GB1368747A - Electrodeposition of chromium - Google Patents

Electrodeposition of chromium

Info

Publication number
GB1368747A
GB1368747A GB6035770A GB6035770A GB1368747A GB 1368747 A GB1368747 A GB 1368747A GB 6035770 A GB6035770 A GB 6035770A GB 6035770 A GB6035770 A GB 6035770A GB 1368747 A GB1368747 A GB 1368747A
Authority
GB
United Kingdom
Prior art keywords
formamide
solution
acetamide
electro
ions
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
GB6035770A
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.)
British Non Ferrous Metals Research Association
Original Assignee
British Non Ferrous Metals Research Association
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 British Non Ferrous Metals Research Association filed Critical British Non Ferrous Metals Research Association
Priority to GB6035770A priority Critical patent/GB1368747A/en
Publication of GB1368747A publication Critical patent/GB1368747A/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
    • C25D3/06—Electroplating: Baths therefor from solutions of chromium from solutions of trivalent 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 And Plating Baths Therefor (AREA)

Abstract

1368747 Electro-depositing chromium-iron BRITISH NON-FERROUS METALS RESEARCH ASSOCIATION 23 Nov 1971 [18 Dec 1970] 60357/70 Addition to 1144913 Heading C7B Cr-Fe co-deposit or alloy is electro-deposited from a solution of trivalent Cr, Fe and halide ions in a homogeneous mixture of water and a dipolar organic compound containing a highly electronegative oxygen atom activated by an adjacent electron-donating atom or group; examples of such compounds are dimethyl sulphoxide, tetrahydrothiophen dioxide (sulpholane), formamide, acetamide, N-methyl formamide, dimethylformamide or - acetamide, tetramethylurea and tertiary butyl formamide. Preferably the solution also contains ammonium ion e.g. NH 4 Cl, boric acid, concentrated dialkyl (e.g. C5-7) phthalate, and surfactant e.g. cetyl trimethylammonium bromide; the Cr and Fe ions are preferably added as CrCl 3 , 6H 2 O and FeCl 2 , 4H 2 O with NaCl or CaCl 2 to increase halide ion concentration. To avoid chlorine evolution the anode may be immersed in an anolyte separated from the plating solution by a porous diaphragm. Specification 1368748 is referred to.
GB6035770A 1971-11-23 1971-11-23 Electrodeposition of chromium Expired GB1368747A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB6035770A GB1368747A (en) 1971-11-23 1971-11-23 Electrodeposition of chromium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6035770A GB1368747A (en) 1971-11-23 1971-11-23 Electrodeposition of chromium

Publications (1)

Publication Number Publication Date
GB1368747A true GB1368747A (en) 1974-10-02

Family

ID=10485482

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6035770A Expired GB1368747A (en) 1971-11-23 1971-11-23 Electrodeposition of chromium

Country Status (1)

Country Link
GB (1) GB1368747A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163779A (en) * 1984-08-27 1986-03-05 Nippon Kokan Kk Cr-alloy plating bath
WO2012059473A1 (en) * 2010-11-04 2012-05-10 Technische Universität Wien Method for depositing hard chromium from cr(vi)-free electrolytes
CN113818053A (en) * 2014-01-24 2021-12-21 科文特亚共同股份公司 Trivalent chromium-containing electroplating bath solution and method for depositing chromium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163779A (en) * 1984-08-27 1986-03-05 Nippon Kokan Kk Cr-alloy plating bath
WO2012059473A1 (en) * 2010-11-04 2012-05-10 Technische Universität Wien Method for depositing hard chromium from cr(vi)-free electrolytes
CN113818053A (en) * 2014-01-24 2021-12-21 科文特亚共同股份公司 Trivalent chromium-containing electroplating bath solution and method for depositing chromium

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee