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GB393996A - Improvements in or relating to the surface treatment of aluminium or aluminium alloys - Google Patents

Improvements in or relating to the surface treatment of aluminium or aluminium alloys

Info

Publication number
GB393996A
GB393996A GB3500931A GB3500931A GB393996A GB 393996 A GB393996 A GB 393996A GB 3500931 A GB3500931 A GB 3500931A GB 3500931 A GB3500931 A GB 3500931A GB 393996 A GB393996 A GB 393996A
Authority
GB
United Kingdom
Prior art keywords
aluminium
corrosion
coating
oxide
solution
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
GB3500931A
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.)
ROBERT SECREST DUNHAM
Original Assignee
ROBERT SECREST DUNHAM
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 ROBERT SECREST DUNHAM filed Critical ROBERT SECREST DUNHAM
Priority to GB3500931A priority Critical patent/GB393996A/en
Publication of GB393996A publication Critical patent/GB393996A/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
    • C23C22/82—After-treatment
    • C23C22/83—Chemical after-treatment

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

To protect aluminium or aluminium alloys from corrosion an adsorptive oxide coating is formed on the surface by chemical or electrochemical reaction and a water-soluble corrosion-inhibiting substance is then adsorbed in the coating, for example by treating the oxide-coated metal with a solution of chromic acid, a chromate, a dichromate, or a soluble silicate. The oxide coating is preferably prepared either anodically in a sulphuric acid electrolyte or by chemical reaction in a hot solution of sodium carbonate and an alkali dichromate. The use of phosphoric acid and its salts is also referred to. The oxide-coated metal, after being washed, may be immersed in a solution of the corrosion-inhibiting substance or may be made the anode in an electrolytic cell with the solution as electrolyte, and the impregnated coating is then dried. The coating of aluminium-silicon alloy spandrels is described. The coated surface may be used as a base for paint, e.g. aluminium paint, or lacquer. A corrosion-inhibiting substance is defined as a substance which prevents corrosion, when adsorbed in the oxide coating, by chemical action with the underlying metal.
GB3500931A 1931-12-17 1931-12-17 Improvements in or relating to the surface treatment of aluminium or aluminium alloys Expired GB393996A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3500931A GB393996A (en) 1931-12-17 1931-12-17 Improvements in or relating to the surface treatment of aluminium or aluminium alloys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3500931A GB393996A (en) 1931-12-17 1931-12-17 Improvements in or relating to the surface treatment of aluminium or aluminium alloys

Publications (1)

Publication Number Publication Date
GB393996A true GB393996A (en) 1933-06-19

Family

ID=10372706

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3500931A Expired GB393996A (en) 1931-12-17 1931-12-17 Improvements in or relating to the surface treatment of aluminium or aluminium alloys

Country Status (1)

Country Link
GB (1) GB393996A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2907689A (en) * 1949-10-24 1959-10-06 Calvin P Kidder Method of controlling corrosion in a neutronic reactor
DE102007057777A1 (en) * 2007-11-30 2009-06-04 Erbslöh Ag Component of aluminum and / or an aluminum alloy with a very high corrosion resistance and method for its production

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2907689A (en) * 1949-10-24 1959-10-06 Calvin P Kidder Method of controlling corrosion in a neutronic reactor
DE102007057777A1 (en) * 2007-11-30 2009-06-04 Erbslöh Ag Component of aluminum and / or an aluminum alloy with a very high corrosion resistance and method for its production
DE102007057777B4 (en) * 2007-11-30 2012-03-15 Erbslöh Ag Method for producing a component from aluminum and / or an aluminum alloy and use of the method

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