GB1392242A - Process for producing by electrodeposition bright deposits of gold and its alloys - Google Patents

Process for producing by electrodeposition bright deposits of gold and its alloys

Info

Publication number
GB1392242A
GB1392242A GB3236972A GB3236972A GB1392242A GB 1392242 A GB1392242 A GB 1392242A GB 3236972 A GB3236972 A GB 3236972A GB 3236972 A GB3236972 A GB 3236972A GB 1392242 A GB1392242 A GB 1392242A
Authority
GB
United Kingdom
Prior art keywords
gold
alkali metal
plated
alloys
coom
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
GB3236972A
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.)
Technic Inc
Original Assignee
Technic Inc
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 Technic Inc filed Critical Technic Inc
Publication of GB1392242A publication Critical patent/GB1392242A/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
    • C25D3/48—Electroplating: Baths therefor from solutions 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
    • C25D3/56—Electroplating: Baths therefor from solutions of alloys
    • C25D3/62—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of gold

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

1392242 Electro-deposition of gold and its alloys TECHNIC Inc 11 July 1972 [26 July 1971] 32369/72 Heading C7B Bright gold or gold base alloy is electrolytically deposited from an aqueous solution of pH 3 to 8 containing a water-soluble gold cyanide and a chelating agent selected from those represented by the Formula: where m and n are either 1 or 2 and m + n = 3 and M is hydrogen or an alkali metal cation (such as Na or K), and those represented by the Formula: where n is 1, 2 or 3 and R is either -CH 2 COOM or and M is hydrogen or an alkali metal cation (such as Na or K), at least one R being -CH 2 COOM and at least one R being -CH 2 PO 3 M 2 . Specified alloying metals are Cu, Co and Ni. The plating solution may also contain citric or malic acid or their alkali metal, ammonium or organic amine salts or, in some Examples, citric acid and potassium citrate. Possible inorganic additives are phosphates (such as KH 2 PO 4 , K 2 HPO 4 , H 3 PO 4 , Na 2 HPO 4 , NaHPO 4 ) polyphosphates, sulphamates, fluoborates and H 3 BO 3 . Substrates that may be plated upon are (a) 12- pin transistors by barrel plating, (b) Cu-plated test pieces and (c) Ni-plated discs. In the Examples indicated, the baths contain in solution in addition to Au as KAu(CN) 2 :-(3) Ni, (4 and 6) CO (5) Co and Ni, in each case as the sulphate. Reference has been directed by the Comptroller to Specification 1198527.
GB3236972A 1971-07-26 1972-07-11 Process for producing by electrodeposition bright deposits of gold and its alloys Expired GB1392242A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16603071A 1971-07-26 1971-07-26

Publications (1)

Publication Number Publication Date
GB1392242A true GB1392242A (en) 1975-04-30

Family

ID=22601503

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3236972A Expired GB1392242A (en) 1971-07-26 1972-07-11 Process for producing by electrodeposition bright deposits of gold and its alloys

Country Status (3)

Country Link
DE (1) DE2236493C3 (en)
FR (1) FR2147086B1 (en)
GB (1) GB1392242A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001046207A1 (en) * 1999-12-21 2001-06-28 Bracco S.P.A. Chelating compounds, their complexes with paramagnetic metals

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914162A (en) * 1973-06-25 1975-10-21 Monsanto Co Compositions and process for the electrodeposition of metals
JPS543456B2 (en) * 1973-08-10 1979-02-23

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001046207A1 (en) * 1999-12-21 2001-06-28 Bracco S.P.A. Chelating compounds, their complexes with paramagnetic metals
US6509324B1 (en) 1999-12-21 2003-01-21 Bracco S.P.A. Chelating compounds, their complexes with paramagnetic metals
JP2003518131A (en) * 1999-12-21 2003-06-03 ブラッコ エッセ ピ ア Chelate compounds and their complexes with paramagnetic metals

Also Published As

Publication number Publication date
FR2147086A1 (en) 1973-03-09
DE2236493A1 (en) 1973-02-08
FR2147086B1 (en) 1976-10-29
DE2236493B2 (en) 1976-07-08
DE2236493C3 (en) 1978-12-14

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee