GB283288A - Improvements in the electro-deposition of metals - Google Patents

Improvements in the electro-deposition of metals

Info

Publication number
GB283288A
GB283288A GB2514326A GB2514326A GB283288A GB 283288 A GB283288 A GB 283288A GB 2514326 A GB2514326 A GB 2514326A GB 2514326 A GB2514326 A GB 2514326A GB 283288 A GB283288 A GB 283288A
Authority
GB
United Kingdom
Prior art keywords
bath
nickel
plating
deposited
treatment
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
GB2514326A
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.)
STAFFORD O BRIEN AND PARTNERS
Original Assignee
STAFFORD O BRIEN AND PARTNERS
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 STAFFORD O BRIEN AND PARTNERS filed Critical STAFFORD O BRIEN AND PARTNERS
Priority to GB2514326A priority Critical patent/GB283288A/en
Publication of GB283288A publication Critical patent/GB283288A/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

Landscapes

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

Abstract

283,288. Webb, H., and O'Brien & Partners, Ltd., S. Oct. 9, 1926. Metals, depositing; preparing and treating surfaces; treating after deposition.-A process for electrodeposition of metals on aluminium. or aluminium alloy consists in treating with strong nitric acid prior to treatment in the electrolytic bath and without any preliminary treatment other than treating with boiling caustic alkali for cleansing and removing grease, and subjecting to heat at a temperature considerably above boiling- point after the plating operation. The electrolytic bath consists of an acid salt of the metal to be deposited; when a salt other than a nitrate is employed the article, after treatment with nitric acid, is dipped into a bath of acid corresponding with the electrolyte. Nickel, zinc, and copper may be deposited directly on aluminium or its alloys from baths of a solution of the sulphate acidulated with sulphuric acid, the article being dipped in dilute sulphuric acid after treatment with strong nitric acid and before immersion in the plating bath. After removal from this bath the article is dried by embedding in sawdust and the heat treatment carried out by immersing in a sand bath in an oven and raising the temperature to 350‹-360‹ F. When a coating of silver is required, copper or other metal is frst deposited by the method described above, and a coating of silver is then deposited by any known method. Gold, silver, tin, lead, and cadmium may similarly be plated from a cyanide bath by known processes on a coating of copper deposited by the method described above. In the case of nickel plating on aluminium articles having rough cast surfaces, the articles are plated with copper by the above-described process, and subsequently plated with nickel. Alternatively the heat treatment may be given after the final plating with nickel instead of after the first plating, or in addition to the latter. For nickel plating an anode of cast nickel having one and a half times the surface area of the cathode may be employed.
GB2514326A 1926-10-09 1926-10-09 Improvements in the electro-deposition of metals Expired GB283288A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2514326A GB283288A (en) 1926-10-09 1926-10-09 Improvements in the electro-deposition of metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2514326A GB283288A (en) 1926-10-09 1926-10-09 Improvements in the electro-deposition of metals

Publications (1)

Publication Number Publication Date
GB283288A true GB283288A (en) 1928-01-09

Family

ID=10222909

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2514326A Expired GB283288A (en) 1926-10-09 1926-10-09 Improvements in the electro-deposition of metals

Country Status (1)

Country Link
GB (1) GB283288A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2746136A (en) * 1951-08-01 1956-05-22 Pechiney Prod Chimiques Sa Treatment of aluminum and its alloys prior to electro-plating with lead
US2816066A (en) * 1956-05-14 1957-12-10 Western Electric Co Methods of plating articles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2746136A (en) * 1951-08-01 1956-05-22 Pechiney Prod Chimiques Sa Treatment of aluminum and its alloys prior to electro-plating with lead
US2816066A (en) * 1956-05-14 1957-12-10 Western Electric Co Methods of plating articles

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