GB292094A - Improvements in chromium plating - Google Patents

Improvements in chromium plating

Info

Publication number
GB292094A
GB292094A GB13874/28A GB1387428A GB292094A GB 292094 A GB292094 A GB 292094A GB 13874/28 A GB13874/28 A GB 13874/28A GB 1387428 A GB1387428 A GB 1387428A GB 292094 A GB292094 A GB 292094A
Authority
GB
United Kingdom
Prior art keywords
gms
chloride
per
chromium
per litre
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
GB13874/28A
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.)
Ternstedt Manufacturing Co
Original Assignee
Ternstedt Manufacturing Co
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 Ternstedt Manufacturing Co filed Critical Ternstedt Manufacturing Co
Publication of GB292094A publication Critical patent/GB292094A/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
    • C25D3/04—Electroplating: Baths therefor from solutions of chromium
    • C25D3/06—Electroplating: Baths therefor from solutions of chromium from solutions of trivalent chromium

Abstract

292,094. Potts, H. E., (Ternstedt Manufacturing Co.). May 11, 1928. A Specification was laid open to inspection under Sect. 91 of the Acts, June 14, 1928]. Chromium, depositing. - The bath contains chromic chloride and a plurality of alkali metal or alkaline earth metal chlorides in a concentration substantially greater than could be obtained by saturation with one of such chlorides alone. A suitable bath contains 300 gms. hydrated chromic chloride in the violet modification, 250 gms. potassium chloride, 150 gms. sodium chloride, 150 gms. ammonium chloride per litre; the amounts may be increased to the (cold) saturation values. To this may be added 3-5 gms. per litre of sodium fluoride, 75-100 gms per litre of oxalic acid as a reducing agent and 1 per cent of nitric acid. Other fluorides may also be used. The anode is of chromium or of a soluble chromium compound such as ferrochrome. A voltage of 8-12 and a current density of 250-1000 amps. per sq. ft. of cathode surface are employed. Specifications 19344/90 and 22855/91 are referred to.
GB13874/28A 1928-03-26 1928-05-11 Improvements in chromium plating Expired GB292094A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US264952A US1838777A (en) 1928-03-26 1928-03-26 Chromium plating

Publications (1)

Publication Number Publication Date
GB292094A true GB292094A (en) 1929-08-08

Family

ID=10030950

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13874/28A Expired GB292094A (en) 1928-03-26 1928-05-11 Improvements in chromium plating

Country Status (3)

Country Link
US (1) US1838777A (en)
FR (1) FR655698A (en)
GB (1) GB292094A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2771414A (en) * 1951-06-27 1956-11-20 Reginald S Dean Method of making electrolytic chromium
US3006823A (en) * 1959-10-07 1961-10-31 Du Pont Plating bath and process
US3069333A (en) * 1961-07-25 1962-12-18 Du Pont Chromium plating
US4612091A (en) * 1982-06-30 1986-09-16 Asociation Pour La Recherche Et Le Developpement Des Methodes Et Processus Industriels Chromium electroplating trivalent chrominum bath therefore and method of making such bath
CN103643251A (en) * 2013-12-11 2014-03-19 中国科学院青海盐湖研究所 Device and method for preparing potassium chromate solution by using electrolytic method
CN115976535A (en) * 2022-12-23 2023-04-18 中国科学院青海盐湖研究所 Method and device for preparing trivalent chromium salt by electrochemical oxidation of chromium iron in acid system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733199A (en) * 1956-01-31 Electrolytic treatment of metal
US2415950A (en) * 1943-02-08 1947-02-18 Pittsburgh Plate Glass Co Chromium compound
US2847371A (en) * 1955-06-28 1958-08-12 Tiarco Corp Chromium plating on aluminum
FR1563847A (en) * 1968-01-30 1969-04-18
GB1437818A (en) * 1973-05-31 1976-06-03 British Chrome Chemicals Ltd Electrodeposition of chromium

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2771414A (en) * 1951-06-27 1956-11-20 Reginald S Dean Method of making electrolytic chromium
US3006823A (en) * 1959-10-07 1961-10-31 Du Pont Plating bath and process
US3021267A (en) * 1959-10-07 1962-02-13 Du Pont Plating bath and process
US3069333A (en) * 1961-07-25 1962-12-18 Du Pont Chromium plating
US4612091A (en) * 1982-06-30 1986-09-16 Asociation Pour La Recherche Et Le Developpement Des Methodes Et Processus Industriels Chromium electroplating trivalent chrominum bath therefore and method of making such bath
CN103643251A (en) * 2013-12-11 2014-03-19 中国科学院青海盐湖研究所 Device and method for preparing potassium chromate solution by using electrolytic method
CN115976535A (en) * 2022-12-23 2023-04-18 中国科学院青海盐湖研究所 Method and device for preparing trivalent chromium salt by electrochemical oxidation of chromium iron in acid system
CN115976535B (en) * 2022-12-23 2023-08-18 中国科学院青海盐湖研究所 Method and device for preparing trivalent chromium salt by electrochemical oxidation of ferrochrome in acidic system

Also Published As

Publication number Publication date
US1838777A (en) 1931-12-29
FR655698A (en) 1929-04-22

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