FR2006961A1 - Electrolytic deposition of magnetisable coatings - Google Patents

Electrolytic deposition of magnetisable coatings

Info

Publication number
FR2006961A1
FR2006961A1 FR6907022A FR6907022A FR2006961A1 FR 2006961 A1 FR2006961 A1 FR 2006961A1 FR 6907022 A FR6907022 A FR 6907022A FR 6907022 A FR6907022 A FR 6907022A FR 2006961 A1 FR2006961 A1 FR 2006961A1
Authority
FR
France
Prior art keywords
litre
ions
gms
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.)
Withdrawn
Application number
FR6907022A
Other languages
French (fr)
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.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert AG
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 Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of FR2006961A1 publication Critical patent/FR2006961A1/en
Withdrawn legal-status Critical Current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
    • C25D3/56—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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F10/00—Thin magnetic films, e.g. of one-domain structure
    • H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
    • H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Power Engineering (AREA)
  • Electroplating And Plating Baths Therefor (AREA)

Abstract

The magnetisable alloys to be deposited are cobalt nickel compositions. Solutions containing more than 100 gm./litre of cobalt ions and nickel ions (60-40 or 40-60) and containing 6 to 12 gms./litre of hypophosphite ions H2PO2- and 60- 140 gms./litre of ammonium ions NH4+ are used at a pH of 1.8 to 5.5 and at 40 to 80 80 degrees C. and a current density of 9-100 amps./dm2. Preferred conditions are 120-140 gms/litre cobalt and nickel 47-53 degrees C. and pH 3.4-3.6. Alloys deposited for preference are 78-82% Co and 18-22% Ni. High current densities and ion concentrations can be used.
FR6907022A 1968-04-26 1969-03-12 Electrolytic deposition of magnetisable coatings Withdrawn FR2006961A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681771260 DE1771260A1 (en) 1968-04-26 1968-04-26 Process for the galvanic deposition of ferromagnetic coatings made of cobalt-nickel alloys

Publications (1)

Publication Number Publication Date
FR2006961A1 true FR2006961A1 (en) 1970-01-02

Family

ID=5700804

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6907022A Withdrawn FR2006961A1 (en) 1968-04-26 1969-03-12 Electrolytic deposition of magnetisable coatings

Country Status (3)

Country Link
BE (1) BE731985A (en)
DE (1) DE1771260A1 (en)
FR (1) FR2006961A1 (en)

Also Published As

Publication number Publication date
DE1771260A1 (en) 1971-11-25
BE731985A (en) 1969-10-24

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Legal Events

Date Code Title Description
ST Notification of lapse