GB451904A - Method of electro-plating aluminium with metal - Google Patents

Method of electro-plating aluminium with metal

Info

Publication number
GB451904A
GB451904A GB35524/35A GB3552435A GB451904A GB 451904 A GB451904 A GB 451904A GB 35524/35 A GB35524/35 A GB 35524/35A GB 3552435 A GB3552435 A GB 3552435A GB 451904 A GB451904 A GB 451904A
Authority
GB
United Kingdom
Prior art keywords
treatment
pores
effected
aluminium
electro
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
GB35524/35A
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.)
Vereinigte Aluminium Werke AG
Original Assignee
Vereinigte Aluminium Werke AG
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 Vereinigte Aluminium Werke AG filed Critical Vereinigte Aluminium Werke AG
Publication of GB451904A publication Critical patent/GB451904A/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
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/34—Pretreatment of metallic surfaces to be electroplated
    • C25D5/42—Pretreatment of metallic surfaces to be electroplated of light metals
    • C25D5/44—Aluminium
    • 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
    • C25D11/16—Pretreatment, e.g. desmutting
    • 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
    • C25D11/24—Chemical after-treatment
    • C25D11/246—Chemical after-treatment for sealing layers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

Aluminium or an aluminium alloy is prepared for plating in a known manner and a film of the desired metal not more than 0,01 m.m. in thickness is deposited; it is then subjected to treatment whereby the pores in the deposit are sealed, and the electroplating is then continued. The treatment may be effected by chemical oxidation in a bath containing sodium carbonate and potassium chromate. Sealing may also be effected by boiling in distilled water or dipping in a hot solution of nickel acetate or cobalt acetate containing a small amount of boric acid. Alternatively the pores may be filled with insoluble material, e.g. with silica by immersing first in sodium silicate solution and then in acid. The latter methods may also be applied after an oxidation treatment.
GB35524/35A 1934-12-24 1935-12-23 Method of electro-plating aluminium with metal Expired GB451904A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE451904X 1934-12-24

Publications (1)

Publication Number Publication Date
GB451904A true GB451904A (en) 1936-08-13

Family

ID=6538571

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35524/35A Expired GB451904A (en) 1934-12-24 1935-12-23 Method of electro-plating aluminium with metal

Country Status (1)

Country Link
GB (1) GB451904A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2430468A (en) * 1943-11-08 1947-11-11 Bell Telephone Labor Inc Electroplating silver on aluminum and its alloys
US3493474A (en) * 1966-04-29 1970-02-03 Gen Motors Corp Aluminum plating process
US3526486A (en) * 1967-02-21 1970-09-01 Nat Steel Corp Corrosion resistant ferrous metal articles and method of preparing the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2430468A (en) * 1943-11-08 1947-11-11 Bell Telephone Labor Inc Electroplating silver on aluminum and its alloys
US3493474A (en) * 1966-04-29 1970-02-03 Gen Motors Corp Aluminum plating process
US3526486A (en) * 1967-02-21 1970-09-01 Nat Steel Corp Corrosion resistant ferrous metal articles and method of preparing the same

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