US20060096674A1 - Method for coating the surface of a metallic material, device for carrying out said method - Google Patents

Method for coating the surface of a metallic material, device for carrying out said method Download PDF

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Publication number
US20060096674A1
US20060096674A1 US10/522,688 US52268805A US2006096674A1 US 20060096674 A1 US20060096674 A1 US 20060096674A1 US 52268805 A US52268805 A US 52268805A US 2006096674 A1 US2006096674 A1 US 2006096674A1
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Prior art keywords
coating
metal
strip
layer
equal
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Abandoned
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US10/522,688
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English (en)
Inventor
Patrick Choquet
Daniel Chaleix
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USINOR SA
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Individual
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Assigned to USINOR reassignment USINOR ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHALEIX, DANIEL, CHOQUET, PATRICK
Publication of US20060096674A1 publication Critical patent/US20060096674A1/en
Abandoned legal-status Critical Current

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    • 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
    • C23C28/322—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only
    • 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
    • C23C28/321—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 alloy layer
    • 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
    • C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
    • 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
    • C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
    • C23C28/3455—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer with a refractory ceramic layer, e.g. refractory metal oxide, ZrO2, rare earth oxides or a thermal barrier system comprising at least one refractory oxide layer

Definitions

  • the invention relates to the coating of metal surfaces. More precisely, it relates to processing operations for coating the surface of a metal material intended to confer a three-dimensional visual effect on the material.
  • a visual effect of this type can be achieved using holograms which are produced by recording and reproducing an image by means of two laser beams on a photosensitive medium which is capable of recording highly contrasting luminous interferences.
  • Media of this type are, for example, thermoplastic films, photopolymers, photosensitive films . . .
  • the object of the invention is to provide a method which allows three-dimensional visual effects to be produced on the surface of a metal material without a photosensitive medium having to be applied to the surface.
  • the subject-matter of the invention is a method for coating the surface of a metal material having a crystallographic structure, according to which the material is first coated with a layer of a metal or a metal alloy having a melting point equal to T f and a thickness less than or equal to 2.5 ⁇ m, characterised in that:
  • the first coating is subjected to thermal processing using a rapid heating means in order to bring the surface of the first coating to a temperature of between 0.8 T f and T f ;
  • a second coating is deposited from a metal or a metal alloy having a thickness less than or equal to 1 ⁇ m.
  • the first and second coatings have melting points less than or equal to 700° C.
  • the first and second coatings can be constituted by the same material.
  • a transparent mineral film is then deposited on the second coating.
  • the metal material to be coated can preferably be a carbon steel, a stainless steel, or aluminium or one of the alloys thereof.
  • the first coating can preferably be produced by means of electrodeposition or a physical vapour deposition method.
  • the rapid heating means can preferably be an infra-red heating device, an induction heating device, a device for discharge with plasma with a non-reactive gas or a device for ion bombardment with a non-reactive gas.
  • the second coating can preferably be produced by means of electrodeposition or a physical vapour deposition method.
  • the transparent mineral film can be deposited by means of a reactive plasma assisted chemical vapour deposition method.
  • the first and second coatings can each be constituted by tin and/or aluminium.
  • the mineral film can be constituted by a metal oxide or a mixture of metal oxides, preferably selected from the oxides of austenitic stainless steel, chromium, titanium, silicon, zinc, tin.
  • the metal material can be in the form of a moving strip and the various method steps can be carried out continuously by means of installations which are arranged successively over the path of the moving strip.
  • the invention also relates to a device for coating a metal material in the form of a strip, characterised in that it comprises means for moving the strip and, arranged successively over the path of the strip:
  • the device can comprise, downstream of the second means for coating the strip with a layer of a metal or a metal alloy, means for coating the strip with a transparent mineral film.
  • the invention also relates to a metal material, characterised in that it comprises, on at least one of the surfaces thereof, a metal coating which has a three-dimensional visual effect, the coating being formed directly on the surface of the material, and which is carried out in particular by the above method.
  • the invention consists in producing the desired three-dimensional visual effect using a series of operations for processing the surface of the metal material itself.
  • a multilayered coating is produced which cannot be separated from the metal material and which can be produced by the metal company which made the base material.
  • This coating in addition to the aesthetic qualities thereof, has a number of technical advantages and allows the manufacturer of the metal material to maintain complete control over the decoration process.
  • FIGS. 1 to 6 illustrate the appearances of various coatings produced by different variants of the method according to the invention.
  • the starting material is a metal material, such as a carbon steel, a stainless steel, aluminium or one of the alloys thereof, etcetera. It is, for example, in the form of a plate or a wound strip. In this last case, it is possible to carry out the processing operation which will be described by unwinding the strip and moving it continuously in an installation where the equipment which allows the various steps of the processing operation to be carried out is arranged successively over the path of the strip. In order to achieve the desired aesthetic effect, it is necessary for the metal material used as a substrate to have a crystallographic structure.
  • the surface of the material is conditioned in a manner known per se in order to remove any superficial contamination.
  • the first method step is the depositing of a first coating, constituted by a metal element (tin or aluminium, for example) or a metal alloy, preferably having a low melting point T f in the order of 700° C. or less.
  • This coating must have a thickness less than or equal to 2.5 ⁇ m.
  • the physical vapour deposition methods which can be used include conventionally known methods involving vacuum evaporation, magnetron sputtering, ion plating, self-induced ion plating.
  • the second method step is a thermal processing operation which is carried out on the first coating using a rapid heating means, such as infra-red lamps, an inductor, a plasma discharge operation, or ion bombardment with a non-reactive gas, such as an inert gas.
  • a rapid heating means such as infra-red lamps, an inductor, a plasma discharge operation, or ion bombardment with a non-reactive gas, such as an inert gas.
  • This thermal processing must bring the surface of the first coating to a temperature of between 0.8 T f and T f . So that it is effected with kinetics compatible with being carried out on a strip moving at a speed in the order of 100 m/mn, it is preferable for T f to be less than or equal to 700° C.
  • the third method step is the depositing of a second coating, from a metal element or an alloy which may or may not be identical to the material of the first coating.
  • This coating must have a thickness which does not exceed 1 ⁇ m. It can be produced using the same methods as the first coating.
  • the method can comprise a fourth step which consists in depositing a transparent mineral film on the second metal coating.
  • a transparent mineral film can be carried out by any known means for this purpose, the reactive plasma assisted chemical vapour deposition methods being particularly appropriate. If this film has a thickness less than or equal to 1 ⁇ m, a coloured coating can be produced by means of an interference effect of the mineral film. The colours green, yellow, blue, violet and red are accessible in this manner, in accordance with the refraction index of the material deposited.
  • this transparent film gives an appearance of additional depth to patterns having a three-dimensional appearance which are produced following the first three method steps.
  • the appearance of patterns on the surface of the substrate requires the substrate to have a crystallographic structure.
  • the nucleation of the solidification patterns of the metal deposits is produced on the basis of preferential sites at the surface of the substrate which exist only if the substrate has a crystallographic structure.
  • the size of the patterns produced depends on the quantity of energy used during the second method step and the thickness of the coating: the patterns will be larger as this quantity of energy and/or this thickness become(s) greater.
  • the use of a metal or alloy having a low melting point (700° C. or less) as a coating material during the first method step allows the metallurgical conversion of the coating to be carried out in a very short space of time during the second step.
  • the methods of heating which have been mentioned allow the necessary energy to be provided in the shortest possible time.
  • the method according to the invention has a number of advantages. As mentioned, it allows the manufacturer of metal products to maintain complete control over the method. Since the coating which produces the three-dimensional visual effect is an integral part of the medium in this case, there is no risk of it becoming separated during subsequent processing and handling operations. Furthermore, most particularly if the method is used in its entirety with four steps, the coating produced in this manner increases the resistance of the substrate to cosmetic corrosion. The coating also has a higher resistance to ultra-violet radiation and temperature. It is less sensitive to fingermarks. It has a high degree of superficial hardness which makes it less sensitive to scratches. It is easy to clean and effectively withstands maintenance products and other mechanical influences. Finally, it is possible, if the coating metal used is appropriate (for example, tin), to make the coating compatible with use in the field of foodstuffs.
  • the coating metal used is appropriate (for example, tin)
  • the sheet is coated with a layer of tin of 0.8 ⁇ m by means of magnetron sputtering in an atmosphere of argon at a pressure of 10 ⁇ 3 mbar (0.1 Pa).
  • the target current is 0.9 A and the target voltage is 450V.
  • the rate at which the tin is deposited is 0.25 ⁇ m/min.
  • the sheet is thermally processed using an argon plasma at a pressure of 10 ⁇ 3 mbar (0.1 Pa).
  • the energy conferred on the ions of argon is 400 eV and the quantity of ions received by the sheet is 4.7 ⁇ 10 22 ions Ar + /m 2 .
  • the sheet is placed as a cathode.
  • the surface of the tin is brought to a temperature in the order of 210° C.
  • a tin coating of 0.4 ⁇ m is deposited by means of magnetron sputtering, under the same experimental conditions as for the first coating.
  • a transparent film of silicon having a thickness of 0.1 ⁇ m is deposited by means of plasma CVD.
  • the depositing is carried out in an atmosphere composed of hexamethyldisiloxane (HMDSO) and oxygen at a pressure of 10 ⁇ 3 mbar (0.1 Pa), with a ratio of partial pressures of HMDSO and O 2 of 1/10.
  • a current is used having a frequency of 50 kHz at a power of 100W.
  • the depositing rate is 1.0 ⁇ m/min.
  • a coating is produced whose external appearance is illustrated in FIG. 1 , which coating has anti-corrosion and anti-fingermarking properties, is easy to clean and has a high degree of superficial hardness. It is capable of withstanding significant mechanical, chemical and thermal influences.
  • the sheet of steel is coated under conditions identical to those of example 1 for the first three steps.
  • the fourth step consists in producing a coloured film of titanium dioxide by means of reactive magnetron sputtering of a titanium target.
  • the thickness of the film is 0.05 ⁇ m.
  • the sheet of soft steel is coated under the same conditions as for example 2, with the exception that the thickness of the first deposit of tin is increased to 1.2 ⁇ m, and the quantity of ions received by the first layer of tin during the second method step is increased. In this case, this quantity reaches 9.4 ⁇ 10 22 ions Ar + /m 2 .
  • the surface of the tin is brought to a temperature in the order of 235° C. The result can be seen in FIG. 3 .
  • the sheet of soft steel is coated under the same conditions as for example 2, with the exception that, as for example 3, the quantity of ions received by the first layer is increased to 9.4 ⁇ 10 22 ions Ar + /m 2 , and the thickness of the titanium dioxide film is increased to 0.08 ⁇ m. The result can be seen in FIG. 4 .
  • the sheet is coated under identical conditions to those of example 1, with the exception that, for the second step, two infra-red lamps are used to heat the substrate and the first layer of tin thereof, and no oxide is deposited on the second layer of tin. Only the first three method steps are therefore carried out, those which are required to produce the desired three-dimensional visual effect.
  • the heating of the layer of tin is static and lasts for 8 minutes in a lamp-type furnace controlled at a temperature of 200° C. The result can be seen in FIG. 5 .
  • a very thin sheet of soft steel of 200 ⁇ 200 mm and 0.2 mm thick is coated with an electrodeposited layer of tin in such a manner as to produce a sheet of “tinplate” of the type conventionally used in the field of foodstuffs.
  • the second and third method steps according to the invention are then carried out under conditions identical to those of example 2.
  • the fourth optional processing step according to the invention is not carried out. The result can be seen in FIG. 6 .
  • the sheet is coated with a layer of aluminium of 0.6 ⁇ m by means of magnetron sputtering in an atmosphere of argon at a pressure of 10 ⁇ 3 mbar (0.1 Pa).
  • the target current is 1.8 A and the target voltage is 355V.
  • the rate at which the aluminium is deposited is 0.33 ⁇ m/min.
  • the sheet is thermally processed with an argon plasma at a pressure of 10 ⁇ 3 mbar (0.1 Pa).
  • the energy conferred on the argon ions is 280 eV and the quantity of ions is 18.4 ⁇ 10 22 ions Ar + /m 2 .
  • the sheet is placed as a cathode.
  • the surface of the sheet coated in aluminium is brought to a temperature of 615° C. at the end of the processing operation.
  • a coating of tin is deposited by means of magnetron sputtering under the same experimental conditions as those described in the third step of example 1.
  • the sheet of soft steel is coated with tin under the same conditions as for example 3 for the first two steps.
  • an aluminium coating is deposited by means of magnetron sputtering, under the same experimental conditions as those described in the first step of example 7, with the exception that the aluminium is deposited with a thickness of 0.4 ⁇ m.
  • the three-dimensional visual appearance is desired on only one surface or portions of the surface of the metal material, it is possible to protect the material using one or more covers which mask the zones which are not to be coated during the various processing operations to which they are subjected.

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Physical Vapour Deposition (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
US10/522,688 2002-08-05 2003-08-04 Method for coating the surface of a metallic material, device for carrying out said method Abandoned US20060096674A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR02/09952 2002-08-05
FR0209952A FR2843130B1 (fr) 2002-08-05 2002-08-05 Procede de revetement de la surface d'un materiau metallique, dispositif pour sa mise en oeuvre et produit ainsi obtenu
PCT/FR2003/002457 WO2004015169A2 (fr) 2002-08-05 2003-08-04 Procede de revetement de la surface d'un materiau metallique, dispositif pour sa mise en oeuvre et produit ainsi obtenu

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US20060096674A1 true US20060096674A1 (en) 2006-05-11

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US10/522,688 Abandoned US20060096674A1 (en) 2002-08-05 2003-08-04 Method for coating the surface of a metallic material, device for carrying out said method

Country Status (11)

Country Link
US (1) US20060096674A1 (fr)
EP (1) EP1527208A2 (fr)
JP (1) JP2005534812A (fr)
CN (1) CN1681966A (fr)
AU (1) AU2003274221A1 (fr)
BR (1) BR0313580A (fr)
CA (1) CA2495457A1 (fr)
FR (1) FR2843130B1 (fr)
PL (1) PL373077A1 (fr)
RU (1) RU2300579C2 (fr)
WO (1) WO2004015169A2 (fr)

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US10711339B2 (en) 2008-12-18 2020-07-14 Arcelormittal France Industrial vapor generator for depositing an alloy coating on a metal strip
US11674209B2 (en) 2017-12-19 2023-06-13 Arcelormittal Hot-dip coated steel substrate

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DE102012100509B4 (de) * 2012-01-23 2015-10-08 Thyssenkrupp Rasselstein Gmbh Verfahren zum Veredeln einer metallischen Beschichtung auf einem Stahlband
RU2584105C2 (ru) * 2012-02-14 2016-05-20 Ниппон Стил Энд Сумитомо Метал Корпорейшн Плакированная толстолистовая сталь для горячего прессования и способ горячего прессования плакированной толстолистовой стали
EP2831314B1 (fr) * 2012-03-30 2016-05-18 Tata Steel IJmuiden B.V. Substrat revêtu pour applications d'emballage et procédé de production dudit substrat revêtu
RU2515714C1 (ru) * 2012-11-19 2014-05-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВПО "НИУ "МЭИ", Московский энергетический институт, МЭИ Способ нанесения нанокомпозитного покрытия на поверхность стального изделия
DE102013105392A1 (de) * 2013-05-27 2014-11-27 Thyssenkrupp Rasselstein Gmbh Verfahren zur Beschichtung eines Stahlblechs mit einer Metallschicht

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10711339B2 (en) 2008-12-18 2020-07-14 Arcelormittal France Industrial vapor generator for depositing an alloy coating on a metal strip
US11674209B2 (en) 2017-12-19 2023-06-13 Arcelormittal Hot-dip coated steel substrate

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CN1681966A (zh) 2005-10-12
WO2004015169A3 (fr) 2004-05-13
PL373077A1 (en) 2005-08-08
RU2005106284A (ru) 2005-07-27
FR2843130A1 (fr) 2004-02-06
CA2495457A1 (fr) 2004-02-19
BR0313580A (pt) 2005-07-12
EP1527208A2 (fr) 2005-05-04
WO2004015169A2 (fr) 2004-02-19
AU2003274221A1 (en) 2004-02-25
RU2300579C2 (ru) 2007-06-10
FR2843130B1 (fr) 2004-10-29
AU2003274221A8 (en) 2004-02-25
JP2005534812A (ja) 2005-11-17

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