GB1198527A - Improvements in Electrodeposition of Gold and Gold Alloys - Google Patents
Improvements in Electrodeposition of Gold and Gold AlloysInfo
- Publication number
- GB1198527A GB1198527A GB3955467A GB3955467A GB1198527A GB 1198527 A GB1198527 A GB 1198527A GB 3955467 A GB3955467 A GB 3955467A GB 3955467 A GB3955467 A GB 3955467A GB 1198527 A GB1198527 A GB 1198527A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gold
- acid
- organo
- cobalt
- nickel
- 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
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
1,198,527. Electro-depositing gold and gold alloys. F.I. NOBEL and B.D. OSTROW. Aug.29, 1967, No.39554/67. Heading C7B. Gold or gold-base alloy is electro-deposited from an aqueous solution of at least one soluble gold cyanide salt in which there is dissolved an organo-phosphorus compound which does not contain in the molecule any straight - or branchedchain acyclic or cyclic aliphatic hydrocarbon residue which is linked directly to a phosphorus atom and which contains more than five carbon atoms. The organo-phosphorus may be a non- chelating agent, e.g. benzene phosphoric acid, benzene phosphinic acid, ethyl acid phosphate- C 2 H 5 O-PO(OH) 2 or diethyl phosphite; or may be a chelating agent, e.g. having the formula:- wherein R is an alkylidene radical, R<SP>1</SP> is hydrogen or an alkyl radical and n is an integer from 1 to 3, the radicals containing 5 or less carbon atoms, e.g. amino-tri (methy phosphonic acid), aminotri (ethylidene phosphonic acid), or amino-tri (isopropylidene phosphonic acid) or for instance 1-hydroxyethylidene-1, 1 diphosphonic acid; ethylenediaminetetra (methylphosphonic) acid; hexamethylene-diaminetetra (methylphosphonic) acid, or hexamethyl phosphonic triamide. The organo-phosphorus compound may be a salt of lithium, sodium or potassium or an ammonium or amine salt. The electrolyte may include a soluble citrate. The pH of the bath may be adjusted by addition of alkali metal hydroxide, e.g. potassium hydroxide, or phosphoric acid. To deposit gold base alloys, the plating bath may contain alloying metals such nickel, cobalt, iron, zinc and copper in the form of water soluble salts, e.g. the bath may contain nickel sulphate, nickel tartrate, cobalt sulphate or cobalt gluconate. Gold plate may be deposited on a brass base.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US57982166A | 1966-09-16 | 1966-09-16 | |
US63413467A | 1967-04-27 | 1967-04-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1198527A true GB1198527A (en) | 1970-07-15 |
Family
ID=27077877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3955467A Expired GB1198527A (en) | 1966-09-16 | 1967-08-29 | Improvements in Electrodeposition of Gold and Gold Alloys |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH477559A (en) |
DE (1) | DE1621128C3 (en) |
GB (1) | GB1198527A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1975282A1 (en) * | 2007-03-28 | 2008-10-01 | Umicore Galvanotechnik GmbH | Electrolyte and method for separating decorative and technical layers from black ruthenium |
-
1967
- 1967-08-29 GB GB3955467A patent/GB1198527A/en not_active Expired
- 1967-09-08 CH CH1257467A patent/CH477559A/en not_active IP Right Cessation
- 1967-09-08 DE DE1967N0031214 patent/DE1621128C3/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1975282A1 (en) * | 2007-03-28 | 2008-10-01 | Umicore Galvanotechnik GmbH | Electrolyte and method for separating decorative and technical layers from black ruthenium |
WO2008116545A1 (en) * | 2007-03-28 | 2008-10-02 | Umicore Galvanotechnik Gmbh | Electrolyte and method for depositing decorative and technical layers of black ruthenium |
Also Published As
Publication number | Publication date |
---|---|
DE1621128B2 (en) | 1972-11-30 |
DE1621128A1 (en) | 1971-05-13 |
DE1621128C3 (en) | 1979-09-20 |
CH477559A (en) | 1969-08-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3706635A (en) | Electrochemical compositions and processes | |
US3933602A (en) | Palladium electroplating bath, process, and preparation | |
US3475293A (en) | Electrodeposition of metals | |
US3672969A (en) | Electrodeposition of gold and gold alloys | |
FR2404682A1 (en) | ELECTROLYTIC DEPOSIT PROCESS, ESPECIALLY OF ZINC, COPPER AND NICKEL-IRON, AND BATHS USED FOR THIS PURPOSE, CONTAINING A SULFAMALKYLATED POLYAMINE | |
EP0925388A1 (en) | Electroplating of nickel-phosphorus alloys coatings | |
US3355267A (en) | Corrosion resistant coated articles and processes of production thereof | |
US4144141A (en) | Ammonia free palladium deposition using aminoacetic acid | |
CN100529195C (en) | Noncyanide electrolytic solution for gold plating | |
GB718574A (en) | Bath for the deposit of gold alloys by electroplating | |
US3637474A (en) | Electrodeposition of palladium | |
US3914162A (en) | Compositions and process for the electrodeposition of metals | |
JP2016117946A (en) | Environmentally friendly gold electroplating compositions and methods | |
US3879270A (en) | Compositions and process for the electrodeposition of metals | |
US2384300A (en) | Electrolytic deposition of zinc | |
US3298937A (en) | Electroplating baths and processes | |
US3883409A (en) | Gold alloy electroplating bath | |
US4478692A (en) | Electrodeposition of palladium-silver alloys | |
US3990954A (en) | Sulfite gold plating bath and process | |
GB1198527A (en) | Improvements in Electrodeposition of Gold and Gold Alloys | |
US2892760A (en) | Production of metal electrodeposits | |
ES457169A1 (en) | Additive for improved electroplating process | |
US2435967A (en) | Bright alloy plating | |
GB2034756A (en) | Electroless Deposition of Transition Metals | |
ES472577A1 (en) | Acid zinc electroplating process and composition |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
PCNP | Patent ceased through non-payment of renewal fee |