GB829429A - Improvements in or relating to the electro-deposition of chromium - Google Patents

Improvements in or relating to the electro-deposition of chromium

Info

Publication number
GB829429A
GB829429A GB32593/56A GB3259356A GB829429A GB 829429 A GB829429 A GB 829429A GB 32593/56 A GB32593/56 A GB 32593/56A GB 3259356 A GB3259356 A GB 3259356A GB 829429 A GB829429 A GB 829429A
Authority
GB
United Kingdom
Prior art keywords
chromium
acid
acids
oct
reducing agent
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
GB32593/56A
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.)
Diamond Shamrock Corp
Original Assignee
Diamond Alkali 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 Diamond Alkali Co filed Critical Diamond Alkali Co
Publication of GB829429A publication Critical patent/GB829429A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/24—Chromium, molybdenum or tungsten
    • B01J23/26—Chromium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/06—Halogens; Compounds thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Electrochemistry (AREA)
  • Plasma & Fusion (AREA)
  • Toxicology (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Catalysts (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

829,429. Electrodeposition of chromium. DIAMOND ALKALI CO. Oct. 25, 1956 [Oct. 28, 1955], No. 32593/56. Drawings to Specification. Class 41. Chromium is electrodeposited from an aqueous solution of chromium ions and anions of sulphuric, nitric, or hydrochloric acid to which is added a composition produced by reacting a hexavalent chromium compound, an organic reducing agent, and hydrofluosilicic acid or the reaction product of hydrogen fluoride with silicon dioxide. The composition containing 22.9 to 28.2% of chromium, 2.58 to 7.75% of silicon, and 23.9 to 36.4% of fluorine. Typically the hexavalent chromium compound is chromic acid; the reducing agent is a sugar, although polyhydric alcohols, gelatine, sawdust, acids such as formic, acetic, oxalic, glycollic, tartaric and citric acids, and alkyl esters of the lower fatty acids and substances such as molasses and fruit pulp may be used; and the plating bath is a sulphuric acid-chromic acid bath having a CrO 3 : H 2 SO 4 ratio of from 250-150: 1. The composition used may be prepared by boiling the reactants together and may be spray-dried before use.
GB32593/56A 1955-10-28 1956-10-25 Improvements in or relating to the electro-deposition of chromium Expired GB829429A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US543354A US2841540A (en) 1955-10-28 1955-10-28 Chemical composition for chromium plating

Publications (1)

Publication Number Publication Date
GB829429A true GB829429A (en) 1960-03-02

Family

ID=24167650

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32593/56A Expired GB829429A (en) 1955-10-28 1956-10-25 Improvements in or relating to the electro-deposition of chromium

Country Status (4)

Country Link
US (1) US2841540A (en)
DE (1) DE1049190B (en)
FR (1) FR1163111A (en)
GB (1) GB829429A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3444060A (en) * 1964-07-28 1969-05-13 Elektrometallurgie Gmbh Method of electrolytically precipitating chromium metal from aqueous chromium (vi) oxide solutions

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3097064A (en) * 1961-03-13 1963-07-09 Lloyd Donald W Recovery of values from pickling liquor
US3393980A (en) * 1963-08-09 1968-07-23 M & T Chemicals Inc Analytical method for determining active fluoride in acid solution
US3419481A (en) * 1966-04-08 1968-12-31 Diamond Shamrock Corp Electrolyte and process for electroplating black chromium and article thereby produced
US3909372A (en) * 1972-04-03 1975-09-30 Fuji Kuromu Sha Kk Process for treating spent iron-containing chromium plating solution to remove iron values contained therein and regenerate the solution
US3816142A (en) * 1972-05-08 1974-06-11 K Lindemann Electroless chromium plating process and composition
JP5326515B2 (en) * 2008-11-18 2013-10-30 上村工業株式会社 Chromium plating bath manufacturing method and plating film forming method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1844751A (en) * 1925-08-12 1932-02-09 United Chromium Inc Process of electrodepositing chromium
US1815081A (en) * 1928-11-05 1931-07-21 Standard Sanitary Mfg Co Chromium plating
US1928284A (en) * 1932-01-14 1933-09-26 Colin G Fink Process of electrodepositing chromium
GB617292A (en) * 1946-09-24 1949-02-03 Berger Peter Improvements relating to the electro-deposition of chromium
BE517665A (en) * 1949-11-23

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3444060A (en) * 1964-07-28 1969-05-13 Elektrometallurgie Gmbh Method of electrolytically precipitating chromium metal from aqueous chromium (vi) oxide solutions

Also Published As

Publication number Publication date
US2841540A (en) 1958-07-01
DE1049190B (en) 1959-01-22
FR1163111A (en) 1958-09-23

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