GB1070782A - Improvements in anodising aluminium and its alloys - Google Patents

Improvements in anodising aluminium and its alloys

Info

Publication number
GB1070782A
GB1070782A GB2369563A GB2369563A GB1070782A GB 1070782 A GB1070782 A GB 1070782A GB 2369563 A GB2369563 A GB 2369563A GB 2369563 A GB2369563 A GB 2369563A GB 1070782 A GB1070782 A GB 1070782A
Authority
GB
United Kingdom
Prior art keywords
sulphuric acid
aluminium
alloys
concentration
oxalic acid
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
GB2369563A
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to GB2369563A priority Critical patent/GB1070782A/en
Publication of GB1070782A publication Critical patent/GB1070782A/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
    • C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Weting (AREA)

Abstract

In a method of formation of an anodic film on aluminium and aluminium alloys, the electrolyte used contains sulphuric acid and one or more weakly basic amides; e.g. urea, acetamide or benzamide. The molecular concentration of the amide is preferably greater than one eighth of the molecular concentration of sulphuric acid. The sulphuric acid may be of a concentration of from 90 to 850 gms/litre. Oxalic acid; salts of sodium, potassium, ammonium, the primary aliphatic amines or oxalic acid; or a colloid, e.g. gelatine, starch, dextrin or gum arabic may also be present in the electrolyte. The temperature of the bath may lie in the range -4 DEG to 60 DEG C.
GB2369563A 1963-06-13 1963-06-13 Improvements in anodising aluminium and its alloys Expired GB1070782A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2369563A GB1070782A (en) 1963-06-13 1963-06-13 Improvements in anodising aluminium and its alloys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2369563A GB1070782A (en) 1963-06-13 1963-06-13 Improvements in anodising aluminium and its alloys

Publications (1)

Publication Number Publication Date
GB1070782A true GB1070782A (en) 1967-06-01

Family

ID=10199770

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2369563A Expired GB1070782A (en) 1963-06-13 1963-06-13 Improvements in anodising aluminium and its alloys

Country Status (1)

Country Link
GB (1) GB1070782A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0324325A1 (en) * 1988-01-15 1989-07-19 International Business Machines Corporation Anodic coatings on aluminum for circuit packaging
WO2008052517A1 (en) * 2006-11-02 2008-05-08 Steinert Elektromagnetbau Gmbh Anodic oxide layer for electrical conductors, in particular conductors composed of aluminium, method for producing an anodic oxide layer, and electrical conductor with anodic oxide layer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0324325A1 (en) * 1988-01-15 1989-07-19 International Business Machines Corporation Anodic coatings on aluminum for circuit packaging
WO2008052517A1 (en) * 2006-11-02 2008-05-08 Steinert Elektromagnetbau Gmbh Anodic oxide layer for electrical conductors, in particular conductors composed of aluminium, method for producing an anodic oxide layer, and electrical conductor with anodic oxide layer

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