GB811604A - Method of preparing stainless steel and aluminium alloy surfaces for use in contact with concentrated hydrogen peroxide - Google Patents

Method of preparing stainless steel and aluminium alloy surfaces for use in contact with concentrated hydrogen peroxide

Info

Publication number
GB811604A
GB811604A GB3921856A GB3921856A GB811604A GB 811604 A GB811604 A GB 811604A GB 3921856 A GB3921856 A GB 3921856A GB 3921856 A GB3921856 A GB 3921856A GB 811604 A GB811604 A GB 811604A
Authority
GB
United Kingdom
Prior art keywords
hydrogen peroxide
stainless steel
contact
aluminium alloy
concentrated hydrogen
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
GB3921856A
Inventor
Frank Philip Greenspan
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.)
FMC Corp
Original Assignee
FMC Corp
Food Machinery and Chemical Corp
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 FMC Corp, Food Machinery and Chemical Corp filed Critical FMC Corp
Priority to GB3921856A priority Critical patent/GB811604A/en
Publication of GB811604A publication Critical patent/GB811604A/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
    • C23C22/07—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 phosphates

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)
  • Chemical Treatment Of Metals (AREA)

Abstract

Stainless steel and aluminium alloys which are to be brought into contact with hydrogen peroxide having a concentration of at least 70 per cent and containing at least 5 parts per million orthophosphoric acid are passivated by treatment for at least one hour with an aqueous solution containing at least 20 per cent hydrogen peroxide and not less than 10 parts per million orthophosphoric acid. The metal may form a container, pipe or pump.ALSO:Stainless steel and aluminium alloys which are to be brought into contact with hydrogen peroxide having a concentration of at least 70 per cent and containing at least 5 parts per million orthophosphoric acid are passivated by treatment for at least one hour with an aqueous solution containing at least 20 per cent hydrogen peroxide and not less than 10 parts per million orthophosphoric acid. The metal may form a container, pipe or drum.
GB3921856A 1956-12-24 1956-12-24 Method of preparing stainless steel and aluminium alloy surfaces for use in contact with concentrated hydrogen peroxide Expired GB811604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3921856A GB811604A (en) 1956-12-24 1956-12-24 Method of preparing stainless steel and aluminium alloy surfaces for use in contact with concentrated hydrogen peroxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3921856A GB811604A (en) 1956-12-24 1956-12-24 Method of preparing stainless steel and aluminium alloy surfaces for use in contact with concentrated hydrogen peroxide

Publications (1)

Publication Number Publication Date
GB811604A true GB811604A (en) 1959-04-08

Family

ID=10408339

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3921856A Expired GB811604A (en) 1956-12-24 1956-12-24 Method of preparing stainless steel and aluminium alloy surfaces for use in contact with concentrated hydrogen peroxide

Country Status (1)

Country Link
GB (1) GB811604A (en)

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