GB1087613A - Improvements in or relating to the electrodeposition of chromium - Google Patents

Improvements in or relating to the electrodeposition of chromium

Info

Publication number
GB1087613A
GB1087613A GB3686863A GB3686863A GB1087613A GB 1087613 A GB1087613 A GB 1087613A GB 3686863 A GB3686863 A GB 3686863A GB 3686863 A GB3686863 A GB 3686863A GB 1087613 A GB1087613 A GB 1087613A
Authority
GB
United Kingdom
Prior art keywords
sif6
cro3
h2so4
electrodeposition
chromium
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
GB3686863A
Inventor
Edward Ernest Bishop
Desmond Povey
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.)
ArvinMeritor Light Vehicle Systems UK Ltd
Original Assignee
Wilmot Breeden Ltd
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 Wilmot Breeden Ltd filed Critical Wilmot Breeden Ltd
Priority to GB3686863A priority Critical patent/GB1087613A/en
Priority to DE1964W0037563 priority patent/DE1272676B/en
Priority to FR988705A priority patent/FR1408513A/en
Publication of GB1087613A publication Critical patent/GB1087613A/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)
  • Electroplating Methods And Accessories (AREA)

Abstract

A micro-cracked chromium layer is electro-deposited on an object, e.g. on a nickel electroplated layer applied over a copper flash to a steel body, in a single stage from a plating bath containing 225-275 g/l CrO3, 3.5-6 g/l SiF6 ion e.g. Na2 SiF6 and H2SO4 in a concentration such that the weight ratio of CrO3 to H2SO4 is 130-250; the current density is 100-300 A.S.F. and the bath temperature is 100-130 DEG F. The electrolyte may contain trivalent Cr.
GB3686863A 1963-09-19 1963-09-19 Improvements in or relating to the electrodeposition of chromium Expired GB1087613A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB3686863A GB1087613A (en) 1963-09-19 1963-09-19 Improvements in or relating to the electrodeposition of chromium
DE1964W0037563 DE1272676B (en) 1963-09-19 1964-09-18 Galvanic deposition of a micro-cracked chrome coating on copper-plated or nickel-plated objects
FR988705A FR1408513A (en) 1963-09-19 1964-09-19 Improvements to chromium deposits by electrolysis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3686863A GB1087613A (en) 1963-09-19 1963-09-19 Improvements in or relating to the electrodeposition of chromium

Publications (1)

Publication Number Publication Date
GB1087613A true GB1087613A (en) 1967-10-18

Family

ID=10391824

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3686863A Expired GB1087613A (en) 1963-09-19 1963-09-19 Improvements in or relating to the electrodeposition of chromium

Country Status (2)

Country Link
DE (1) DE1272676B (en)
GB (1) GB1087613A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1255874A (en) * 1959-05-28 1961-03-10 Metal & Thermit Corp Electrolytic chrome plating process

Also Published As

Publication number Publication date
DE1272676B (en) 1968-07-11

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