GB891910A - Improvements in or relating to the application of chemically-bonded coatings to the surface of aluminium - Google Patents

Improvements in or relating to the application of chemically-bonded coatings to the surface of aluminium

Info

Publication number
GB891910A
GB891910A GB28669/59A GB2866959A GB891910A GB 891910 A GB891910 A GB 891910A GB 28669/59 A GB28669/59 A GB 28669/59A GB 2866959 A GB2866959 A GB 2866959A GB 891910 A GB891910 A GB 891910A
Authority
GB
United Kingdom
Prior art keywords
aluminium
per litre
solution
grams per
expressed
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
GB28669/59A
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.)
Henkel Corp
Original Assignee
Amchem Products Inc
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 Amchem Products Inc filed Critical Amchem Products Inc
Publication of GB891910A publication Critical patent/GB891910A/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
    • C23C22/37—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 containing also hexavalent chromium compounds
    • C23C22/38—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 containing also hexavalent chromium compounds containing also phosphates
    • 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
    • C23C22/86—Regeneration of coating baths

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)
  • Glass Compositions (AREA)

Abstract

The coating of aluminium using an aqueous solution containing from 0,15-12,5 grams per litre of fluoride iron, from 2-60 grams per litre of hexavalent chromium (expressed as CrO3) and from 2-285 grams per litre of phosphate (expressed as PO4), and having a pH of 0,8-4,5, is controlled so as to ensure production of powder free coatings over a prolonged period by contacting the solution intermittently or continuously with a cation exchange resin to which there is also added both potassium and sodium in amounts such that aluminium dissolved in the solution in excess of 1 gram per litre is precipitated. Sodium and potassium fluorides are added in a molar ratio of as near 2 as possible, intermittently, whenever the concentration of dissolved aluminium approaches or exceeds 1 gram per litre, in the minimum amount necessary to precipitate the aluminium. The contact with ion exchange resin may be maintained by continuously withdrawing a portion of the solution, passing it over the resin and returning it. Specifications 632,097, 632,102, 708,937, 803,405, 832,485 and 851,027 are referred to.
GB28669/59A 1958-09-24 1959-08-21 Improvements in or relating to the application of chemically-bonded coatings to the surface of aluminium Expired GB891910A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US762932A US2909455A (en) 1958-09-24 1958-09-24 Method of coating a succession of aluminum surfaces

Publications (1)

Publication Number Publication Date
GB891910A true GB891910A (en) 1962-03-21

Family

ID=25066445

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28669/59A Expired GB891910A (en) 1958-09-24 1959-08-21 Improvements in or relating to the application of chemically-bonded coatings to the surface of aluminium

Country Status (4)

Country Link
US (1) US2909455A (en)
DE (1) DE1247116B (en)
FR (1) FR1236376A (en)
GB (1) GB891910A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3377212A (en) * 1966-10-14 1968-04-09 Amchem Prod Method for coating tortuous aluminum shapes
US4131489A (en) * 1978-03-31 1978-12-26 Amchem Products, Inc. Chromate conversion composition and method for coating aluminum using low concentrations of chromate, phosphate and fluoride ions
WO2001032955A1 (en) * 1998-05-07 2001-05-10 Alcoa Inc. Coating an aluminum alloy substrate

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL248160A (en) * 1959-02-09
US3015594A (en) * 1959-10-23 1962-01-02 Parker Rust Proof Co Phosphate coating process
GB851027A (en) * 1959-12-17 1960-10-12 Amchem Prod Improvements in or relating to the application of chemically-bonded coatings to the surface of aluminium
US3061484A (en) * 1960-08-04 1962-10-30 Amchem Prod Method of controlling the aluminum content of aqueous acid aluminum coating solutions
US3140245A (en) * 1961-08-23 1964-07-07 Gallaccio Anthony Dulling hard aluminum oxide coatings on aluminum-rich basis metals
US3331710A (en) * 1963-08-23 1967-07-18 Hooker Chemical Corp Method for coating aluminum
JPS5336819B2 (en) * 1974-08-23 1978-10-05
DE4029956A1 (en) * 1990-09-21 1992-03-26 Metallgesellschaft Ag PHOSPHATING PROCESS
DE4434907A1 (en) * 1994-09-29 1996-04-04 Chemal Katschmareck Gmbh & Co Chromating bath for aluminium alloys

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438877A (en) * 1945-09-06 1948-03-30 American Chem Paint Co Composition for and method of coating aluminum
US2494908A (en) * 1947-02-07 1950-01-17 American Chem Paint Co Method of coating ferriferous metals and zinciferous metals
BE515458A (en) * 1951-11-12
US2777785A (en) * 1953-07-30 1957-01-15 Heintz Mfg Co Composition for and method of treating metals as well as the treated product

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3377212A (en) * 1966-10-14 1968-04-09 Amchem Prod Method for coating tortuous aluminum shapes
US4131489A (en) * 1978-03-31 1978-12-26 Amchem Products, Inc. Chromate conversion composition and method for coating aluminum using low concentrations of chromate, phosphate and fluoride ions
WO2001032955A1 (en) * 1998-05-07 2001-05-10 Alcoa Inc. Coating an aluminum alloy substrate

Also Published As

Publication number Publication date
DE1247116B (en) 1967-08-10
US2909455A (en) 1959-10-20
FR1236376A (en) 1960-07-15

Similar Documents

Publication Publication Date Title
GB891910A (en) Improvements in or relating to the application of chemically-bonded coatings to the surface of aluminium
GB596876A (en) Method of improving the adherence of siccative coatings to ferrous metal surfaces
GB767888A (en) Method of and materials for the surface treatment of aluminium and its alloys
GB673677A (en) Improvements in or relating to a method of and composition for coating aluminium andaluminium alloys
ES316546A1 (en) A procedure for the production of coatings of phosphates on ferriferral metal surfaces. (Machine-translation by Google Translate, not legally binding)
GB846363A (en) Improvements relating to the formation of chromate coatings on surfaces of aluminium and aluminium alloys
ES470870A1 (en) Process for the production of tenside-containing cation exchanger aluminosilicates
GB792739A (en) Methods and materials for the deoxidation of aluminium surfaces
GB957379A (en) Solutions and processes for the production of phosphate coatings on zinc metal surfaces
ES401733A1 (en) Method for applying a phosphate coating to iron and steel
GB655079A (en) Improvements in or relating to the production of phosphate coatings
GB986455A (en) Improvements relating to the chromating of aluminium surfaces
GB840302A (en) Improvements relating to the formation of chromate coatings on metal surfaces
GB1128369A (en) Improvements in or relating to protective coatings
GB764385A (en) Process for treating steel, zinc and aluminium to increase corrosion resistance
GB604325A (en) Improvements relating to the production of phosphate coatings ferrous surfaces
GB990352A (en) Improvements relating to the chromating of aluminium
GB751189A (en) Process for enhancing the corrosion resistance of aluminium surfaces
GB599784A (en) Improvements in or relating to processes for the production of protective coatings on metal surfaces
GB984055A (en) Anti-corrosion product
GB889322A (en) Improvements relating to the chromating of zinc and cadmium
GB927814A (en) Improvements in or relating to the production of chemical conversion coatings upon aluminium and its alloys
GB985369A (en) Chlorate accelerated zinc phosphate baths with added arsenate
GB893771A (en) Improvements in processes for the production of chemical conversion coatings upon aluminium and its alloys
GB783749A (en) Improvements in or relating to the production of phosphate coatings on metals