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 materials

Info

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
Application number
GB4799172A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Riken Keikinzoku Kogyo KK
Original Assignee
Riken Keikinzoku Kogyo KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP46083336A external-priority patent/JPS5242732B2/ja
Priority claimed from JP46083338A external-priority patent/JPS5242734B2/ja
Priority claimed from JP46083337A external-priority patent/JPS5242733B2/ja
Priority claimed from JP9585071A external-priority patent/JPS5021422B2/ja
Priority claimed from JP4648772A external-priority patent/JPS537379B2/ja
Priority claimed from JP5252872A external-priority patent/JPS5332351B2/ja
Priority claimed from JP6662472A external-priority patent/JPS5232337B2/ja
Application filed by Riken Keikinzoku Kogyo KK filed Critical Riken Keikinzoku Kogyo KK
Publication of GB1391808A publication Critical patent/GB1391808A/en
Expired legal-status Critical Current

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)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Paints Or Removers (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 0-12‹C 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 10-30‹C; 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.
GB4799172A 1971-10-22 1972-10-18 Anodizing methods for forming a coloured oxide coating on surfaces of aluminium or aluminum alloy materials Expired GB1391808A (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP46083336A JPS5242732B2 (en) 1971-10-22 1971-10-22
JP46083338A JPS5242734B2 (en) 1971-10-22 1971-10-22
JP46083337A JPS5242733B2 (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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4001473A1 (en) * 2020-11-13 2022-05-25 Raytheon Technologies Corporation Mixed acid anodization

Also Published As

Publication number Publication date
US3836439A (en) 1974-09-17
CA1012088A (en) 1977-06-14
IT969776B (en) 1974-04-10

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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