 and 2000 c/s. Prior to etching, the aluminium foil may be degreased and pickled.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1072961A CH398244A (en) | 1961-09-15 | 1961-09-15 | Process for electrolytic etching of aluminum surfaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB949148A true GB949148A (en) | 1964-02-12 |
Family
ID=4366203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34198/62A Expired GB949148A (en) | 1961-09-15 | 1962-09-06 | Improvements relating to the treatment of aluminium surfaces |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3249523A (en) |
| BE (1) | BE622454A (en) |
| CH (1) | CH398244A (en) |
| GB (1) | GB949148A (en) |
| NL (1) | NL282834A (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1564486A1 (en) * | 1951-01-28 | 1970-03-19 | Paehr Dr Hans Werner | Process for enlarging the effective surface of aluminum electrodes or foils for electrolytic capacitors |
| US3442810A (en) * | 1966-02-25 | 1969-05-06 | Garman Co Inc | Chemical polishing composition and method |
| NL6705053A (en) * | 1966-04-18 | 1967-10-19 | ||
| US4035209A (en) * | 1972-06-20 | 1977-07-12 | Tokai Metals Co., Ltd. | Method of preventing deterioration by heat |
| DE2537724C3 (en) * | 1975-08-25 | 1981-02-26 | Hoechst Ag, 6000 Frankfurt | Use of a process for the electrochemical roughening of aluminum in the production of planographic printing plate carriers |
| NL8006998A (en) * | 1980-12-23 | 1982-07-16 | Philips Nv | ALUMINUM FOIL FOR ELECTROLYTIC CONDENSERS. |
| JPS57126126A (en) * | 1981-01-29 | 1982-08-05 | Yoshiyuki Okamoto | Method of etching aluminum foil for electrolytic condenser |
| US4332651A (en) * | 1981-05-20 | 1982-06-01 | Sprague Electric Company | AC Etching of aluminum capacitor foil |
| DE3127330A1 (en) * | 1981-07-10 | 1983-01-27 | United Chemi-Con, Inc., 60018 Rosemont, Ill. | Process for the electrolytic etching of aluminium |
| JPS6079707A (en) * | 1983-10-06 | 1985-05-07 | 松下電器産業株式会社 | Aluminum electrolytic condenser |
| US4735696A (en) * | 1987-04-27 | 1988-04-05 | Polychrome Corporation | Method of electrolytically graining aluminum metal sheets suitable for lithographic plate supports |
| US4886572A (en) * | 1987-12-14 | 1989-12-12 | Ricoh Company, Ltd. | Composite electrode comprising a bonded body of aluminum and electroconductive polymer and electric cell using such a composite electrode |
| US5405493A (en) * | 1994-01-26 | 1995-04-11 | Kdk Corporation | Method of etching aluminum foil |
| US6558231B1 (en) * | 2000-10-17 | 2003-05-06 | Faraday Technology Marketing Goup, Llc | Sequential electromachining and electropolishing of metals and the like using modulated electric fields |
| US20030146191A1 (en) * | 2002-02-07 | 2003-08-07 | Ho-Ming Tong | Etching method for nickel-vanadium alloy |
| EP1870497A1 (en) * | 2006-06-23 | 2007-12-26 | Siemens Aktiengesellschaft | Method for the electrochemical stripping of a metallic coating from an element |
| EP1890004A1 (en) * | 2006-08-08 | 2008-02-20 | Siemens Aktiengesellschaft | Method for the production of a deposited layer from recycled layer material |
| DE102006044416A1 (en) * | 2006-09-18 | 2008-03-27 | Siemens Ag | Process for the electrochemical coating or stripping of components |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB914836A (en) * | 1900-01-01 | |||
| US2930741A (en) * | 1960-03-29 | Electrolytic capacitors | ||
| US2699382A (en) * | 1951-02-14 | 1955-01-11 | Aluminum Walzwerke Singen G M | Method of etching aluminum foils |
| US2755237A (en) * | 1951-07-25 | 1956-07-17 | Sprague Electric Co | Electrolytically etched condenser electrode |
| US2755238A (en) * | 1955-03-25 | 1956-07-17 | Sprague Electric Co | Electrolytic etching and oxidizing of aluminum |
| GB902827A (en) * | 1959-02-20 | 1962-08-09 | British Aluminium Co Ltd | Improvements in or relating to the treatment of aluminium |
-
0
- NL NL282834D patent/NL282834A/xx unknown
- BE BE622454D patent/BE622454A/xx unknown
-
1961
- 1961-09-15 CH CH1072961A patent/CH398244A/en unknown
-
1962
- 1962-09-06 GB GB34198/62A patent/GB949148A/en not_active Expired
- 1962-09-11 US US222906A patent/US3249523A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CH398244A (en) | 1965-08-31 |
| NL282834A (en) | |
| US3249523A (en) | 1966-05-03 |
| BE622454A (en) |
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