Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
  • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
  • B22F10/30—Process control
  • B22F10/36—Process control of energy beam parameters
  • B22F10/366—Scanning parameters, e.g. hatch distance or scanning strategy
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
  • B01D67/0039—Inorganic membrane manufacture
  • B01D67/0041—Inorganic membrane manufacture by agglomeration of particles in the dry state
  • B01D67/00411—Inorganic membrane manufacture by agglomeration of particles in the dry state by sintering
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
  • B01D67/0039—Inorganic membrane manufacture
  • B01D67/0041—Inorganic membrane manufacture by agglomeration of particles in the dry state
  • B01D67/00415—Inorganic membrane manufacture by agglomeration of particles in the dry state by additive layer techniques, e.g. selective laser sintering [SLS], selective laser melting [SLM] or 3D printing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
  • B01D67/0039—Inorganic membrane manufacture
  • B01D67/0053—Inorganic membrane manufacture by inducing porosity into non porous precursor membranes
  • B01D67/006—Inorganic membrane manufacture by inducing porosity into non porous precursor membranes by elimination of segments of the precursor, e.g. nucleation-track membranes, lithography or laser methods
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
  • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
  • B22F10/20—Direct sintering or melting
  • B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
  • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
  • B22F10/30—Process control
  • B22F10/38—Process control to achieve specific product aspects, e.g. surface smoothness, density, porosity or hollow structures
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
  • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
  • B22F3/10—Sintering only
  • B22F3/11—Making porous workpieces or articles
  • B22F3/1103—Making porous workpieces or articles with particular physical characteristics
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
  • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
  • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
  • B29C64/10—Processes of additive manufacturing
  • B29C64/141—Processes of additive manufacturing using only solid materials
  • B29C64/153—Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
  • F28F13/003—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by using permeable mass, perforated or porous materials
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2323/00—Details relating to membrane preparation
  • B01D2323/34—Use of radiation
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
  • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B33—ADDITIVE MANUFACTURING TECHNOLOGY
  • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
  • B33Y10/00—Processes of additive manufacturing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B33—ADDITIVE MANUFACTURING TECHNOLOGY
  • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
  • B33Y80/00—Products made by additive manufacturing
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
  • Y02P10/00—Technologies related to metal processing
  • Y02P10/25—Process efficiency

Definitions

• the present invention relates to a method for the powder bed-based, additive manufacturing of a filigree structure with a predetermined porosity. Furthermore, a corresponding irradiation strategy or associated production instructions, a corresponding computer program product and a functional structure produced by the method described are specified.
• the structure is intended, for example, for use in components that can be cooled or are to be cooled, such as turbine parts exposed to hot gas, as a membrane, in particular a mixed-conducting membrane or filter membrane, and/or as a functional medium in heat exchangers or heat transfer.
• the structure may be another component.
• Hot gas parts of gas turbines are z. B. be constantly developed to ever higher operating temperatures.
• the corresponding metallic materials have to be cooled more and more reliably and efficiently.
• additive manufacturing processes colloquially also referred to as “3D printing”
• SLM selective powder bed process Laser melting
• SLS laser sintering
• EBM electron beam melting
• a method for the additive production of a three-dimensional object is known, for example, from WO 2014/202352 A1.
• additive manufacturing processes have proven to be particularly advantageous for complex or delicately designed components, for example labyrinthine structures, cooling structures and/or lightweight structures.
• additive manufacturing is advantageous due to a particularly short chain of process steps, since a manufacturing or manufacturing step of a component can be carried out largely on the basis of a corresponding CAD file and the selection of corresponding manufacturing or irradiation parameters.
• One aspect of the present invention relates to a method for powder bed-based additive manufacturing of a filigree structure which has a predetermined porosity, with a plurality of parallel irradiation vectors being selected for the selective irradiation of a powder layer for the production of the structure, with melt paths being produced by the parallel irradiation vectors (which then expediently produce a corresponding structure) are free of overlap, ie preferably do not touch or overlap, and the parallel irradiation vectors continue to run parallel to the structure to be formed by them.
• filigree preferably means in the present case that the structure is designed to be delicate and/or thin-walled, with each wall or each section preferably being provided with the predetermined porosity.
• the defined porosity should preferably allow for functional permeation during operation of the structure in a component a medium or gas are used. Due to the predetermined porosity properties of the structure, the structure can advantageously be provided with tailored functional properties, e.g. B. a cooling capacity, heat transfer or catalytic properties or permeation properties are equipped.
• one aspect of the present invention can already be seen as providing an irradiation strategy, in particular an irradiation pattern for the method described, as a production requirement, preferably by way of preparation for production by CAM, with the irradiation strategy for the powder layers being carried out by a laser or electron beam can be specified in a computer-implemented manner.
• the structure constructed in this way can, for example, be given dimensionally stable properties by subsequent contour irradiation and used accordingly in a functional component.
• the solution described can advantageously be achieved in that complex and arbitrary or arbitrarily or randomly shaped component areas, such as walls or the like, can be produced in a simple manner.
• the complexity of a strictly ordered lattice-like irradiation or production can advantageously be circumvented.
• the structure or a component containing the structure can be provided with a certain randomness in its porosity or permeability in some areas.
• the corresponding structure can be produced close to the contour by defining or selecting and implementing the parallel irradiation vectors, since the selected irradiation vectors all run parallel to the contour of the structure.
• a course of the irradiation vectors or the course of the structure to be formed by them is bent or curved—for example viewed in plan view of the corresponding layer plane.
• the course of the irradiation vectors or the course of the structure to be formed by them is wavy.
• the course of the radiation vectors or the course of the structure to be formed by them corresponds to any random or random shape, such as a type of freehand shape.
• each of the parallel walls so produced preferably has the predetermined porosity in the finished structure.
• an irradiation strategy for producing a layer of the structure has multiple stages. This means that further irradiation vectors can preferably be selected for the solidification of each layer for the component, as described below.
• irradiation vectors perpendicular in layers are selected, which cross the parallel irradiation vectors and structurally connect a weld path and/or structure produced by these, ie the parallel vectors.
• the perpendicular irradiation vectors are normal vectors that extend perpendicularly or orthogonally from a first-side outer vector of the parallel irradiation vectors (on a first side) away from the first side and towards a second, opposite side of the parallel irradiation vectors.
• the sides mentioned (first and second side) preferably relate to an edge of the irradiation pattern formed by the parallel irradiation vectors, from which the structure then emerges by way of selective beam control during manufacture.
• the perpendicular radiation vectors are cut off when the distance between adjacent vectors falls below a predetermined value.
• the perpendicular irradiation vectors are inserted when a distance between adjacent ones of these vectors exceeds a predetermined value.
• the length or course of the vertical irradiation vectors can be adjusted as part of a process or production preparation, for example via CAM, in order to adjust the porosity or the permeability properties of the structure and/or possibly local ones Avoid overheating ("hot spots") in the thin structure.
• parallel irradiation vectors are initially selected for the structure, and then perpendicular irradiation vectors connecting structures produced by them are selected, which extend perpendicularly from a (two-sided) outer vector of the parallel Radiation vectors extend away from the second side and towards the first side of the parallel radiation vectors.
• the parallel irradiation vectors for the following layer in the plane of the layer are selected or arranged offset from the parallel irradiation vectors of the powder layer. This offset advantageously allows an additional deviation from a strict layered order or arrangement of the irradiation vectors to be achieved, which creates a certain "randomness" of the porosity properties and can thus improve flow properties or functional properties of the structure.
• the perpendicular irradiation vectors are interrupted and only connect structures produced by two adjacent, parallel irradiation vectors.
• pores or interstices in the structure can advantageously also be made up, and the microscopic and macroscopic permeability properties of the structure can also be set and/or improved.
• the perpendicular irradiation vectors define a pulsed irradiation mode.
• an irradiation operation can be implemented by pulsing or pulse modulating an energy beam, for example a laser or electron beam, by way of the CAM, or manually.
• a pulse spacing corresponds to a spatial spacing of the parallel irradiation vectors.
• a further aspect of the present invention relates to a computer program product, comprising instructions which, when the program is executed by a computer or "build processor", for example for controlling the irradiation in an additive manufacturing system, cause this to apply the irradiation vectors according to the method described Select.
• a CAD file or a computer program product can, for example, be in the form of a storage medium (volatile or non-volatile) or playback medium, such as a memory card, USB stick, CD-ROM or DVD, or in the form of a downloadable file from a Server and / or provided in a network, or exist.
• the provision can continue z. B. in a wireless communication network by transferring a corresponding file with the computer program (product).
• a computer program product may in turn contain program code, machine code or numerical control instructions such as G-code and/or other executable program instructions in general.
• the computer program product relates to manufacturing instructions according to which an additive manufacturing system is controlled, for example via CAM means by a corresponding computer program, for the manufacture of the component.
• the computer program product can also contain geometry data and/or design data in a data set or data format, such as a 3D format or as CAD data, or can include a program or program code for providing this data.
• a further aspect of the present invention relates to a porous functional structure comprising a network, braiding or a predetermined arrangement with a plurality of, for example inner and/or outer, filigree structures or walls which are produced according to the present method. As soon as a certain resolution limit is fallen below in the production of such filigree structures, the structure in question can no longer be produced using conventional approaches. This should already apply to pore sizes below a few millimeters.
• wall areas of the functional structure are designed, for example, as curved gyroid surfaces or minimal surfaces over which, for example, two different fluids can be guided—while maintaining the predetermined porosity properties.
• the fusion structure is set up as part of a heat exchanger or heat exchanger for heat transfer or as a fluid-permeable membrane.
• the functional structure is a filter membrane or includes such a membrane.
• the functional structure includes a membrane, for example a mixed conducting (electron and ion conducting) membrane, the functional structure or the filigree structure being provided with an electrolytic or catalytic ceramic coating, such as a coating of strontium titanate, titanium oxide, cerium oxide or lithium iron phosphate.
• a membrane for example a mixed conducting (electron and ion conducting) membrane
• the functional structure or the filigree structure being provided with an electrolytic or catalytic ceramic coating, such as a coating of strontium titanate, titanium oxide, cerium oxide or lithium iron phosphate.
• FIG. 1 shows a schematic representation of the principle of a powder bed-based additive manufacturing method.
• FIG. 2 uses four partial representations, a), b), c) and d), to indicate different parts or steps of an irradiation strategy for the additive production of a filigree component structure.
• FIG. 3 indicates details of the proposed irradiation strategy.
• FIG. 4 indicates further details of the proposed irradiation strategy.
• FIG. 5 indicates further details of the proposed irradiation strategy.
• FIG. 6 shows a component with a filigree functional structure that was produced using the proposed approaches.
• FIG. 1 indicates steps of the powder-bed-based production of a structure 10 on the basis of a production plant 100 shown in simplified form.
• the structure 10 is preferably a thin-walled or filigree structure, beispielswei se as part of a component or a functional part of that.
• the structure or the component can relate to a filter membrane or, for example, parts of a heat exchanger.
• the manufacturing system 100 can be designed as an LPBF system (“laser powder bed fusion”) and for the additive construction of parts or components from a powder bed, in particular for selective laser melting.
• the system 100 can also be a system for selective laser sin tern or electron beam melting.
• the system has a construction platform 1 .
• a component structure 10 to be produced additively is produced in layers from a powder bed 5 on the construction platform 1 .
• the latter is then formed accordingly by a powder in a construction space.
• the powder is preferably distributed in layers on the building platform 1 or a production surface located above using a doctor blade 6 .
• each layer L of powder with a predetermined layer thickness After the application of each layer L of powder with a predetermined layer thickness, according to the given geometry of the component 10, regions of the layers n are selectively melted with an energy beam 3, for example a laser or electron beam, by an irradiation device 2 and then solidified. After each layer, the construction platform 1 is then preferably lowered by an amount corresponding to the layer thickness (usually only between 20 gm and 40 gm).
• the system can also be a device or a corresponding "3D printer” for so-called melt layers (FDM or FFF for "Fused Filament Fabrication”) or, for example, laser deposition welding.
• the structure 10 is preferably also formed layer by layer by selective material application, with a starting material being fed through a nozzle (cf. also reference numeral 2) extruded and thus a material application can be achieved.
• the geometry of the component 10 is usually defined by a CAD file (“computer-aided design”). After such a file has been read into the production system 100, the process then first requires the definition of a suitable irradiation strategy for example by means of CAM (“Computer-Aided-Manufacturing”), as a result of which the component geometry is also divided into the individual layers n. This can be carried out or implemented by a corresponding (build) processor 4 via a computer program.
• CAD file computer-aided design
• CAM Computer-Aided-Manufacturing
• the structure 10 or the component 20 is preferably a component of the hot gas path of a turbomachine that can be cooled and through which flow occurs during operation, such as a turbine blade, a heat shield component of a combustion chamber and/or a resonator or damper component.
• the structure 10 can be a functional component for the permeation of a gas, for example another thermally highly resilient component, a heat transfer structure or a membrane structure, such as a mixing conducting membrane or a filter membrane.
• said build processor 4 or a corresponding controller is provided, which can be programmed with corresponding CAM information or manufacturing instructions, for example, and /or cause the irradiation device 2 accordingly sen to build up the structure 10 layer by layer according to the fabrication instructions described below.
• the build processor circuit 4 preferably acts as an interface between the software that prepares the actual construction process and the corresponding hardware of the production system 100.
• the build processor can be set up, for example, to run a computer program with corresponding production instructions.
• the present invention or the irradiation pattern selected in accordance with the present invention can already be implemented by selecting appropriate irradiation vectors (process preparatory) by a computer program or computer program product CP, with the computer program expediently containing appropriate commands that are used when executing the program by a computer, for example for controlling the irradiation in an additive manufacturing system 100, cause it to select the irradiation vectors according to the method described.
• FIG. 2 indicates different steps in the choice of irradiation vectors of a powder layer for the production of the filigree structure or the corresponding physical production measures themselves.
• an irradiation strategy for producing a layer of the structure 10 is expediently multi-stage.
• a partial irradiation pattern is shown, which consists of a plurality of parallel irradiation vectors v.
• This pattern or corresponding manufacturing instructions can - like other patterns presented here - also already be implemented or defined in part or in whole by CAM means in the form of a computer program product.
• melt path V or solidified structure 10 is indicated by the dashed boundary (only partially shown) of a first or first-side irradiation vector vl (cf. on the left in the illustration).
• the course of the irradiation vectors v or the course of the structure 10 to be formed by them preferably corresponds to any arbitrary or irregular shape. Accordingly, the course of the irradiation vectors v can be a type of freehand shape or any contour or shape that can be defined in any way.
• Six parallel irradiation vectors v are shown layer by layer in the present representations for the structure 10 purely by way of example, which form a corresponding production instruction for the physical production of the structure. Deviating from this and without restricting the generality, three, four, five, eight or ten parallel radiation vectors v can alternatively be selected.
• the proposed method according to the invention is a method for powder bed-based additive manufacturing of a filigree structure 10, which has a predetermined porosity, wherein a plurality of parallel irradiation vectors v for selective irradiation of a powder layer n for the production of the structure 10 are chosen, being generated by this Melting paths V are free of overlap and the parallel irradiation vectors v continue to run parallel to the structure 10 to be formed by them.
• a further step for the irradiation of each layer for the structure 10 is indicated in the partial representation b) of FIG.
• (further) perpendicular irradiation vectors w are selected for the structure in layers, which cross the parallel irradiation vectors v and structurally connect a structure 10 produced by these vectors.
• the reference character W is intended to indicate a melt path produced by the irradiation.
• the solidified material for a layer n receives sufficient structural cohesion or corresponding dimensional stability, particularly through the additionally selected or gridded perpendicular irradiation vectors w.
• the perpendicular irradiation vectors w represent normal vectors which extend perpendicularly from the outer vector vl of the parallel irradiation vectors v away from this first side and towards a second, opposite side of the parallel irradiation vectors.
• Partial illustrations c) and d) show the situation of a pattern or a requirement for the irradiation of a layer n+1 following said powder layer n (cf. also FIG. 1) for the structure 10, with initially parallel irradiation vectors v are selected (cf. sub-figure c)) and then perpendicular irradiation vectors w (cf. sub-figure d)) generated by these structures 10 connecting, which extend perpendicularly from a second-side outer vector v2 of the parallel irradiation vectors v from this second side and extend towards the first side of the parallel irradiance vectors v.
• the arrow f shown at the bottom left in part c) is intended to indicate that the parallel irradiation vectors v for the following layer n+1 in the layer plane can be selected offset to the parallel irradiation vectors v of the powder layer n in order to create further inventive
• advantages such as the creation of a desired, tailor-made, but preferably not completely homogeneous or isotropic porosity.
• FIG. 3 shows in more detail how the distance between the vectors w, which extend vertically from left to right, for example, behaves as a function of the course of the wave-like vectors v.
• the distance can increase to an unwanted extent or it can exceed an upper limit. Displaced from this, further down in the irradiation pattern, there can nevertheless be a narrowing or convergence of vertically running vectors w, with the distance falling below a minimum, which can lead in particular to local overheating and structural defects.
• superimpositions or greater distances between the melting paths of the vectors w can occur.
• FIG falls below or exceeds the value.
• the problem mentioned above is solved in the present invention by adapting the critical vectors or by inserting vectors.
• FIG. 5 A further embodiment of solutions according to the invention is shown in FIG. 5, where partial illustration a) again corresponds to the first partial illustration in FIG. 2 (analogously).
• partial illustration b) shows that vertical irradiation vectors w′′ are selected here, which are interrupted and in each case only connect structures 10 produced by two adjacent parallel irradiation vectors v.
• tailor-made properties of the filigree structure can also be created in layers and/or the structure 10 can be manufactured in any form.
• such an irradiation can be defined particularly advantageously by a pulsed irradiation operation for the vectors w, with a pulse interval e2 (cf. FIG. 2) corresponding to a spatial interval between the parallel irradiation vectors v.
• the parallel irradiation vectors v shown can then be spaced apart from one another over a length of 100 ⁇ m to 1 mm, for example 500 ⁇ m.
• FIG. 6 shows a special configuration of the component 20 or a functional structure comprised by this component 20 .
• the component or the functional structure 20 comprises a network or mesh with a plurality of filigree structures 10, which are preferably produced according to the method described.
• the functional structure 20 can be set up, for example, as part of a heat exchanger for heat transfer.
• the functional structure or the component can be a filter membrane.
• FIG. 6 shows that the functional structure 20 is designed with thin walls as a gyroid surface or gyroid body, via which z. B. two different fluids Fl and F2 can be performed.
• the fluids mentioned can be, for example, cooling fluids or other gases or liquids, for example for heat transfer or for improving or supporting physical, chemical, electrochemical, catalytic or electrolytic functions.
• the gyroid surface formed by the structure shown relates to a triple-periodic minimal surface with the two permeation domains carrying the corresponding fluid.
• the functional structure 20 can relate to a mixed conducting membrane, the functional area being provided with an electrolytic or catalytic ceramic coating, such as a coating of strontium titanate, titanium oxide, cerium oxide or lithium iron phosphate.
• an electrolytic or catalytic ceramic coating such as a coating of strontium titanate, titanium oxide, cerium oxide or lithium iron phosphate.
• Such components can be necessary and/or advantageous in particular in chemical “cracking” processes, such as olefin production, where appropriate with corresponding decoupling or sequestration of hydrogen.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Manufacturing & Machinery (AREA)
• Materials Engineering (AREA)
• Physics & Mathematics (AREA)
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• Automation & Control Theory (AREA)
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• Dispersion Chemistry (AREA)
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• Powder Metallurgy (AREA)

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• 2021
  • 2021-06-14 DE DE102021206000.5A patent/DE102021206000A1/de not_active Withdrawn
• 2022
  • 2022-06-10 US US18/568,176 patent/US20240278326A1/en active Pending
  • 2022-06-10 CN CN202280041926.8A patent/CN117529378A/zh active Pending
  • 2022-06-10 EP EP22734900.8A patent/EP4326463A2/de active Pending
  • 2022-06-10 WO PCT/EP2022/065809 patent/WO2022263310A2/de active Application Filing

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