EP4143364A1 - Composant doté d'un revêtement de protection contre l'usure, et procédé de revêtement dudit composant - Google Patents

Composant doté d'un revêtement de protection contre l'usure, et procédé de revêtement dudit composant

Info

Publication number
EP4143364A1
EP4143364A1 EP21722156.3A EP21722156A EP4143364A1 EP 4143364 A1 EP4143364 A1 EP 4143364A1 EP 21722156 A EP21722156 A EP 21722156A EP 4143364 A1 EP4143364 A1 EP 4143364A1
Authority
EP
European Patent Office
Prior art keywords
component
layer
adhesive layer
wear protection
metallic adhesive
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.)
Withdrawn
Application number
EP21722156.3A
Other languages
German (de)
English (en)
Inventor
Bernhard Mandl
Heiko GROISS
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
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP4143364A1 publication Critical patent/EP4143364A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/02—Pretreatment of the material to be coated
    • C23C14/024—Deposition of sublayers, e.g. to promote adhesion of the coating
    • C23C14/025—Metallic sublayers
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/0605—Carbon
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/0641—Nitrides
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/14—Metallic material, boron or silicon
    • C23C14/16—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
    • 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
    • C23C28/34—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
    • 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
    • C23C28/343—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 DLC or an amorphous carbon based layer, the layer being doped or not
    • 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
    • C23C28/347—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 layers adapted for cutting tools or wear applications
    • 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
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • C23C30/005—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process on hard metal substrates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/445—Selection of particular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/166—Selection of particular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/90—Selection of particular materials
    • F02M2200/9038—Coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/90—Selection of particular materials
    • F02M2200/9046—Multi-layered materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/102—Mechanical drive, e.g. tappets or cams

Definitions

  • the invention relates to a wear protection-coated component made of a steel alloy, in particular a component of a fuel injection system, the tribologically stressed surface of which is at least partially coated by a plasma process with a hard outer wear protection layer that is applied to a metallic adhesive layer.
  • the field of application of the invention extends primarily to motor vehicle technology, in particular to fuel injection systems.
  • Their components which are usually made of high-alloy steel, such as valve seats of fuel injectors, sliding bearing points in high-pressure pumps and the like, are exposed to strong pressures and frictional loads during operation, so that surfaces of the components of interest here that are subject to high tribological stress are usually provided with a hard wear protection layer, which in particular significantly reduce the coefficient of friction in tribological contacts.
  • Such wear protection layers contain, for example, chromium nitride, titanium nitride or DLC (diamond-like carbon).
  • these wear protection layers can also be used in connection with other components, for example in tool technology and to that extent as tool coatings.
  • PVD Physical Vapor Deposition
  • an additional adhesive layer made of a material with good adhesion properties - for example chrome - is usually used as an intermediate layer, which is usually arranged directly on the surface of the steel component, i.e. between it and the hard wear protection layer.
  • the wear protection layer arrangement has an outer wear protection layer formed from tetrahedral amorphous carbon or having a proportion of tetrahedrally bound amorphous carbon, as well as an adhesive layer between the surface of the component and the wear protection layer.
  • the adhesive layer provided as an intermediate layer consists essentially of titanium and also has at least one oxidation-resistant element. This reduces the high chemical reactivity of titanium and increases the resistance to oxidation in the adhesive layer, which benefits the durability of the entire wear protection arrangement.
  • the adhesive layer is also applied here using the PVD process.
  • a component to be coated consists of a high-alloy, hardened, surface-carburized or nitrided steel
  • additional material phases are formed by diffusion processes at the interface between the steel and the adhesive layer during PVD coating or during component operation, which lead to so-called delamination .
  • the unwanted diffusion process is triggered by a difference in concentration of the individual elements at the interface between the steel material of the component and the adhesive layer.
  • a additional intermediate layer for example, titanium from the intermediate layer combines here with carbon from the steel material of the component to form titanium carbide.
  • This additional intermediate layer is therefore not applied in a targeted manner, but is created by the diffusion process of the alloying elements or carbon or nitrogen from hardening processes of the steel material of the component at the interface with the adhesive layer. This results in the problem of crack formation in the additional intermediate layer, which in extreme cases can ultimately lead to the aforementioned delamination.
  • the invention includes the technical teaching that in the case of a wear protection coated component made of a steel alloy, the tribologically stressed surface of which is coated with a hard outer wear protection layer which is applied to a metallic adhesive layer.
  • Fe iron
  • the surface of the component acting as a diffusion front is separated from the adhesive layer and there is therefore no risk of delamination.
  • the additional iron layer acts as a diffusion buffer and absorbs the alloying elements of the steel material of the component, so that the interface between the iron and the adhesive layer is protected from the formation of additional material phases.
  • the metallic adhesive layer is bonded to the previously applied Fe buffer layer of the component, so that the concentration gradient of the diffusion of alloying elements from the steel material is present at the transition between the same and the Fe buffer layer, and not to the adhesive layer.
  • the Fe buffer layer is chosen so thick that the diffusion front always remains in the Fe buffer layer over the entire service life of the component. This can be ensured with a layer thickness between preferably 0.01 and 50 ⁇ m for the Fe buffer layer, depending on the component material and application.
  • the high-alloy, hardened or nitrided steel is a material that is selected from a steel group comprising chromium steels, chromium-molybdenum steels, chromium-vanadium steels, chromium-molybdenum steels Vanadium steels.
  • the wear-resistant coated component can consist of nitrided X40CrMoV5-1, which can be used for components of a fuel injector or the like.
  • the outer wear protection layer preferably consists of a tetrahedral, hydrogen-free amorphous carbon layer (Ta-C).
  • Ti-C tetrahedral, hydrogen-free amorphous carbon layer
  • CVD Chemical Vapor Deposition
  • the metallic adhesive layer preferably consists of high-purity chromium, titanium, tungsten and / or molybdenum. A mixture of titanium-aluminum or the like is also conceivable.
  • the adhesive layer increases the resistance of the hard wear protection layer and can also be applied automatically by plasma coating in a vacuum coating machine, which for this purpose deposits the adhesive layer element.
  • the adhesive layer can also be applied in multiple layers.
  • FIG. 1 shows a schematic longitudinal section through a wear-resistant coated component according to the invention of the earth
  • FIG. 2 shows a flow chart of the method steps for coating the component according to FIG. 1.
  • a component 1 - shown here only schematically - consists of a hardened, high-alloy chromium-molybdenum steel.
  • the hardening process results in carbon in the material structure.
  • the component 1 is provided with a hard outer wear protection layer 2, which is designed as a generally known tetrahedral hydrogen-free amorphous carbon layer and to that extent forms a protection for the tribologically stressed surface of the component 1.
  • the hard outer wear protection layer 2 is applied to a metallic adhesive layer 3 made of high-purity chromium.
  • This metallic adhesive layer 3 is in turn applied to an Fe buffer layer 4 which is applied to the surface of the component 1.
  • the surface of the component 1 acting as a diffusion front is separated from the adhesive layer 3 by the Fe buffer layer 4 in order to prevent delamination.
  • the carbon from the steel alloy of the component 1 cannot combine with the chromium from the adhesive layer 3 to form chromium carbide, which results in an additional material phase which would lead to delamination as a result of crack formation. Instead, the diffusion process takes place entirely in the Fe buffer layer 4, so that alloying elements of the component 1 cannot penetrate as far as the adhesive layer 3.
  • a component 1 is coated with the wear protection resistant according to the invention by initially providing a component 1 made of a steel alloy in a step A. Subsequently, in a step B, an Fe buffer layer 4 is deposited on the surface of the component 1 using a plasma process. Subsequently, in a step C, a metallic adhesive layer 3 is applied to the Fe buffer layer 4 by means of a plasma process. Finally, in a step D, the outer hard wear protection layer 2 is applied to the metallic adhesive layer 3 by means of a plasma process.
  • the application of the Fe buffer layer 4, the metallic adhesive layer 3 and the hard wear protection layer 2 takes place in this embodiment by deposition using the PVD process as a plasma process, specifically by vacuum arc evaporation, in the same PVD machine after the component 1 has been provided in a cleaned state is.
  • the invention is not limited to the preferred exemplary embodiment described above. Rather, modifications thereof are also conceivable, which are also covered by the scope of protection of the following claims.
  • a vacuum arc evaporator it is also possible to use a different plasma coating method for applying the layer structure to the surface of the component.
  • This can also consist of another high-alloy steel of the steel groups specified above, which is hardened, carburized or nitrided in order to achieve a high component strength for a tribological load which preferably occurs in the context of a fuel injection system.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Physical Vapour Deposition (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un composant (1) doté d'un revêtement de protection contre l'usure, ledit composant étant constitué d'un alliage d'acier ; en particulier un composant de système d'injection de carburant, dont la surface à contrainte tribologique est au moins partiellement revêtue d'un revêtement extérieur dur (2) de protection contre l'usure appliqué au moins en partie par un procédé à plasma, ledit revêtement de protection contre l'usure étant appliqué sur une couche adhésive métallique (3). La couche adhésive métallique (3) est appliquée sur une couche tampon en fer (4) qui est déposée sur la surface du composant (1) afin de séparer la surface du composant (1), qui agit comme front de diffusion, de la couche adhésive (3).
EP21722156.3A 2020-04-30 2021-04-23 Composant doté d'un revêtement de protection contre l'usure, et procédé de revêtement dudit composant Withdrawn EP4143364A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020205537.8A DE102020205537A1 (de) 2020-04-30 2020-04-30 Verschleißschutzbeschichtetes Bauteil sowie Verfahren zum Beschichten desselben
PCT/EP2021/060681 WO2021219511A1 (fr) 2020-04-30 2021-04-23 Composant doté d'un revêtement de protection contre l'usure, et procédé de revêtement dudit composant

Publications (1)

Publication Number Publication Date
EP4143364A1 true EP4143364A1 (fr) 2023-03-08

Family

ID=75728817

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21722156.3A Withdrawn EP4143364A1 (fr) 2020-04-30 2021-04-23 Composant doté d'un revêtement de protection contre l'usure, et procédé de revêtement dudit composant

Country Status (4)

Country Link
EP (1) EP4143364A1 (fr)
CN (1) CN115516135A (fr)
DE (1) DE102020205537A1 (fr)
WO (1) WO2021219511A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10038954A1 (de) * 2000-08-09 2002-02-28 Siemens Ag Ventil, insbesondere Einspritzventil
DE102009003192A1 (de) 2009-05-18 2010-11-25 Robert Bosch Gmbh Verschleißschutzschichtanordnung sowie Bauelement mit Verschleißschutzschichtanordnung
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