GB896810A - A process for protecting zinc against corrosion - Google Patents

A process for protecting zinc against corrosion

Info

Publication number
GB896810A
GB896810A GB33281/59A GB3328159A GB896810A GB 896810 A GB896810 A GB 896810A GB 33281/59 A GB33281/59 A GB 33281/59A GB 3328159 A GB3328159 A GB 3328159A GB 896810 A GB896810 A GB 896810A
Authority
GB
United Kingdom
Prior art keywords
against corrosion
zinc against
protecting zinc
protecting
galvanised
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
GB33281/59A
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.)
Cornigliano SpA
Original Assignee
Cornigliano SpA
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 Cornigliano SpA filed Critical Cornigliano SpA
Publication of GB896810A publication Critical patent/GB896810A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/24—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Electroplating And Plating Baths Therefor (AREA)

Abstract

The zinc layer of a galvanised article is protected against corrosion by immersing it in an aqueous solution containing 0,7-1,2% w/v of an oxidising compound of hexavalent chromium, 0,005-0,02% v/v sulphuric acid (S.G. 1,84), and 0,02-0,35% v/v wetting agent.
GB33281/59A 1959-04-01 1959-10-01 A process for protecting zinc against corrosion Expired GB896810A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT896810X 1959-04-01

Publications (1)

Publication Number Publication Date
GB896810A true GB896810A (en) 1962-05-16

Family

ID=11331660

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33281/59A Expired GB896810A (en) 1959-04-01 1959-10-01 A process for protecting zinc against corrosion

Country Status (1)

Country Link
GB (1) GB896810A (en)

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