EP2009132A1 - Procédé destiné à la fabrication d'une couche fonctionnelle, matériau de revêtement, son procédé de fabrication tout comme couche fonctionnelle - Google Patents
Procédé destiné à la fabrication d'une couche fonctionnelle, matériau de revêtement, son procédé de fabrication tout comme couche fonctionnelle Download PDFInfo
- Publication number
- EP2009132A1 EP2009132A1 EP07111431A EP07111431A EP2009132A1 EP 2009132 A1 EP2009132 A1 EP 2009132A1 EP 07111431 A EP07111431 A EP 07111431A EP 07111431 A EP07111431 A EP 07111431A EP 2009132 A1 EP2009132 A1 EP 2009132A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating material
- metal
- layer
- blowing agent
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000000463 material Substances 0.000 title claims abstract description 68
- 238000000576 coating method Methods 0.000 title claims abstract description 67
- 239000011248 coating agent Substances 0.000 title claims abstract description 65
- 239000002346 layers by function Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 86
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000010410 layer Substances 0.000 claims abstract description 65
- 229910052751 metal Inorganic materials 0.000 claims abstract description 64
- 239000002184 metal Substances 0.000 claims abstract description 64
- 239000002245 particle Substances 0.000 claims abstract description 50
- 239000000843 powder Substances 0.000 claims abstract description 47
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000007789 gas Substances 0.000 claims abstract description 36
- 239000000758 substrate Substances 0.000 claims abstract description 36
- 238000005187 foaming Methods 0.000 claims abstract description 22
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 22
- 238000007751 thermal spraying Methods 0.000 claims abstract description 15
- 238000005507 spraying Methods 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 238000001652 electrophoretic deposition Methods 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 4
- 230000005670 electromagnetic radiation Effects 0.000 claims abstract description 4
- 239000004604 Blowing Agent Substances 0.000 claims description 56
- 230000008569 process Effects 0.000 claims description 53
- 239000006262 metallic foam Substances 0.000 claims description 23
- 238000011049 filling Methods 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 239000003380 propellant Substances 0.000 abstract description 15
- 239000004088 foaming agent Substances 0.000 abstract 4
- 239000006260 foam Substances 0.000 description 8
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000007750 plasma spraying Methods 0.000 description 7
- 239000007858 starting material Substances 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910052987 metal hydride Inorganic materials 0.000 description 4
- 150000004681 metal hydrides Chemical class 0.000 description 4
- 241000792859 Enema Species 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 239000007920 enema Substances 0.000 description 3
- 229940095399 enema Drugs 0.000 description 3
- 229910001338 liquidmetal Inorganic materials 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000000320 mechanical mixture Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000007592 spray painting technique Methods 0.000 description 2
- -1 titanium hydride Chemical compound 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 208000004350 Strabismus Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010288 cold spraying Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010285 flame spraying Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000007749 high velocity oxygen fuel spraying Methods 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- SIAPCJWMELPYOE-UHFFFAOYSA-N lithium hydride Chemical compound [LiH] SIAPCJWMELPYOE-UHFFFAOYSA-N 0.000 description 1
- 229910000103 lithium hydride Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007613 slurry method Methods 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-N sodium;hydron;carbonate Chemical compound [Na+].OC(O)=O UIIMBOGNXHQVGW-UHFFFAOYSA-N 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229910000048 titanium hydride Inorganic materials 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000013585 weight reducing agent Substances 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
- C23C24/00—Coating starting from inorganic powder
- C23C24/02—Coating starting from inorganic powder by application of pressure only
- C23C24/04—Impact or kinetic deposition of particles
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/067—Metallic material containing free particles of non-metal elements, e.g. carbon, silicon, boron, phosphorus or arsenic
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/02—Electrophoretic coating characterised by the process with inorganic material
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
- C25D5/50—After-treatment of electroplated surfaces by heat-treatment
Definitions
- the invention relates to a method for producing a functional layer on a substrate, which is formed as a metal foam layer. Furthermore, the invention relates to a coating material for carrying out such a method, and to a method for producing the coating material. In addition, the invention relates to the use of the method for producing a functional layer and to such a functional layer.
- the metal is liquid or at least plastic and the blowing agent releases gas (in metal hydrides, this is hydrogen), which penetrates in the form of bubbles in the liquid metal and this foams.
- gas in metal hydrides, this is hydrogen
- a known and commercially available product is aluminum foam, in which aluminum powder or an aluminum alloy serves as starting material.
- aluminum foam densities in the range of 0.5-1.0 g / cm 3 can typically be achieved, which corresponds to a porosity of up to 85%.
- metal foam In addition to the enormous weight reduction that can be achieved with metal foam bodies or metal foam composites, metal foam also has other positive properties such as efficient energy absorption, especially under mechanical stress, high specific stiffness, good processability, good sound insulation properties, just to name a few ,
- metal foam is limited to the filling of cavities - for example in metal carriers - or to the production of moldings by foaming the metal in a suitably designed form.
- a method for producing a functional layer on a substrate, in which, in a first step, a foamable coating material comprising a metal powder and a blowing agent is applied in the form of a layer to the substrate, and in a second step, the layer is foamed by heat input, so that the layer is converted into a metal foam layer.
- the basic idea of the invention is therefore to use a foamable coating material as the starting material, to deposit it as a layer on a substrate and to foam this layer so as to produce a metal foam layer on the substrate.
- the metal foam can be generated as a layer on a substrate.
- any method known per se for producing layers on a substrate is suitable for the first step of the method according to the invention, for example spraying methods, thermal spraying methods, electrophoretic deposition, spray painting, screen printing or other printing methods, rolling, slurry methods, brushing, etc.
- the layer is applied to the substrate by means of a thermal spraying process, in particular by means of cold gas spraying.
- a thermal spraying process in particular by means of cold gas spraying.
- the thermal spraying process can be carried out in such a way, in particular by means of cold spraying, that the coating material does not melt during the spraying process, so that the material is first deposited as a layer on the substrate and then foamed by heat input.
- the thermal spraying process can be carried out so that the particles of the coating material are already melted or plasticized on their flight to the substrate and foamed by the blowing agent.
- the thermal spraying process can be carried out so that the particles of the coating material are already melted or plasticized on their flight to the substrate and foamed by the blowing agent.
- mixed forms of these two variants are possible.
- Another preferred method procedure is when, in the first step, the layer is applied to the substrate by means of electrophoretic deposition.
- the coating material can be electrophoretically deposited in the form of a slurry or a slip by means of methods known per se.
- the heat input is carried out by means of a heating furnace or by means of electromagnetic radiation, in particular by means of laser irradiation, or by means of electromagnetic induction.
- the coating material is a high nitrogen steel, with at most 4 weight percent nitrogen, preferably with 1 to 3 weight percent nitrogen, the nitrogen being at least partially released and foaming the metal.
- the layer is preferably applied by means of thermal spraying.
- the steel is thermally sprayed in powder form, releasing part of the nitrogen and causing the particles to "blow up". This embodiment is also possible with other high nitrogen coating materials.
- This coating material which is suitable for both thermal spraying and electrophoretic deposition, has the property that the individual particles contain both the metal and the blowing agent. It is therefore not a purely mechanical mixture of a metal powder with a propellant powder, but in the individual particles, the metal is "inseparably" connected to the propellant.
- the invention further proposes a coating material for carrying out the method according to the invention, which is a powder with particles, wherein the individual particles contain both a foamable metal and a blowing agent which can release a gas for foaming the metal.
- the particles have a metallic core, which is coated with the blowing agent (cladded).
- the propellant is in each case dispersed in the particles, so that the particles each have a metallic matrix in which the propellant is incorporated. Due to this very even distribution of the blowing agent in the metallic phase, a very efficient foaming can be achieved.
- a functional layer is proposed by the invention, prepared according to the inventive method or with a coating material according to the invention.
- Such functional layers can have different functions, e.g. As densities, stiffening, thermal insulation, sound insulation, connection of parts, etc.
- the invention also proposes a substrate with such a functional layer.
- This may be, for example, a turbine blade to which a functional layer according to the invention is applied as a squish layer or enema layer.
- the process according to the invention and the coating material according to the invention can be used in particular for Production of rubbing layers, running-in layers, seals, bearings, joining or filling material.
- Fig. 1 1 is a schematic representation of a first exemplary embodiment of the method according to the invention for producing a functional layer 1 on a substrate 2, which is preferably a metallic substrate 2.
- the function of the functional layer 1 can be, for example: increase in wear, abrasion, erosion resistance, sealing, connection of parts or materials, sound insulation, thermal protection, change in electrical or thermal conductivity, generation of squint or enema layers, etc.
- the method according to the invention comprises two steps 100, 200.
- a foamable coating material 3 which comprises a metal powder with a blowing agent, is applied to the substrate 2 in the form of a layer 1 '.
- Possible methods for producing the coating material 3, which in this embodiment is in powder form with particles 31, will be discussed further below.
- the layer 1 'by heat input the in Fig. 1 symbolically represented by the arrows 4, foamed, so that the layer 1 'in the functional layer 1, which is a metal foam layer, is converted.
- Thermal spraying processes are, for example, all forms of plasma spraying, flame spraying, HVOF processes. Furthermore, also such injection processes are known in which the process gas compared to the classic plasma spraying is "cold", for example at most a few hundred Kelvin, so that the particles are not melted in the gas stream and adhere to the substrate due to their kinetic energy. These processes, referred to in the literature as cold gas spraying or kinetic gas spraying, and hybrid processes (plasma cold gas spraying) are also to be encompassed by the term “thermal spraying” within the scope of this application, or by the term “thermal spraying”.
- the process illustrated is a plasma spraying process or a cold gas spraying process or a hybrid plasma cold gas injection process
- a spray device 5 is provided with which a process jet 6 can be generated, with which the substrate 2 is coated.
- the spray device 5 comprises a plasma torch, not shown, in the case of kinetic spraying a cold gas spraying device, not shown,
- the process jet 6 is generated with the spraying device 3 from the coating material M, a process gas or a process gas mixture G and optionally electrical energy E.
- the feed of these components E, G and coating material 3 is in Fig. 1 symbolized by the arrows 7, 8, 9
- the produced process jet 6 exits through a nozzle 10 and transports the coating material 3 in the form of the particles 31 dispersed in the process jet to the substrate 2 in order to build up the layer 1 'there.
- the electrical energy E serves to generate the plasma.
- the electrical energy E is usually used to heat the process gas G.
- the temperature of the process gas G is significantly lower than in the plasma spraying process and is usually at most a few hundred and up to 1000 ° C.
- the coating material 3 comprises both a metal powder and a blowing agent.
- the metal powder and the blowing agent may be in the form of a mixture.
- both the metal and the blowing agent may be in powder form.
- the coating material 3 may then be a mechanical mixture of the metal powder and the propellant.
- a compacted layer of metal powder and propellant powder is then generated on the substrate 2.
- the coating material is a metal powder with a blowing agent incorporated therein.
- the particles 31 contain both the metal and the propellant.
- propellants for example, metal hydrides such as lithium hydride or titanium hydride are used. These have the property that they decompose above a material-specific decomposition temperature in the metal and gaseous hydrogen.
- metal hydrides such as lithium hydride or titanium hydride are used. These have the property that they decompose above a material-specific decomposition temperature in the metal and gaseous hydrogen.
- other blowing agents such as metal nitrides or carbonates such as sodium carbonate (NaHCO 3 ), sodium bicarbonate, potassium carbonate, calcium carbonate or hydrates such as aluminum hydroxide or high nitrogen-containing compounds, for example, by rapid solidification a supersaturated melt can be generated.
- Essential for the blowing agent is that by increasing the temperature of a gas is released, which can foam the metal.
- the thermal injection process carried out in this exemplary embodiment as the first step 100 is carried out in such a way that the blowing agent releases substantially no gas during this process.
- the propellant is not heated above its decomposition temperature. Therefore, for the first step 100 in particular the cold gas spraying is particularly suitable, because in this the heat input into the particles during the injection process is significantly lower. It is no problem for a person skilled in the art to adjust the process parameters in the injection process in such a way that substantially no gas is released from the propellant during the spraying.
- the layer 1 ' is deposited on the substrate 2 in a non-foamed state.
- blowing agent depends on the metal or composition of the metallic component of the coating material.
- the blowing agent is chosen so that its decomposition temperature or the temperature above which the gas is liberated for foaming, is in the range of the melting temperature of the metallic component of the coating material 3.
- the heat input 4 for foaming the layer 1' takes place in the second step 200.
- the heat input 4 can be done in various ways.
- the substrate 2 with the layer 1 ' can be applied, for example, in a heating furnace with heat, or the layer 1' is acted upon by electromagnetic radiation, preferably by means of laser radiation.
- the heat input 4 by means of electromagnetic induction or by means of plasma treatment is possible.
- the metal in the coating material 3 or in the layer 1 ' is heated above its melting temperature and melts.
- the propellant decomposes, causing the gas to foam the now molten metal of the layer 1 'is released.
- the layer 1 ' is converted into the formed as a metal foam layer functional layer 1, which in the lowermost part of Fig. 1 is shown.
- the first step 100 and the second step 200 are at least partially performed simultaneously or simultaneously.
- the process parameters for the thermal spraying process which is here preferably a plasma spraying, are carried out so that the particles 31 are already plasticized or melted in the process jet 6 and the blowing agent releases the gas for foaming the metallic component. Consequently, the particles 31 are already at least partially foamed or "inflated” in the process jet 6 on their way to the substrate 2 and then form the functional metal foam layer 1 on the substrate 2.
- the heat input 4 thus follows through the process beam 6, for example through the Energy of the plasma or the process gas.
- thermal spraying process is performed so that it comes to an at least partial foaming of the particles 31 in the process beam 6 and then takes place an additional heat input 4 to the layer 2 located on the substrate to to complete the foaming.
- the layer 1 ' is produced on the substrate 2 by means of electrophoretic deposition.
- the powdery coating material is processed with water or another liquid to a slurry or a slurry. With this takes place the electrophoretic deposition of the layer 1 'on the substrate 2, which is connected during the electrophoretic deposition as one of the two electrodes (anode or cathode).
- the second step namely the foaming of the layer 1 'to the metal foam layer 1 takes place in a similar manner as already explained.
- this embodiment of the slip instead of by electrophoretic deposition by other methods known per se in the form of a layer are applied to the substrate, for example by means of spray painting, by applying - for example with a brush.
- all processes known per se for applying a layer to a substrate are suitable for the first step of the process according to the invention, including printing processes such as screen printing or roll-coating.
- the layer 1 ' is applied as a uniform layer.
- the invention further relates to a process for producing a coating material which is suitable for carrying out the process according to the invention, such as such a coating material, which is explained in more detail below.
- the coating material 3 is a powder comprising a metal powder having a blowing agent incorporated therein for releasing a gas for foaming the metallic component.
- the powdered coating material comprises particles 31, each containing both the metal 32 (see, eg Fig. 2 ) as well as the propellant 33. This means that at least a substantial proportion of the particles 31 of the coating material, for example at least 75% of the particles of the coating material 3, each contain both the metal 32 and the blowing agent 33.
- the two components metal 32 and blowing agent 33 each form an "inseparable" composition in the particles 31, in the sense that the individual particle 31 combines both components 32, 33 in itself.
- Fig. 2-4 three different embodiments for each one particle 31 of the coating material 3 are shown schematically.
- the particle comprises two substantially separate regions, one of which is formed by the metal 32 and the other by the blowing agent 33.
- the particle 31 has a metallic core 32 which is coated with the blowing agent 33 (cladded particle)
- the propellant 33 forms a disperse phase, which is distributed as uniformly as possible over the metallic phase 32.
- the metal 32 forms a metallic matrix in which the blowing agent 33 is embedded.
- This third embodiment is particularly preferred because it ensures a very uniform distribution of the propellant 33, which has an advantageous effect on the foaming process.
- a metal powder and a suitable blowing agent is first selected.
- suitable blowing agents such as a metal hydride powder
- the metal powder may be either an elemental metal such as aluminum or an alloy or a mixture of several metals.
- the metal is provided in the form of a powder having a predetermined viscosity in the molten state.
- the metal in the liquid state must not be so low in viscosity that the gas released by the blowing agent leaves the metal without exerting an intumescent effect.
- the metal must not be too viscous in the liquid state, because otherwise the blowing agent can not foam the liquid metal.
- the viscosity of the liquid metal has the correct value, the metal is processed into a powder in a manner known per se.
- the metallic powder is mixed with the blowing agent, which is preferably also in powder form.
- the blowing agent which is preferably also in powder form.
- a suitable for the respective metal powder blowing agent is first selected.
- An essential criterion here is that the Decay temperature of the blowing agent, ie the temperature at which the blowing agent releases the gas for foaming, is in the range of the melting temperature of the metallic powder.
- the amount of blowing agent is determined according to the desired porosity of the metal foam layer to be produced. However, the proportion of blowing agent is at most five percent by weight (wt.%). In practice, it has proven particularly useful if the proportion of blowing agent is at most 2% by weight and in particular 0.1-1% by weight.
- the blowing agent is intimately mixed with the metal powder.
- This mixture of the blowing agent and the metallic powder is then processed into the coating material 3, which is present as a powder with particles, the individual particles containing both the metal and the blowing agent (see Fig. 2-4 ).
- This processing can be carried out by methods known per se, for example in an atomizer or by spray drying and granulation. In this case, it may be advantageous to first briefly melt the powder mixture.
- FIG. 3 illustrated second embodiment in which the metallic core 32 is coated with the blowing agent 33 is prepared for example by the metal powder to be coated is introduced into a suspension of solvent, fine blowing agent powder and an adhesion promoter, preferably on an organic basis.
- the metal powder is coated with a thin layer of the blowing agent.
- a post-processing of the powdered coating material can take place, for example in order to round or round the individual particles.
- the particle size of the particles 31 is for example 50 microns.
- the necessary or suitable particle size of the particles 31 depends on the coating method used or the coating system used. In thermal spraying, the particle sizes are typically between 25 ⁇ m +/- 5 ⁇ m and 100 ⁇ m +/- 50 ⁇ m. In the Electrophoretic deposition requires significantly finer particles in the range of 5 ⁇ m and below to prevent the particles from settling too quickly.
- the coating material used is a highly nitrogen-containing compound, for example a steel containing a high nitrogen content, which means a steel which contains at most 4% by weight of nitrogen, preferably 1-3% by weight of nitrogen.
- a highly nitrogen-containing compound for example a steel containing a high nitrogen content, which means a steel which contains at most 4% by weight of nitrogen, preferably 1-3% by weight of nitrogen.
- Such high nitrogen-containing compounds generally have the property of releasing the nitrogen back into gaseous form upon heating. This discharged at heat input 4 nitrogen can then serve as a gas for foaming.
- the layer can be foamed by heat input 4 with the nitrogen present in the coating material.
- Metal foam layers made of high nitrogen steel have very good mechanical properties and provide high corrosion protection.
- the functional layer produced according to the invention which is designed as a metal foam layer, can be used in a variety of ways.
- only a few uses of the process according to the invention for producing a functional layer or of the coating material according to the invention are to be mentioned: Preparation of anticorrosive layers, hard coatings, abradable layers and enema layers, eg.
- As components of turbines such as turbine blades or segments with multiple turbine blades, production of seals, bearings, plain bearings, connecting material
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Electrochemistry (AREA)
- Inorganic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07111431A EP2009132A1 (fr) | 2007-06-29 | 2007-06-29 | Procédé destiné à la fabrication d'une couche fonctionnelle, matériau de revêtement, son procédé de fabrication tout comme couche fonctionnelle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07111431A EP2009132A1 (fr) | 2007-06-29 | 2007-06-29 | Procédé destiné à la fabrication d'une couche fonctionnelle, matériau de revêtement, son procédé de fabrication tout comme couche fonctionnelle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2009132A1 true EP2009132A1 (fr) | 2008-12-31 |
Family
ID=38328600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07111431A Withdrawn EP2009132A1 (fr) | 2007-06-29 | 2007-06-29 | Procédé destiné à la fabrication d'une couche fonctionnelle, matériau de revêtement, son procédé de fabrication tout comme couche fonctionnelle |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP2009132A1 (fr) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008058141A1 (de) * | 2008-11-20 | 2010-05-27 | Mtu Aero Engines Gmbh | Verfahren zum Herstellen einer Schaufel für einen Rotor einer Strömungsmaschine |
| DE102008058142A1 (de) * | 2008-11-20 | 2010-05-27 | Mtu Aero Engines Gmbh | Verfahren zum Herstellen und/oder Reparieren eines Rotors einer Strömungsmaschine und Rotor hierzu |
| WO2011151195A1 (fr) * | 2010-05-31 | 2011-12-08 | Siemens Aktiengesellschaft | Essieu-axe pour un véhicule sur rails comportant une protection contre les projections de pierres, et procédé de fabrication dudit essieu-axe |
| EP2410148A1 (fr) * | 2010-07-22 | 2012-01-25 | J. Eberspächer GmbH & Co. KG | Dispositif d'échappement |
| CN104087891A (zh) * | 2014-07-12 | 2014-10-08 | 卢玉锋 | 一种喷射及喷涂法制备复合金属材料的方法及装置 |
| DE102013210198A1 (de) * | 2013-05-31 | 2014-12-04 | Siemens Aktiengesellschaft | Verfahren zum Herstellen eines Metallschaums sowie Verfahren zum Herstellen von für das vorgenannte Verfahren geeigneten Partikeln |
| WO2016000004A3 (fr) * | 2014-07-03 | 2016-03-17 | Plansee Se | Procédé de fabrication d'une couche |
| GB2545481A (en) * | 2015-12-18 | 2017-06-21 | Rolls Royce Plc | An assembly and a method of using the assembly |
| DE102023117831A1 (de) * | 2023-07-06 | 2025-01-09 | BRANDENBURGISCHE TECHNISCHE UNIVERSITÄT COTTBUS-SENFTENBERG, Körperschaft des öffentlichen Rechts | Verfahren zur herstellung von metallschaum mittels plasma gerichteter energieabscheidung |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0422360A1 (fr) * | 1989-10-12 | 1991-04-17 | Vereinigte Schmiedewerke Gmbh | Application d'un acier azoté et complètement austénitique pour des éléments de construction de véhicules ferroviaires |
| DE19501659C1 (de) * | 1995-01-20 | 1996-05-15 | Daimler Benz Ag | Verfahren zur Herstellung eines Metallschaumteils |
| WO2004033746A2 (fr) * | 2002-10-04 | 2004-04-22 | Rwth Aachen | Procede pour produire des composants expanses et revetus et composants a revetement en ceramique ou en materiau dur |
| WO2006044102A2 (fr) * | 2004-10-12 | 2006-04-27 | The Regents Of The University Of California | Preparation d'une mousse metallique nanoporeuse a partir de complexes de metaux de transition a teneur elevee en azote |
-
2007
- 2007-06-29 EP EP07111431A patent/EP2009132A1/fr not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0422360A1 (fr) * | 1989-10-12 | 1991-04-17 | Vereinigte Schmiedewerke Gmbh | Application d'un acier azoté et complètement austénitique pour des éléments de construction de véhicules ferroviaires |
| DE19501659C1 (de) * | 1995-01-20 | 1996-05-15 | Daimler Benz Ag | Verfahren zur Herstellung eines Metallschaumteils |
| WO2004033746A2 (fr) * | 2002-10-04 | 2004-04-22 | Rwth Aachen | Procede pour produire des composants expanses et revetus et composants a revetement en ceramique ou en materiau dur |
| WO2006044102A2 (fr) * | 2004-10-12 | 2006-04-27 | The Regents Of The University Of California | Preparation d'une mousse metallique nanoporeuse a partir de complexes de metaux de transition a teneur elevee en azote |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008058141A1 (de) * | 2008-11-20 | 2010-05-27 | Mtu Aero Engines Gmbh | Verfahren zum Herstellen einer Schaufel für einen Rotor einer Strömungsmaschine |
| DE102008058142A1 (de) * | 2008-11-20 | 2010-05-27 | Mtu Aero Engines Gmbh | Verfahren zum Herstellen und/oder Reparieren eines Rotors einer Strömungsmaschine und Rotor hierzu |
| RU2570525C2 (ru) * | 2010-05-31 | 2015-12-10 | Сименс Акциенгезелльшафт | Ось колесной пары для рельсового транспортного средства, снабженная защитой от ударов камней, и способ ее изготовления |
| US9315072B2 (en) * | 2010-05-31 | 2016-04-19 | Siemens Aktiengesellschaft | Bogie shaft for a railway vehicle having a stone guard and method for producing same |
| CN103003127A (zh) * | 2010-05-31 | 2013-03-27 | 西门子公司 | 具有石块防护装置的用于铁路车辆的轮轴及其制造方法 |
| US20130207409A1 (en) * | 2010-05-31 | 2013-08-15 | Siemens Aktiengesellschaft | Bogie shaft for a railway vehicle having a stone guard and method for producing same |
| WO2011151195A1 (fr) * | 2010-05-31 | 2011-12-08 | Siemens Aktiengesellschaft | Essieu-axe pour un véhicule sur rails comportant une protection contre les projections de pierres, et procédé de fabrication dudit essieu-axe |
| CN103003127B (zh) * | 2010-05-31 | 2016-02-03 | 西门子公司 | 具有石块防护装置的用于铁路车辆的轮轴及其制造方法 |
| US8783414B2 (en) | 2010-07-22 | 2014-07-22 | Eberspächer Exhaust Technology GmbH & Co. KG | Exhaust system |
| EP2410148A1 (fr) * | 2010-07-22 | 2012-01-25 | J. Eberspächer GmbH & Co. KG | Dispositif d'échappement |
| DE102013210198A1 (de) * | 2013-05-31 | 2014-12-04 | Siemens Aktiengesellschaft | Verfahren zum Herstellen eines Metallschaums sowie Verfahren zum Herstellen von für das vorgenannte Verfahren geeigneten Partikeln |
| WO2014191155A1 (fr) * | 2013-05-31 | 2014-12-04 | Siemens Aktiengesellschaft | Procédé de fabrication d'une mousse métallique ainsi que procédé de fabrication de particules adéquates pour ledit procédé |
| CN107027315A (zh) * | 2014-07-03 | 2017-08-08 | 攀时奥地利公司 | 用于制造层的方法 |
| WO2016000004A3 (fr) * | 2014-07-03 | 2016-03-17 | Plansee Se | Procédé de fabrication d'une couche |
| JP2017531736A (ja) * | 2014-07-03 | 2017-10-26 | プランゼー エスエー | 層の製造方法 |
| US10415141B2 (en) | 2014-07-03 | 2019-09-17 | Plansee Se | Process for producing a layer |
| CN107027315B (zh) * | 2014-07-03 | 2020-02-14 | 攀时奥地利公司 | 用于制造层的方法 |
| CN104087891A (zh) * | 2014-07-12 | 2014-10-08 | 卢玉锋 | 一种喷射及喷涂法制备复合金属材料的方法及装置 |
| GB2545481A (en) * | 2015-12-18 | 2017-06-21 | Rolls Royce Plc | An assembly and a method of using the assembly |
| US10155236B2 (en) | 2015-12-18 | 2018-12-18 | Rolls-Royce Plc | Cold spray nozzle assembly and a method of depositing a powder material onto a surface of a component using the assembly |
| DE102023117831A1 (de) * | 2023-07-06 | 2025-01-09 | BRANDENBURGISCHE TECHNISCHE UNIVERSITÄT COTTBUS-SENFTENBERG, Körperschaft des öffentlichen Rechts | Verfahren zur herstellung von metallschaum mittels plasma gerichteter energieabscheidung |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2009132A1 (fr) | Procédé destiné à la fabrication d'une couche fonctionnelle, matériau de revêtement, son procédé de fabrication tout comme couche fonctionnelle | |
| EP1083013B1 (fr) | Préparation de corps métalliques moussables et mousses métalliques | |
| EP2794152B1 (fr) | Procédé de fabrication d'un composant compact et composant produit au moyen dudit procédé | |
| EP1251985B1 (fr) | Sphere creuse, et procede de production de spheres creuses et de composants legers constitues de spheres creuses | |
| EP0911426B1 (fr) | Production de pièces moulées | |
| DE19501659C1 (de) | Verfahren zur Herstellung eines Metallschaumteils | |
| DE3242543A1 (de) | Verfahren zum herstellen von schichtwerkstoff mit einer auf einer traegerschicht aufgebrachten funktionsschicht und nach diesem verfahren hergestellter schichtwerkstoff | |
| DE19747386A1 (de) | Verfahren zum thermischen Beschichten von Substratwerkstoffen | |
| WO2008067962A2 (fr) | Réparation et/ou modification du contour d'une surface de moulage d'un outil de moulage | |
| DE102015115963A1 (de) | Verfahren und Vorrichtung zur additiven Fertigung eines Formkörpers aus einem metallischen Werkstoffgemisch | |
| EP2576863B1 (fr) | Procédé de réalisation d'une couche par injection de gaz froid et utilisation d'une telle couche | |
| EP2981380A1 (fr) | Procédé de fabrication d'une mousse métallique ainsi que procédé de fabrication de particules adéquates pour ledit procédé | |
| DE3224305A1 (de) | Verfahren zur herstellung einer spannungsunempfindlichen keramischen thermischen sperrschicht auf einem metallsubstrat | |
| EP2714963B1 (fr) | Procédé d'injection de gaz froid présentant une meilleure adhérence et une porosité de couche réduite | |
| EP0911423B1 (fr) | Méthode pour assembler des pièces | |
| EP2343143A2 (fr) | Procédé de fabrication de composants en métaux réfractaires | |
| DE102006029070B3 (de) | Verfahren zum Beschichten eines Bauteils, in dessen Oberfläche Löcher vorgesehen sind | |
| DE19608719A1 (de) | Verfahren zur Herstellung von Formteilen | |
| EP3473749B1 (fr) | Procédé d'application d'une couche sur un composant et composant fabriqué selon ledit procédé | |
| DE102020206009A1 (de) | Verfahren zur Erzeugung einer stoffschlüssigen Verbindung im Verbundguss | |
| WO2011057615A1 (fr) | Buse de projection à froid et dispositif de projection à froid muni d'une telle buse de projection | |
| WO2023104778A1 (fr) | Procédé de fabrication d'une couche poreuse ou d'un corps poreux | |
| AT14988U1 (de) | Komponente einer Kunststoffverarbeitungsmaschine | |
| DE102016213537A1 (de) | Verfahren zur Herstellung eines Stromsammlers für eine Brennstoffzelle und Brennstoffzelle | |
| DE19608845A1 (de) | Schichtwerkstoff aus monotektischen bzw. Dispersionslegierungen und Verfahren zur Herstellung |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL BA HR MK RS |
|
| AKX | Designation fees paid | ||
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: 8566 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20090701 |