CA2277067A1 - An electrolytic process for forming a mineral containing coating - Google Patents

An electrolytic process for forming a mineral containing coating Download PDF

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Publication number
CA2277067A1
CA2277067A1 CA002277067A CA2277067A CA2277067A1 CA 2277067 A1 CA2277067 A1 CA 2277067A1 CA 002277067 A CA002277067 A CA 002277067A CA 2277067 A CA2277067 A CA 2277067A CA 2277067 A1 CA2277067 A1 CA 2277067A1
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CA
Canada
Prior art keywords
metal surface
containing medium
silicate containing
silicate
medium
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.)
Granted
Application number
CA002277067A
Other languages
French (fr)
Other versions
CA2277067C (en
Inventor
Robert L. Heimann
William M. Dalton
John Hahn
David M. Price
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Accuride Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2277067A1 publication Critical patent/CA2277067A1/en
Application granted granted Critical
Publication of CA2277067C publication Critical patent/CA2277067C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
    • C23C28/324—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal matrix material layer comprising a mixture of at least two metals or metal phases or a metal-matrix material with hard embedded particles, e.g. WC-Me
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D9/00—Electrolytic coating other than with metals
    • C25D9/04—Electrolytic coating other than with metals with inorganic materials

Abstract

The disclosure relates to a process for forming a deposit on the surface of a metallic or conductive surface. The process employs an electrolytic process to deposit a mineral containing coating or film upon a metallic or conductive surface.

Claims (22)

1. A catholic electrically enhanced method for firming a corrosion resistant surface on a metal surface comprising:
contacting the metal surface with an aqueous silicate containing medium, passing a current through said surface and medium at a rate sufficient to evolve hydrogen tom said medium and for a period of time sufficient to form a mineral upon the surface wherein said mineral comprises crystals embedded within an amorphous matrix said said mineral imparts improved corrosion resistance to said surface.
2. A catholic method for improving the corrosion resistance of an electrically conductive surface comprising:
immersing the metal surface within an alkali silicate containing medium, passing a current through said surface and medium wherein said metal surface reacts with a portion of the metal surface to form a mineral layer comprising crystals embedded within an amorphous matrix and having improved corrosion resistance in comparison to the metal surface.
3. A catholic method for improving the corrosion resistance of metal surface comprising:
exposing the metal surface to an aqueous silicate containing medium, establishing an electroylitic environment wherein the surface is employed as a cathode, passing a current through the silicate medium and the surface at a rate sufficient to evolve hydrogen from said medium and far a period of time and under conditions sufficient to form a corrosion resistant surface upon the metal surface wherein said corrosion resistant surface comprises a mineral.
4. The method of Claim 1, 2 or 3 wherein the silicate containing medium comprises sodium silicate.
5. The method of Claim 1, 2 or 3 wherein the metal surface comprises at least one member selected from the group consisting of lead, copper, zinc, aluminum and steel.
6. The method of Claim 1, 2 or 3 wherein the metal surface comprises at least one member selected from the group consisting of galvanized metal, zinc, iron, steel, brass, copper, nickel, tin, aluminum, lead, cadmium, magnesium and alloys thereof.
7. The method of Claim 1, 2 or 3 wherein said metal surfaces comprises zinc.
8. The method of Claim 1, 2 or 3 further comprising anodically cleaning the metal surface prior to forming said mineral.
9. The method of Claim 1, 2 or 3 wherein said passing is performed at a voltage greater than 6V
10. The method of Claim 1, 2 or 3 wherein the surface as an ASTM B-117 exposure time of greater than 2 hours.
11. The method of Claim 1, 2 or 3 wherein the silicate containing medium comprises heater than 5 wt.% of at least one alkali silicate.
12. The method of Claim 1, 2 or 3 wherein said silicate containing medium comprises silica and at least one silicate.
13. The method of Claim 1, 2 or 3 wherein said silicate containing medium is substantially solvent free.
14. The method of Claim 1, 2 or 3 wherein the silicate containing medium comprises at least one member from the group consisting of a fluid bath, gel or spray.
15. The method of Claim 1, 2 or 3 wherein the silicate containing medium further comprises at least one dopant.
16. The method of Claim 1, 2 or 3 wherein the silicate containing medium further comprises at least one water dispersible polymer.
17. The method of Claim 16 wherein said polymer comprises polyurethane.
18. The method of Claim 15 wherein the dopant comprises the anode of the electrolytic environment.
19. The method of Claim 1, 2 or 3 further comprising applying a secondary coating.
20. The method of Claim 1, 2 or 3 wherein said passing is acheived by direct current (DC).
21. The method of Claim 15 wherein said dopant comprises at least one member selected from the group consisting of water soluble salts and oxides of tungsten, molybdenum, chromium, titanium, zirconium, vanadium, phosphorus, aluminum, iron, boron, bismuth, gallium, tellurium, germanium, antimony, niobium, magnesium and manganese.
22. The method of Claim 15 or 18 wherein said dopant comprises at least one of iron and aluminum.
CA2277067A 1997-01-31 1998-01-30 An electrolytic process for forming a mineral containing coating Expired - Lifetime CA2277067C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US3602497P 1997-01-31 1997-01-31
US60/036,024 1997-01-31
US4544697P 1997-05-02 1997-05-02
US60/045,446 1997-05-02
PCT/US1998/001682 WO1998033960A1 (en) 1997-01-31 1998-01-30 An electrolytic process for forming a mineral containing coating
US09/016,250 1998-01-30
US09/016,250 US6149794A (en) 1997-01-31 1998-01-30 Method for cathodically treating an electrically conductive zinc surface

Publications (2)

Publication Number Publication Date
CA2277067A1 true CA2277067A1 (en) 1998-08-06
CA2277067C CA2277067C (en) 2010-01-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2277067A Expired - Lifetime CA2277067C (en) 1997-01-31 1998-01-30 An electrolytic process for forming a mineral containing coating

Country Status (6)

Country Link
US (2) US6149794A (en)
EP (1) EP0958410B1 (en)
AT (1) ATE326561T1 (en)
CA (1) CA2277067C (en)
DE (1) DE69834548T2 (en)
WO (1) WO1998033960A1 (en)

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Also Published As

Publication number Publication date
US6258243B1 (en) 2001-07-10
ATE326561T1 (en) 2006-06-15
EP0958410A1 (en) 1999-11-24
US6149794A (en) 2000-11-21
DE69834548D1 (en) 2006-06-22
EP0958410B1 (en) 2006-05-17
DE69834548T2 (en) 2007-05-03
WO1998033960A1 (en) 1998-08-06
CA2277067C (en) 2010-01-26

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