GB1065308A - Improvements in electrodeposition of gold alloys - Google Patents

Improvements in electrodeposition of gold alloys

Info

Publication number
GB1065308A
GB1065308A GB5170965A GB5170965A GB1065308A GB 1065308 A GB1065308 A GB 1065308A GB 5170965 A GB5170965 A GB 5170965A GB 5170965 A GB5170965 A GB 5170965A GB 1065308 A GB1065308 A GB 1065308A
Authority
GB
United Kingdom
Prior art keywords
ions
gold
salts
alkali metal
added
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
GB5170965A
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
Publication of GB1065308A publication Critical patent/GB1065308A/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
    • C25D3/62—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of gold
    • 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
    • C25D3/48—Electroplating: Baths therefor from solutions of gold

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)

Abstract

Gold or gold alloys are plated from a solution containing Au ions (preferably as cyanide) and also ions of Co, Ni, or Fe, to which is added oxalate ions which control the amount of base metal co-deposited, or suppress it entirely. The oxalate is added in the form of oxalic acid, or acid or neutral salts of alkali metal, NH4 or Mg salts. About 1/2 oz. per gal. controls deposition, and 2 oz. per gal. prevents deposition, e.g. to maintain gold solution clean when desired, instead of forming alloys. The bath preferably contains citric acid, or salts thereof and alkali metal phosphates, and is maintained at pH 3 to 5.5 by adding inorganic bases or acids.
GB5170965A 1965-10-19 1965-12-06 Improvements in electrodeposition of gold alloys Expired GB1065308A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US49808665A 1965-10-19 1965-10-19

Publications (1)

Publication Number Publication Date
GB1065308A true GB1065308A (en) 1967-04-12

Family

ID=23979547

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5170965A Expired GB1065308A (en) 1965-10-19 1965-12-06 Improvements in electrodeposition of gold alloys

Country Status (2)

Country Link
DE (1) DE1280015B (en)
GB (1) GB1065308A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7279086B2 (en) 2003-05-21 2007-10-09 Technic, Inc. Electroplating solution for alloys of gold with tin

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE570261A (en) * 1957-08-13

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7279086B2 (en) 2003-05-21 2007-10-09 Technic, Inc. Electroplating solution for alloys of gold with tin

Also Published As

Publication number Publication date
DE1280015B (en) 1968-10-10

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