GB1274104A - Anodic oxidation of aluminium - Google Patents

Anodic oxidation of aluminium

Info

Publication number
GB1274104A
GB1274104A GB40593/69D GB4059369D GB1274104A GB 1274104 A GB1274104 A GB 1274104A GB 40593/69 D GB40593/69 D GB 40593/69D GB 4059369 D GB4059369 D GB 4059369D GB 1274104 A GB1274104 A GB 1274104A
Authority
GB
United Kingdom
Prior art keywords
aluminium
anolyte
aug
diaphragm
oxalic
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
GB40593/69D
Inventor
Giancarlo Paolini
Ciro Micheletti
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.)
L ESERCIZIO DELL ISTITUTO SPER
Original Assignee
L ESERCIZIO DELL ISTITUTO SPER
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 L ESERCIZIO DELL ISTITUTO SPER filed Critical L ESERCIZIO DELL ISTITUTO SPER
Publication of GB1274104A publication Critical patent/GB1274104A/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
    • 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
    • C25D11/005—Apparatus specially adapted for electrolytic conversion coating
    • 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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/002—Cell separation, e.g. membranes, diaphragms

Abstract

1,274,104. Anodizing aluminium. SOC PER l'ESERCIZIO DELL ISTITUTO SPERIMENTALE DEI METALLI LEGGERI. Aug. 14, 1969 [Aug. 14, 1968], No.40593/69. Heading C7B. Coloured anodized coatings are formed on aluminium or aluminium alloys electrolytically in a cell divided by a diaphragm having pores of diameter from 0À1 to 50Á into an anodic compartment containing electrolyte capable of producing colouring and based on an aliphatic carboxylic acid and a cathode compartment. The diaphragm may be of polyethylene, glass or ceramic material. The anolyte may be of maleic, oxalic and/or tartaric acids with or without sulphuric acid. The catholyte may be similar to the anolyte and contain substances to prevent its reduction; or may be of alkali metal hydroxide or sulphate, or sulphuric or oxalic acids.
GB40593/69D 1968-08-14 1969-08-14 Anodic oxidation of aluminium Expired GB1274104A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2017768 1968-08-14

Publications (1)

Publication Number Publication Date
GB1274104A true GB1274104A (en) 1972-05-10

Family

ID=32894116

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40593/69D Expired GB1274104A (en) 1968-08-14 1969-08-14 Anodic oxidation of aluminium

Country Status (8)

Country Link
US (1) US3692644A (en)
BE (1) BE737466A (en)
CH (1) CH523332A (en)
DE (1) DE1941394A1 (en)
FR (1) FR2015658A1 (en)
GB (1) GB1274104A (en)
LU (1) LU59284A1 (en)
NL (1) NL6912194A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE754994A (en) * 1969-10-08 1971-02-01 Vaw Ver Aluminium Werke Ag COLORED ANODIZATION OF ALLOYS
US20080274375A1 (en) * 2007-05-04 2008-11-06 Duracouche International Limited Anodizing Aluminum and Alloys Thereof

Also Published As

Publication number Publication date
LU59284A1 (en) 1970-02-13
CH523332A (en) 1972-05-31
FR2015658A1 (en) 1970-04-30
NL6912194A (en) 1970-02-17
BE737466A (en) 1970-02-13
US3692644A (en) 1972-09-19
DE1941394A1 (en) 1970-07-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees