GB684132A - Method of electroplating - Google Patents

Method of electroplating

Info

Publication number
GB684132A
GB684132A GB2553/51A GB255351A GB684132A GB 684132 A GB684132 A GB 684132A GB 2553/51 A GB2553/51 A GB 2553/51A GB 255351 A GB255351 A GB 255351A GB 684132 A GB684132 A GB 684132A
Authority
GB
United Kingdom
Prior art keywords
zinc
current
ozs
plating
cycles
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
GB2553/51A
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 GB684132A publication Critical patent/GB684132A/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
    • 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
    • C25D3/22—Electroplating: Baths therefor from solutions of zinc

Landscapes

  • 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)

Abstract

684,132. Electro-deposition of zinc. POOR & CO. Feb. 1, 1951 [July 17, 1950], No. 2553/51. Drawings to Specification. Class 41. In a method of controlling the electrodeposition of zinc on to an electrically-conducting object of a type in which the zinc would normally be deposited in greater concentrations in some areas than in others by direct-current plating, the zinc is deposited from an acid zincsulphate bath with a plating current having an asymmetric waveform comprising an alternating current superimposed on a direct current in the ratio of 2 to 4 volts R.M.S. value to 2.5 volts direct current, at current densities from about 2 to about 15 amperes per square foot. The frequency of the alternating current may be from about 25 cycles to about 60 cycles, and the plating period may be from 8 seconds to about 1¢ minutes. The bath may contain per gallon 48 ozs. zinc sulphate, 4 ozs. ammonium chloride, 2 ozs. sodium acetate and 0.4 oz. sulphuric acid. Specifications 597,426 and 599,707 are referred to.
GB2553/51A 1950-07-17 1951-02-01 Method of electroplating Expired GB684132A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US174242A US2651610A (en) 1950-07-17 1950-07-17 Method of electroplating zinc

Publications (1)

Publication Number Publication Date
GB684132A true GB684132A (en) 1952-12-10

Family

ID=22635409

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2553/51A Expired GB684132A (en) 1950-07-17 1951-02-01 Method of electroplating

Country Status (2)

Country Link
US (1) US2651610A (en)
GB (1) GB684132A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2905603A (en) * 1957-09-04 1959-09-22 American Zinc Inst Zinc plating

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
US2651610A (en) 1953-09-08

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