GB1323826A - Process for electroplating with ni-fe alloy - Google Patents

Process for electroplating with ni-fe alloy

Info

Publication number
GB1323826A
GB1323826A GB2131371A GB2131371A GB1323826A GB 1323826 A GB1323826 A GB 1323826A GB 2131371 A GB2131371 A GB 2131371A GB 2131371 A GB2131371 A GB 2131371A GB 1323826 A GB1323826 A GB 1323826A
Authority
GB
United Kingdom
Prior art keywords
electro
wire
treatment device
plated
plating
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
GB2131371A
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of GB1323826A publication Critical patent/GB1323826A/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
    • C25D3/56—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
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/14—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates
    • H01F41/24—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates from liquids
    • H01F41/26—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates from liquids using electric currents, e.g. electroplating

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (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)
  • Thin Magnetic Films (AREA)

Abstract

1323826 Electro-plating with nickel-iron alloy HITACHI Ltd 19 April 1971 [6 Feb 1970] 21313/71 Heading C7B An Fe-Ni permalloy film, e.g. 80% Ni-20% Fe for a memory element and having uniform composition throughout its thickness and zero magnetostriction co-efficient, is electro-plated, e.g. on to a Ag or Au wire, from an acidic electrolyte containing ferrous and nickel salts, e.g. sulphate, chloride or sulphamate, in which the Ni concentration is 0À02 to 0À15 mol/l and the weight ratio of Ni: Fe is 4 to 20:1, using a constant D.C. density greater than 5A/dm<SP>2</SP>. The wire 3 may be continuously passed in succession through a pre-treatment device 6, a rotating cylindrical agitator 4 in the electro-plating bath 1 between rinsing devices 8, 8' and a heat-treatment device 9 e.g. an electric ageing furnace, whilst actuating power source 15 to provide D.C. in the bath and A.C. in the wire. The electro-plated wire 12 has an axis of easy magnetization in the peripheral direction.
GB2131371A 1970-02-06 1971-04-19 Process for electroplating with ni-fe alloy Expired GB1323826A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP992970A JPS4923746B1 (en) 1970-02-06 1970-02-06

Publications (1)

Publication Number Publication Date
GB1323826A true GB1323826A (en) 1973-07-18

Family

ID=11733745

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2131371A Expired GB1323826A (en) 1970-02-06 1971-04-19 Process for electroplating with ni-fe alloy

Country Status (4)

Country Link
JP (1) JPS4923746B1 (en)
DE (1) DE2105529A1 (en)
GB (1) GB1323826A (en)
NL (1) NL7101616A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4279707A (en) 1978-12-18 1981-07-21 International Business Machines Corporation Electroplating of nickel-iron alloys for uniformity of nickel/iron ratio using a low density plating current

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA77361B (en) * 1976-02-04 1978-03-29 M & T Chemicals Inc Protective alloy electrodeposits on ferrous surfaces
JPS5582793A (en) * 1978-12-18 1980-06-21 Ibm Nickelliron plating method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4279707A (en) 1978-12-18 1981-07-21 International Business Machines Corporation Electroplating of nickel-iron alloys for uniformity of nickel/iron ratio using a low density plating current

Also Published As

Publication number Publication date
NL7101616A (en) 1971-08-10
DE2105529A1 (en) 1971-09-16
JPS4923746B1 (en) 1974-06-18

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees