GB830205A - A process for ferrochrome electroplating - Google Patents

A process for ferrochrome electroplating

Info

Publication number
GB830205A
GB830205A GB39152/57A GB3915257A GB830205A GB 830205 A GB830205 A GB 830205A GB 39152/57 A GB39152/57 A GB 39152/57A GB 3915257 A GB3915257 A GB 3915257A GB 830205 A GB830205 A GB 830205A
Authority
GB
United Kingdom
Prior art keywords
gms
iron
bath
sulphate
chromium
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
GB39152/57A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB830205A publication Critical patent/GB830205A/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
    • C25D3/56—Electroplating: Baths therefor from solutions of alloys
    • C25D3/562—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of iron or nickel or cobalt

Abstract

830,205. Electrodeposition of ferrochrome alloys. YOSHIDA, T. Dec. 17, 1957 [April 15, 1957], No. 39152/57. Class 41. An iron-chromium alloy containing 5 to 40% chromium is electrodeposited at 25‹ to 55‹ C. from an aqueous bath containing per litre 37 to 200 gms. anhydrous chromic sulphate, 29 to 185 gms. anhydrous ferrous sulphate, 32 to 330 gms. ammonium sulphate, 60 to 264 gms. urea, and 0.055 to 88.74 gms. of one or more magnesium, aluminium, or manganous sulphate, the ratio of trivalent chromium to divalent iron being from 0.3 to 3.2 : 1 and the bath being held before electrolysis for at least 4 hours at a temperature between 25 and 55 ‹ C. Examples are given of electroplating brass and electrolytically coppered steel articles with iron-chromium alloys using bagged anodes of commercial ferrochrome alloys. Preferably the pH is in the range 1.7 to 2.5, scrap iron is hung in the bath to reduce ferric iron formed in the bath and replace the ferrous iron content, and addition agents such as fluorides, oxalates, citrates, or the corresponding acids, hydrazine or its salts, and a surface-active agent may be included in the bath. Specifications 715,225, 771,695, and U.S.A. Specification 2,693,444 are referred to.
GB39152/57A 1957-04-15 1957-12-17 A process for ferrochrome electroplating Expired GB830205A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP830205X 1957-04-15

Publications (1)

Publication Number Publication Date
GB830205A true GB830205A (en) 1960-03-09

Family

ID=13790541

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39152/57A Expired GB830205A (en) 1957-04-15 1957-12-17 A process for ferrochrome electroplating

Country Status (3)

Country Link
US (1) US2988492A (en)
DE (1) DE1061150B (en)
GB (1) GB830205A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163779A (en) * 1984-08-27 1986-03-05 Nippon Kokan Kk Cr-alloy plating bath

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2693444A (en) * 1951-02-12 1954-11-02 Battelle Development Corp Electrodeposition of chromium and alloys thereof
US2766196A (en) * 1953-11-09 1956-10-09 Yoshida Tadashi Process for the electrodeposition of iron-chromium alloys

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163779A (en) * 1984-08-27 1986-03-05 Nippon Kokan Kk Cr-alloy plating bath

Also Published As

Publication number Publication date
DE1061150B (en) 1959-07-09
US2988492A (en) 1961-06-13

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