GB702220A - Method of electroplating - Google Patents

Method of electroplating

Info

Publication number
GB702220A
GB702220A GB2554/51A GB255451A GB702220A GB 702220 A GB702220 A GB 702220A GB 2554/51 A GB2554/51 A GB 2554/51A GB 255451 A GB255451 A GB 255451A GB 702220 A GB702220 A GB 702220A
Authority
GB
United Kingdom
Prior art keywords
current
copper
per gallon
plating
ozs
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
GB2554/51A
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.)
Poor and Co
Original Assignee
Poor and Co
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 Poor and Co filed Critical Poor and Co
Publication of GB702220A publication Critical patent/GB702220A/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
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/18—Electroplating using modulated, pulsed or reversing current
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S204/00—Chemistry: electrical and wave energy
    • Y10S204/09—Wave forms

Landscapes

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

Abstract

702,220. Electrodeposition of copper. POOR & CO. Feb. 1, 1951 [July 17, 1950], No. 2554/51. Addition to 599,707. Drawings to Specification. Class 41 In a method of controlling the electrodepositicn of copper on an electrically-conducting object of a type in which the copper would normally be deposited in greater concentrations in some areas than in others by a direct plating current, the object is subjected to a plating current in an acid copper sulphate plating bath, the current having an asymmetric wave form and comprising an alternating current superposed on a direct current in the ration of 2 to 4 volts. R.M.S. to 2.5 volts direct current, at current densities from about 2 to about 15 amperes per sq. ft. The plating bath may be in the proportions of copper sulphate 24 ozs. per gallon, sulphuric acid 6 ozs. per gallon, and glue # oz. per gallon. The frequency of the alternating current may be within the limits of about 25 cycles to about 60 cycles. Specification 597,426 is.referred to.
GB2554/51A 1950-07-17 1951-02-01 Method of electroplating Expired GB702220A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US174243A US2651609A (en) 1950-07-17 1950-07-17 Method of electroplating copper

Publications (1)

Publication Number Publication Date
GB702220A true GB702220A (en) 1954-01-13

Family

ID=22635415

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2554/51A Expired GB702220A (en) 1950-07-17 1951-02-01 Method of electroplating

Country Status (2)

Country Link
US (1) US2651609A (en)
GB (1) GB702220A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3994785A (en) * 1975-01-09 1976-11-30 Rippere Ralph E Electrolytic methods for production of high density copper powder
US4046643A (en) * 1975-09-09 1977-09-06 Rippere Ralph E Production of multi-metal particles for powder metallurgy alloys
US5550104A (en) * 1994-09-09 1996-08-27 Davis, Joseph & Negley Electrodeposition process for forming superconducting ceramics

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1918605A (en) * 1928-01-09 1933-07-18 Parker Rust Proof Co Chromium plating
US2063760A (en) * 1931-09-10 1936-12-08 Schulein Joseph Bath for and process of electrodeposition of metal
FR960114A (en) * 1942-05-04 1950-04-13
US2515192A (en) * 1944-09-27 1950-07-18 Poor & Co Method of electroplating

Also Published As

Publication number Publication date
US2651609A (en) 1953-09-08

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