WO2024252094A1 - Pièce présentant une surface externe, ladite surface externe étant recouverte d'un revêtement multicouches - Google Patents
Pièce présentant une surface externe, ladite surface externe étant recouverte d'un revêtement multicouches Download PDFInfo
- Publication number
- WO2024252094A1 WO2024252094A1 PCT/FR2024/050719 FR2024050719W WO2024252094A1 WO 2024252094 A1 WO2024252094 A1 WO 2024252094A1 FR 2024050719 W FR2024050719 W FR 2024050719W WO 2024252094 A1 WO2024252094 A1 WO 2024252094A1
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- WIPO (PCT)
- Prior art keywords
- layer
- sub
- deposited
- chromium
- nickel
- Prior art date
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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
- C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
- C23C28/044—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material coatings specially adapted for cutting tools or wear applications
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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
- 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
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- C—CHEMISTRY; METALLURGY
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- 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
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- 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
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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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/02—Pretreatment of the material to be coated
- C23C16/0272—Deposition of sub-layers, e.g. to promote the adhesion of the main coating
- C23C16/0281—Deposition of sub-layers, e.g. to promote the adhesion of the main coating of metallic sub-layers
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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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/26—Deposition of carbon only
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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
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- 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
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- C23C28/021—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal alloy layer
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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
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/026—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one amorphous metallic material layer
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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
- C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
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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
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- C23C28/046—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material with at least one amorphous inorganic material layer, e.g. DLC, a-C:H, a-C:Me, the layer being doped or not
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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
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
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- F16C33/02—Parts of sliding-contact bearings
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- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
- F16C33/122—Multilayer structures of sleeves, washers or liners
- F16C33/125—Details of bearing layers, i.e. the lining
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- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
- F16C33/122—Multilayer structures of sleeves, washers or liners
- F16C33/127—Details of intermediate layers, e.g. nickel dams
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
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- C—CHEMISTRY; METALLURGY
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
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- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
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- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
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- F05D2300/00—Materials; Properties thereof
- F05D2300/50—Intrinsic material properties or characteristics
- F05D2300/502—Thermal properties
- F05D2300/5021—Expansivity
- F05D2300/50211—Expansivity similar
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/50—Intrinsic material properties or characteristics
- F05D2300/506—Hardness
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/50—Intrinsic material properties or characteristics
- F05D2300/509—Self lubricating materials; Solid lubricants
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2204/00—Metallic materials; Alloys
- F16C2204/40—Alloys based on refractory metals
- F16C2204/44—Alloys based on chromium
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2204/00—Metallic materials; Alloys
- F16C2204/52—Alloys based on nickel, e.g. Inconel
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2206/00—Materials with ceramics, cermets, hard carbon or similar non-metallic hard materials as main constituents
- F16C2206/80—Cermets, i.e. composites of ceramics and metal
- F16C2206/82—Cermets, i.e. composites of ceramics and metal based on tungsten carbide [WC]
Definitions
- the invention relates to the technical field of parts of an engine reducer, in particular an aircraft engine, such as a bearing of an aircraft engine reducer.
- a reducer in particular a mechanical reducer
- the role of a reducer, in particular a mechanical reducer, is to modify the speed and torque ratio between the input shaft and the output shaft of a mechanical system.
- the new generations of dual-flow turbomachines, in particular those with a very high bypass ratio, include a mechanical reducer to drive the shaft of a fan.
- the reducer aims to transform the so-called fast rotation speed of the shaft of a power turbine into a slower rotation speed for the shaft driving the fan.
- Such a reducer comprises a central pinion, called a sun gear, a crown gear and pinions called satellites, which are engaged between the sun gear and the crown gear.
- the satellites are held by a frame called a satellite carrier.
- the sun gear, the crown and the satellite carrier are planetary because their axes of revolution coincide with the longitudinal axis X of the turbomachine.
- the satellites each have a different axis of revolution equally distributed on the same operating diameter around the axis of the planetary gears. These axes are parallel to the longitudinal axis X.
- reducer architectures In the state of the art of dual-flow turbomachines, the reducers are of the planetary or epicyclic type. In other similar applications, there are architectures called differential or compound.
- the planetary carrier On a planetary reducer, the planetary carrier is fixed and the crown constitutes the output shaft of the device which rotates in the opposite direction of the sun gear.
- the crown On an epicyclic reducer, the crown is fixed and the planet carrier constitutes the output shaft of the device which rotates in the same direction as the sun.
- no element On a differential reducer, no element is fixed in rotation. The crown rotates in the opposite direction of the sun and the planet carrier.
- the reducers can be composed of one or more meshing stages. This meshing is ensured in different ways such as by contact, by friction or by magnetic fields. There are several types of contact meshing such as with straight, helical or herringbone teeth.
- the bearings of a reducer in particular the plain bearings of an aircraft engine reducer, have various advantages, in particular a limited size, a capacity to support high radial loads, at high speeds, but also a significant gain in reliability and dynamics.
- bearings in particular the plain bearings of a reducer, in particular of an aircraft engine, can be covered with coatings of different types, in order to limit their wear, the consequences of friction between mechanical parts thus limiting the risks of seizure.
- coatings for example, copper-lead or copper-bismuth type coatings are used to cover the surface of bearings, such as a plain bearing.
- Coatings comprising a zinc-tin-lead alloy can also be cited as an example.
- the present invention relates to a part having an external surface, said external surface being covered with a coating comprising at least: a) a first layer, deposited on the external surface of the part, comprising at least two sub-layers: i) a first sub-layer made of a material comprising at least one element chosen from chromium, nickel, cobalt, phosphorus, nitrogen, niobium, their alloys and their mixtures; ii) a second sub-layer, deposited on the first sub-layer, made of a material comprising at least two elements chosen from chromium, nickel, tungsten, cobalt, carbon, nitrogen, their alloys and their mixtures; iii) a third sub-layer, deposited on the second sub-layer, made of a material comprising at least one element chosen from chromium, nickel, titanium, silicon, cobalt, phosphorus, nitrogen, their alloys and their mixtures; and b) a second layer, deposited on the first layer
- the part according to the invention an improvement in wear resistance is obtained with a coating having a Young's modulus and a coefficient of expansion close to that of steel, for example during the different operating cycles.
- the coefficient of friction is minimized thanks to the part according to the invention.
- the longevity of the part is increased.
- the adhesion of the coating to the surface of the part is ensured.
- the undercoats can also act as a solid lubricant, thereby extending the life of the coating on the part, and therefore increasing the life of the part according to the invention.
- the material of the first sublayer comprises at least one element chosen from chromium, nickel, phosphorus, nitrogen, niobium, their alloys and their mixtures.
- the material of the second sublayer comprises at least two elements chosen from chromium, nickel, tungsten, carbon, nitrogen, their alloys and their mixtures.
- the first sublayer and the second sublayer are different. In other words, the material of the first sublayer and the material of the second sublayer are preferably of different natures.
- the first layer further comprises: iii) a third sublayer, deposited on the second sublayer, made of a material comprising at least one element chosen from chromium, nickel, titanium, silicon, cobalt, phosphorus, nitrogen, their alloys and their mixtures.
- the hardness of the second layer is greater than or equal to, more preferably strictly greater than, the hardness of the third sub-layer.
- the second layer is a layer of hydrogenated or non-hydrogenated amorphous carbon, preferably a layer of hydrogenated amorphous carbon.
- Amorphous carbon, also called DLC for “Diamond Like Carbon” is a family of coatings based on carbon atoms.
- the second layer is a layer of hydrogenated amorphous carbon (ac:H). Thanks to the layer of amorphous carbon, the wear resistance is all the more improved and the coefficient of friction is minimized.
- the ratio of the carbon-carbon sp 2 /sp 3 bonds in the layer of amorphous carbon ranges from 1 to 3. Thanks to this particular ratio, the wear resistance is all the more improved.
- the coating has a thickness ranging from 0.5 ⁇ m to 50 ⁇ m.
- the hardness of the second layer is greater than or equal to, more preferably strictly greater than, the hardness of the first layer.
- the hardness of the second layer is greater than or equal to, more preferably strictly greater than, the hardness of the second sub-layer.
- the coating has a hardness gradient and preferably a modulus gradient.
- the coating preferably has a hardness ranging from 1000 to 4000 Hv (Vickers hardness).
- the Vickers hardness is determined experimentally by nano-indentation or micro-durometer, according to a conventional method well known to those skilled in the art.
- the coating preferably has a Young's modulus ranging from 170 to 250 GPa. The Young's modulus is determined experimentally by nano-indentation.
- the first layer further comprises: iv) a fourth sub-layer, deposited on the third sub-layer, made of a material comprising at least one element chosen from chromium, nickel, titanium, silicon, cobalt, phosphorus, nitrogen, their alloys and their mixtures.
- the hardness of the second layer is greater than or equal to, more preferably strictly greater than, the hardness of the fourth sub-layer.
- the first layer further comprises: v) a fifth sub-layer, deposited on the fourth sub-layer, made of a material comprising at least one element chosen from chromium, nickel, titanium, silicon, cobalt, phosphorus, nitrogen, their alloys and their mixtures.
- the hardness of the second layer is greater than or equal to, more preferably strictly greater than, the hardness of the fifth sub-layer.
- the part according to the invention is a part of an engine reducer, more preferably a part of an aircraft engine reducer, even more preferably a bearing of an aircraft engine reducer, better still a plain bearing of an aircraft engine reducer.
- the part is a bearing, such as a plain bearing.
- Another subject of the invention is a method of manufacturing the part according to the invention comprising the following steps: (a) providing a part according to the invention having an external surface; (b) forming on the external surface at least the first sub-layer, the second sub-layer and the third sub-layer to obtain the first layer, as defined above; (c) forming on the first layer the second layer as defined above to obtain the coating.
- the present invention also has as its subject comprising at least one part as defined in any one of the preceding claims.
- FIG 1 represents a part having an external surface being covered with a multilayer coating for illustrative purposes
- FIG 2 represents a part having an external surface being covered with a multilayer coating according to a first embodiment in accordance with the invention
- FIG 3 represents a part having an external surface being covered with a multilayer coating according to a second embodiment in accordance with the invention
- FIG 4 represents a part having an external surface being covered with a multilayer coating according to a third embodiment in accordance with the invention.
- Figure 1 illustrates a part 1 having an external surface 1a which is covered with a coating 2 for illustrative purposes.
- the coating 2 comprises a first layer 3, deposited on the external surface 1a of the part 1, and a second layer 4 deposited on the first layer 3.
- the first layer 3 comprises a first sublayer 3a made of a material comprising at least one element chosen from chromium, nickel, cobalt, phosphorus, nitrogen, niobium, their alloys and their mixtures.
- the first sublayer 3a is deposited on the external surface 1a of the part 1.
- the material of the first sublayer 3a comprises at least one element chosen from chromium, nickel, phosphorus, nitrogen, niobium, their alloys and their mixtures.
- the material of the first sublayer 3a may be a metal, a doped metal or a ceramic containing chromium, a nickel alloy, such as a chromium-nickel alloy or a nickel-phosphorus alloy, a mixture of nitrogen and chromium, such as chromium nitride.
- the first layer 3 further comprises a second sublayer 3b, deposited on the first sublayer 3a, made of a material comprising at least two elements chosen from chromium, nickel, tungsten, cobalt, carbon, nitrogen, their alloys and their mixtures.
- the material of the second sublayer 3b may be a nickel alloy, such as a chromium-nickel alloy, a mixture of nitrogen and chromium, a mixture of carbon and tungsten, such as tungsten carbide.
- the material of the second sublayer 3b may be doped with an element, such as carbon or a metallic element, such as silicon, chromium or titanium.
- the first sublayer 3a and the second sublayer 3b may be different. Preferably, they are different.
- the material of the first sublayer 3a and the material of the second sublayer 3b are preferably of different natures.
- the material of the first sublayer 3a is made of a chromium-nickel alloy
- the material of the second sublayer 3b will be a material different from the chromium-nickel alloy in this embodiment.
- the second layer 4 is a layer of hydrogenated or non-hydrogenated amorphous carbon, preferably a layer of hydrogenated amorphous carbon (ac:H).
- the ratio of the sp 2 /sp 3 carbon-carbon bonds in the second layer 4 ranges from 1 to 3.
- the coating 2 has a thickness ranging from 0.5 ⁇ m to 50 ⁇ m.
- the part 1 comprising the coating 2 can be manufactured according to a method comprising the following steps: (a) providing the part 1 having the external surface 1a; (b) forming on the external surface 1a the first sublayer 3a and the second sublayer 3b to obtain the first layer, as defined above.
- the sublayers 3a and 3b are for example deposited by physical vapor deposition (PVD) or by plasma-enhanced chemical vapor deposition (PECVD or PAVCD); the second layer 4 is deposited by PACVD or PECVD to obtain a better surface condition and a higher deposition speed.
- PVD physical vapor deposition
- PECVD plasma-enhanced chemical vapor deposition
- PAVCD plasma-enhanced chemical vapor deposition
- the second layer 4 is deposited by PACVD or PECVD to obtain a better surface condition and a higher deposition speed.
- the coating 2 illustrates a part 1 having an external surface 1a which is covered with a coating 2 according to a first embodiment according to the invention.
- the coating 2 comprises a first layer 3, deposited on the external surface 1a of the part 1, and a second layer 4 deposited on the first layer 3.
- the first layer 3 also comprises at least a first sub-layer 3a and a second sub-layer 3b. The same preferred modes as described above are valid for this first embodiment.
- the first layer 3 further comprises a third sub-layer 3c, deposited on the second sub-layer 3b, made of a material comprising at least one element chosen from chromium, nickel, cobalt, phosphorus, titanium, silicon, nitrogen, their alloys and their mixtures.
- the second layer 4 is deposited on the third sub-layer 3c.
- the sublayer 3c is, as for the sublayers 3a and 3b, for example deposited by physical vapor deposition (PVD) or by plasma-enhanced chemical vapor deposition (PECVD or PAVCD); the second layer 4 is deposited by PACVD or PECVD to obtain a better surface condition and a higher deposition speed.
- FIG. 3 illustrates a part 1 having an external surface 1a which is covered with a coating 2 according to a second embodiment according to the invention.
- the coating 2 comprises a first layer 3, deposited on the external surface 1a of the part 1, and a second layer 4 deposited on the first layer 3.
- the first layer 3 also comprises at least a first sublayer 3a, a second sublayer 3b and a third sublayer 3c.
- the same preferred modes as described previously and in the first embodiment are valid for this second embodiment.
- the first layer 3 further comprises a fourth sublayer 3d, deposited on the third sublayer 3c, made of a material comprising at least one element chosen from chromium, nickel, titanium, silicon, cobalt, phosphorus, nitrogen, their alloys and their mixtures. In this second mode, the second layer 4 is deposited on the fourth sublayer 3d.
- the sublayer 3d is, as for the sublayers 3a, 3b and 3c, for example deposited by physical vapor deposition (PVD) or by plasma-enhanced chemical vapor deposition (PECVD or PAVCD); the second layer 4 is deposited by PACVD or PECVD to obtain a better surface condition and a higher deposition speed.
- Figure 4 illustrates a part 1 having an external surface 1a which is covered with a coating 2 according to a third embodiment according to the invention.
- the coating 2 comprises a first layer 3, deposited on the external surface 1a of the part 1, and a second layer 4 deposited on the first layer 3.
- the first layer 3 also comprises at least a first sublayer 3a, a second sublayer 3b, a third sublayer 3c and a fourth sublayer 3d.
- the same preferred modes as described previously and in the first and second embodiments are valid for this third embodiment.
- the first layer 3 further comprises a fifth sublayer 3e, deposited on the fourth sublayer 3d, made of a material comprising at least one element chosen from chromium, nickel, cobalt, phosphorus, nitrogen, titanium, silicon, their alloys and their mixtures.
- the second layer 4 is deposited on the fifth sub-layer 3e.
- the sub-layer 3e is, as for the sub-layers 3a, 3b, 3c and 3d, for example deposited by physical vapor deposition (PVD) or by plasma-enhanced chemical vapor deposition (PECVD or PAVCD); the second layer 4 is deposited by PACVD or PECVD to obtain a better surface finish and a higher deposition rate.
- PVD physical vapor deposition
- PECVD plasma-enhanced chemical vapor deposition
- PAVCD plasma-enhanced chemical vapor deposition
- Example Five steel parts were used, hereinafter referred to as parts 1 to 5. Pin-disc tests were carried out according to DIN 50324-07, ASTM G99-05 or ISO 18535, generating the results available in Table 1. All pins are made of low-alloy steel and have a ground surface, with the particularities of Table 1.
- the discs are all identical, made of low-alloy steel with a ground surface.
- Part 1 underwent a thermochemical surface hardening treatment.
- Part 2 was used as is and did not undergo thermochemical treatment.
- Parts 3 to 5 were coated with coatings of different natures. All the information can be found in Table 1 below. [Table 1]
- Part 1 2 3 4 5 Treatment YES NO - - - Thermal Coating Coating - - CuPb18Sn CuPb multilayer typical of the application Thus, parts 1 to 4 are comparative parts.
- Part 5 is a part according to the invention, coated with a layer of amorphous carbon with underlayers with a thickness of 0.5 ⁇ m to 50 ⁇ m, by PVD and PACVD.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP24734950.9A EP4724628A1 (fr) | 2023-06-06 | 2024-06-05 | Pièce présentant une surface externe, ladite surface externe étant recouverte d'un revêtement multicouches |
| CN202480038218.8A CN121399294A (zh) | 2023-06-06 | 2024-06-05 | 具有外表面的部件,该外表面覆盖有多层涂层 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2305682A FR3149621A1 (fr) | 2023-06-06 | 2023-06-06 | Pièce présentant une surface externe, ladite surface externe étant recouverte d’un revêtement multicouches |
| FRFR2305682 | 2023-06-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024252094A1 true WO2024252094A1 (fr) | 2024-12-12 |
Family
ID=88779896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2024/050719 Ceased WO2024252094A1 (fr) | 2023-06-06 | 2024-06-05 | Pièce présentant une surface externe, ladite surface externe étant recouverte d'un revêtement multicouches |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4724628A1 (fr) |
| CN (1) | CN121399294A (fr) |
| FR (2) | FR3149621A1 (fr) |
| WO (1) | WO2024252094A1 (fr) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140178637A1 (en) * | 2012-12-21 | 2014-06-26 | Exxonmobil Research And Engineering Company | Low friction coatings with improved abrasion and wear properties and methods of making |
| US20140173995A1 (en) * | 2012-12-21 | 2014-06-26 | Exxonmobil Research And Engineering Company | Methods of making a drilling tool with low friction coatings to reduce balling and friction |
| US10458361B2 (en) * | 2014-08-27 | 2019-10-29 | Bayerische Motoren Werke Aktiengesellschaft | Coating for metal components, method for coating a metal component, piston for internal combustion engines and motor vehicle |
| EP3892895A1 (fr) * | 2020-04-10 | 2021-10-13 | Safran Transmission Systems | Reducteur mecanique de turbomachine d'aeronef |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012224043A (ja) * | 2011-04-22 | 2012-11-15 | Hitachi Ltd | Dlc膜を備えた摺動部材 |
| BR102012003607A2 (pt) * | 2012-02-16 | 2013-10-29 | Mahle Metal Leve Sa | Componente deslizante para uso em motores de combustão interna |
-
2023
- 2023-06-06 FR FR2305682A patent/FR3149621A1/fr active Pending
-
2024
- 2024-06-05 WO PCT/FR2024/050719 patent/WO2024252094A1/fr not_active Ceased
- 2024-06-05 EP EP24734950.9A patent/EP4724628A1/fr active Pending
- 2024-06-05 CN CN202480038218.8A patent/CN121399294A/zh active Pending
- 2024-09-26 FR FR2410303A patent/FR3153352A1/fr active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140178637A1 (en) * | 2012-12-21 | 2014-06-26 | Exxonmobil Research And Engineering Company | Low friction coatings with improved abrasion and wear properties and methods of making |
| US20140173995A1 (en) * | 2012-12-21 | 2014-06-26 | Exxonmobil Research And Engineering Company | Methods of making a drilling tool with low friction coatings to reduce balling and friction |
| US10458361B2 (en) * | 2014-08-27 | 2019-10-29 | Bayerische Motoren Werke Aktiengesellschaft | Coating for metal components, method for coating a metal component, piston for internal combustion engines and motor vehicle |
| EP3892895A1 (fr) * | 2020-04-10 | 2021-10-13 | Safran Transmission Systems | Reducteur mecanique de turbomachine d'aeronef |
Also Published As
| Publication number | Publication date |
|---|---|
| CN121399294A (zh) | 2026-01-23 |
| EP4724628A1 (fr) | 2026-04-15 |
| FR3153352A1 (fr) | 2025-03-28 |
| FR3149621A1 (fr) | 2024-12-13 |
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