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EP2044240B1 - Procédé d'application d'un matériau de revêtement et revêtement pour une surface métallique - Google Patents

Procédé d'application d'un matériau de revêtement et revêtement pour une surface métallique Download PDF

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Publication number
EP2044240B1
EP2044240B1 EP07718480.2A EP07718480A EP2044240B1 EP 2044240 B1 EP2044240 B1 EP 2044240B1 EP 07718480 A EP07718480 A EP 07718480A EP 2044240 B1 EP2044240 B1 EP 2044240B1
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EP
European Patent Office
Prior art keywords
wear
layer
protection layers
content
transition region
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.)
Active
Application number
EP07718480.2A
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German (de)
English (en)
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EP2044240A2 (fr
Inventor
Heinrich Werger
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.)
Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
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Publication of EP2044240A2 publication Critical patent/EP2044240A2/fr
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Publication of EP2044240B1 publication Critical patent/EP2044240B1/fr
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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
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
    • 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
    • Y10T428/12458—All metal or with adjacent metals having composition, density, or hardness gradient
    • 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
    • Y10T428/12583—Component contains compound of adjacent metal
    • 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
    • Y10T428/30—Self-sustaining carbon mass or layer with impregnant or other layer
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]

Definitions

  • the invention relates to a method for applying a multi-layer wear-resistant coating to metallic, possibly already coated surfaces, wherein the coating consists of at least two wear protection layers and an intermediate layer disposed between two wear protection layers, as well as a coating for a metallic surface.
  • the layer sequence of at least a first adhesive layer, a first wear protection layer, a second adhesive layer and a second wear protection layer said layer sequence may optionally be applied repeatedly.
  • a plurality of wear protection layers of small layer thickness can be combined to form a sufficiently sufficiently thick coating.
  • the individual wear protection layers can be applied in this case in a thickness which ensures that no excessive residual stresses occur, which could lead to a flaking of the wear protection layers.
  • the adhesive layers applied between the individual wear protection layers in this case consist of a material which is significantly softer compared to the material of the wear protection layer.
  • the die WO 2005/014882 A discloses a CVD method for applying a multi-layer, wear-resistant protective layer to a substrate, which may be metallic.
  • the substrate is a first layer, for example. Chromium applied, followed by, for example, a CrN layer, which is followed by a transition layer of Cr x C y .
  • the top layer is made of diamond-like carbon material (DLC).
  • DLC diamond-like carbon material
  • the WO2006 / 005288 A discloses a piston ring consisting of a base body, on the outer peripheral surface of which a plurality of layers are stacked one above the other, wherein the outer circumferential surface facing adhesive layer is a PVD adhesive layer based on Cr.
  • the WO 01/79585 A discloses a DLC layer system. Directly on the substrate there is an adhesive layer with at least an element from the group of elements of IV, V and VI subgroup and Si. Preferably, an adhesion layer of Cr or Ti is used. This is followed by a transition layer, which is preferably formed as a gradient layer in the course perpendicular to the substrate surface, the metal content decreases and the C content increases.
  • the invention is essentially characterized in that the intermediate layer consists of a material composition comprising the material of the two wear-resistant layers and a further material, wherein the application of the intermediate layer with over a erin the intermediate layer is reduced or increased according to a ramp function.
  • the invention provides that the content of the material of the wear protection layer in the intermediate layer is reduced to at least 30 wt .-%, preferably at least 50 wt .-%.
  • a wear protection layer ie a layer with a content of 100 wt .-% of coating material, followed by a first transition region of the intermediate layer, in which the content of the material of the wear protection layer of 100 wt. Reduced% to, for example, 50 wt .-% and increases the content of the other material accordingly.
  • a further transition region of the intermediate layer is then provided, in which the content of the material of the wear protection layer is again increased to 100 wt .-% and the content of the further material is reduced accordingly.
  • the first transition region preferably directly adjoins the underlying wear protection layer and the second transition region merges directly into the overlying wear protection layer.
  • another area may be arranged in which the content of the materials is the same is chosen permanently.
  • the second transition region directly adjoins the first transition region is preferred, since the intermediate layer should be made as thin as possible and no further functional partial regions appear necessary in addition to the two transition regions serving for the material transition.
  • the material of the wear protection layer of 100 wt .-% reduced to, for example, 50 wt .-% and increases the content of the other material accordingly.
  • a further transition region of the intermediate layer is then provided, in which the content of the material of the wear protection layer is again increased to 100 wt .-% and the content of the further material is reduced accordingly.
  • the first transition region preferably directly adjoins the underlying wear protection layer and the second transition region merges directly into the overlying wear protection layer.
  • first transition region in which the content of the material of the wear protection layer is lowered
  • second transition region in which the content of the material of the wear protection layer is increased again
  • another area may be arranged in which the content of the materials is the same is chosen permanently.
  • the second transition region directly adjoins the first transition region is preferred, since the intermediate layer should be made as thin as possible and no further functional subregions appear necessary in addition to the two transition regions serving for the material transition.
  • the layers are preferably applied by a CVD method, processes being known from the prior art with which the proportions of the individual materials during application of the layers can be changed continuously.
  • the invention provides that the wear protection layer consists of a diamond-like carbon material (DLC).
  • the intermediate layer contains according to the invention in addition the material of the wear protection layer another wear-resistant material, namely CrN.
  • an adhesive layer 2 of a soft material for example Cr
  • a first wear protection layer 3 which may consist of CrN, for example.
  • a transition layer 4 the concentration of the material of the first wear protection layer 3 is reduced to zero and at the same time the concentration of the material of a second wear protection layer 5, for example DLC (diamond like carbon), is increased.
  • a second wear protection layer 5 is applied.
  • the diagram shows the concentration 6 as a function of the distance 7 from the surface of the component 1 to be coated, the solid line 8 representing the concentration of the material of the first wear protection layer and the dot-dash line 9 the concentration of the material of the wear protection layer.
  • Fig. 2 shows a coating according to the present invention.
  • adhesive layer 2 first wear protection layer 3, transition layer 4 and wear protection layer 5
  • an intermediate layer 10 adjoins, in which the concentration of the material of the adjacent wear protection layers is lowered from 100% to 50% in a first transition region a and in a second transition region b is again increased to 100%, wherein a further material, in the present case, the material of the wear protection layer 3, mixed accordingly, wherein the content of the further material in the transition region a increases up to 50% and in the subsequent second Transition area b back to zero is lowered.
  • this intermediate layer 10 includes a further layer of the second wear protection view 5.
  • Intermediate layer 10 and second wear protection layer 5 can subsequently be repeated several times.
  • the advantage of this invention is that the stresses occurring between wear protection layer 3 and wear protection layer 5 due to the coating normally become so great from a certain layer thickness that the coating no longer securely adheres. As a result, the thickness of a coating is limited upwards.
  • the stresses are reduced and it is possible to apply a further layer of the same protective layer, so that in practice almost arbitrarily thick coatings can be realized.
  • DLC diamond like carbon
  • the material of the wear protection layer 3 may be selected.
  • the material of the wear protection layer 3 which is also mixed with the intermediate layer 10, it is possible, for example, to choose CrN.
  • the material admixed with the intermediate layer 10 does not necessarily have to correspond to the material of the wear protection layer 3.
  • the layer structure resulting from the multiple application of the layers 5 and 10 does not necessarily have to be applied to the component 1 with the interposition of the layers 3, 4 and optionally 2. Rather, an immediate application, with or without the interposition of an adhesive layer, conceivable.
  • the arrangement of the existing from the material of the wear protection layer 5 softer material layer 3 is only for producing a continuous transition from the soft material of the component 1 to the very hard material of the wear protection layers fifth

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Vapour Deposition (AREA)
  • Physical Vapour Deposition (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (14)

  1. Procédé destiné à l'application d'un revêtement multicouche résistant à l'usure sur des surfaces métalliques qui sont, éventuellement, déjà pourvues d'un revêtement, dans lequel le revêtement est constitué de tout au moins deux couches de protection contre l'usure (5, 5) et d'une couche intermédiaire, laquelle est disposée respectivement entre deux couches de protection contre l'usure, caractérisé en ce que la couche intermédiaire est constituée d'une composition de matériaux, laquelle contient le matériau des deux couches de protection contre l'usure ainsi qu'un autre matériau, dans lequel un matériau en carbone semblable à du diamant (DLC) est sélectionné comme étant le matériau pour les deux couches de protection contre l'usure et du nitrure de chrome (CrN) est sélectionné comme étant l'autre matériau contenu dans la couche intermédiaire, dans lequel l'application de la couche intermédiaire est réalisée avec une teneur décroissante, sur une première zone de transition, du matériau des deux couches de protection contre l'usure, et avec une teneur croissante, sur une deuxième zone de transition, du matériau des deux couches de protection contre l'usure, dans lequel la teneur du matériau des deux couches de protection contre l'usure dans la couche intermédiaire est sélectionnée avec au moins 5 % en poids en chacun des endroits, dans lequel la teneur du matériau des deux couches de protection contre l'usure dans la couche intermédiaire est réduite jusqu'à au moins 30 % en poids, de préférence jusqu'à au moins 50 % en poids.
  2. Procédé selon la revendication 1, caractérisé en ce que la teneur du matériau des deux couches de protection contre l'usure dans la couche intermédiaire est réduite, respectivement est augmentée conformément à une fonction de rampe.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'application de la première zone de transition de la couche intermédiaire est réalisée avec une teneur du matériau des deux couches de protection contre l'usure qui se réduit en partant de 100 % en poids et l'application de la deuxième zone de transition est réalisée avec une teneur du matériau des deux couches de protection contre l'usure qui augmente jusqu'à une teneur de 100 % en poids.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que la première zone de transition vient se joindre directement à la couche de protection contre l'usure se trouvant au-dessous et la deuxième zone de transition se poursuit directement dans la couche de protection contre l'usure se trouvant au-dessus.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que la première zone de transition vient se joindre directement à la deuxième zone de transition.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que les couches sont appliquées au moyen d'un procédé CVD.
  7. Revêtement multicouche appliqué sur une surface métallique qui est éventuellement déjà pourvue d'un revêtement, lequel revêtement est constitué de tout au moins deux couches de protection contre l'usure (5, 5) et d'une couche intermédiaire, laquelle est disposée respectivement entre deux couches de protection contre l'usure, caractérisé en ce que la couche intermédiaire (10) est constituée d'une composition de matériaux, laquelle contient le matériau des deux couches de protection contre l'usure (5, 5) ainsi qu'un autre matériau, avec une teneur décroissante, sur une première zone de transition (a), du matériau des deux couches de protection contre l'usure (5, 5) et avec une teneur croissante, sur une deuxième zone de transition (b), du matériau des deux couches de protection contre l'usure (5, 5), dans lequel un matériau en carbone semblable à du diamant (DLC) est sélectionné comme étant le matériau pour les deux couches de protection contre l'usure (5, 5) et du nitrure de chrome (CrN) est sélectionné comme étant l'autre matériau contenu dans la couche intermédiaire (10), dans lequel la teneur du matériau des deux couches de protection contre l'usure (5, 5) dans la couche intermédiaire (10) s'élève à au moins 5 % en poids en chacun des endroits, dans lequel la teneur du matériau des deux couches de protection contre l'usure (5, 5) dans la couche intermédiaire (10) est réduite jusqu'à au plus 30 % en poids, de préférence jusqu'à au plus 50 % en poids.
  8. Revêtement selon la revendication 7, caractérisé en ce que la teneur du matériau des deux couches de protection contre l'usure (5, 5) dans la couche intermédiaire (10) est réduite, respectivement est augmentée conformément à une fonction de rampe (9).
  9. Revêtement selon la revendication 7 ou 8, caractérisé en ce que la première zone de transition (a) de la couche intermédiaire (10) est appliquée avec une teneur du matériau des deux couches de protection contre l'usure (5, 5) qui se réduit en partant de 100 % en poids et caractérisé en ce que la deuxième zone de transition (b) est appliquée avec une teneur du matériau des deux couches de protection contre l'usure (5, 5) qui augmente jusqu'à une teneur de 100 % en poids.
  10. Revêtement selon l'une des revendications 7 à 9, caractérisé en ce que la première zone de transition (a) vient se joindre directement à la couche de protection contre l'usure (5) se trouvant au-dessous et la deuxième zone de transition (b) se poursuit directement dans la couche de protection contre l'usure (5) se trouvant au-dessus.
  11. Revêtement selon l'une des revendications 7 à 10, caractérisé en ce que la deuxième zone de transition (b) vient se joindre directement à la première zone de transition (a).
  12. Revêtement selon l'une des revendications 7 à 11, caractérisé en ce qu'une couche de protection contre l'usure (3) constituée d'un autre matériau est disposée au-dessous des deux couches de protection contre l'usure (5, 5).
  13. Revêtement selon l'une des revendications 7 à 12, caractérisé en ce qu'une couche de transition (4), qui comprend une teneur croissante du matériau des deux couches de protection contre l'usure (5, 5) et qui comprend en conséquence une teneur décroissante de l'autre matériau, est disposée entre la couche de protection contre l'usure (3) de l'autre matériau et les deux couches de protection contre l'usure (5, 5).
  14. Revêtement selon l'une des revendications 7 à 13, caractérisé en ce que la couche de protection contre l'usure (3) de l'autre matériau est appliquée en interposant une couche de liaison (2), par exemple en chrome (Cr), sur la surface (1) devant être revêtue.
EP07718480.2A 2006-07-26 2007-06-04 Procédé d'application d'un matériau de revêtement et revêtement pour une surface métallique Active EP2044240B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0127306A AT503288B1 (de) 2006-07-26 2006-07-26 Verfahren zum aufbringen eines beschichtungsmaterials sowie beschichtung für eine metallische oberfläche
PCT/AT2007/000269 WO2008011642A2 (fr) 2006-07-26 2007-06-04 Procédé d'application d'un matériau de revêtement et revêtement pour une surface métallique

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EP2044240A2 EP2044240A2 (fr) 2009-04-08
EP2044240B1 true EP2044240B1 (fr) 2017-08-09

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US (1) US8178213B2 (fr)
EP (1) EP2044240B1 (fr)
JP (1) JP5508006B2 (fr)
AT (1) AT503288B1 (fr)
WO (1) WO2008011642A2 (fr)

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Publication number Publication date
JP5508006B2 (ja) 2014-05-28
JP2009544844A (ja) 2009-12-17
AT503288A4 (de) 2007-09-15
WO2008011642A3 (fr) 2008-06-19
US20090252968A1 (en) 2009-10-08
US8178213B2 (en) 2012-05-15
AT503288B1 (de) 2007-09-15
EP2044240A2 (fr) 2009-04-08
WO2008011642A2 (fr) 2008-01-31

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