WO2024018154A1 - Procédé d'obtention d'un revêtement de protection contre l'oxydation d'une pièce en alliage à base de titane - Google Patents
Procédé d'obtention d'un revêtement de protection contre l'oxydation d'une pièce en alliage à base de titane Download PDFInfo
- Publication number
- WO2024018154A1 WO2024018154A1 PCT/FR2023/051121 FR2023051121W WO2024018154A1 WO 2024018154 A1 WO2024018154 A1 WO 2024018154A1 FR 2023051121 W FR2023051121 W FR 2023051121W WO 2024018154 A1 WO2024018154 A1 WO 2024018154A1
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- WIPO (PCT)
- Prior art keywords
- liquid composition
- precursor
- precursors
- aluminum
- metallic element
- 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.)
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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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/1204—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material inorganic material, e.g. non-oxide and non-metallic such as sulfides, nitrides based compounds
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/1204—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material inorganic material, e.g. non-oxide and non-metallic such as sulfides, nitrides based compounds
- C23C18/1208—Oxides, e.g. ceramics
- C23C18/1216—Metal oxides
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/1229—Composition of the substrate
- C23C18/1241—Metallic substrates
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/125—Process of deposition of the inorganic material
- C23C18/1254—Sol or sol-gel processing
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/125—Process of deposition of the inorganic material
- C23C18/1262—Process of deposition of the inorganic material involving particles, e.g. carbon nanotubes [CNT], flakes
- C23C18/127—Preformed particles
Definitions
- the present presentation concerns obtaining a protective coating against the oxidation of titanium-based alloys, for example for applications in turbomachines, in particular aeronautical turbomachines.
- Titanium-based alloys offer a particularly interesting combination of properties up to operating temperatures of 550°C for applications in turbomachines such as turbojets. Indeed, titanium-based alloys have low density, good damage tolerance and good fatigue resistance.
- the depths affected by the diffusion of oxygen in the alloy can reach a few hundred microns in this temperature range after 100 hours of operation at service temperatures.
- the incorporation of oxygen into the crystal lattice of the metal phase leads, on the atomic scale, to more covalent bonds. This results in a loss of ductility of the alloy underlying the oxide layer, in the oxygen-enriched zone, which significantly lowers the macroscopic mechanical properties.
- the application of coatings on these alloys can limit these phenomena and increase the exposure temperatures of these alloys.
- titanium-based alloys are not protected against high temperature oxidation.
- the nature of the alloy for a part is chosen according to the maximum operating temperatures and the expected lifespan according to the reduction in mechanical properties resulting from the diffusion of oxygen within the titanium-based alloy. . Titanium parts made of thin thicknesses (plates, honeycomb) are all the more sensitive to oxidation phenomena as their thickness is reduced.
- the invention relates to a method for obtaining a protective coating against oxidation of a titanium-based alloy part, comprising:
- a liquid composition on the part comprising at least (i) a first precursor which is a metallo-organic sol-gel precursor of a metallic element El or a salt of this metallic element El, said metallic element El being chosen from aluminum or zirconium, (ii) a second precursor which is an organic-inorganic sol-gel precursor of an element E2 or a salt of this element E2, said element E2 being chosen from aluminum, zirconium, titanium, tin, zinc, phosphorus or rare earths and being different from the metallic element El, and (iii) water, and
- the invention makes it possible to produce a multifunctional coating which makes it possible to protect the substrate from oxidation at temperatures of up to 700°C and therefore increase the lifespan of the parts in operation compared to the existing one.
- the invention relates to the field of wet surface treatments for metal substrates and in particular titanium alloys Ti6242 and Ti[321S. It can be applied to all titanium parts, for example, compressor disks in aircraft engines, nacelle exhaust nozzles or impellers in helicopter engines.
- the invention is based on the choice of particular precursors as described above which, in the presence of water, are capable of forming a mixed oxide network interconnected by elements El and E2 with E1-0-E2 bonds providing protection against oxidation at high temperatures, notably up to 700°C.
- the hydrolysis and condensation leading to the formation of the network can take place without adding heat at room temperature (20°C), or require heat treatment for example at a temperature greater than or equal to 150°C, in particular between 150°C and 700°C, to accelerate the kinetics of obtaining this network and to be compatible with an industrial processing rate.
- the duration of application of the possible heat treatment varies depending on the precursors used and can typically be greater than or equal to 10 minutes, for example between 10 minutes and 5 hours, in particular between 10 minutes and 2 hours.
- the water in the liquid composition provides at least part of the oxygen from the mixed oxide network.
- Water can be added in addition to the precursors, as a solvent for the latter, or can be provided by the use of first and second hydrated precursors, the liquid medium of the composition then being non-aqueous by alcoholic example.
- first and second precursors can be dissolved in the liquid composition.
- the coating obtained notably limits the quantity of oxygen diffusing within the substrate over the first 10 to 20 microns for oxidations up to 700°C at contents much lower than the contents encountered for the uncoated alloy oxidized in the same terms.
- the metallic element El is aluminum and the element E2 is a rare earth, in particular the element E2 can be yttrium.
- the metallic element El is aluminum and the element E2 is phosphorus.
- the first precursor is a metallo-organic sol-gel precursor
- it can be of general formula R xEl OR ⁇ x WHERE V is the valence of El
- x is an integer between 0 and v
- R 1 and R 2 are organic groups chosen, independently of each other, from: alkyls, branched alkyls, methacrylates, carbamates, epoxides, cycloepoxides, isocyanates, amino groups, alkylamino groups , vinyl groups, and imide groups.
- R 1 and/or R 2 groups may be identical or different.
- each R 1 and R 2 group can comprise from 1 to 4 carbon atoms. Similar considerations apply to the second precursor when it is an organic-inorganic sol-gel precursor of element E2. So in this case, the second precursor can be of general formula R 3 wy E2(OR 4 ) y where w is the valence of E2, y is an integer between 0 and w and R 3 and R 4 are selected organic groups , independently of each other, from: alkyls, branched alkyls, methacrylates, carbamates, epoxides, cycloepoxides, isocyanates, amino groups, alkylamino groups, vinyl groups, and imide groups . When several R 3 and/or R 4 groups are present, they may be identical or different. Generally speaking, each R 3 and R 4 group can comprise from 1 to 4 carbon atoms.
- At least one of the first and second precursors is an organoalkoxide sol-gel precursor with 1 to 4 carbon atoms for each alkoxy group present.
- Such a choice of precursor helps to further limit cracking of the coating in operation.
- This case corresponds to at least one of x and y being non-zero and at least one of R 2 and R 4 corresponding to an alkyl or a branched C 4 alkyl in the precursor formulas above.
- the first and second precursors are such organoalkoxide sol-gel precursors.
- the precursors may alternatively be in the form of metal salts, having a general formula EIC v or E2CI 2 W depending on whether it is the first or the second precursor, with Cil and CI2 designating a counter- ion chosen from: the nitrate ion, the acetate ion, a halide ion, for example the chloride ion, or a carbamate ion, and v and w being as defined above.
- the liquid composition does not comprise a precursor comprising silicon, such as an organosilane or an organoalkoxysilane.
- the liquid composition further comprises reactive particles, distinct from the first and second precursors, capable of reacting with oxygen or trapping it.
- Such a characteristic makes it possible to further improve the protection against oxidation conferred by the coating by having particles capable of interacting chemically with oxygen.
- reactive particles mention may be made of particles formed from the following compounds: carbides, borides, nitrides, silicides or metals, for example, Si, SiC, TiC, VB 2 , TiSi, TiB 2 , TiSi 2 , MgO, Ti, Ag, Cu.
- the liquid composition further comprises fillers, distinct from the first and second precursors, capable of filling part of the porosity of the interconnected mixed oxide network so as to hinder the diffusion of oxygen.
- the charges are inert with respect to oxygen.
- Such a characteristic makes it possible to further improve the protection against oxidation conferred by the coating by having particles capable of physically blocking the access path of oxygen through the interconnected network.
- particles formed from the following compounds: oxides or metals, for example, SiO 2 , TiO 2 , ZrO 2 , Al 2 O 3 , or BN.
- the reactive particles or fillers can have an average size D50 of between 10 nm and 500 nm.
- the reactive particles or fillers can be in the solid state in the liquid composition as well as in the coating obtained.
- the liquid composition may comprise the reactive particles or the fillers in a mass content of between 2% and 50%, or the liquid composition may comprise the reactive particles as well as the fillers present in a total mass content, corresponding to the sum of the mass contents. reactive particles and fillers, between 2% and 50%.
- the liquid composition can be deposited in contact with the titanium alloy part (without a layer interposed between this composition and the titanium alloy).
- the liquid composition consists essentially of the first precursor, the second precursor and water, optionally with a solvent other than water such as an alcohol and possibly with reactive particles or fillers as described above.
- the protective coating is completely amorphous and therefore does not have a crystalline phase.
- the part is an aircraft part, in particular a compressor part, an exhaust nozzle or part of such a nozzle, or a helicopter impeller.
- the mixture thus obtained was applied to a part made of titanium alloy type TI6242 and the coating underwent a heat treatment for 60 minutes at a temperature of 700°C. An improvement in protection against oxidation was thus obtained.
- the two solutions are then mixed: 2 volumes of the aluminum solution and 1 volume of the phosphorus-based solution.
- the mixture is left stirring for 24 hours before coating.
- the mixture thus obtained was applied to a part made of Ti6242 type titanium alloy and the coating underwent a heat treatment for 5 hours at a temperature of 600°C. An improvement in protection against oxidation was thus obtained.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Chemically Coating (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23750667.0A EP4558657A1 (fr) | 2022-07-20 | 2023-07-19 | Procédé d'obtention d'un revêtement de protection contre l'oxydation d'une pièce en alliage à base de titane |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FRFR2207441 | 2022-07-20 | ||
| FR2207441A FR3138152B1 (fr) | 2022-07-20 | 2022-07-20 | Procédé d’obtention d’un revêtement de protection contre l’oxydation d’une pièce en alliage à base de titane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024018154A1 true WO2024018154A1 (fr) | 2024-01-25 |
Family
ID=83996093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2023/051121 Ceased WO2024018154A1 (fr) | 2022-07-20 | 2023-07-19 | Procédé d'obtention d'un revêtement de protection contre l'oxydation d'une pièce en alliage à base de titane |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4558657A1 (fr) |
| FR (1) | FR3138152B1 (fr) |
| WO (1) | WO2024018154A1 (fr) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5814137A (en) * | 1996-11-04 | 1998-09-29 | The Boeing Company | Sol for coating metals |
| US7311944B2 (en) * | 2002-12-23 | 2007-12-25 | Applied Thin Films, Inc. | Aluminum phosphate coatings |
| CN109972177A (zh) * | 2018-04-26 | 2019-07-05 | 北京科技大学 | 一种长寿命铱锆系复合氧化物惰性阳极的制备方法 |
-
2022
- 2022-07-20 FR FR2207441A patent/FR3138152B1/fr active Active
-
2023
- 2023-07-19 WO PCT/FR2023/051121 patent/WO2024018154A1/fr not_active Ceased
- 2023-07-19 EP EP23750667.0A patent/EP4558657A1/fr active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5814137A (en) * | 1996-11-04 | 1998-09-29 | The Boeing Company | Sol for coating metals |
| US7311944B2 (en) * | 2002-12-23 | 2007-12-25 | Applied Thin Films, Inc. | Aluminum phosphate coatings |
| CN109972177A (zh) * | 2018-04-26 | 2019-07-05 | 北京科技大学 | 一种长寿命铱锆系复合氧化物惰性阳极的制备方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3138152A1 (fr) | 2024-01-26 |
| EP4558657A1 (fr) | 2025-05-28 |
| FR3138152B1 (fr) | 2025-10-31 |
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