GB509965A - Improvements in and relating to methods of coating metals - Google Patents

Improvements in and relating to methods of coating metals

Info

Publication number
GB509965A
GB509965A GB27539/38A GB2753938A GB509965A GB 509965 A GB509965 A GB 509965A GB 27539/38 A GB27539/38 A GB 27539/38A GB 2753938 A GB2753938 A GB 2753938A GB 509965 A GB509965 A GB 509965A
Authority
GB
United Kingdom
Prior art keywords
ozs
mercury
silver
water
gallon
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
GB27539/38A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB509965A publication Critical patent/GB509965A/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
    • C25D5/10—Electroplating with more than one layer of the same or of different metals

Abstract

509,965. Electroplating. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 21, 1938, No. 27539. Convention date, Sept. 22, 1937. [Class 41] A copper article is coated with silver by first dipping in an acid solution, or an alkaline solution followed by an acid solution, to brighten the copper, coating electrolytically with mercury and electrolytically depositing silver on the mercury surface before any substantial oxidation of the mercury occurs. The mercury-plating solution may contain 1¢ ozs. of mercuric chloride, 4 ozs. of sodium cyanide, 2 ozs. of ammonium chloride, and 1 gallon (U.S.A.) of water. The ferrous metal tank serves as anode. A current of 10-15 amps. per sq. ft. is applied for 3-5 seconds. The article is rinsed in water and transferred to a silver-plating solution containing 4 ozs. of silver cyanide, 6 ozs. of sodium cyanide, ¢ oz. of ammonium chloride and 1 gallon (U.S.A.) of water. Specifications 476,375, [Group XXII], and 492,088 are referred to.
GB27539/38A 1937-09-22 1938-09-21 Improvements in and relating to methods of coating metals Expired GB509965A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US509965XA 1937-09-22 1937-09-22

Publications (1)

Publication Number Publication Date
GB509965A true GB509965A (en) 1939-07-25

Family

ID=21968741

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27539/38A Expired GB509965A (en) 1937-09-22 1938-09-21 Improvements in and relating to methods of coating metals

Country Status (1)

Country Link
GB (1) GB509965A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3179575A (en) * 1959-07-11 1965-04-20 Philips Corp Method of producing silver layer on non-metallic electrically non-conductive support
US4780176A (en) * 1983-06-30 1988-10-25 University Of South Carolina Method of wetting metals

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3179575A (en) * 1959-07-11 1965-04-20 Philips Corp Method of producing silver layer on non-metallic electrically non-conductive support
US4780176A (en) * 1983-06-30 1988-10-25 University Of South Carolina Method of wetting metals

Similar Documents

Publication Publication Date Title
GB548184A (en) Corrosion proofing metal articles
GB1185527A (en) Method of Tin-plating Sheet Steel by Electro-deposition
GB466949A (en) Improvements in or relating to the electroplating of aluminium or aluminium alloys
GB503008A (en) Improvements in the electrodeposition of metals on alloys containing chromium
GB736832A (en) Improvements in or relating to the electrodeposition of antimony
GB500113A (en) Improvements in processes for nickel-plating of aluminium and its alloys
US2075623A (en) Zinc plating
GB1270902A (en) Continuously bronze plating aluminium wire or strip
GB533610A (en) Improved process and apparatus for the electro-deposition of tin alloys
GB617689A (en) Improvements relating to the electro deposition of nickel on nickel
GB509965A (en) Improvements in and relating to methods of coating metals
GB1320373A (en) Copper electroplating in a citric acid bath
GB1131558A (en) Method of electroplating nickel on an aluminium article
GB1300304A (en) Electroplated solder
US2133996A (en) Art of gold plating
GB1404067A (en) Electrolytic surface treatment of copper and copper base articles
GB760084A (en) Improvements in and relating to the electrodeposition of antimony
US2879210A (en) Process of electroplating on aluminum
US2446716A (en) Terne electroplating bath
GB626693A (en) Improvements in and relating to the surface treatment of aluminium and aluminium base alloys
GB786768A (en) Aqueous zinc-tin alloy electroplating bath
US1527577A (en) Electroplating bath
GB492088A (en) Improvements in and relating to methods of joining metals
GB1155575A (en) A method of Electrolysing Aqueous Hydrochloric Acid
ES356925A1 (en) Coating of Iron or Iron Alloys