EP1979506A1 - Composition sans chrome (vi) pour proteger une surface metallique galvanisee de la corrosion, son procede de fabrication et poulie - Google Patents

Composition sans chrome (vi) pour proteger une surface metallique galvanisee de la corrosion, son procede de fabrication et poulie

Info

Publication number
EP1979506A1
EP1979506A1 EP06830602A EP06830602A EP1979506A1 EP 1979506 A1 EP1979506 A1 EP 1979506A1 EP 06830602 A EP06830602 A EP 06830602A EP 06830602 A EP06830602 A EP 06830602A EP 1979506 A1 EP1979506 A1 EP 1979506A1
Authority
EP
European Patent Office
Prior art keywords
layer
hard material
substrate
passivation layer
passivation
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.)
Ceased
Application number
EP06830602A
Other languages
German (de)
English (en)
Inventor
Bertram Haag
Sergej Vogelsang
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler KG
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 Schaeffler KG filed Critical Schaeffler KG
Publication of EP1979506A1 publication Critical patent/EP1979506A1/fr
Ceased 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
    • C23C22/48—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 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
    • C23C22/53—Treatment of zinc or alloys based thereon
    • 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
    • C23C22/73—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 characterised by the process
    • 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
    • C23C22/73—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 characterised by the process
    • C23C22/74—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 characterised by the process for obtaining burned-in conversion coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • 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
    • C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
    • C23C2222/10—Use of solutions containing trivalent chromium but free of hexavalent chromium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12576—Boride, carbide or nitride component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12597—Noncrystalline silica or noncrystalline plural-oxide component [e.g., glass, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12611—Oxide-containing component

Definitions

  • the present invention relates to an arrangement for protecting a substrate from corrosion, a method for producing such an arrangement and a pulley.
  • Steel or alloy steel components are typically subject to corrosion especially in an elevated temperature environment, such as in the engine compartment.
  • a corrosion protection layer of zinc or a zinc alloy is usually coated with a corrosion protection layer of zinc or a zinc alloy. Since this zinc-containing layer can also corrode, a so-called passivation layer or conversion layer is applied for further passivation on the surface of this zinc layer or zinc alloy.
  • This usually consists of a chromate coating, which may contain, for example, chromium (III) or chromium (VI).
  • chromate coating which may contain, for example, chromium (III) or chromium (VI).
  • the passivation layer may be coated with a so-called topcoat, a polymer compound, for example polyacrylate or polyethylene, or an organic or inorganic paint.
  • the coatings usually applied to improve the corrosion protection or the frictional resistance are electrically nonconductive and thus can not dissipate electrical charges.
  • the use of all-plastic components as an alternative does not allow discharge of the charges.
  • the present invention relates to an arrangement for protecting a substrate against corrosion, comprising a substrate, in particular a metallic substrate, with an applied on the substrate, electrically conductive corrosion protection layer for protecting the substrate from corrosion, the one on the substrate having deposited zinc containing layer having a passivation layer provided on the zinc containing layer for passivating the zinc containing layer having a plurality of hard material particles arranged such that by the hard material particles frictional resistance on a free surface of the passivation layer in the Compared to a passivation layer is increased without hard particles, but the electrical conductivity of the passivation layer is substantially retained.
  • a zinc-containing layer or a zinc-containing material is understood to mean a layer or a material of zinc or a zinc alloy. Also, when referring to a zinc layer, a layer of a zinc alloy should be included.
  • passivation layer and conversion layer are used in the same application in this application.
  • the idea underlying the present invention is to increase the frictional resistance of the passivation layer to polymer materials such as V-belts or rubber rollers by the use of hard material particles in a passivation layer.
  • the wear of both the passivation layer and the contacting polymer materials can be reduced.
  • the electrical conductivity of the surface, in particular of the passivation layer can be maintained in order to be able to dissipate electrostatic charging occurring in the friction between the passivation layer and the polymer material.
  • the use of hard material particles in the passivation layer accordingly does not affect the electrical properties of the surface or at least negligibly, but improves the stability and in particular the frictional resistance to other materials.
  • the present invention relates to a pulley having a metallic body having a hub for snugly receiving a shaft with an outer surface its circumference for receiving a belt made of a polymer material, with an arrangement according to the first aspect of the invention, wherein the substrate of the arrangement is at least in the region of the outer surface of the metallic body.
  • the application of the passivation layer containing hard material particles makes it possible to provide a pulley which exhibits less or no electrostatic charge.
  • the pulley shows due to the increased frictional resistance better entrainment behavior.
  • the power transmission is increased at the same belt tension or a lower belt tension can be selected in order to achieve the same force transmission as in a passivation layer without hard material particles.
  • the present invention relates to a method for producing a passivation layer, in particular for an arrangement according to the first aspect of the present invention, comprising the steps:
  • the hard material particles integrated in the conversion layer are incorporated into the conversion layer during the production thereof. Due to the size of the hard material particles, these easily remain suspended in the passivation bath and are integrated into this conversion layer when the conversion layer fails. By means of the method according to the invention, a preferably homogeneous incorporation of the hard material particles into the conversion layer takes place.
  • the hard material particles are formed as nanoparticles.
  • the size of the nanoparticles is in the range of 1 to 1000 nm, preferably in the range of 2 to 100 nm, more preferably in the range of 8 to 50 nm and in particular in the range of 10 to 20 nm.
  • the size of the particles is preferably less than the thickness of the passivation layer that is to be produced. Thus, a good particle distribution is achieved in the passivation layer.
  • the size of the particles is chosen so that they protrude slightly from the passivation layer. As a result, the surface of the passivation layer is changed in such a way that a better adhesion behavior is produced.
  • the hard material particles consist of an inorganic hard material.
  • the hard material particles have a Mohs hardness of at least 5.
  • Preferred materials for the hard material particles are inorganic carbides, oxides, diamonds and / or nitrides, in particular SiO 2 , SiC, WC, Al 2 O 3 and / or BN , or mixtures thereof.
  • SiO 2 , SiC, WC, Al 2 O 3 and / or BN or mixtures thereof.
  • the passivation layer has a thickness of at most 800 nm, preferably in the range of 50 to 500 nm and in particular of 100 to 200 nm.
  • the zinc-containing layer may have a thickness of more than 0.5 ⁇ m, preferably more than 100 ⁇ m be.
  • the passivation layer is formed as a chromium-containing passivation layer, which therefore contains chromium.
  • the pulley is designed as a V-ribbed disk or as a flat disk.
  • the substrate is made of steel or a steel alloy.
  • hard material particles are introduced into a passivation solution in order to produce the passivation bath.
  • the passivation layer is rinsed in a further step (d).
  • the rinsing may take place before or after a drying step according to another preferred development of the present invention. It is also possible to rinse them both before and after a drying step of the passivation layer.
  • the passivation bath contains a chromium-containing passivation solution.
  • the chromating bath is essentially chromium (VI) -free.
  • chromium (III) in the passivation bath, it is possible to produce a conversion layer which is essentially chromium (VI) -free.
  • Other possibilities are, for example, by using passivations based on Zr or Ti.
  • FIG. 1 shows a first general embodiment of an inventive arrangement for protecting a substrate from corrosion.
  • FIG. 2 shows in the partial figures a) to d) a method for producing a corrosion protection layer according to the invention
  • FIG. 3 is a perspective view of a generator freewheel pulley.
  • Fig. 4 is a cross-sectional view of the generator freewheel pulley
  • Fig. 1 shows a first general embodiment of an inventive arrangement for corrosion protection of a substrate.
  • the arrangement is designated by reference numeral 14 here.
  • the assembly 14 includes a substrate 10 having a corrosion protection layer 16 applied thereon.
  • the substrate 10 may be steel or a steel alloy.
  • a zinc-containing layer 1 1 is applied as part of the corrosion protection layer 16.
  • the zinc-containing layer 11 can be deposited galvanically or by hot dip galvanizing, for example.
  • the thickness of the layer 1 1 can be chosen more or less freely.
  • the layer thickness of the layer 11 is more than 0.5 ⁇ m and preferably a few ⁇ m.
  • a passivation layer 12 is also applied as part of the corrosion protection layer 16.
  • the passivation layer 12 may contain Zr, Ti, chromium (III) or else chromium (VI).
  • the passivation layer 12 contains nanoparticles 13, which may be formed, for example, as SiO 2 nanoparticles.
  • the nanoparticles 13 can consist, for example, of Al 2 O 3 or SiC.
  • FIG. 2 shows a method for producing a passivation layer 16 according to the invention.
  • a substrate 10 is provided (FIG. 2a).
  • a zinc-containing layer 1 1 is applied (Fig. 2b).
  • the assembly thus prepared is immersed in a passivation bath 17.
  • the Passivitationsbad 17 can be heated, for example, to 30 ° C.
  • the passivation bath 17 contains nanoparticles 13. These are incorporated in the conversion layer 12 during the deposition of the conversion layer 12 on the zinc-containing layer 11 in the passivation bath 17 (FIG. 2c).
  • a concrete example for generating the conversion layer 12 is shown below.
  • FIG. 3 shows a perspective view of a generator freewheeling pulley 21, to the disk body 22 of which V-ribs 23 are attached.
  • the V-ribs 23 are designed such that a V-ribbed belt can be deflected over the outer circumference of the generator freewheeling pulley 21.
  • the surface of the V-ribs 23 of the outer periphery of the generator freewheel pulley is provided with a corrosion protection layer 16 according to the present invention.
  • FIG. 4 shows the generator freewheeling pulley from FIG. 3 in a cross-sectional view.
  • the mounted on the disk body 22 V-ribs 23 are provided with a corrosion protection layer 16.

Abstract

La présente invention concerne un ensemble destiné à protéger un substrat de la corrosion, ledit ensemble comprenant un substrat, notamment un substrat métallique et une couche conductrice protectrice anticorrosive, disposée sur le substrat, afin de protéger ledit substrat de la corrosion, une couche contenant du zinc disposée sur le substrat, une couche de passivation destinée à passiver la couche contenant du zinc et disposée sur la couche contenant du zinc, ladite couche de passivation présentant une pluralité de particules de matière dure, de manière à ce que les particules de matière dure confèrent à une surface libre de la couche de passivation une résistance à la friction plus élevée comparée à une couche de conversion sans particules de matière dure, la conductivité électrique de la couche de passivation étant cependant sensiblement conservée. L'invention concerne également un procédé de fabrication d'un tel ensemble, ainsi qu'une poulie.
EP06830602A 2006-01-16 2006-12-13 Composition sans chrome (vi) pour proteger une surface metallique galvanisee de la corrosion, son procede de fabrication et poulie Ceased EP1979506A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006002224A DE102006002224A1 (de) 2006-01-16 2006-01-16 Anordnung zum Schutz eines Substrates vor Korrosion, Verfahren zu dessen Herstellung sowie Riemenscheibe
PCT/EP2006/069669 WO2007082613A1 (fr) 2006-01-16 2006-12-13 Composition sans chrome (vi) pour proteger une surface metallique galvanisee de la corrosion, son procede de fabrication et poulie

Publications (1)

Publication Number Publication Date
EP1979506A1 true EP1979506A1 (fr) 2008-10-15

Family

ID=37865703

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06830602A Ceased EP1979506A1 (fr) 2006-01-16 2006-12-13 Composition sans chrome (vi) pour proteger une surface metallique galvanisee de la corrosion, son procede de fabrication et poulie

Country Status (7)

Country Link
US (1) US20100160102A1 (fr)
EP (1) EP1979506A1 (fr)
JP (1) JP2009523909A (fr)
KR (1) KR20080093990A (fr)
CN (1) CN101360847A (fr)
DE (1) DE102006002224A1 (fr)
WO (1) WO2007082613A1 (fr)

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KR20080093990A (ko) 2008-10-22
JP2009523909A (ja) 2009-06-25
WO2007082613A1 (fr) 2007-07-26
CN101360847A (zh) 2009-02-04
DE102006002224A1 (de) 2007-07-19
US20100160102A1 (en) 2010-06-24

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