GB1327567A - Corrosion-resistant aluminium surfaces - Google Patents

Corrosion-resistant aluminium surfaces

Info

Publication number
GB1327567A
GB1327567A GB1183872A GB1183872A GB1327567A GB 1327567 A GB1327567 A GB 1327567A GB 1183872 A GB1183872 A GB 1183872A GB 1183872 A GB1183872 A GB 1183872A GB 1327567 A GB1327567 A GB 1327567A
Authority
GB
United Kingdom
Prior art keywords
solution
rinse
treat
parts
acid
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
GB1183872A
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.)
Marosi M N
Original Assignee
Marosi M N
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 Marosi M N filed Critical Marosi M N
Publication of GB1327567A publication Critical patent/GB1327567A/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
    • C23C22/34—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 fluorides or complex fluorides
    • 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
    • C23C22/48—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 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
    • C23C22/56—Treatment of aluminium or alloys based thereon

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)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

1327567 Treating Al surfaces M N MAROSI 14 March 1972 [14 July 1971] 11838/72 Heading C7U Corrosion-resistance of Al is improved by treatment with an aqueous solution comprising (1) sulphanic acid, (2) a carboxylic acid containing 3 or more carboxyl groups, (3) a K salt of a halogen-containing acid, and (4) an anionic detergent. A composition for the above contains 10-60 wt. per cent of (1), 10-60 wt. per cent of (2), 2-30% of (3) and 0À5-15% of (4), and is used in aqueous solution. Typically, (2) is citric acid, (3) is KHF 2 , and (4) is Na alkyl aryl sulphonate, and a typical treatment procedure is (a) cleanse in solution of non-ionic detergent, (b) treat with NaOH, e. g. 2-20% solution at ambient temperature to 135‹F. for 1-6 minutes, (c) rinse, (d) treat for 2-10 min. in a 2-20% solution of 1-3À5 wt. parts Na 2 Cr 2 O 7 , 2-6 parts NaHF 2 and 10-20 parts H 2 SO 4 (e) rinse (f) treat in the above solution, e.g. at 3-25% concentration, pH 5-6À8, for 5-30 min, and (g) rinse. Optionally the treated plate is dipped in resin solution at pH 9 for 2-3 min. and baked at 250‹-350‹F. for about 10 min.
GB1183872A 1971-07-14 1972-03-14 Corrosion-resistant aluminium surfaces Expired GB1327567A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16265871A 1971-07-14 1971-07-14

Publications (1)

Publication Number Publication Date
GB1327567A true GB1327567A (en) 1973-08-22

Family

ID=22586578

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1183872A Expired GB1327567A (en) 1971-07-14 1972-03-14 Corrosion-resistant aluminium surfaces

Country Status (6)

Country Link
BE (1) BE782061A (en)
CA (1) CA972263A (en)
DE (1) DE2230618A1 (en)
FR (1) FR2145459A1 (en)
GB (1) GB1327567A (en)
IT (1) IT948365B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013226533A1 (en) * 2013-12-18 2015-06-18 MAHLE Behr GmbH & Co. KG Cleaner for an aluminum component and a process for cleaning aluminum components

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013226533A1 (en) * 2013-12-18 2015-06-18 MAHLE Behr GmbH & Co. KG Cleaner for an aluminum component and a process for cleaning aluminum components

Also Published As

Publication number Publication date
CA972263A (en) 1975-08-05
BE782061A (en) 1972-07-31
IT948365B (en) 1973-05-30
DE2230618A1 (en) 1973-01-25
FR2145459A1 (en) 1973-02-23

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees