GB1368748A - Electrodeposition of chromium - Google Patents

Electrodeposition of chromium

Info

Publication number
GB1368748A
GB1368748A GB448471A GB448471A GB1368748A GB 1368748 A GB1368748 A GB 1368748A GB 448471 A GB448471 A GB 448471A GB 448471 A GB448471 A GB 448471A GB 1368748 A GB1368748 A GB 1368748A
Authority
GB
United Kingdom
Prior art keywords
solution
metal
chromium
feb
electro
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
GB448471A
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 GB448471A priority Critical patent/GB1368748A/en
Publication of GB1368748A publication Critical patent/GB1368748A/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

1368748 Electro-depositing chromium metal or alloy BRITISH NON-FERROUS METAL RESEARCH ASSOCIATION 8 Feb 1972 [11 Feb 1971] 4484/71 Heading C7B Chromium is electro-deposited from a solution of trivalent chromium, ammonium and halide ions, e.g. added as CrCl 3 and NH 4 Cl, in a Ni-free homogeneous liquid mixture of water and a dipolar organic compound containing a highly electronegative oxygen atom (i.e. activated by an adjacent electron-donating atom or group) e.g. dimethylformamide, the proportion by volume of water to dipolar organic compound being greater than 60:40 but not greater than 95:5. Preferably the halide ion concentration is increased to more than 5 molar e.g. by adding CaCl 2 , AlCl 3 or NaCl. The solution may also contain boric acid and one or more brighteners, such as aliphatic or aromatic (substituted) aldehyde e.g. salicylaldehyde, or levellers, such as coumarin or aliphatic alcohol e.g. ethanol. A cationic surfactant may also be added as in Specification 1368749. The anode may be of graphite with the solution agitated in its vicinity by air or mechanical means. Another metal may be incorporated in the solution to obtain a bi-metal co-deposit or alloy. Specifications 1368747 and 1213556 are referred to.
GB448471A 1972-02-08 1972-02-08 Electrodeposition of chromium Expired GB1368748A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB448471A GB1368748A (en) 1972-02-08 1972-02-08 Electrodeposition of chromium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB448471A GB1368748A (en) 1972-02-08 1972-02-08 Electrodeposition of chromium

Publications (1)

Publication Number Publication Date
GB1368748A true GB1368748A (en) 1974-10-02

Family

ID=9778051

Family Applications (1)

Application Number Title Priority Date Filing Date
GB448471A Expired GB1368748A (en) 1972-02-08 1972-02-08 Electrodeposition of chromium

Country Status (1)

Country Link
GB (1) GB1368748A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103014792A (en) * 2012-12-13 2013-04-03 合肥华清方兴表面技术有限公司 Tin-cobalt alloy decorative chromium-substituted electroplate liquid and electroplate method thereof
CN103014784A (en) * 2012-12-13 2013-04-03 合肥华清方兴表面技术有限公司 Constant-temperature environment-friendly trivalent chromium electroplating liquid and electroplating method thereof
CN109652827A (en) * 2019-01-16 2019-04-19 陈建平 A kind of trivalent chromium sulfate plating solution and its manufacture craft and electroplating technology

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103014792A (en) * 2012-12-13 2013-04-03 合肥华清方兴表面技术有限公司 Tin-cobalt alloy decorative chromium-substituted electroplate liquid and electroplate method thereof
CN103014784A (en) * 2012-12-13 2013-04-03 合肥华清方兴表面技术有限公司 Constant-temperature environment-friendly trivalent chromium electroplating liquid and electroplating method thereof
CN103014792B (en) * 2012-12-13 2016-03-30 合肥华清方兴表面技术有限公司 A kind of ornamental chromium replacement electroplating liquid of tin-cobalt alloy and electro-plating method thereof
CN109652827A (en) * 2019-01-16 2019-04-19 陈建平 A kind of trivalent chromium sulfate plating solution and its manufacture craft and electroplating technology

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Legal Events

Date Code Title Description
PS Patent sealed
426 Order made revoking patent and granting patent of addition in lieu thereof (sect. 26(2)/1949)
PCNP Patent ceased through non-payment of renewal fee