GB614671A - Improvements in or relating to the formation of oxide coatings on aluminium surfaces - Google Patents

Improvements in or relating to the formation of oxide coatings on aluminium surfaces

Info

Publication number
GB614671A
GB614671A GB21635/46A GB2163546A GB614671A GB 614671 A GB614671 A GB 614671A GB 21635/46 A GB21635/46 A GB 21635/46A GB 2163546 A GB2163546 A GB 2163546A GB 614671 A GB614671 A GB 614671A
Authority
GB
United Kingdom
Prior art keywords
polyvinyl alcohol
per cent
oxide coatings
relating
formation
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
GB21635/46A
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.)
Howmet Aerospace Inc
Original Assignee
Aluminum Company of America
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 Aluminum Company of America filed Critical Aluminum Company of America
Publication of GB614671A publication Critical patent/GB614671A/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
    • C23C22/60—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 alkaline aqueous solutions with pH greater than 8
    • C23C22/66—Treatment of aluminium or alloys based thereon
    • C23C22/67—Treatment of aluminium or alloys based thereon with solutions containing hexavalent chromium
    • 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
    • C23C22/60—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 alkaline aqueous solutions with pH greater than 8
    • C23C22/66—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)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

Oxide coatings are formed on the surface of aluminium and aluminium alloys by treating them with an aqueous solution containing 0.5-6.0 per cent by weight of alkali metal carbonate and 0.2-5.0 of polyvinyl alcohol. When the solution contains only 0.2-3.0 of polyvinyl alcohol it may also contain 0.05-0.5 per cent of alkali metal chromate. Preferably the carbonate content is at least equal to the polyvinyl alcohol content. The oxide coating may be treated with hot sulphonated castor oil followed by a 15-minute treatment in 5 per cent sodium chromate solution.
GB21635/46A 1945-02-15 1946-07-19 Improvements in or relating to the formation of oxide coatings on aluminium surfaces Expired GB614671A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US578134A US2464596A (en) 1945-02-15 1945-02-15 Chemical method of coating aluminum

Publications (1)

Publication Number Publication Date
GB614671A true GB614671A (en) 1948-12-20

Family

ID=24311580

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21635/46A Expired GB614671A (en) 1945-02-15 1946-07-19 Improvements in or relating to the formation of oxide coatings on aluminium surfaces

Country Status (7)

Country Link
US (1) US2464596A (en)
BE (1) BE474285A (en)
CH (1) CH264921A (en)
DE (1) DE810097C (en)
ES (1) ES179130A1 (en)
FR (1) FR948260A (en)
GB (1) GB614671A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2504434A (en) * 1947-01-28 1950-04-18 Aluminum Co Of America Forming oxide coatings on aluminum
US2573320A (en) * 1949-03-18 1951-10-30 Pyrene Mfg Co Fire extinguisher
DE961587C (en) * 1951-06-28 1957-04-11 Basf Ag Process for the production of a dense oxide coating on objects made of aluminum or aluminum alloys
US3073760A (en) * 1959-05-05 1963-01-15 Kaiser Aluminium Chem Corp Sealing of anodized coatings
NL298106A (en) * 1960-10-10 1900-01-01
US4512818A (en) * 1983-05-23 1985-04-23 Shipley Company Inc. Solution for formation of black oxide

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1946150A (en) * 1931-05-15 1934-02-06 Aluminum Co Of America Coating of aluminum
DE655700C (en) * 1935-01-08 1938-01-21 Max Schenk Dr Process for the production of opaque, enamel-like protective layers on aluminum and its alloys
US2129071A (en) * 1935-10-31 1938-09-06 Addressograph Multigraph Planographic printing plate
US2171545A (en) * 1936-06-12 1939-09-05 Aluminum Co Of America Protective coating for aluminum and its alloys
US2137988A (en) * 1936-10-21 1938-11-22 Heresite & Chemical Company Adherent aluminum compound
US2279252A (en) * 1937-12-23 1942-04-07 Aluminum Co Of America Treating aluminum surfaces

Also Published As

Publication number Publication date
US2464596A (en) 1949-03-15
BE474285A (en) 1900-01-01
FR948260A (en) 1949-07-27
DE810097C (en) 1951-09-03
CH264921A (en) 1949-11-15
ES179130A1 (en) 1947-10-01

Similar Documents

Publication Publication Date Title
GB614671A (en) Improvements in or relating to the formation of oxide coatings on aluminium surfaces
GB433484A (en) Improvements in or relating to the production of bright aluminium surfaces
GB381402A (en) Improvements in or relating to the surface treatment of aluminium or aluminium alloys
GB655079A (en) Improvements in or relating to the production of phosphate coatings
GB615110A (en) Improvements in and relating to cleaning and electro-plating processes
GB643512A (en) Improvements in or relating to coating compositions
GB597754A (en) Process for treating ferrous sheets and other ferrous articles
GB395491A (en) A process for preventing the tarnishing of the surface of silver and its alloys
GB414966A (en) Anodic coating of zinc base metals
GB637249A (en) Improvements relating to the production of protective or paint-holding coatings on aluminium or aluminium alloys
GB705527A (en) Process for coating metal objects
GB1090309A (en) Processes for cleaning and coating metal surfaces
GB601736A (en) Improvements in and relating to the production of protective coatings on aluminium-alloy surfaces
GB680435A (en) Improvements in or relating to the treatment of zinc surfaces
SU94408A1 (en) Alumination of iron products by immersion in molten aluminum or its alloys
GB652794A (en) Improvements in or relating to the coating of metals with metals by dipping
GB738004A (en) Improvements relating to the production of phosphate coatings on metals
GB673638A (en) Improvements relating to the formation of phosphate coatings on metal surfaces
GB535199A (en) Improvements in or relating to the production of transparent oxide coatings on aluminium or aluminium alloys
GB794294A (en) Process for the production of oxalate coatings on ferrous metals
GB571307A (en) Improvements relating to protective treatment for metal surfaces
GB615848A (en) Process of providing magnesium and its alloys with a protective surface coating against corrosion
GB606240A (en) Improvements in the treatment of the surfaces of articles made of aluminium or its alloys
GB595596A (en) Improvements in and relating to the blackening of copper and copper alloy surfaces
GB589887A (en) Improvements in or relating to the protective surface treatment of articles made of or coated with zinc, zinc alloys, cadmium or cadmium alloys