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GB299395A - Improvements in or relating to processes for the electrolytical deposition of chromium - Google Patents

Improvements in or relating to processes for the electrolytical deposition of chromium

Info

Publication number
GB299395A
GB299395A GB30789/28A GB3078928A GB299395A GB 299395 A GB299395 A GB 299395A GB 30789/28 A GB30789/28 A GB 30789/28A GB 3078928 A GB3078928 A GB 3078928A GB 299395 A GB299395 A GB 299395A
Authority
GB
United Kingdom
Prior art keywords
gms
chromium
lithium
sulphate
relating
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
GB30789/28A
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 GB299395A publication Critical patent/GB299395A/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)
  • Fuel Cell (AREA)
  • Secondary Cells (AREA)

Abstract

299,395. Poetzsch, W. G., (Assignee of Lauterbach, F.). Oct. 25, 1927, [Convention date]. Chromium, depositing.-A small quantity of a lithium compound is added to an electrolyte consisting of, or rich in, chromic acid in order to improve the throwing power. A suitable bath contains 450 gms. chromic acid, 5 gms. chromium sulphate, and 3 gms. of lithium carbonate, hydroxide, or sulphate. The content of lithium may be increased to 50 gms. without disadvantage; when 50 gms. of lithium sulphate are added the chromium sulphate should be omitted. Lithium is not deposited. The current density may be 4-20 amps per sq. dcm. and the temperature 28-40‹ C. Specification 1344/08 is referred to.
GB30789/28A 1927-10-25 1928-10-24 Improvements in or relating to processes for the electrolytical deposition of chromium Expired GB299395A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE299395X 1927-10-25

Publications (1)

Publication Number Publication Date
GB299395A true GB299395A (en) 1930-01-24

Family

ID=6091247

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30789/28A Expired GB299395A (en) 1927-10-25 1928-10-24 Improvements in or relating to processes for the electrolytical deposition of chromium

Country Status (1)

Country Link
GB (1) GB299395A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3108933A (en) * 1961-02-28 1963-10-29 M & T Chemicals Inc Process and composition for chromium plating

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3108933A (en) * 1961-02-28 1963-10-29 M & T Chemicals Inc Process and composition for chromium plating

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