GB1104124A - Electro-electroless plating method - Google Patents

Electro-electroless plating method

Info

Publication number
GB1104124A
GB1104124A GB5588566A GB5588566A GB1104124A GB 1104124 A GB1104124 A GB 1104124A GB 5588566 A GB5588566 A GB 5588566A GB 5588566 A GB5588566 A GB 5588566A GB 1104124 A GB1104124 A GB 1104124A
Authority
GB
United Kingdom
Prior art keywords
nickel
cathode
hypophosphite
electrolyte
current
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
GB5588566A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB5588566A priority Critical patent/GB1104124A/en
Publication of GB1104124A publication Critical patent/GB1104124A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/1601Process or apparatus
    • C23C18/1633Process of electroless plating
    • C23C18/1655Process features
    • C23C18/1664Process features with additional means during the plating process
    • C23C18/1671Electric field
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/31Coating with metals
    • C23C18/32Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
    • C23C18/34Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents
    • C23C18/36Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents using hypophosphites
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00Electroplating: Baths therefor
    • C25D3/02Electroplating: Baths therefor from solutions
    • C25D3/12Electroplating: Baths therefor from solutions of nickel or cobalt

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Chemically Coating (AREA)

Abstract

<PICT:1104124/C6-C7/1> A coating of bright nickel is deposited on a metal surface by immersing said surface as cathode in an electrolyte comprising an aqueous solution containing at least one of nickel sulphate, nickel chloride, nickel ammonium sulphate, nickel citrate and nickel acetate; sodium citrate; and at least one of sodium hypophosphite, ammonium hypophosphite, potassium hypophosphite, calcium hypophosphite and barium hypophosphite, said nickel salt, sodium citrate and hypophosphate being present approximately in the proportions 2:2:1 by weight, and using a cathode current density of 0.7-3.0 Amps/sq. ft. Either direct or alternating current or interrupted direct current may be used. Using direct current the anode preferably has a surface area of about one tenth that of the workpiece forming the cathode, in order to provide sufficient current density at the anode to prevent electroless deposition of nickel thereupon. Using A.C. current both electrodes are formed by workpieces. Apparatus suitable for carrying out the invention comprises an electroplating tank 10 in which workpieces 14 and, if D.C. current is used, nickel anodes 16 are suspended, and from which the electrolyte 12 flows under gravity via pipe 34 to an auxiliary tank 30 in which the electrolyte is replenished by electrolytic dissolution of nickel therein using a nickel anode 36 and copper cathode 40, the cathode being immersed in a 10% solution of sulphuric or hydrochloric acid in a porous pot 42. The replenished electrolyte is returned to electro-plating tank 10 via pump 46 and filter 44.
GB5588566A 1966-12-13 1966-12-13 Electro-electroless plating method Expired GB1104124A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5588566A GB1104124A (en) 1966-12-13 1966-12-13 Electro-electroless plating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5588566A GB1104124A (en) 1966-12-13 1966-12-13 Electro-electroless plating method

Publications (1)

Publication Number Publication Date
GB1104124A true GB1104124A (en) 1968-02-21

Family

ID=10475119

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5588566A Expired GB1104124A (en) 1966-12-13 1966-12-13 Electro-electroless plating method

Country Status (1)

Country Link
GB (1) GB1104124A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101967672A (en) * 2010-07-06 2011-02-09 无锡出新环保设备有限公司 Plating tank liquid medicine filtering system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101967672A (en) * 2010-07-06 2011-02-09 无锡出新环保设备有限公司 Plating tank liquid medicine filtering system

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