WO2019057624A1 - Procédé de fabrication d'un corps moulé à alvéoles ouvertes en métal, et corps moulé fabriqué selon ce procédé - Google Patents

Procédé de fabrication d'un corps moulé à alvéoles ouvertes en métal, et corps moulé fabriqué selon ce procédé Download PDF

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Publication number
WO2019057624A1
WO2019057624A1 PCT/EP2018/074882 EP2018074882W WO2019057624A1 WO 2019057624 A1 WO2019057624 A1 WO 2019057624A1 EP 2018074882 W EP2018074882 W EP 2018074882W WO 2019057624 A1 WO2019057624 A1 WO 2019057624A1
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WIPO (PCT)
Prior art keywords
particles
metal
semifinished product
open
shaped body
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.)
Ceased
Application number
PCT/EP2018/074882
Other languages
German (de)
English (en)
Inventor
Tilo BÜTTNER
Gunnar Walther
Hans-Dietrich BÖHM
Thomas WEISSGÄRBER
Bernd Kieback
Christian Immanuel Müller
Robin Kolvenbach
Lars Torkuhl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alantum Europe GmbH
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Original Assignee
Alantum Europe GmbH
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alantum Europe GmbH, Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV filed Critical Alantum Europe GmbH
Priority to CA3076512A priority Critical patent/CA3076512A1/fr
Priority to JP2020516562A priority patent/JP2020534433A/ja
Priority to US16/648,028 priority patent/US20200263306A1/en
Priority to KR1020207011232A priority patent/KR20200127966A/ko
Priority to CN201880060988.7A priority patent/CN111432961A/zh
Priority to RU2020111275A priority patent/RU2020111275A/ru
Priority to EP18770004.2A priority patent/EP3684532A1/fr
Publication of WO2019057624A1 publication Critical patent/WO2019057624A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • 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
    • 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
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/002—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of porous nature
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/08—Alloys with open or closed pores
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
    • C23C18/08—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of metallic material
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
    • C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
    • C23C18/1204—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material inorganic material, e.g. non-oxide and non-metallic such as sulfides, nitrides based compounds
    • C23C18/1208—Oxides, e.g. ceramics
    • C23C18/1216—Metal oxides
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
    • C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
    • C23C18/1229—Composition of the substrate
    • C23C18/1241—Metallic substrates
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
    • C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
    • C23C18/125—Process of deposition of the inorganic material
    • C23C18/1262—Process of deposition of the inorganic material involving particles, e.g. carbon nanotubes [CNT], flakes
    • C23C18/127—Preformed 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
    • C23C20/00—Chemical coating by decomposition of either solid compounds or suspensions of the coating forming compounds, without leaving reaction products of surface material in the coating
    • C23C20/02—Coating with metallic material
    • C23C20/04—Coating with metallic material with metals
    • 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
    • C23C20/00—Chemical coating by decomposition of either solid compounds or suspensions of the coating forming compounds, without leaving reaction products of surface material in the coating
    • C23C20/06—Coating with inorganic material, other than metallic material
    • 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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • 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
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/05—Light metals
    • B22F2301/052—Aluminium
    • 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
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/10—Copper
    • 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
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/15—Nickel or cobalt
    • 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
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/20—Refractory metals
    • B22F2301/205—Titanium, zirconium or hafnium
    • 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
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/25—Noble metals, i.e. Ag Au, Ir, Os, Pd, Pt, Rh, Ru
    • B22F2301/255—Silver or gold
    • 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
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/35—Iron
    • 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
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/082—Coating starting from inorganic powder by application of heat or pressure and heat without intermediate formation of a liquid in the layer
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D1/00—Electroforming
    • C25D1/10—Moulds; Masks; Masterforms
    • 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
    • C25D5/54—Electroplating of non-metallic surfaces
    • C25D5/56—Electroplating of non-metallic surfaces of plastics

Definitions

  • the invention relates to a method for producing an open-pore shaped body which is formed with a metal and a molded body produced by the method.
  • Claim 10 relates to a molded article produced by the method.
  • Advantageous embodiments and further developments can be realized with features described in the subordinate claims.
  • open-porous body made of a metallic material are used as semifinished product.
  • This may be a metal grid, a metal net, a metal mesh, a metal foam, a metal garbage or a semi-finished product formed with metallic fibers.
  • the semi-finished product may also be an open-pore shaped body in which a polymer material has been galvanically (electrochemically) coated with a metal.
  • a semifinished product produced in this way can be subjected to a thermal treatment in which the organic and volatile constituents of this polymer are removed as a result of pyrolysis.
  • this removal of the organic constituents of a polymer can also take place later with a simultaneous removal of other organic or volatile components, which will be discussed in more detail below.
  • a coating of the open-pore body with metallic particles of the same metal material from which the open-porous semi-finished product is made should also be introduced into the interior of the shaped body, that is to say into the pores or free spaces of the semifinished product.
  • particles of a chemical compound of the chemical element with which the open-porous shaped body is formed as semifinished product are coated.
  • the particles mentioned consist of a chemical compound which can be converted by chemical reduction, thermal or chemical decomposition in a thermal treatment in the respective chemical element with which the semifinished product is formed.
  • the metallic particles of the same metal material with which the open porous semi-finished product has been produced or the particles of a chemical compound of the chemical element which can be converted into the chemical element with which the open-porous shaped body is formed as a semi-finished product can be used for the process the coating can be used as a powder, as a powder mixture, as a suspension or as a dispersion.
  • the coating of the surface of the semifinished product with a powder, a powder mixture and / or a suspension / dispersion can be effected by dipping, spraying, pressure-assisted, electrostatic and / or magnetic.
  • the powders, powder mixtures, suspensions or dispersions used for the coating of the open-porous semifinished product may contain, in addition to metallic particles or particles of a chemical compound of a metal, an inorganic and / or organic binder which is the powder, the powder mixture, the suspension or dispersion is finely divided in the form of a solid powder, or dissolved in a liquid phase of a solution, a suspension / dispersion of metallic particles or particles of a chemical compound of a metal.
  • the coating of the surface of the semifinished product with a binder in the form of a solution or a suspension / dispersion can be carried out by dipping or Spraying done.
  • the binder-impregnated open-porous semi-finished product is subsequently coated with a powder or a powder mixture of metallic particles.
  • the application of particles as powder, powder mixture and / or suspension / dispersion can be repeated several times, preferably at least three times, more preferably five times. This also applies to the particular vibration to be performed and possibly the application of a binder.
  • the coating of the surface of the semifinished product can furthermore be carried out before the thermal treatment in which the organic constituents of the polymeric material with which the semifinished product has been produced are removed. Subsequent to the application of the particle-containing material, a thermal treatment is carried out in which organic and volatile constituents of the polymeric material, and at the same time any binder used, are removed.
  • sintering is carried out in which sintered bridges between the metal particles or after thermal or chemical decomposition, e.g. a chemical reduction, obtained metallic particles and the metallic surface of the open-porous metallic shaped body are formed.
  • the specific surface of the thus coated and sintered open-pore shaped body is to be increased to at least 30 m 2 / l, however, at least 5 times compared to the starting material of the uncoated metallic molded body as a semi-finished product.
  • the coating with particles can be carried out on different sides of the surface, in particular on surfaces of the semifinished product arranged opposite one another, with different amounts in order in each case to obtain a different porosity, pore size and / or specific surface area. This can be achieved, for example, by a different number of application of particles as powder, powder mixture or in suspension / dispersion, with or without binder use, on the surfaces arranged on different sides. Thus, a graded formation of a shaped article produced according to the invention can also be achieved.
  • the pore size within the applied particle layer of the coated and sintered open-pore shaped body should correspond to a maximum of 10,000 times the particle size used. This can be additionally influenced by the maximum height of the sintering temperature and its holding time, since with increasing temperature and holding time the diffusion-dependent mass transport and thus the sintering, which is accompanied by a reduction of the pore volume, is promoted.
  • the material with which the shaped body produced according to the invention is formed should contain not more than 3% by weight, preferably not more than 1% by weight of O 2 .
  • a suitable atmosphere should be chosen for the thermal treatment used.
  • This can be an inert atmosphere, for example an argon atmosphere, during thermal decomposition.
  • an atmosphere that is formed with hydrogen in a reduction, for example, one can use an atmosphere that is formed with hydrogen.
  • the oxygen, fluorine, chlorine, any mixtures of these gases as also contain any mixtures with inert gases, for example nitrogen, argon or krypton.
  • metal cations for the formation of elemental metals can be reduced.
  • the anion component can, however, be oxidized.
  • a chemical decomposition of a compound of noble metals in the elemental metals Au, Pt, Pd
  • Au, Pt, Pd gold
  • disproportionations modeled on the equation: 2 gel ⁇ -> Ge (s) + gel (g) are possible for aluminum, titanium, zirconium and chromium. It is also possible to use crystalline, organometallic complexes or salts thereof in which the metal center is already present in oxidation state 0.
  • Such an open-porous shaped body produced according to the invention can be used in the field of (i) filtration, as (ii) catalyst (for example in US Pat
  • Ethylene oxide synthesis - Ag-particle coated Ag foam catalyst as (iii) electrode material, or as (iv) carrier of a catalytic active substance.
  • Suitable metals for moldings produced according to the invention are: Ni, Fe, Cr, Al, Nb, Ta, Ti, Mo, Co, B, Zr, Mn, Si, La, W, Cu, Ag, Au, Pd, Pt, Zn, Sn, Bi, Ce or Mg. Consequently, in the method according to the invention for the coating of a semifinished product, particles of these elements, corresponding to the respective chemical element with which the semifinished product is formed, can be used.
  • chemical compounds of the metals Ni, Fe, Cr, Al, Nb, Ta, Ti, Mo, Co, B, Zr, Mn, Si, La, W, Cu, Ag, Au, Pd, Pt, Zn, Sn, Bi , Ce, Mg, V, which can be converted into particles of the respective metal by thermal or chemical decomposition in a thermal treatment, in particular their oxides, nitrides, hydrides, carbides, sulfides, sulfates, phosphates, fluorides, chlorides, bromides, iodides, azides, nitrates, amines, amides, organometallic complexes, salts of organometallic complexes or decomposable salts for the particle-formed material with which the surface of the present as a semi-finished open-porous molded body to be coated in the second alternative according to the invention are used.
  • Particularly suitable as chemical compounds are chemical compounds of: Ni, Fe, Ti, Mo, Co, Mn, W,
  • an atmosphere suitable for the decomposition which is inert, oxidizing or reducing, is present can, respected.
  • the thermal treatment which is to lead to the chemical reduction, may preferably be carried out at least temporarily until the chemical reduction has been carried out in a reducing atmosphere, in particular a hydrogen atmosphere.
  • Porosity, pore size and specific surface area can be significantly affected by the morphology of the particles used for the coating.
  • particles of small size and dendritic form e.g. Electrolyte powder, advantageous. Due to their irregular geometry, which allows no gap-free arrangement, adjacent particles form free spaces between contact points and particle bodies, which are partially connected to channels.
  • the use of particles of a chemical compound in thermal decomposition or chemical decomposition produces an additional microporous space left by the volatile component. The proportion of the microporous space in the total pore space is higher, the greater the proportion of the volatile component of the chemical compound.
  • the use of a high oxidation state oxide, and hence a high oxygen content is advantageous. Since the sintering activity of structures increases with an increase in the specific surface area, the substance-dependent sintering temperature is selected to be so high that the particles sinter themselves mechanically to one another and to the semifinished product, but the fine pores are not substantially compacted.
  • the semifinished product was an open-porous shaped body of silver, average pore size 450 ⁇ m, with a porosity of about 95%, the dimensions 70 mm ⁇ 63 mm, thickness 1.6 mm (produced by electrolytic deposition of Ag on polyurethane foam) is subjected to a thermal treatment subjected to a temperature of at least 400 ° C to the organic components, in particular to remove the polyurethane, carried out.
  • a metallic powder is used: - Ag metal powder with a particle size d 5 o in the range of 3 ⁇ m to 9 ⁇ m, with a total mass of 2 g.
  • ком ⁇ онент 1 For coating the surface of the metallic open-pore shaped body as semifinished product, 0.6 g of steramide wax having a particle size ⁇ 80 ⁇ m and a 1% strength aqueous solution of polyvinylpyrrolidone having a volume of 6 ml are used as binder.
  • the surface of the semi-finished product is sprayed with the binder solution in the interior of pores before the silver powder is applied to the surface coated with the binder.
  • Silver powder and the steramide wax were mixed for 10 minutes with a Turbula mixer.
  • the open-porous coated molded body was fixed in a vibration device and sprinkled with silver powder on both sides.
  • the vibration distributes the powder evenly throughout the open-porous network. The particles remain only at the
  • Debinding begins at about 300 ° C and is completed at 600 ° C and a holding time of about 30 min.
  • the sintering process takes place in the temperature range from 550 ° C to 850 ° C with a holding time of 1 min to 60 min.
  • the Ag from the powder particles diffuses into the web material until the powder particles are firmly connected to the webs of the surface of the semifinished product via sintering necks or sinter bridges which form.
  • the open-porous shaped body consisted of 100% silver. The porosity was about 94%.
  • the surface of the webs is characterized by a high roughness.
  • the reason for this is that the applied powder particles are connected only via sintered necks or sintered bridges with the metallic carrier foam of the semifinished product, so that the original particle morphology is maintained.
  • the specific inner surface (measured by the BET method) of the finished open-pore molded article could be increased by the process from previously (uncoated state) from 10.8 m 2 / l to afterwards (coated state) 99.3 m 2 / l ,
  • the powdery binder was first dissolved in water and then added all other components and mixed in a speed mixer 2 x 30 s at 2000 rev / min to a suspension.
  • the semi-finished product was sprayed on both sides several times using a wet powder spray method with the prepared powder suspension.
  • the suspension sputtered on in a spraying device and applied on both surfaces on surfaces of the semifinished product. Due to the discharge pressure from the spray nozzle, the suspension is distributed evenly in the porous network of the semifinished product. In this case, the suspension only adheres to the web surface, so that the webs are completely covered with the suspension and the open porosity of the semifinished product is largely retained.
  • the thus-coated semi-finished product was then dried at room temperature in air.
  • a thermal treatment was carried out under a hydrogen atmosphere and then in an oven.
  • the oven is heated at a heating rate of 5K / min.
  • the reduction of the silver oxide begins even at below 100 ° C and is completed at 200 ° C and a holding time of about 30 minutes under hydrogen.
  • the remaining debinding and sintering process may then be carried out in an atmosphere containing oxygen, e.g. Air in the temperature range of 200 ° C to 800 ° C at a holding time of 1 min to 180 min to be performed.
  • the silver oxide was first reduced to metallic silver, which is nanocrystalline.
  • metallic silver which is nanocrystalline.
  • the porosity is about 93%.
  • the surface of the webs is characterized by a high roughness.
  • the reason for this is that the applied powder particles are only connected to the surfaces of the semifinished product via sintered necks / sintered bridges, so that the original particle morphology is retained.
  • the specific inner surface area (measured by the BET method) of the finished open-porous molded article could be determined by the previously performed process
  • the semifinished product was an open-pore shaped body made of copper, with an average pore size of 800 ⁇ m, with a porosity of about 95%, the dimensions 200 mm ⁇ SO mm, thickness 1.6 mm (produced by electrolytic deposition of Cu on PU foam used.
  • the binder used was a 1% strength aqueous solution of polyvinylpyrrolidone with a volume of 20 ml.
  • the semi-finished product formed from copper was sprayed on both sides with the binder solution. Subsequently, the binder-coated semi-finished product was fixed in a vibration device and sprinkled on both sides with the copper powder. The vibration distributes the powder in the porous network of the semifinished product. The binder and powder coating was repeated three times so that the pore space was completely filled.
  • Debinding and sintering was carried out under a thermal treatment under a hydrogen atmosphere.
  • the oven is heated at a heating rate of 5K / min.
  • the binder removal starts at about 300 ° C and is completed at 600 ° C and a holding time of about 30 min. Thereafter, it is heated to a sintering temperature of 950 ° C and this temperature was maintained for 30 min.
  • the copper powder particles sinter to one another and to the web material until the powder particles are firmly bonded to the surface of the semifinished product via sintering necks or sinter bridges, whereby a high porosity is maintained and an increase in the specific surface area is achieved.
  • the porosity of the thus treated open-porous molded article is 54% and the specific surface 67 m 2 / l.
  • the semifinished product was an open-pore shaped body of cobalt, with an average pore size of 580 ⁇ m, with a porosity of about 95%, with the dimensions 70 mm ⁇ 65 mm, thickness 1.9 mm (produced by electrolytic deposition of Co on PU).
  • Foam, as a powder was co-metal powder with a mean particle size ⁇ 45 ⁇ and a mass of 10 g and
  • Steramidwachs with a particle size ⁇ 80 ⁇ a mass of 0.1 g and used as a binder, a 1% aqueous solution of polyvinylpyrrolidone with a volume of 6 ml.
  • Cobalt powder and steramide wax were mixed for 10 minutes with a Turbula mixer.
  • the semi-finished cobalt was sprayed on one side with the binder solution. Then it was fixed in a vibration device and sprinkled on both sides with the cobalt powder. The vibration distributes the powder evenly in the porous network of the semifinished product. The particles only adhere to the web surface, so that the webs are completely covered with powder particles and initially the open porosity of the foam is maintained.
  • the surface of the semifinished product is sprayed on a first side so strongly with binder solution that the previously open pores are closed by the binder on one side, being completely filled by the subsequent further powder application of the near-surface pore space.
  • the opposite side of the semifinished product only the webs are superficially coated. As a result, the powder charge and thus the porosity in the foam is graded from the first side to the opposite side of the semifinished product.
  • a thermal treatment was carried out in a hydrogen atmosphere.
  • the oven was heated at a heating rate of 5K / min.
  • the binder removal starts at about 300 ° C and is completed at 600 ° C and a holding time of about 30 min. Thereafter, it is heated to a sintering temperature of 1300 ° C and held this temperature for 30 min.
  • the Co diffuses from the powder particles into the web material of the semifinished product until the powder particles are firmly bonded to one another via the sintering necks or sinter bridges forming themselves (in the completely filled regions).
  • Composition of the ready-made open-pore shaped body of Co was 100%.
  • the porosity is graded over the entire thickness of the molded body, starting from the first side to the opposite side arranged on this side and is about 54% on one side and about 93% on the other side foam.
  • the specific surface area of the finished open-pored shaped article is 69 m 2 / L
  • the semifinished product was an open-cell nickel expanded metal grid, with a cell size of about 0.7 mm ⁇ 2 mm, with the dimensions 75 mm ⁇ 75 mm, thickness about 1 mm (produced by ironing an original 0.25 mm thick slotted Ni sheet ), as powder Ni metal powder with a mean particle size ⁇ 10 ⁇ , with a mass of 8 g, a steramide wax with a middle
  • Powder and steramide wax were mixed for 10 minutes with a Turbula mixer.
  • the nickel expanded metal grid was sprayed from two opposite sides with the binder solution. Subsequently, the grid was fixed in a vibration device and sprinkled on both sides with the nickel powder. The vibration distributes the nickel powder evenly on the lattice network. The particles only adhere to the lattice web surface, so that the lattice webs are completely covered with powder particles and the open porosity of the expanded metal lattice is maintained. The process was repeated five times repeated.
  • Debinding and sintering were carried out under a hydrogen atmosphere in a thermal treatment.
  • the oven was heated at a heating rate of 5K / min.
  • the binder removal starts at about 300 ° C and is completed at 600 ° C and a holding time of about 30 min. Thereafter, it was heated to a sintering temperature of 1280 ° C and held this temperature for 30 min.
  • the Ni diffuses from the powder particles into the grid web material until the powder particles are firmly connected to the grid webs via sintering necks or sinter bridges which form.
  • the resulting open-porous molded body was 100% nickel.
  • the surface of the webs is characterized by a high roughness, since the applied powder particles are connected only via sintered necks or sintered bridges with the carrier grid of the semifinished product and with each other, so that the original particle morphology is largely retained.
  • the applied highly porous nickel layer on the webs is between 1 ⁇ and 300 ⁇ thick. The porosity within the applied layer is 40%.

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Abstract

L'invention concerne un procédé de fabrication de corps moulés à alvéoles ouvertes en métal, selon lequel un corps moulé à alvéoles ouvertes en métal est, en tant que produit semi-fini, revêtu sur sa surface de particules du même métal dont est constitué le produit semi-fini, ou bien de particules d'un composé chimique du métal dont est constitué le produit semi-fini, le composé chimique pouvant, lors d'un traitement thermique, être réduit, thermiquement ou chimiquement décomposé, les corps moulés étant constitués des particules obtenues par réduction chimique ou décomposition thermique ou chimique du métal concerné. Après le revêtement, au moins un traitement thermique est effectué, selon lequel les particules sont liées à la surface du produit semi-fini et/ou de particules adjacentes de manière telle que la surface spécifique du corps moulé à alvéoles ouvertes soit augmentée passant à au moins 30 m²/l et/ou d'au moins de 5 fois par rapport au matériau initial. Lors du traitement thermique d'un corps moulé à alvéoles ouvertes, une atmosphère appropriée est strictement observée.
PCT/EP2018/074882 2017-09-06 2018-09-14 Procédé de fabrication d'un corps moulé à alvéoles ouvertes en métal, et corps moulé fabriqué selon ce procédé Ceased WO2019057624A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CA3076512A CA3076512A1 (fr) 2017-09-19 2018-09-14 Procede de fabrication d'un corps moule a alveoles ouvertes en metal, et corps moule fabrique selon ce procede
JP2020516562A JP2020534433A (ja) 2017-09-19 2018-09-14 金属製の開孔成型体の製造方法、および該方法により製造された成型体
US16/648,028 US20200263306A1 (en) 2017-09-06 2018-09-14 Method for producing an open-pore molded body which is made of a metal, and a molded body produced using said method
KR1020207011232A KR20200127966A (ko) 2017-09-19 2018-09-14 금속으로 이루어지는 개방 기공 성형체의 제조 방법 및 상기 방법을 사용하여 제조된 성형체
CN201880060988.7A CN111432961A (zh) 2017-09-19 2018-09-14 用于制造由金属制成的开孔成型体的方法和使用该方法制造的成型体
RU2020111275A RU2020111275A (ru) 2017-09-19 2018-09-14 Способ получения изготовленного из металла формованного тела с открытыми порами и формованное тело, полученное указанным способом
EP18770004.2A EP3684532A1 (fr) 2017-09-19 2018-09-14 Procédé de fabrication d'un corps moulé à alvéoles ouvertes en métal, et corps moulé fabriqué selon ce procédé

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DE102017216569.3 2017-09-19
DE102017216569.3A DE102017216569A1 (de) 2017-09-19 2017-09-19 Verfahren zur Herstellung eines offenporösen Formkörpers, der mit einem Metall gebildet ist und einen mit dem Verfahren hergestellten Formkörper

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KR (1) KR20200127966A (fr)
CN (1) CN111432961A (fr)
CA (1) CA3076512A1 (fr)
DE (1) DE102017216569A1 (fr)
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CN112170862A (zh) * 2020-09-30 2021-01-05 桂林金格电工电子材料科技有限公司 一种银钨触头材料的制备方法
DE102021204741A1 (de) * 2021-05-11 2022-11-17 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein Verfahren zur Herstellung eines porösen metallischen oder keramischen Bauteils sowie ein mit dem Verfahren hergestelltes Bauteil
CN113427002B (zh) * 2021-06-25 2022-06-21 哈尔滨工业大学 一种三维多孔结构的无压烧结制备方法
DE102023209672B3 (de) 2023-10-02 2024-10-02 Alantum Europe Gmbh Elektrode für elektrochemische Zellen
CN119035543B (zh) * 2024-09-03 2025-08-01 中南大学 一种银包铜粉的制备方法

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WO2005037467A2 (fr) * 2003-09-30 2005-04-28 Inco Limited Procede de fabrication de composants en alliage a base de nickel et composants ainsi fabriques
WO2006089761A1 (fr) * 2005-02-28 2006-08-31 Cvrd Inco Limited Procede de fabrication d'un corps en mousse metallique a pores ouverts, corps en mousse metallique fabrique de cette maniere et applications correspondantes
EP2764916A1 (fr) * 2013-02-06 2014-08-13 Alantum Europe GmbH Corps en mousse métallique à surface modifiée, son procédé de production et son utilisation

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JP2020534433A (ja) 2020-11-26
US20200263306A1 (en) 2020-08-20
CN111432961A (zh) 2020-07-17
EP3684532A1 (fr) 2020-07-29
KR20200127966A (ko) 2020-11-11
RU2020111275A (ru) 2021-10-20
DE102017216569A1 (de) 2019-03-21

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