EP1432851A1 - Procede d'enduction de materiaux supports electriquement conducteurs - Google Patents

Procede d'enduction de materiaux supports electriquement conducteurs

Info

Publication number
EP1432851A1
EP1432851A1 EP02798743A EP02798743A EP1432851A1 EP 1432851 A1 EP1432851 A1 EP 1432851A1 EP 02798743 A EP02798743 A EP 02798743A EP 02798743 A EP02798743 A EP 02798743A EP 1432851 A1 EP1432851 A1 EP 1432851A1
Authority
EP
European Patent Office
Prior art keywords
layer
ceramic layer
ceramic
coating
composite
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Withdrawn
Application number
EP02798743A
Other languages
German (de)
English (en)
Inventor
Heinrich Kern
Horst Günter KRÜGER
Uwe Schindler
Andreas Knote
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.)
Technische Universitaet Ilmenau
Original Assignee
Technische Universitaet Ilmenau
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
Priority claimed from DE10240291A external-priority patent/DE10240291A1/de
Application filed by Technische Universitaet Ilmenau filed Critical Technische Universitaet Ilmenau
Publication of EP1432851A1 publication Critical patent/EP1432851A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/10—Alloys containing non-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
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
    • 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
    • C25D13/22—Servicing or operating apparatus or multistep processes
    • 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 coating electrically conductive carrier materials with a composite layer, in which electrophoretic and galvanic deposition are combined.
  • Electrophoretic processes for the application of layers e.g. B. electrophoretic dip painting, for which a number of patents have been registered.
  • the German patents DE 43 30 002 CI describe a process for painting metallic substrates or DE 41 42 997 CI describes a device for electrophoretic dip painting.
  • European Patent EP 0 381 179 describes the deposition of a ceramic protective layer on precious metals with the aim of reducing the loss of material in high-temperature applications.
  • Another European patent EP 0 204 339 includes the application of a glass / ceramic layer to a metal base body in order to improve the wear resistance of the component.
  • the material composition of the layer (or, in the case of multi-layer coating, the material composition of a layer) is formed in one process step.
  • No. 5,925,228 describes a method for sealing a porous coating on an electrically conductive substrate.
  • ceramic precursor components are deposited electrophoretically on the coating, whereupon the coating is heated in order to cause a chemical reaction to form the ceramic integrated in the coating.
  • the sealing layer produced consists of a single material - namely ceramic, so that the properties of this layer are determined by this ceramic layer. It is not possible to advantageously combine the properties of several materials or groups of materials.
  • the object of the invention is to produce a layer on carrier materials over several process steps, which layer consists of different substances with different properties and thus represents a composite, the resulting properties of which can be adapted to the respective requirements of the coating or sealing tasks.
  • an electrically conductive base body preferably made of metal, is immersed in a dispersion with ceramic particles and is electrophoretically coated by switching on an electric field.
  • the dispersion is composed of the dispersion medium, the powder and additives that enhance the electrophoretic effect and ensure the green strength of the layer necessary for handling.
  • Oxides such as Ti0 2 , Si0 2 , A1 2 0 3 , Zr0 2 , but also other non-metallic-inorganic compounds with grain sizes preferably ⁇ 1 ⁇ m are used as powders.
  • the organic constituents are baked out in a second process step and the particles are sintered at the grain boundaries to such an extent that a skeleton body with an open porosity of 30 to 60 percent by volume and a uniform pore structure in the submicron range is formed.
  • the temperature treatment is carried out in a vacuum or under protective gas.
  • the open porosity is filled with metal, polymer or non-metallic-inorganic materials. Electroplating is used as the preferred method for metals. Immersion infiltration, possibly with vacuum support, is suitable for filling with polymers, and the sol-gel technique can be used advantageously for non-metallic-inorganic materials, possibly in conjunction with electrophoresis.
  • measures to improve layer adhesion are carried out.
  • thermal treatment is recommended in which a cohesive connection of the layer to the substrate is achieved by means of diffusion processes. This ensures very good substrate adhesion of the composite layer to the substrate.
  • the layer is also characterized by a high damage tolerance to mechanical stress. If other filler materials are used, the layer adhesion can also be improved by multiple infiltration alternating with thermal processes.
  • this composite material over the prior art is that two or more different materials or groups of materials, for example metal and ceramic, are present side by side within a layer.
  • each component in itself represents a separate coherent layer, the porosity of which is filled up by the other component.
  • This penetration of two layers means that the components are changed over submicron dimensions.
  • the result is a new material that combines the properties of both components that connects, e.g. B. the high hardness and wear resistance of the ceramic with the ductility of the metals.
  • a dispersion is first prepared in step 1, which contains ethanol, water, stabilized Zr0 2 powder with a primary grain size of 40 nm and 4-hydroxybenzoic acid as essential components.
  • step 1 contains ethanol, water, stabilized Zr0 2 powder with a primary grain size of 40 nm and 4-hydroxybenzoic acid as essential components.
  • these should be processed in a dissolver or with the help of ultrasound.
  • the surface of the steel substrate must be cleaned with a degreasing agent before coating.
  • the actual coating of the components takes place in four essential process stages.
  • the steel part In the first stage of the process, the steel part is immersed in the dispersion after cleaning in step 2 and is electrophoretically coated with the ceramic particles in step 3 by switching on an electrical direct field.
  • the component is removed from the dispersion and air-dried in step 4.
  • the applied layer is thermally fixed.
  • the organic components are heated in step 5 and the surfaces of the particles are sintered until a stable ceramic matrix with an open porosity of approximately 50 percent by volume is formed. Due to the low oxidation resistance of steel, sintering takes place in a vacuum or under a protective gas.
  • the open porosity is galvanically filled with metal in step 6.
  • Filling with nickel has proven particularly good, to which other metals can be added to form special properties.
  • an annealing treatment takes place in step 7, with which the adhesive strength of the layer to the steel is improved.
  • the good solubility of nickel in iron is used here, which leads to the formation of a diffusion layer and thus to the formation of chemical bonds between the applied layer and the substrate.
  • the layers achieved in this way represent a metal-ceramic composite in which metal and ceramic alternate at submicron-sized intervals.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

L'invention vise à fabriquer en plusieurs opérations une couche de matériau composite qui regroupe les qualités des matériaux utilisés. A cet effet, les opérations à effectuer sont les suivantes : revêtement par électrophorèse, frittage, bouchage par galvanisation des pores de la couche avec du métal et recuit pour lier la couche au matériau support. Les couches de matériaux composites selon l'invention sont utilisées pour protéger de la corrosion, de l'usure ou analogue sur des matériaux supports de préférence métalliques et conducteurs.
EP02798743A 2001-09-20 2002-09-19 Procede d'enduction de materiaux supports electriquement conducteurs Withdrawn EP1432851A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10146341 2001-09-20
DE10146341 2001-09-20
DE10240291 2002-08-31
DE10240291A DE10240291A1 (de) 2001-09-20 2002-08-31 Verfahren zur Beschichtung von elektrisch leitfähigen Trägerwerkstoffen
PCT/EP2002/010535 WO2003025258A1 (fr) 2001-09-20 2002-09-19 Procede d'enduction de materiaux supports electriquement conducteurs

Publications (1)

Publication Number Publication Date
EP1432851A1 true EP1432851A1 (fr) 2004-06-30

Family

ID=26010187

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02798743A Withdrawn EP1432851A1 (fr) 2001-09-20 2002-09-19 Procede d'enduction de materiaux supports electriquement conducteurs

Country Status (2)

Country Link
EP (1) EP1432851A1 (fr)
WO (1) WO2003025258A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005071141A1 (fr) * 2004-01-22 2005-08-04 The University Of Manchester Revetement de ceramique

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4148204A (en) * 1971-05-07 1979-04-10 Siemens Aktiengesellschaft Process of mechanically shaping metal articles

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1259626A (fr) * 1968-03-21 1972-01-05
FR2638781B1 (fr) * 1988-11-09 1990-12-21 Snecma Depot electrophoretique anti-usure du type metalloceramique consolide par nickelage electrolytique
US5735332A (en) * 1992-09-17 1998-04-07 Coors Ceramics Company Method for making a ceramic metal composite
US5338433A (en) * 1993-06-17 1994-08-16 Mcdonnell Douglas Corporation Chromium alloy electrodeposition and surface fixation of calcium phosphate ceramics
US6059949A (en) * 1997-04-23 2000-05-09 Cerel (Ceramic Technologies) Ltd. Method of electrophoretic deposition of ceramic bodies for use in manufacturing dental appliances
JP2942823B1 (ja) * 1998-02-27 1999-08-30 工業技術院長 セラミックス−金属複合体およびその製造方法と装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4148204A (en) * 1971-05-07 1979-04-10 Siemens Aktiengesellschaft Process of mechanically shaping metal articles

Also Published As

Publication number Publication date
WO2003025258A1 (fr) 2003-03-27

Similar Documents

Publication Publication Date Title
EP0609795B1 (fr) Couche d'isolation thermique céramique sur éléments métalliques et procédé de manufacture
DE69531552T2 (de) Schutzzusammensetzung sowie verfahren zu deren herstellung
EP1383940B1 (fr) Couches ceramiques fonctionnelles comprenant une couche support produite au moyen de nanoparticules cristallines
DE3785427T2 (de) Verschleissfeste siliziumkarbidpulver mit mehrschichtauflage.
DE2632520A1 (de) Schichtstoff aus einem polymeren substrat
EP0219536A1 (fr) Couche de protection.
EP3351290B1 (fr) Traversée électrique comprenant un élément de contact et procédé de fabrication
DE202018103830U1 (de) Kohlenstoffschicht-Beschichtungsstruktur für ein Erzeugnis
DE102012108057B4 (de) Verfahren zur Herstellung einer Dampfturbinenschaufel der letzten Stufe
EP0798402B1 (fr) Couche protective contre l'oxydation
DE69514157T2 (de) Metallisierung eines Ferriten mittels Oberflächenreduktion
DE102013218687A1 (de) Galvanisch hergestellte Verschleißschutzbeschichtung und Verfahren hierfür
DE202015103646U1 (de) Filmbildende Struktur auf einem Erzeugnis
DE10200803A1 (de) Herstellung eines keramischen Werkstoffes für eine Wärmedämmschicht sowie eine den Werkstoff enthaltene Wärmedämmschicht
EP1432851A1 (fr) Procede d'enduction de materiaux supports electriquement conducteurs
DE10159890A1 (de) Vorbehandlungsprozess für das Beschichten von Aluminiumwerkstoffen
DE102004002303B4 (de) Verfahren zur Herstellung eines beschichteten Kohlenstoff/Kohlenstoff-Verbundwerkstoffes und danach hergestellter beschichteter Kohlenstoff/Kohlenstoff-Verbundwerkstoff
DE3602104A1 (de) Gleit- oder reibelement mit funktionsteil aus keramischem werkstoff sowie verfahren zu seiner herstellung
DE102011003977A1 (de) Schutzbeschichtung insbesondere für Bauteile aus der Luft- und Raumfahrttechnik und ihre Herstellung
WO2015165662A1 (fr) Couche de céramique résistant aux dépôts de cmas par nanoporosité
EP0359002B1 (fr) Procédé de revêtement d'objets métalliques et objets ainsi obtenus
DE10240291A1 (de) Verfahren zur Beschichtung von elektrisch leitfähigen Trägerwerkstoffen
DE2313104C3 (de) Verfahren zum Aufbringen einer festhaftenden Schicht nichtmetallischer Stoffe auf einer elektrisch leitenden Unterlage
DE102011089131A1 (de) Diffusionsbeschichtungsverfahren und damit hergestellte Chromschicht
DE102007049145A1 (de) Piezoaktor und Verfahren zu dessen 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

17P Request for examination filed

Effective date: 20040420

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 IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17Q First examination report despatched

Effective date: 20060410

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20061213