GB1177373A - Improvements in or relating to gold electroplating - Google Patents

Improvements in or relating to gold electroplating

Info

Publication number
GB1177373A
GB1177373A GB300067A GB300067A GB1177373A GB 1177373 A GB1177373 A GB 1177373A GB 300067 A GB300067 A GB 300067A GB 300067 A GB300067 A GB 300067A GB 1177373 A GB1177373 A GB 1177373A
Authority
GB
United Kingdom
Prior art keywords
gold
acid
solution
jan
electro
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
GB300067A
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.)
Engelhard Minerals and Chemicals Corp
Original Assignee
Engelhard Minerals and Chemicals Corp
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 Engelhard Minerals and Chemicals Corp filed Critical Engelhard Minerals and Chemicals Corp
Publication of GB1177373A publication Critical patent/GB1177373A/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

1,177,373. Electro-deposition of gold or gold alloy. ENGELHARD MINERALS & CHEMICALS CORP. Jan.19, 1967[Jan.21, 1966], No.3000/67. Heading C7B. An electrolyte solution for use in the electrodeposition of gold or gold alloy comprises 1-50 g. alkali metal gold cyanide 10-200 g. alkali metal or ammonium pyrophosphate 20-100 g. superphosphoric acid 0À005-0À5 g. in total of at least one of the base metals Co, Ni, Cd and Zn, per litre of solution, the solution having a pH in the range from 3À5 to 4À5. Superphosphoric acid is defined as a mixture containing orthophosphoric acid and pyrophosphoric acid, with or without one or more of the other polyphosphoric acids, the mixture containing an equivalent of from 72 to 85% by weight of P 2 0 5 .. The base metal(s) may be added as a polyphosphate (e.g. pyrophosphate), orthophosphate or sulphate. The solution may also contain 5 to 20 g. /1. of dihydrogen ammonium phosphate. Examples are of electro-plating brass strip using electrolytes wherein the superphosphoric acid contains triphosphoric acid.
GB300067A 1966-01-21 1967-01-19 Improvements in or relating to gold electroplating Expired GB1177373A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US52204866A 1966-01-21 1966-01-21

Publications (1)

Publication Number Publication Date
GB1177373A true GB1177373A (en) 1970-01-14

Family

ID=24079247

Family Applications (1)

Application Number Title Priority Date Filing Date
GB300067A Expired GB1177373A (en) 1966-01-21 1967-01-19 Improvements in or relating to gold electroplating

Country Status (7)

Country Link
BE (1) BE692993A (en)
CH (1) CH480444A (en)
DE (1) DE1621067A1 (en)
FR (1) FR1508634A (en)
GB (1) GB1177373A (en)
NL (1) NL6700953A (en)
SE (1) SE312708B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1184904A2 (en) * 2000-08-23 2002-03-06 Acqutek Semiconductor & Technology Co. Ltd. Substrate for manufacturing a semiconductor device with three element alloy
US8142639B2 (en) * 2006-08-21 2012-03-27 Rohm And Haas Electronic Materials Llc Hard gold alloy plating bath

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0028684A1 (en) * 1979-09-06 1981-05-20 Western Electric Company, Incorporated Manufacture and aftertreatment of an article plated with gold, and article obtained thereby
KR830003601A (en) * 1979-09-06 1983-06-21 오. 이. 앨버 Steel plating electroplating without additives and their products

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1184904A2 (en) * 2000-08-23 2002-03-06 Acqutek Semiconductor & Technology Co. Ltd. Substrate for manufacturing a semiconductor device with three element alloy
EP1184904A3 (en) * 2000-08-23 2006-05-17 Acqutek Semiconductor & Technology Co. Ltd. Substrate for manufacturing a semiconductor device with three element alloy
US8142639B2 (en) * 2006-08-21 2012-03-27 Rohm And Haas Electronic Materials Llc Hard gold alloy plating bath

Also Published As

Publication number Publication date
NL6700953A (en) 1967-07-24
DE1621067A1 (en) 1971-04-22
SE312708B (en) 1969-07-21
BE692993A (en) 1967-07-20
FR1508634A (en) 1968-01-05
CH480444A (en) 1969-10-31

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