GB296988A - Process for producing electrolytic deposits of chromium which adhere well and penetrate well into any recesses - Google Patents

Process for producing electrolytic deposits of chromium which adhere well and penetrate well into any recesses

Info

Publication number
GB296988A
GB296988A GB25580/28A GB2558028A GB296988A GB 296988 A GB296988 A GB 296988A GB 25580/28 A GB25580/28 A GB 25580/28A GB 2558028 A GB2558028 A GB 2558028A GB 296988 A GB296988 A GB 296988A
Authority
GB
United Kingdom
Prior art keywords
gms
chromium
well
aluminium
recesses
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
GB25580/28A
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.)
WILHELM GEORG POETZSCH
Original Assignee
WILHELM GEORG POETZSCH
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 WILHELM GEORG POETZSCH filed Critical WILHELM GEORG POETZSCH
Publication of GB296988A publication Critical patent/GB296988A/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
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/04—Electroplating: Baths therefor from solutions of chromium

Landscapes

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

Abstract

296.988. Poetzsch W. G., (Assignee of Lauterbach, F.). Sept. 10, 1927, [Convention date]. Chromium, depositing.- The electrolyte consists of chromic acid to which is added 1-4 gms. per litre of a salt of aluminium or magnesium or of magnesium oxide; the total free and combined sulphuric acid must not exceed 1.5 per cent of the chromic anhydride present, and should preferably be about 0.6-0.7 per cent. The current density must be between 3 and 10 amps per sq. dcm. The aluminium or magnesium is not deposited. In an example, the bath contains per litre 450 gms. of chromic acid, 5 gms. of chromium sulphate of an equivalent amount of sulphuric acid and 3.5 gms. of magnesium oxide or carbonate or 7 gms. of aluminium carbonate. Specification 266,045 is referred to.
GB25580/28A 1927-09-10 1928-09-06 Process for producing electrolytic deposits of chromium which adhere well and penetrate well into any recesses Expired GB296988A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE296988X 1927-09-10

Publications (1)

Publication Number Publication Date
GB296988A true GB296988A (en) 1929-12-06

Family

ID=6090532

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25580/28A Expired GB296988A (en) 1927-09-10 1928-09-06 Process for producing electrolytic deposits of chromium which adhere well and penetrate well into any recesses

Country Status (1)

Country Link
GB (1) GB296988A (en)

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