GB1391808A - Anodizing methods for forming a coloured oxide coating on surfaces of aluminium or aluminum alloy materials - Google Patents
Anodizing methods for forming a coloured oxide coating on surfaces of aluminium or aluminum alloy materialsInfo
- Publication number
- GB1391808A GB1391808A GB4799172A GB4799172A GB1391808A GB 1391808 A GB1391808 A GB 1391808A GB 4799172 A GB4799172 A GB 4799172A GB 4799172 A GB4799172 A GB 4799172A GB 1391808 A GB1391808 A GB 1391808A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anodizing
- solution
- aluminium
- oxide coating
- hno
- 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
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
- C25D11/14—Producing integrally coloured layers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
1391808 Anodizing aluminium RIKEN KEIKINZOKU KOGYO KK 18 Oct 1972 [22 Oct 1971 (3) 30 Nov 1971 12 May 1972 29 May 1972 5 July 1972 47991/72 Heading C7B A coloured oxide coating is produced on Al or Al alloy material by anodizing the material in an aqueous solution of 0.5-5 g/100 ml of oxalic acid and 0.05-0.5 g/100 ml of H 2 SO 4 . The process also includes one of the following three alternative sets of conditions:- (a) a temperature of 0-12C and anodizing for 3-15 mins; (b) the solution also containing 0.05-0.5 g/100 ml HNO 3 and a solution temperature of 10-30C; and (c) the solution also containing 0.05-0.5 g/100 ml HNO 3 and 0.1-10.0 g/100 ml H 3 BO 3 , a solution temperature of 10-40 C and anodizing for 3-120 mins. In the process the solution may additionally contain Al ions, e.g. anodically dissolved Al or Al added as aluminium oxalate or sulphate. Direct current used in the anodizing may include ripple obtained by rectifying A.C. The Al material may be firstly degreased with an aqueous solution of NaOH and then neutralized with an aqueous solution of HNO 3 . Before the colour anodizing, the Al material may be pre-anodized by a usual method.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP46083338A JPS5242734B2 (en) | 1971-10-22 | 1971-10-22 | |
| JP46083337A JPS5242733B2 (en) | 1971-10-22 | 1971-10-22 | |
| JP46083336A JPS5242732B2 (en) | 1971-10-22 | 1971-10-22 | |
| JP9585071A JPS5021422B2 (en) | 1971-11-30 | 1971-11-30 | |
| JP4648772A JPS537379B2 (en) | 1972-05-12 | 1972-05-12 | |
| JP5252872A JPS5332351B2 (en) | 1972-05-29 | 1972-05-29 | |
| JP6662472A JPS5232337B2 (en) | 1972-07-05 | 1972-07-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1391808A true GB1391808A (en) | 1975-04-23 |
Family
ID=27564642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4799172A Expired GB1391808A (en) | 1971-10-22 | 1972-10-18 | Anodizing methods for forming a coloured oxide coating on surfaces of aluminium or aluminum alloy materials |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3836439A (en) |
| CA (1) | CA1012088A (en) |
| GB (1) | GB1391808A (en) |
| IT (1) | IT969776B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4001473A1 (en) * | 2020-11-13 | 2022-05-25 | Raytheon Technologies Corporation | Mixed acid anodization |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50157234A (en) * | 1974-05-22 | 1975-12-19 | ||
| US4144142A (en) * | 1975-11-04 | 1979-03-13 | Riken Keikinzoku Kogyo Kabushiki Kaisha | Method for producing colored anodic film on aluminum-based material |
| US4894127A (en) * | 1989-05-24 | 1990-01-16 | The Boeing Company | Method for anodizing aluminum |
| US5288372A (en) * | 1992-07-07 | 1994-02-22 | Alumax Inc. | Altering a metal body surface |
| US5963435A (en) * | 1997-03-25 | 1999-10-05 | Gianna Sweeney | Apparatus for coating metal with oxide |
| US7044760B2 (en) | 1997-07-30 | 2006-05-16 | Thomas & Betts International, Inc. | Separable electrical connector assembly |
| CN106591919B (en) * | 2016-12-09 | 2018-12-11 | 深圳市新合富力科技有限公司 | Aluminium material surface nanometered disposal technique |
-
1972
- 1972-10-17 CA CA154,496A patent/CA1012088A/en not_active Expired
- 1972-10-18 GB GB4799172A patent/GB1391808A/en not_active Expired
- 1972-10-20 US US00299329A patent/US3836439A/en not_active Expired - Lifetime
- 1972-10-20 IT IT7230771A patent/IT969776B/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4001473A1 (en) * | 2020-11-13 | 2022-05-25 | Raytheon Technologies Corporation | Mixed acid anodization |
| US12134828B2 (en) | 2020-11-13 | 2024-11-05 | Rtx Corporation | Mixed acid anodization |
Also Published As
| Publication number | Publication date |
|---|---|
| IT969776B (en) | 1974-04-10 |
| US3836439A (en) | 1974-09-17 |
| CA1012088A (en) | 1977-06-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |