GB476720A - Improvements in or relating to the chromium plating of aluminium and aluminium alloys - Google Patents

Improvements in or relating to the chromium plating of aluminium and aluminium alloys

Info

Publication number
GB476720A
GB476720A GB9327/37A GB932737A GB476720A GB 476720 A GB476720 A GB 476720A GB 9327/37 A GB9327/37 A GB 9327/37A GB 932737 A GB932737 A GB 932737A GB 476720 A GB476720 A GB 476720A
Authority
GB
United Kingdom
Prior art keywords
aluminium
relating
nickel
chromium plating
alloys
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
GB9327/37A
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.)
FINCKH GmbH
Original Assignee
FINCKH GmbH
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 FINCKH GmbH filed Critical FINCKH GmbH
Publication of GB476720A publication Critical patent/GB476720A/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
    • C25D5/10—Electroplating with more than one layer of the same or of different metals
    • C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
    • C25D5/14—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium two or more layers being of nickel or chromium, e.g. duplex or triplex layers

Landscapes

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

Abstract

Aluminium or an aluminium alloy is coated with a thin layer of iron by immersion in a bath containing ferrous chloride hexahydrate and commercial, 35-38 per cent, hydrochloric acid, preferably in equal proportions, at a temperature above 80 DEG C., preferably 92-95 DEG C. It is then electroplated first with a thin layer of nickel, nickel-copper or other nickel alloy and then with a thicker layer of chromium. Specification 465,078 is referred to.
GB9327/37A 1936-04-07 1937-04-01 Improvements in or relating to the chromium plating of aluminium and aluminium alloys Expired GB476720A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE476720X 1936-04-07

Publications (1)

Publication Number Publication Date
GB476720A true GB476720A (en) 1937-12-14

Family

ID=6542032

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9327/37A Expired GB476720A (en) 1936-04-07 1937-04-01 Improvements in or relating to the chromium plating of aluminium and aluminium alloys

Country Status (2)

Country Link
FR (1) FR819595A (en)
GB (1) GB476720A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2702785A (en) * 1950-06-16 1955-02-22 Metallgesellschaft Ag Process of producing hard chromium platings on light metals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2702785A (en) * 1950-06-16 1955-02-22 Metallgesellschaft Ag Process of producing hard chromium platings on light metals

Also Published As

Publication number Publication date
FR819595A (en) 1937-10-21

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