GB367587A - Improvements in or relating to the electro-deposition of palladium - Google Patents

Improvements in or relating to the electro-deposition of palladium

Info

Publication number
GB367587A
GB367587A GB7601/31A GB760131A GB367587A GB 367587 A GB367587 A GB 367587A GB 7601/31 A GB7601/31 A GB 7601/31A GB 760131 A GB760131 A GB 760131A GB 367587 A GB367587 A GB 367587A
Authority
GB
United Kingdom
Prior art keywords
palladium
palladosammine
gms
nitrate
bath
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
GB7601/31A
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.)
Johnson Matthey PLC
Original Assignee
Johnson Matthey PLC
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 Johnson Matthey PLC filed Critical Johnson Matthey PLC
Priority to GB7601/31A priority Critical patent/GB367587A/en
Publication of GB367587A publication Critical patent/GB367587A/en
Priority to US597631A priority patent/US1921941A/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
    • C25D3/50—Electroplating: Baths therefor from solutions of platinum group metals

Abstract

367,587. Electrodeposition of palladium. POWELL, A. R., DAVIES, E. C., and JOHNSON, MATTHEY, & CO., Ltd., 78, Hatton Garden, London. March 12, 1931, No. 7601. [Class 41.] Palladium is deposited as a bright adherent plating from a solution of a palladosammine compound the acid group of which is not reduced under the plating conditions, such as palladosammine sulphate, nitrate, or phosphate. A conducting salt and a small quantity of an acid such as sulphuric, nitric, or phosphoric acids or of an alkali are preferably added to the bath. A suitable bath is made by dissolving 30 gms. of palladosammine nitrate in 1 litre of warm water to which is then added 50 gms. of sodium sulphate or nitrate together with 10 gms. of phosphoric acid or 10 c.c. of strong ammonia solution. A small quantity, e.g. 0À01 per cent, of a colloid such as dextrin, glue, or a vegetable gum may be added to refine the grain size and improve the brightness of the deposit. The plating temperature should be above 40‹ C. preferably 65-80‹ C. A current density of 3-25 amps. per square foot at 1À5 volts, or higher may be used. The bath is regenerated when the palladium content has fallen below 0À5 per cent.
GB7601/31A 1931-03-12 1931-03-12 Improvements in or relating to the electro-deposition of palladium Expired GB367587A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB7601/31A GB367587A (en) 1931-03-12 1931-03-12 Improvements in or relating to the electro-deposition of palladium
US597631A US1921941A (en) 1931-03-12 1932-03-08 Electrodeposition of palladium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7601/31A GB367587A (en) 1931-03-12 1931-03-12 Improvements in or relating to the electro-deposition of palladium

Publications (1)

Publication Number Publication Date
GB367587A true GB367587A (en) 1932-02-25

Family

ID=9836241

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7601/31A Expired GB367587A (en) 1931-03-12 1931-03-12 Improvements in or relating to the electro-deposition of palladium

Country Status (2)

Country Link
US (1) US1921941A (en)
GB (1) GB367587A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3150065A (en) * 1961-02-27 1964-09-22 Ibm Method for plating palladium
US4411743A (en) * 1981-05-13 1983-10-25 Degussa Electrolytic palladium bath and process
US7198762B1 (en) 1999-09-14 2007-04-03 Daniel Teboul Device for treating an internal combustion engine exhaust gases

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL123540C (en) * 1958-08-06
NL241990A (en) * 1958-08-06
NL276877A (en) * 1961-04-06
GB1035850A (en) * 1964-06-12 1966-07-13 Johnson Matthey Co Ltd Improvements in and relating to the electrodeposition of palladium
US3458409A (en) * 1964-10-12 1969-07-29 Shinichi Hayashi Method and electrolyte for thick,brilliant plating of palladium
US3376442A (en) * 1965-01-18 1968-04-02 Vernon J. David Alternating current electric motor
NL130012C (en) * 1965-03-09
CH572989A5 (en) * 1973-04-27 1976-02-27 Oxy Metal Industries Corp
US3920526A (en) * 1974-03-12 1975-11-18 Ibm Process for the electrodeposition of ductile palladium and electroplating bath useful therefor
US4284482A (en) * 1980-09-22 1981-08-18 Bell Telephone Laboratories, Incorporated Palladium treatment procedure
US4299670A (en) * 1980-09-22 1981-11-10 Bell Telephone Laboratories, Incorporated Palladium plating procedure and bath
US4316779A (en) * 1980-09-26 1982-02-23 Bell Telephone Laboratories, Incorporated Process for electroplating palladium on articles comprising copper
US4552628A (en) * 1982-09-09 1985-11-12 Engelhard Corporation Palladium electroplating and bath thereof
FR2539145B1 (en) * 1983-01-07 1986-08-29 Omi Int Corp PROCESS FOR FORMING AT HIGH SPEED, BY ELECTROLYSIS, A PALLADIUM COATING LAYER ON A SUBSTRATE AND A BATH FOR THE IMPLEMENTATION OF THIS PROCESS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3150065A (en) * 1961-02-27 1964-09-22 Ibm Method for plating palladium
US4411743A (en) * 1981-05-13 1983-10-25 Degussa Electrolytic palladium bath and process
US7198762B1 (en) 1999-09-14 2007-04-03 Daniel Teboul Device for treating an internal combustion engine exhaust gases

Also Published As

Publication number Publication date
US1921941A (en) 1933-08-08

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