GB1015563A - Process for increasing the corrosion resistance of aluminium and aluminium-alloy surfaces - Google Patents

Process for increasing the corrosion resistance of aluminium and aluminium-alloy surfaces

Info

Publication number
GB1015563A
GB1015563A GB26573/64A GB2657364A GB1015563A GB 1015563 A GB1015563 A GB 1015563A GB 26573/64 A GB26573/64 A GB 26573/64A GB 2657364 A GB2657364 A GB 2657364A GB 1015563 A GB1015563 A GB 1015563A
Authority
GB
United Kingdom
Prior art keywords
aluminium
rinsed
ions
rinsing
disilicate
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
GB26573/64A
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.)
Pyrene Co Ltd
Original Assignee
Pyrene Co Ltd
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 Pyrene Co Ltd filed Critical Pyrene Co Ltd
Publication of GB1015563A publication Critical patent/GB1015563A/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

Abstract

A green chromate coating formed on an aluminium or aluminium alloy surface by treating the surface with an aqueous acidic solution containing hexavalent chromium ions, phosphate ions, and fluoride ions is rinsed with an aqueous solution having a pH from 9-13. The alkaline substance may be an alkali metal, ammonium or alkaline earth metal compound or a condensed phosphate. Sodium carbonate, hydroxide, disilicate or zincate and aluminates, and stannates are also described. An ionic or non-ionic wetting agent, e.g. dodecylbenzenesulphonates, fatty alcohol sulphates, and condensation products of alkylene oxides with fatty alcohols, fatty acids, alkylphenols and alkylamines may be added to the rinsing solution. In an example the chromate coating is formed by dipping for 3 minutes at 50 DEG C. in a bath containing 7.8 g./l. CrO3, 17.0 g./l. P2O5, and 1.5 g./l. F, and after rinsing with water, the coating is rinsed at 70 DEG C. for 1 minute with a solution containing (parts by weight) 3 of anhydrous sodium carbonate and 1 of sodium disilicate. The surface may be finally rinsed with water.
GB26573/64A 1963-06-27 1964-06-26 Process for increasing the corrosion resistance of aluminium and aluminium-alloy surfaces Expired GB1015563A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM57327A DE1277646B (en) 1963-06-27 1963-06-27 Process for increasing the corrosion resistance of surfaces made of aluminum and aluminum alloys

Publications (1)

Publication Number Publication Date
GB1015563A true GB1015563A (en) 1966-01-05

Family

ID=7308879

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26573/64A Expired GB1015563A (en) 1963-06-27 1964-06-26 Process for increasing the corrosion resistance of aluminium and aluminium-alloy surfaces

Country Status (8)

Country Link
US (1) US3391032A (en)
AT (1) AT251996B (en)
BE (1) BE643037A (en)
CH (1) CH448676A (en)
DE (1) DE1277646B (en)
GB (1) GB1015563A (en)
NL (1) NL6406871A (en)
SE (1) SE304896B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2180263A (en) * 1985-09-05 1987-03-25 Nihon Parkerizing Chromating solutions
US6656606B1 (en) 2000-08-17 2003-12-02 The Westaim Corporation Electroplated aluminum parts and process of production
EP1767673A3 (en) * 2005-09-21 2007-05-30 Rasselstein GmbH Process for the reduction of the friction coefficient of coated metal strips and apparatus for applying a metallic coating to a steel strip.

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3395053A (en) * 1964-11-17 1968-07-30 Nasa Usa Thermal control coating
US3477882A (en) * 1965-12-13 1969-11-11 Lubrizol Corp Method of and composition for preventing "white rust" formation
US3493441A (en) * 1967-08-25 1970-02-03 Hooker Chemical Corp Detoxification of hexavalent chromium containing coating on a metal surface
CH584762A5 (en) * 1973-05-17 1977-02-15 Alusuisse
US3989550A (en) * 1975-04-21 1976-11-02 Amchem Products, Inc. Method of forming a hydrophilic coating on an aluminum surface
US4462842A (en) * 1979-08-13 1984-07-31 Showa Aluminum Corporation Surface treatment process for imparting hydrophilic properties to aluminum articles
DE4031817A1 (en) * 1990-10-08 1992-04-09 Henkel Kgaa METHOD FOR PASSIVATING POST-TREATMENT OF PHOSPHATED METAL SURFACES
US6027579A (en) * 1997-07-07 2000-02-22 Coral Chemical Company Non-chrome rinse for phosphate coated ferrous metals
US7815751B2 (en) * 2005-09-28 2010-10-19 Coral Chemical Company Zirconium-vanadium conversion coating compositions for ferrous metals and a method for providing conversion coatings

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2120212A (en) * 1936-01-10 1938-06-07 Curtin Howe Corp Phosphated metal coating
US2438877A (en) * 1945-09-06 1948-03-30 American Chem Paint Co Composition for and method of coating aluminum
US2634224A (en) * 1949-12-22 1953-04-07 Underwood Corp Brightening and passivating solution
US2927874A (en) * 1958-08-14 1960-03-08 Turco Products Inc Process for producing aluminum surface coatings
NL131372C (en) * 1961-03-15
FR1379534A (en) * 1963-06-27 1964-11-20 Parker Ste Continentale Process for increasing the corrosion resistance of aluminum or aluminum alloy surfaces

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2180263A (en) * 1985-09-05 1987-03-25 Nihon Parkerizing Chromating solutions
GB2180263B (en) * 1985-09-05 1989-08-16 Nihon Parkerizing Processes for treating zinc surfaces
US6656606B1 (en) 2000-08-17 2003-12-02 The Westaim Corporation Electroplated aluminum parts and process of production
US6692630B2 (en) 2000-08-17 2004-02-17 The Westaim Corporation Electroplated aluminum parts and process for production
EP1767673A3 (en) * 2005-09-21 2007-05-30 Rasselstein GmbH Process for the reduction of the friction coefficient of coated metal strips and apparatus for applying a metallic coating to a steel strip.

Also Published As

Publication number Publication date
BE643037A (en) 1964-05-15
DE1277646B (en) 1968-09-12
NL6406871A (en) 1964-12-28
CH448676A (en) 1967-12-15
US3391032A (en) 1968-07-02
SE304896B (en) 1968-10-07
AT251996B (en) 1967-01-25

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