EP0456628A1 - Verfahren zum elektrolytischen Absetzen einer Metallschicht aus einer Nickel-Cobalt-Legierung auf einen Gegenstand - Google Patents

Verfahren zum elektrolytischen Absetzen einer Metallschicht aus einer Nickel-Cobalt-Legierung auf einen Gegenstand Download PDF

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Publication number
EP0456628A1
EP0456628A1 EP91870074A EP91870074A EP0456628A1 EP 0456628 A1 EP0456628 A1 EP 0456628A1 EP 91870074 A EP91870074 A EP 91870074A EP 91870074 A EP91870074 A EP 91870074A EP 0456628 A1 EP0456628 A1 EP 0456628A1
Authority
EP
European Patent Office
Prior art keywords
electrolyte solution
anode
process according
cobalt
nickel
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.)
Granted
Application number
EP91870074A
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English (en)
French (fr)
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EP0456628B1 (de
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.)
TI Group Automotive Systems Ltd
Original Assignee
TI Group Automotive Systems 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 TI Group Automotive Systems Ltd filed Critical TI Group Automotive Systems Ltd
Publication of EP0456628A1 publication Critical patent/EP0456628A1/de
Application granted granted Critical
Publication of EP0456628B1 publication Critical patent/EP0456628B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
    • 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
    • C25D3/56—Electroplating: Baths therefor from solutions of alloys
    • C25D3/562—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of iron or nickel or cobalt

Definitions

  • This SCHEER bath comprises 110 g/l nickel sulfate, 390 g/l cobalt sulfate, 25 g/l boric acid and, moreover, 7.5 mg/l potassium sulphocyanide.
  • the electrolysis is realized at a temperature comprised between 60 and 80°C and with a current density of 10 A/dm 2.
  • a process according to the invention is characterized in that the electrolysis is realized in the electrolyte solution to which sulfuric acid has been added, and in that the tension, which is applied between the cathode and the anode, which is a substantially insoluble anode, is of such a value that near said surface, a current density of at least 30 A/dm2 is realized. It has been found that by using a high current density in the bath described in the preamble, a simultaneous nickel-cobalt deposit of a good quality is obtained. By using a current density of at least 30 A/dm2, the deposition process goes on in a quicker and more efficient way.
  • the use of the process according to the invention allows to deposit a metallic coating of a superior quality on the strip-iron 8.
  • a chloride-free solution containing at least nickel sulfate, cobalt sulfate, boric acid and sulfuric acid and this in combination with a cathode current density of at least 30 A/dm2. Comparitive tests showed that due to this combination it is possible to realize after tempering high quality metallic deposits, by which are meant here a.o. uniform deposits having a fine grain structure.

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  • 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)
  • Electroplating Methods And Accessories (AREA)
  • Electrolytic Production Of Metals (AREA)
EP91870074A 1990-05-08 1991-05-07 Verfahren zum elektrolytischen Absetzen einer Metallschicht aus einer Nickel-Cobalt-Legierung auf einen Gegenstand Expired - Lifetime EP0456628B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9000486 1990-05-08
BE9000486A BE1004124A3 (fr) 1990-05-08 1990-05-08 Procede pour appliquer par electrolyse une couche d'un alliage nickel-cobalt sur un objet et solution d'electrolyte utilisee a cet effet.

Publications (2)

Publication Number Publication Date
EP0456628A1 true EP0456628A1 (de) 1991-11-13
EP0456628B1 EP0456628B1 (de) 1996-08-28

Family

ID=3884783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91870074A Expired - Lifetime EP0456628B1 (de) 1990-05-08 1991-05-07 Verfahren zum elektrolytischen Absetzen einer Metallschicht aus einer Nickel-Cobalt-Legierung auf einen Gegenstand

Country Status (7)

Country Link
EP (1) EP0456628B1 (de)
JP (1) JP3224401B2 (de)
KR (1) KR100229165B1 (de)
AT (1) ATE141961T1 (de)
BE (1) BE1004124A3 (de)
CA (1) CA2041870C (de)
DE (1) DE69121630T2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100793840B1 (ko) 2007-01-10 2008-01-10 김기형 코발트 혼합 전해도금액 및 이를 이용한 코발트 혼합도금액 코팅제품

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1580290A (de) * 1967-06-30 1969-09-05

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1580290A (de) * 1967-06-30 1969-09-05

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SURFACE AND COATING TECHNOLOGY, vol. 27, 1986, pages 103-115, Elsevier Sequoia, NL; A.M. ABD EL-HALIM et al.: "Some characteristics of Ni-Co alloy powders electrodeposited from dilute sulphate baths" *

Also Published As

Publication number Publication date
EP0456628B1 (de) 1996-08-28
KR920005739A (ko) 1992-04-03
KR100229165B1 (ko) 1999-11-01
JPH04228594A (ja) 1992-08-18
BE1004124A3 (fr) 1992-09-29
JP3224401B2 (ja) 2001-10-29
DE69121630T2 (de) 1997-02-06
DE69121630D1 (de) 1996-10-02
CA2041870A1 (en) 1991-11-09
CA2041870C (en) 2001-04-24
ATE141961T1 (de) 1996-09-15

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