US1957354A - Process of protecting light metals against corrosion - Google Patents

Process of protecting light metals against corrosion Download PDF

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Publication number
US1957354A
US1957354A US607670A US60767032A US1957354A US 1957354 A US1957354 A US 1957354A US 607670 A US607670 A US 607670A US 60767032 A US60767032 A US 60767032A US 1957354 A US1957354 A US 1957354A
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US
United States
Prior art keywords
light metals
against corrosion
protecting light
metals against
fluoride
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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 - Lifetime
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US607670A
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English (en)
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Prier Pierre
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Individual
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Individual
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Publication of US1957354A publication Critical patent/US1957354A/en
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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
    • C23C22/68—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 solutions with pH between 6 and 8

Definitions

  • the present invention has for its objecta process allowing to form a protecting layer, very resistant to corrosion, on aluminiumymagnesium and their alloys.
  • An extremely satisfactory protection is obtained according to the present process by causing to react, on parts formed of light metals or alloys, an aqueous solution of one or more complex neutral soluble salts, the anion of which compulsorily comprises the fluorine element combined with one or more other elements, the cathion being of any nature, but one of the constituent elements of the salt being placed above aluminium in the se- 20 ries of electro-chemical potentials.
  • the rapidity and efiiciency of the reaction increase with the temperature and reach their maximum at boiling point.
  • the duration of treatment of the metal with the bath is substantially of to minutes. It can be prolongated until the end of the reaction.
  • Protecting coatings obtained in such baths have a high resistance to the usual oxidation agents and in particular to the saline mist and to the saline solution of perhydrol.
  • the parts treated according to this process are preferably subsequently coated with another protecting layer which can be composed of greases, oils, waxes, gums, tar, etc.
  • the present process is not limited to the above mentioned conditions and the quality and aspect of the protecting layer can be varied by modifying the concentration of the bath, or the temperature or duration of treatment, etc.
  • Process for the formation of coatings for preventing the oxidation on articles made of light metals or alloys such as aluminum, magnesium which consists in immersing the said articles in a solution comprising about 2 parts of double fluoride of potassium and titanium, 1 part of chromium fluoride and A; part of fluoride of sodium for 1000 parts of water.

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  • 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)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
US607670A 1931-04-27 1932-04-26 Process of protecting light metals against corrosion Expired - Lifetime US1957354A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR732230T 1931-04-27

Publications (1)

Publication Number Publication Date
US1957354A true US1957354A (en) 1934-05-01

Family

ID=9121175

Family Applications (1)

Application Number Title Priority Date Filing Date
US607670A Expired - Lifetime US1957354A (en) 1931-04-27 1932-04-26 Process of protecting light metals against corrosion

Country Status (4)

Country Link
US (1) US1957354A (enrdf_load_stackoverflow)
BE (1) BE388139A (enrdf_load_stackoverflow)
FR (1) FR732230A (enrdf_load_stackoverflow)
GB (1) GB392728A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE764929C (de) * 1938-11-09 1954-04-05 Bosch Gmbh Robert Verfahren zum Erzeugen von fluoridhaltigen Schutzschichten auf Werkstuecken aus Magnesium und seinen Legierungen
US2836525A (en) * 1956-05-18 1958-05-27 American Chem Paint Co Method of and composition for coating zirconium
US2851385A (en) * 1952-04-03 1958-09-09 Amchem Prod Process and composition for coating aluminum surfaces
US2946728A (en) * 1955-06-23 1960-07-26 Cleveland Pneumatic Ind Inc Adherent electroplating on titanium
US2955061A (en) * 1957-08-02 1960-10-04 Parker Rust Proof Co Fluoride coating on zirconium
US3090709A (en) * 1953-08-10 1963-05-21 Lubrizol Corp Phosphate coating of metals
EP1318212A1 (de) * 2001-11-07 2003-06-11 Henkel Kommanditgesellschaft auf Aktien Mittel und Verfahren zur Oberflächenbehandlung von Überzügen auf Zinkbasis

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE750367C (de) * 1936-02-26 1945-01-16 Verfahren zur Erzeugung von korrosionsfesten UEberzuegen auf Magnesium und seinen Legierungen
US2431595A (en) * 1942-08-06 1947-11-25 Aluminum Co Of America Method for cleaning aluminum
US4148670A (en) * 1976-04-05 1979-04-10 Amchem Products, Inc. Coating solution for metal surface

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE764929C (de) * 1938-11-09 1954-04-05 Bosch Gmbh Robert Verfahren zum Erzeugen von fluoridhaltigen Schutzschichten auf Werkstuecken aus Magnesium und seinen Legierungen
US2851385A (en) * 1952-04-03 1958-09-09 Amchem Prod Process and composition for coating aluminum surfaces
DE977586C (de) * 1952-04-03 1967-06-08 Amchem Prod Verfahren zur Erzeugung von UEberzuegen auf Aluminium und dessen Legierungen
US3090709A (en) * 1953-08-10 1963-05-21 Lubrizol Corp Phosphate coating of metals
US2946728A (en) * 1955-06-23 1960-07-26 Cleveland Pneumatic Ind Inc Adherent electroplating on titanium
US2836525A (en) * 1956-05-18 1958-05-27 American Chem Paint Co Method of and composition for coating zirconium
US2955061A (en) * 1957-08-02 1960-10-04 Parker Rust Proof Co Fluoride coating on zirconium
EP1318212A1 (de) * 2001-11-07 2003-06-11 Henkel Kommanditgesellschaft auf Aktien Mittel und Verfahren zur Oberflächenbehandlung von Überzügen auf Zinkbasis

Also Published As

Publication number Publication date
BE388139A (enrdf_load_stackoverflow)
FR732230A (fr) 1932-09-15
GB392728A (en) 1933-05-25

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