EP2956566B1 - Verfahren zur ablagerung einer korrosionsschutzbeschichtung - Google Patents
Verfahren zur ablagerung einer korrosionsschutzbeschichtung Download PDFInfo
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- EP2956566B1 EP2956566B1 EP14708611.0A EP14708611A EP2956566B1 EP 2956566 B1 EP2956566 B1 EP 2956566B1 EP 14708611 A EP14708611 A EP 14708611A EP 2956566 B1 EP2956566 B1 EP 2956566B1
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- cement
- substrate
- coating
- recovered
- spherical particles
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- 238000000576 coating method Methods 0.000 title claims description 43
- 239000011248 coating agent Substances 0.000 title claims description 39
- 238000000034 method Methods 0.000 title claims description 38
- 238000000151 deposition Methods 0.000 title claims description 13
- 239000004568 cement Substances 0.000 claims description 37
- 239000000758 substrate Substances 0.000 claims description 34
- 239000000843 powder Substances 0.000 claims description 30
- 239000000203 mixture Substances 0.000 claims description 26
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 16
- 239000003701 inert diluent Substances 0.000 claims description 15
- 229910000943 NiAl Inorganic materials 0.000 claims description 13
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 claims description 13
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- 239000002243 precursor Substances 0.000 claims description 12
- 239000012798 spherical particle Substances 0.000 claims description 12
- 230000004907 flux Effects 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 8
- 230000003213 activating effect Effects 0.000 claims description 7
- 239000012298 atmosphere Substances 0.000 claims description 7
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 5
- 230000008021 deposition Effects 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000000133 mechanosynthesis reaction Methods 0.000 claims description 3
- 229910000624 NiAl3 Inorganic materials 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 238000005476 soldering Methods 0.000 claims 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000005137 deposition process Methods 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000012300 argon atmosphere Substances 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000005255 carburizing Methods 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000008246 gaseous mixture Substances 0.000 description 2
- 238000001033 granulometry Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910000601 superalloy Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000007970 homogeneous dispersion Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000006259 organic additive Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 238000001947 vapour-phase growth Methods 0.000 description 1
Images
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
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/34—Embedding in a powder mixture, i.e. pack cementation
- C23C10/36—Embedding in a powder mixture, i.e. pack cementation only one element being diffused
- C23C10/48—Aluminising
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/34—Embedding in a powder mixture, i.e. pack cementation
- C23C10/52—Embedding in a powder mixture, i.e. pack cementation more than one element being diffused in one step
-
- 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
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/34—Embedding in a powder mixture, i.e. pack cementation
- C23C10/52—Embedding in a powder mixture, i.e. pack cementation more than one element being diffused in one step
- C23C10/54—Diffusion of at least chromium
- C23C10/56—Diffusion of at least chromium and at least aluminium
-
- 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
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/60—After-treatment
Definitions
- the present invention relates to the production of a protective coating against corrosion on a substrate having cavities.
- Thermal spraying techniques such as plasma or flame projection involves sending molten or partially melted particles, at high speed, to the surface of the part to be protected.
- the coating is constructed in successive layers. These techniques can only be used on open or easily accessible surfaces.
- the vapor phase deposition techniques use a gaseous precursor of the coating to be produced.
- This precursor may be produced in the direct vicinity of the surface to be coated (carburized pack) or transported via a gas to the surface to be coated (out of pack, CVD from a bottle or gaseous mixture, etc.).
- the main difficulties encountered for the carburizing pack are related to the filling of parts having a complex geometry or very small dimensions (a few mm) with the cementum powder (precursor mixture of the coating).
- the main limitations of the techniques using gaseous precursors concern the rapid depletion of the gaseous mixture in reactive species resulting in heterogeneities of chemical composition and / or thickness of the coating. It is very difficult to obtain a homogeneous coating on large surfaces or in complex geometries.
- Physical vapor deposition techniques involve evaporating the component (s) of the coating prior to condensing them on the surface of the part to be coated. Evaporation is usually done by bombarding a target with a high energy beam (electrons or ions). The distance between the target and the surface to be coated is a major parameter for the homogeneity of the thickness of the deposit. These techniques are very difficult to use on parts of complex geometry or on non-accessible surfaces.
- the carburizing pack is a very old process for making a coating on a part.
- the latter is placed in a bed of cementum powder, which is a mixture of products capable of generating a reactive atmosphere at high temperature.
- This cementum should be placed close to the surface to be coated to produce a homogeneous coating in thickness and chemical composition.
- Coatings are conventionally made on parts having cavities of a few centimeters by filling the part with the cementum powder.
- a solution of the present invention consists in the use of a cementum in a pack-cementation deposition process on a substrate having cavities of minimum equivalent diameter e cm , characterized in that the cementum consists of spherical particles presenting each a diameter d such that d ⁇ e cm / 10.
- the size of the cement particles can be measured by laser granulometry or sieves to ensure that no particle or agglomerate of cement particles exceeds the maximum size required.
- a disagglomeration step may be necessary to "break" the agglomerates of elementary particles that may exceed the maximum size required.
- the equivalent diameters of the particles are conventionally between 1 .mu.m to 1 mm, preferably between 1 .mu.m and 100 .mu.m.
- the equivalent diameter is defined as the diameter of the cylinder or circle that fits into the smallest section giving access to the surface to be coated. Indeed, the latter does not necessarily have a standard form.
- the inert compound does not chemically intervene in the formation of the coating. Its main function is to avoid the densification of the cementum which would prevent its elimination after deposit. It is usually a very stable refractory compound. Its content is the complement of the other two.
- the solution according to the invention allows the realization of a deposit by pack cementation on parts of complex geometry and in inaccessible cavities.
- the cementum used in the context of the invention has a very good flowability to fill the smallest gaps (diameter ⁇ 1mm) and distribute evenly within the entire cavity to be coated.
- the particle size distribution and the morphology of the cement particles are the main parameters to ensure a good flowability of the mixture.
- the particle size distribution is adjusted according to the equivalent diameter of the smallest passage of the cavity.
- morphology spherical shapes which can be obtained by different grinding techniques for powders or powder mixture.
- An atomization treatment of the powder mixture may also be used to form spheres of the powder mixture.
- organic additives may be used to ensure a good cohesion of the spheres and a homogeneous dispersion of the elements of the mixture.
- the present invention also relates to two methods of depositing a coating by pack cementation on a substrate having cavities of minimum equivalent diameter e cm .
- step c) the substrate-cement element is heated at about 650 ° C. for at least 6 hours.
- the figure 1 schematizes the different steps of the first method according to the invention.
- the first process consists in the use of a powder mixture consisting of the activating agent (5%), an inert diluent (Alumina, silica, etc.) and a metal to be deposited, a metal powder ( between 10 and 60%) which can be either pure aluminum or an Al + NiAl or AlCr mixture and whose particles may or may not have been "pre-activated" by mechano-synthesis.
- the granulometry of the mixture is then adjusted so that it can be introduced into the channels by a vibratory system.
- the assembly is then brought to a temperature below the melting temperature of the metal to be deposited for a period of at least 6 hours.
- the assembly is again subjected to a vibration step for extracting the residual powder.
- the coating consists of a surface enrichment of aluminum substrate whose composition is close to NiAl 3 .
- the thicknesses obtained vary between 5 and 10 microns depending on the time during which the first heating step was carried out.
- the part thus coated is brought to a temperature of between 900 ° C. and 1150 ° C., preferably greater than 980 ° C., so as to obtain the NiAl composition in a superficial edge of thickness ranging from 15 to 25 ⁇ m ( figure 3 ).
- the figure 2 schematizes the different steps of the second method according to the invention.
- the second method consists in the use of a pulverulent mixture consisting of a low melting point stripping flux (K 3 AlF 6 -KAlF 4 ) which is the element which has the lowest melting point of cement mixture and particles of an inert diluent and a pure metal powder or aluminum alloy. (10 to 60% of metal powders, 40% of stripping flux and the balance of inert diluent).
- K 3 AlF 6 -KAlF 4 low melting point stripping flux
- the whole is introduced by vibration as in the case of the first method and is heated to a high temperature, lower than the melting of the metal phase, but greater than that of the stripping flux for a time that varies from a few minutes to one or two hours. .
- the coating is obtained either under primary vacuum or inert controlled atmosphere (argon).
- the residues are then extracted by washing directly after the heat treatment step.
- the apparatus can be washed with a chemical solution (acidified aqueous).
- the coating thus obtained corresponds to a phase of composition close to NiAl 3 which can be converted into NiAl in a subsequent annealing step at a temperature between 900 ° C and 1150 ° C, preferably at 980 ° C.
- the appearance of the coating is shown in FIG.
- the powder mixtures can be stored for long periods of time in a desiccator under a primary vacuum or in a dry chamber under a neutral gas sweep and are immediately ready for use.
- the inert diluent is chosen from powders of refractory inert materials, more preferably from refractory mineral oxides, such as alumina, silica, magnesia and mixtures thereof, which are commonly used in cementation.
- refractory inert materials more preferably from refractory mineral oxides, such as alumina, silica, magnesia and mixtures thereof, which are commonly used in cementation.
- the substrate which can be provided with such a coating is generally chosen from metal substrates, for example iron or nickel base, alloy (s) substrates or superalloy (s), composite substrates comprising one or more metals and / or alloy (s) and / or superalloy (s) containing Ni to react with the deposited Al and form NiAl.
- metal substrates for example iron or nickel base, alloy (s) substrates or superalloy (s), composite substrates comprising one or more metals and / or alloy (s) and / or superalloy (s) containing Ni to react with the deposited Al and form NiAl.
- the substrate may be previously superficially enriched in Ni for example by electrolytic deposition.
- the treatments are generally carried out under a neutral or reducing atmosphere, for example under an atmosphere of hydrogen and / or argon, preferably under an argon atmosphere, or under an argon atmosphere with, for example, from 5 to 10% of argon. hydrogen.
- the pressure used during the treatment may be atmospheric pressure or a reduced pressure, for example a pressure of 10 -2 atm of argon.
- the coatings obtained by the processes according to the invention give the substrates an excellent resistance to corrosion, even within each substrate cavity regardless of its size.
- the photos of the figure 3 show two samples of HR120 alloy, one (the one on the right) coated with the coating developed according to the second method according to the invention and the other (the left one) uncoated. These samples were subjected to a corrosive atmosphere consisting of (in% vol.): 15% CO, 5% CO 2 , 55% H 2 , 25% H 2 O, at a pressure of 21 bar absolute and a temperature of 650 ° C. After 4700 hours of exposure, it is clear that the coating deposited according to the second method of the invention protects the alloy from corrosion.
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Claims (19)
- Verwendung eines Zements in einem Prozess zur Ablagerung durch Packzementierung auf einem Substrat, das Hohlräume mit einem minimalen äquivalenten Durchmesser ecm aufweist, dadurch gekennzeichnet, dass der Zement aus sphärischen Partikeln besteht, die jeweils einen Durchmesser d wie z.B. d ≤ ecm/10 aufweisen.
- Verwendung nach Anspruch 1, dadurch gekennzeichnet, dass der Zement aus sphärischen Partikeln besteht, die jeweils einen Durchmesser d wie z.B. d ≤ ecm/10 aufweisen.
- Verwendung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass der Zement einen Vorläufer des Elements, das abgelagert werden soll, ein Aktivierungsmittel und ein inertes Verdünnungsmittel umfasst.
- Verwendung nach Anspruch 3, dadurch gekennzeichnet, dass der Zement Folgendes umfasst:- 10 bis 60 % Metallpulver als Vorläufer des Elements, das abgelagert werden soll,- 5 bis 40 % Aktivierungsmittel, und- einen Zusatz mit 100 % inertem Verdünnungsmittel.
- Verwendung nach Anspruch 4, dadurch gekennzeichnet, dass das Metallpulver aus Aluminium oder aus einer Mischung aus Aluminium mit Partikeln aus NixAly oder aus Alx'Cry' besteht.
- Verwendung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass der Zement einen Vorläufer des Elements, das abgelagert werden soll, einen Beizfluss und ein inertes Verdünnungsmittel umfasst.
- Verwendung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Zement ein organisches oder anorganisches Bindemittel umfasst.
- Verwendung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Substrat ein metallischer Wärmetauscher ist.
- Verfahren zur Ablagerung einer Beschichtung durch Packzementierung auf einem Substrat, das Hohlräume mit einem minimalen äquivalenten Durchmesser ecm aufweist, umfassend die folgenden sukzessiven Schritte:a) Herstellen eines Zements, der aus sphärischen Partikeln eines Aktivierungsmittels, eines inerten Verdünnungsmittels und eines Metallpulvers besteht, wobei die sphärischen Partikel jeweils einen Durchmesser d wie z.B. d ≤ ecm/10 aufweisen;b) Einführen in die Hohlräume des Substrats des Zements, hergestellt in Schritt a), durch ein Vibrationssystem;c) Erhitzen der Einheit Substrat-Zement auf eine Temperatur unter der Fusionstemperatur des Metallpulvers während einer Dauer von mindestens 6 Stunden bei etwa 650 °C für das Aluminium.d) Abkühlen der Einheit Substrat-Zement auf die Umgebungstemperature) Unterziehen des Zements einem Schritt des Vibrierens, um den Zementrest zu beseitigen,f) Erhitzen der Einheit Substrat-Zement auf eine Temperatur, die zwischen 900 °C und 1150 °C liegt, vorzugsweise über 980 °C, undg) Wiedergewinnen eines Substrats, das auf seiner Einheit eine Beschichtung aufweist.
- Verfahren zur Ablagerung nach Anspruch 9, dadurch gekennzeichnet, dass die Partikel des Zements, hergestellt in Schritt a), durch mechanische Synthese voraktiviert sind.
- Verfahren zur Ablagerung nach einem der Ansprüche 9 oder 10, dadurch gekennzeichnet, dass die Beschichtung, wiedergewonnen in Schritt g) NiAl umfasst.
- Verfahren zur Ablagerung nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, dass die Beschichtung, wiedergewonnen in Schritt g), eine Dicke aufweist, die zwischen 15 und 25 µm liegt.
- Verfahren zur Ablagerung einer Beschichtung durch Packzementierung auf einem Substrat, das Hohlräume mit einem minimalen äquivalenten Durchmesser ecm aufweist, umfassend die folgenden sukzessiven Schritte:a) Herstellen eines Zements, der aus einem Beizfluss und sphärischen Partikeln eines inerten Verdünnungsmittels und eines Metallpulvers besteht, wobei die sphärischen Partikel jeweils einen Durchmesser d wie z.B. d ≤ ecm/10 aufweisen;b) Einführen in die Hohlräume des Substrats des Zements, hergestellt in Schritt a), durch ein Vibrationssystem;c) Erhitzen der Einheit Substrat-Zement auf eine Temperatur über der Fusionstemperatur des Beizflusses unter primärem Vakuum oder unter inerter Atmosphäre (Ar) während einer Dauer, die zwischen 10 Minuten und 2 Stunden liegt;d) Abkühlen der Einheit Substrat-Zement auf Umgebungstemperature) Unterziehen des Zements einem Schritt des Waschens, um den Zementrest zu beseitigen;f) Wiedergewinnen eines Substrats, das auf seiner Einheit eine Beschichtung aufweist.
- Verfahren nach Anspruch 13, dadurch gekennzeichnet, dass der Schritt e) des Waschens mit Hilfe einer wässrigen, abgesäuerten Lösung durchgeführt wird.
- Verfahren nach einem der Ansprüche 13 oder 14, dadurch gekennzeichnet, dass die Beschichtung, wiedergewonnen in Schritt f), NiAl3 umfasst.
- Verfahren nach einem der Ansprüche 13 oder 14, dadurch gekennzeichnet, dass das Verfahren vor dem Schritt e) einen Schritt des Erhitzens der Einheit Substrat-Zement auf eine Temperatur umfasst, die zwischen 900 °C und 1150 °C liegt, vorzugsweise über 980 °C.
- Verfahren nach Anspruch 16, dadurch gekennzeichnet, dass die Beschichtung, wiedergewonnen in Schritt f), NiAl umfasst.
- Verfahren nach einem der Ansprüche 13 bis 17, dadurch gekennzeichnet, dass die Beschichtung, wiedergewonnen in Schritt f), eine Dicke aufweist, die zwischen 5 µm und 200 µm liegt, vorzugsweise zwischen 5 µm und 80 µm.
- Verfahren nach einem der Ansprüche 9 bis 18, dadurch gekennzeichnet, dass das Substrat ein metallischer Wärmetauscher ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1351227A FR3001976B1 (fr) | 2013-02-13 | 2013-02-13 | Procede de depot d'un revetement contre la corrosion |
PCT/FR2014/050193 WO2014125187A1 (fr) | 2013-02-13 | 2014-02-04 | Procede de depot d'un revetement contre la corrosion |
Publications (2)
Publication Number | Publication Date |
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EP2956566A1 EP2956566A1 (de) | 2015-12-23 |
EP2956566B1 true EP2956566B1 (de) | 2016-11-23 |
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ID=48570257
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Application Number | Title | Priority Date | Filing Date |
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EP14708611.0A Active EP2956566B1 (de) | 2013-02-13 | 2014-02-04 | Verfahren zur ablagerung einer korrosionsschutzbeschichtung |
Country Status (7)
Country | Link |
---|---|
US (1) | US20150368782A1 (de) |
EP (1) | EP2956566B1 (de) |
JP (1) | JP2016510089A (de) |
CN (1) | CN105164303B (de) |
FR (1) | FR3001976B1 (de) |
WO (1) | WO2014125187A1 (de) |
ZA (1) | ZA201505484B (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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FR3062324B1 (fr) * | 2017-01-30 | 2019-03-22 | Safran Aircraft Engines | Procede de fabrication de pieces realisees en metallurgie des poudres comportant l’application d'un revetement |
FR3133769A1 (fr) | 2022-03-23 | 2023-09-29 | Fives Cryo | Procede de revetement de surfaces internes d’un echangeur par un solide pulverulent |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1379731A (en) * | 1971-01-05 | 1975-01-08 | Albright & Wilson | Chromising ferrous metal substrates |
DE2438405A1 (de) * | 1973-08-13 | 1975-02-27 | Albright & Wilson | Unlegierte, kohlenstoffarme, niobhaltige staehle und deren inchromierte erzeugnisse |
US4156042A (en) * | 1975-04-04 | 1979-05-22 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Coating articles having fine bores or narrow cavities in a pack-cementation process |
JPH07113146B2 (ja) * | 1985-01-23 | 1995-12-06 | 株式会社日立製作所 | アルミニウムまたはその合金の表面処理方法 |
JPS62212100A (ja) * | 1986-03-14 | 1987-09-18 | Canon Inc | 粉末充填方法及び該方法に使用する装置 |
DE4035790C1 (de) * | 1990-11-10 | 1991-05-08 | Mtu Muenchen Gmbh | |
EP0496935B1 (de) * | 1991-01-31 | 1995-04-19 | General Electric Company | Aluminisieren von Gegenständen, geschützt durch ein thermisch gesperrtes Überzugssystem |
US5441767A (en) * | 1994-01-26 | 1995-08-15 | United Technologies Corporation | Pack coating process for articles containing small passageways |
JPH10298779A (ja) * | 1997-04-25 | 1998-11-10 | Hitachi Ltd | ガスタービンバケットの製造方法 |
DE19856901C2 (de) * | 1998-12-10 | 2003-01-16 | Mtu Aero Engines Gmbh | Verfahren zum Beschichten von Hohlkörpern |
US6299935B1 (en) * | 1999-10-04 | 2001-10-09 | General Electric Company | Method for forming a coating by use of an activated foam technique |
JP2001254163A (ja) * | 2000-12-18 | 2001-09-18 | Ichiro Kawakatsu | NiまたはNi合金基体に対するAlまたはAl合金の被覆法 |
US7094445B2 (en) * | 2002-05-07 | 2006-08-22 | General Electric Company | Dimensionally controlled pack aluminiding of internal surfaces of a hollow article |
GB0409486D0 (en) * | 2004-04-28 | 2004-06-02 | Diffusion Alloys Ltd | Coatings for turbine blades |
US7252480B2 (en) * | 2004-12-17 | 2007-08-07 | General Electric Company | Methods for generation of dual thickness internal pack coatings and objects produced thereby |
JP5403881B2 (ja) * | 2007-07-10 | 2014-01-29 | ゼネラル・エレクトリック・カンパニイ | ジェットエンジンブレードのサーペンタイン冷却通路のアルミナイジング法 |
FR2921937B1 (fr) * | 2007-10-03 | 2009-12-04 | Snecma | Procede d'aluminisation en phase vapeur d'une piece metallique de turbomachine |
US8501273B2 (en) * | 2008-10-02 | 2013-08-06 | Rolls-Royce Corporation | Mixture and technique for coating an internal surface of an article |
JP2010112671A (ja) * | 2008-11-10 | 2010-05-20 | Showa Denko Kk | 熱交換器用チューブの製造方法 |
-
2013
- 2013-02-13 FR FR1351227A patent/FR3001976B1/fr not_active Expired - Fee Related
-
2014
- 2014-02-04 US US14/767,795 patent/US20150368782A1/en not_active Abandoned
- 2014-02-04 WO PCT/FR2014/050193 patent/WO2014125187A1/fr active Application Filing
- 2014-02-04 CN CN201480008464.5A patent/CN105164303B/zh not_active Expired - Fee Related
- 2014-02-04 JP JP2015557491A patent/JP2016510089A/ja active Pending
- 2014-02-04 EP EP14708611.0A patent/EP2956566B1/de active Active
-
2015
- 2015-07-30 ZA ZA2015/05484A patent/ZA201505484B/en unknown
Also Published As
Publication number | Publication date |
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ZA201505484B (en) | 2016-04-28 |
EP2956566A1 (de) | 2015-12-23 |
FR3001976B1 (fr) | 2015-02-20 |
CN105164303A (zh) | 2015-12-16 |
FR3001976A1 (fr) | 2014-08-15 |
WO2014125187A1 (fr) | 2014-08-21 |
US20150368782A1 (en) | 2015-12-24 |
JP2016510089A (ja) | 2016-04-04 |
CN105164303B (zh) | 2018-04-20 |
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