GB655737A - Improvements in and relating to the surface treatment of aluminium or aluminium basealloys - Google Patents

Improvements in and relating to the surface treatment of aluminium or aluminium basealloys

Info

Publication number
GB655737A
GB655737A GB2372648A GB2372648A GB655737A GB 655737 A GB655737 A GB 655737A GB 2372648 A GB2372648 A GB 2372648A GB 2372648 A GB2372648 A GB 2372648A GB 655737 A GB655737 A GB 655737A
Authority
GB
United Kingdom
Prior art keywords
aluminium
hydrogen peroxide
electroplated
nitric acid
per cent
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
GB2372648A
Inventor
Eric Henry Laister
Samuel Cecil Boyle
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.)
Johnson Matthey PLC
Original Assignee
Johnson Matthey PLC
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 Johnson Matthey PLC filed Critical Johnson Matthey PLC
Priority to GB2372648A priority Critical patent/GB655737A/en
Publication of GB655737A publication Critical patent/GB655737A/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
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/12—Light metals
    • C23G1/125—Light metals aluminium

Landscapes

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

Abstract

The surface of aluminium or an aluminium base alloy is treated to render it receptive to the electrodeposition thereon of another metal, by immersing it in a solution consisting of at least 50 per cent by weight of nitric acid and the remainder hydrogen peroxide, or a substance yielding hydrogen peroxide, such as sodium perborate, and water. The hydrogen peroxide content may be 5 per cent. An aluminium article may first be degreased in trichlorethylene, cleaned in sodium triphosphate as many times as necessary to remove surface irregularities, and immersed in the nitric acid-hydrogen peroxide solution at room temperature. It may then be coated with zinc in an alkaline plating bath, electroplated with copper and then electroplated with silver; finally, if desired, rhodium may be electrodeposited thereon.
GB2372648A 1948-09-09 1948-09-09 Improvements in and relating to the surface treatment of aluminium or aluminium basealloys Expired GB655737A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2372648A GB655737A (en) 1948-09-09 1948-09-09 Improvements in and relating to the surface treatment of aluminium or aluminium basealloys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2372648A GB655737A (en) 1948-09-09 1948-09-09 Improvements in and relating to the surface treatment of aluminium or aluminium basealloys

Publications (1)

Publication Number Publication Date
GB655737A true GB655737A (en) 1951-08-01

Family

ID=10200284

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2372648A Expired GB655737A (en) 1948-09-09 1948-09-09 Improvements in and relating to the surface treatment of aluminium or aluminium basealloys

Country Status (1)

Country Link
GB (1) GB655737A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2995814A (en) * 1957-10-11 1961-08-15 Harold A Chamness Method for soldering aluminum
GB2200136A (en) * 1987-01-12 1988-07-27 Nihon Parkerizing Cleaning of aluminium surfaces
WO2006122852A1 (en) * 2005-05-19 2006-11-23 Hydro Aluminium Deutschland Gmbh Conditioning of a litho strip

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2995814A (en) * 1957-10-11 1961-08-15 Harold A Chamness Method for soldering aluminum
GB2200136A (en) * 1987-01-12 1988-07-27 Nihon Parkerizing Cleaning of aluminium surfaces
GB2200136B (en) * 1987-01-12 1991-05-22 Nihon Parkerizing Cleaning of aluminium surfaces
WO2006122852A1 (en) * 2005-05-19 2006-11-23 Hydro Aluminium Deutschland Gmbh Conditioning of a litho strip
EP2460909A1 (en) * 2005-05-19 2012-06-06 Hydro Aluminium Deutschland GmbH Conditioning of a litho strip
US8211622B2 (en) 2005-05-19 2012-07-03 Hydro Aluminium Deutschland Gmbh Conditioning of a litho strip
US8632955B2 (en) 2005-05-19 2014-01-21 Hydro Aluminium Deutschland Gmbh Conditioning a surface of an aluminium strip

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