CA2029438A1 - Process for electrolytically treating aluminium and aluminium alloys - Google Patents
Process for electrolytically treating aluminium and aluminium alloysInfo
- Publication number
- CA2029438A1 CA2029438A1 CA002029438A CA2029438A CA2029438A1 CA 2029438 A1 CA2029438 A1 CA 2029438A1 CA 002029438 A CA002029438 A CA 002029438A CA 2029438 A CA2029438 A CA 2029438A CA 2029438 A1 CA2029438 A1 CA 2029438A1
- Authority
- CA
- Canada
- Prior art keywords
- aluminium
- workpiece
- resulting
- subjecting
- blue
- 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
- 229910000838 Al alloy Inorganic materials 0.000 title abstract 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title abstract 4
- 229910052782 aluminium Inorganic materials 0.000 title abstract 4
- 239000004411 aluminium Substances 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 3
- 239000002253 acid Substances 0.000 abstract 2
- 238000004040 coloring Methods 0.000 abstract 2
- 239000008151 electrolyte solution Substances 0.000 abstract 2
- 239000010407 anodic oxide Substances 0.000 abstract 1
- 238000007743 anodising Methods 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 125000004432 carbon atom Chemical group C* 0.000 abstract 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 abstract 1
- 235000019646 color tone Nutrition 0.000 abstract 1
- 239000003086 colorant Substances 0.000 abstract 1
- 238000002203 pretreatment Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/12—Anodising more than once, e.g. in different baths
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/18—After-treatment, e.g. pore-sealing
- C25D11/20—Electrolytic after-treatment
- C25D11/22—Electrolytic after-treatment for colouring layers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Electrolytic Production Of Metals (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
A process for providing a variety of light to medium colours of anodised aluminium or aluminium alloys which comprises the steps of anodising an aluminium or aluminium alloy workpiece in an aqueous strong acid electrolyte solution by application of direct current to form on the workpiece a porous anodic oxide film having a thickness of at least about 3 microns; subjecting the resulting anodised workpiece to alternating current in an aqueous strong acid electrolyte solution comprising an organic carboxylic acid containing at least one reactive group bound to the carbon atom in the alpha-position; and electrolyti-cally colouring the workpiece. In a preferred embodiment resulting in deepened colour tones, including those in the blue to blue-gray range, one or more currentless "waiting periods" are maintained at various stages of the process. In another embodiment, improved colour uniform-ity is obtained by subjecting the workpiece prior to electrolytic colouring to a direct current pre-treatment step.
The resulting electrolytically coloured aluminium or aluminium alloy is particularly useful for architectural product.
The resulting electrolytically coloured aluminium or aluminium alloy is particularly useful for architectural product.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US43349889A | 1989-11-08 | 1989-11-08 | |
| US433,498 | 1989-11-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2029438A1 true CA2029438A1 (en) | 1991-05-09 |
| CA2029438C CA2029438C (en) | 2001-10-02 |
Family
ID=23720344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002029438A Expired - Fee Related CA2029438C (en) | 1989-11-08 | 1990-11-07 | Process for electrolytically treating aluminium and aluminium alloys |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JP2953474B2 (en) |
| CA (1) | CA2029438C (en) |
| CH (1) | CH682240A5 (en) |
| DE (1) | DE4034854C2 (en) |
| FR (1) | FR2654118B1 (en) |
| GB (1) | GB2237817B (en) |
| HK (1) | HK100696A (en) |
| IT (1) | IT1242327B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1207221A4 (en) * | 1999-06-25 | 2002-09-11 | Nippon Light Metal Co | ELECTROLYTIC COLORING PROCESS OF AN ALUMINUM MATERIAL |
| DE19938180C1 (en) * | 1999-08-17 | 2001-01-11 | Erbsloeh Ag | Process for electrolytically coloring aluminum or aluminum alloy workpieces comprises anodizing the workpiece to form a covering layer, treating layer with a direct current and coloring the workpiece in an electrolytic solution |
| JP4660760B2 (en) * | 2005-06-02 | 2011-03-30 | 国立大学法人広島大学 | Method for forming anodized film of aluminum and / or aluminum alloy and anodized film formed by the method |
| PL241203B1 (en) * | 2020-07-29 | 2022-08-22 | Canpack Spolka Akcyjna | The method of producing an interference coating |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1948552B2 (en) * | 1968-09-26 | 1971-04-22 | PROCESS FOR THE ELECTROLYTIC PRODUCTION OF COLORED OXIDE COATINGS ON ALUMINUM | |
| US3773631A (en) * | 1970-10-16 | 1973-11-20 | Blasberg Gmbh & Co Kg Friedr | Aqueous electrolytic bath for coloring anodic oxide layers on aluminum and aluminum alloy substrates and process for coloring said substrates |
| FR2178820A2 (en) * | 1972-04-04 | 1973-11-16 | Keller Eberhard | Colouring anodised aluminium - or alloys by electrolysing in modified tin salts soln |
| DE2548177A1 (en) * | 1975-10-28 | 1977-05-12 | Alcan Res & Dev | Electrolytically colouring anodised aluminium - is carried out after two step anodising using first sulphuric acid then phosphoric acid electrolyte |
| US4251330A (en) * | 1978-01-17 | 1981-02-17 | Alcan Research And Development Limited | Electrolytic coloring of anodized aluminium by means of optical interference effects |
| US4180443A (en) * | 1978-06-28 | 1979-12-25 | Reynolds Metals Company | Method for coloring aluminum |
| US4179342A (en) * | 1978-06-28 | 1979-12-18 | Reynolds Metals Company | Coating system method for coloring aluminum |
| ES8201232A1 (en) * | 1981-01-16 | 1981-12-01 | Ronain Sa | Process for electrolytically colouring a piece of aluminium or aluminium alloy. |
| EP0065421B1 (en) * | 1981-05-19 | 1985-08-28 | Sankyo Aluminium Industry Company Limited | Method of treating a surface of an aluminum to form a pattern thereon |
| IT1153213B (en) * | 1982-10-07 | 1987-01-14 | Grace Italiana Spa | ELECTRO-COLORING PROCESS OF ALUMINUM AND ITS ALLOYS IN YELLOW-ORANGE TONES |
| DE3530934C1 (en) * | 1985-08-29 | 1987-04-16 | Chemal Gmbh & Co Kg | Process for the uniform electrolytic coloring of anodized aluminum or aluminum alloys |
-
1990
- 1990-11-02 DE DE4034854A patent/DE4034854C2/en not_active Expired - Fee Related
- 1990-11-05 GB GB9023974A patent/GB2237817B/en not_active Expired - Fee Related
- 1990-11-06 IT IT48443A patent/IT1242327B/en active IP Right Grant
- 1990-11-06 CH CH3514/90A patent/CH682240A5/de not_active IP Right Cessation
- 1990-11-07 JP JP2300018A patent/JP2953474B2/en not_active Expired - Fee Related
- 1990-11-07 FR FR9013826A patent/FR2654118B1/en not_active Expired - Fee Related
- 1990-11-07 CA CA002029438A patent/CA2029438C/en not_active Expired - Fee Related
-
1996
- 1996-06-13 HK HK100696A patent/HK100696A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| HK100696A (en) | 1996-06-21 |
| GB2237817A (en) | 1991-05-15 |
| DE4034854A1 (en) | 1991-05-16 |
| JP2953474B2 (en) | 1999-09-27 |
| GB9023974D0 (en) | 1990-12-19 |
| DE4034854C2 (en) | 2000-08-17 |
| JPH03207895A (en) | 1991-09-11 |
| GB2237817B (en) | 1994-03-02 |
| IT9048443A1 (en) | 1992-05-06 |
| FR2654118A1 (en) | 1991-05-10 |
| IT1242327B (en) | 1994-03-04 |
| CA2029438C (en) | 2001-10-02 |
| FR2654118B1 (en) | 1993-06-25 |
| CH682240A5 (en) | 1993-08-13 |
| IT9048443A0 (en) | 1990-11-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |