EP2668311B1 - Bande d'aluminium à haute conductivité thermique et electrique - Google Patents

Bande d'aluminium à haute conductivité thermique et electrique Download PDF

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Publication number
EP2668311B1
EP2668311B1 EP12703730.7A EP12703730A EP2668311B1 EP 2668311 B1 EP2668311 B1 EP 2668311B1 EP 12703730 A EP12703730 A EP 12703730A EP 2668311 B1 EP2668311 B1 EP 2668311B1
Authority
EP
European Patent Office
Prior art keywords
strip
functional particles
foil
thermally
highly conductive
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.)
Not-in-force
Application number
EP12703730.7A
Other languages
German (de)
English (en)
Other versions
EP2668311A1 (fr
Inventor
Volker Denkmann
Ulrich Hampel
Andreas Siemen
Kathrin Eckhard
Willi Schenkel
Oliver SEIFFERTH
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.)
Speira GmbH
Original Assignee
Hydro Aluminium Rolled Products GmbH
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 Hydro Aluminium Rolled Products GmbH filed Critical Hydro Aluminium Rolled Products GmbH
Publication of EP2668311A1 publication Critical patent/EP2668311A1/fr
Application granted granted Critical
Publication of EP2668311B1 publication Critical patent/EP2668311B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/02—Constructions of heat-exchange apparatus characterised by the selection of particular materials of carbon, e.g. graphite
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H01B1/023—Alloys based on aluminium
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/32—Filling or coating with impervious material
    • H01B13/321—Filling or coating with impervious material the material being a powder

Definitions

  • the invention relates to a tape or a film consisting of aluminum or an aluminum alloy, which or which has an outer oxide layer.
  • the invention relates to a method for producing a tape according to the invention or a film according to the invention and its use.
  • Aluminum or aluminum alloys are often used for electrically and / or thermally conductive components. Examples of these are solar absorbers, which are used in the field of solar thermal energy, ie for the production of heat from solar radiation. Battery electrodes, printed circuit boards, but also current-carrying cables and their plugs and contacts are also often made of aluminum, since aluminum or aluminum alloys have particularly low electrical resistances.
  • an aluminum oxide layer which usually has a thickness of 2 to 4 nm, forms on a strip of aluminum or an aluminum alloy within a short time in air. This aluminum oxide layer is on the one hand desired to protect the aluminum or aluminum alloy from further corrosion.
  • this aluminum oxide layer has significantly lower thermal and electrical conductivities, so that in particular at contact points between two different components, problems arise with regard to heat or current transmission.
  • An attempt has been made to provide tapes or foils of aluminum alloys with highly conductive coatings.
  • the aluminum ribbon core can not contribute as much as possible to the conductivity.
  • the electrical conductivity, but also the thermal conductivity is therefore in need of improvement.
  • Documents US 2007/0151850 A1 . US 2005/0040090 A1 and EP 2 243 860 A2 disclose aluminum substrates with a nanotube alumina layer.
  • the object of the present invention is to provide a band or a foil consisting of aluminum or an aluminum alloy, which or which has a consistently high thermal and / or electrical conductivity, independently of the formation of an aluminum oxide layer.
  • a method for producing a tape according to the invention or a film according to the invention and advantageous uses of the tape according to the invention and the film according to the invention are to be proposed.
  • the above-described object is achieved in that on one or both sides of the tape or the film thermally and / or electrically highly conductive functional particles are arranged, which penetrate the oxide layer of the tape or the film.
  • the thermally and / or electrically highly conductive functional particles arranged on the surface of the tape according to the invention or the film according to the invention make it possible, on account of their penetration through the aluminum oxide layer, the strip or the film according to the invention, regardless of the formation of the aluminum oxide layer, has on the surface thereof constant thermally and / or electrically highly conductive properties.
  • the thermally and / or electrically highly conductive functional particles direct the heat or electrical current directly through the oxide layer of the strip or foil of aluminum or an aluminum alloy into the core of the strip or foil made of aluminum or aluminum alloy.
  • the aluminum oxide layer which forms in air on the strip or the film consisting of aluminum or an aluminum alloy, no longer affects the thermal and / or electrical conductivity of the strip or film according to the invention.
  • electrically and / or thermally highly conductive nanotubes, nano-scaled carbon tubes and / or carbon fibers are provided as functional particles.
  • the nanoparticles mentioned are highly conductive and can penetrate the aluminum oxide layer, so that they can forward the electric current, for example, from the surface into the aluminum alloy or the aluminum of the interior of the strip or foil. The current and / or heat flow then takes place with the participation of the entire strip according to the invention or the entire film according to the invention.
  • Nanoscale carbon tubes and carbon fibers are also extremely thermally stable, so that the usual process steps for processing the tapes or films according to the invention pose no problem.
  • Components which have particularly good electrically and / or thermally conductive properties can be provided by producing a metal sheet from a strip according to the invention.
  • the sheet is usually formed by forming or by further process steps to a specific component, which has excellent electrical and / or thermal conductivities regardless of the formation of an aluminum oxide layer on the surface of the aluminum or aluminum alloy.
  • the above-described object is achieved by a method for producing a tape or a film in that the thermally and / or electrically highly conductive functional particles are mechanically introduced into the oxide layer of the surface of the tape or the film.
  • the term "mechanical introduction” is understood to mean that the thermally and / or electrically highly conductive functional particles are pressed into the surface of the strip or film according to the invention by applying a mechanical force.
  • This has the advantage that the aluminum oxide layer on the surface of the tape according to the invention or the films according to the invention can be penetrated in a simple manner, so that there is contact with the underlying core of the tape according to the invention or the film according to the invention.
  • the mechanical introduction of particles onto the surface of a workpiece is particularly simple and environmentally friendly.
  • a first embodiment of the method for producing a tape according to the invention or a film according to the invention is before the mechanical introduction the functional particles in the surface of the tape or the film an adhesion promoter or a primer applied to the tape or the film.
  • the primer or primer ensures that the nanoscale functional particles can be easily placed on the aluminum tape or film without being removed from the tape or film due to their size, for example by thermal energy or draft.
  • the mechanical introduction of the functional particles into the surface of the strip or film is achieved by rolling the functional particles into the surface of the strip or film.
  • this makes it possible to use conventional process steps for the production of strips or films made of aluminum or an aluminum alloy, so that only low investment costs are necessary to produce the strips or films according to the invention.
  • any rolling step can be used in the production of the tape according to the invention or the film according to the invention to arrange the functional particles on the surface of the tape such that they at least partially penetrate the oxide layer of the tape or the film.
  • all intermediate rolling steps are suitable for introducing the functional particles into the surface accordingly.
  • the rolling-in of the functional particles is preferably carried out by hot rolling, cold rolling and / or temper rolling.
  • temper rolling only a small or no change in thickness of the tape or the film is achieved in the rule, but a specific surface texture is introduced into the tape or the film.
  • This process can also be used to introduce the functional particles such as the commonly performed cold rolling or hot rolling of the strip or film in the production. In this case, the rolling of the functional particles succeeds regardless of whether the band has been produced from a rolling bar or cast directly and rolled.
  • a surface structure is introduced into the tape or the film and the functional particles are distributed on the textured surface and subsequently rolled.
  • the textured surface can be used, for example, to achieve specific distributions of the functional particles or to improve the adhesion of the particles to the surface of the belt or film, for example by collecting the nanoscale particles in depressions of the texture.
  • a particularly gentle introduction of the functional particles into the tape or film according to the invention is achieved by rolling the functional particles in 1 to 10 rolling steps.
  • For very large decreases in thickness can be problematic that the functional particles are not only present in the surface layer.
  • the Reductions in thickness per rolling step can be reduced, so that the functional particles are incorporated only in the surface areas.
  • the outlay for producing the strip or film according to the invention becomes greater.
  • the functional particles are preferably applied to the surface of the tape or the film prior to mechanical introduction into the surface in dispersion, suspension or powder form. If the functional particles are applied in dispersion or suspension forms, unintentional removal of the functional particles from the surface of the strip prior to rolling can be prevented in a simple manner since they are present with the liquid dispersion or suspension on the strip or film. In addition, the distribution of functional particles on the surface of the tape or the film succeeds particularly uniform. If the functional particles are applied in powder form to the tape or the film, for example, the rolling oil present on the tape or the film can be used to adhere the functional particles to the surface of the tape or film. Rolling oil is a constantly present during the mechanical processing of the tapes or films whose behavior is very well known before and after rolling. In addition, no additional substances for applying the functional particles to the tape or the film are needed.
  • solar absorbers are preferably produced using a tape according to the invention or a film according to the invention.
  • heat exchangers and other components which utilize the good thermal conductivity of aluminum can also be produced from a strip according to the invention or a film according to the invention.
  • Electrical contacts, battery electrodes, electrical circuit boards are other products that can be produced by the use of the tape according to the invention or the film according to the invention and have significant advantages in terms of electrical conductivity of the aluminum or aluminum alloy parts of the mentioned products.
  • Fig. 1 shows first in a schematic sectional view of an embodiment of the belt 1, which has an oxide layer 2 on both sides.
  • thermally and / or electrically highly conductive functional particles 3 are incorporated, which partially penetrate the oxide layer 2.
  • This in Fig. 1 illustrated embodiment of a belt 1 has unilaterally introduced functional particles.
  • the highly conductive functional particles 3 are in contact with the core material 1a of the strip 1, so that, for example, in the case of a current guide, the functional particles 3 forward the electric current without any problems to the core region of the strip 1a, which has a very good conductivity.
  • the aluminum oxide layer 2 then plays no role for the electrical and / or thermal conductivity of the tape 1 according to the invention or the film according to the invention.
  • the tape 1 according to the invention may, for example, have a thickness of 15 mm to 0.1 mm.
  • films according to the invention have thicknesses of 100 ⁇ m to 10 ⁇ m.
  • nanoscale carbon tubes so-called “carbon nanotubes” (CNT).
  • CNT carbon nanotubes
  • the thermally and / or electrically highly conductive functional particles can also be incorporated into the strip or foil during temper rolling.
  • the result is a like in Fig. 3 schematically illustrated band with a surface texture in which the thermally and / or electrically highly conductive functional particles are arranged.
  • the surface structure 4 is thus highly thermally and / or electrically conductive.
  • Fig. 4 shows a schematic representation of a manufacturing process for the tape or the film according to the invention.
  • Work rolls 5 are shown schematically, which reduce the strip 1 in its thickness.
  • a device 6 for example, in the form of suspension or dispersion thermally and / or electrically highly conductive functional particles 3 are applied to the belt or distributed on the surface of the belt.
  • the applying functional particles 3 can also be done in powder form. If the functional particles are distributed on the belt, they are incorporated via the work rolls 5 into the surface layer in such a way that they at least partially penetrate the oxide layer. In Fig. 4 For the sake of simplicity, the oxide layer is not shown.
  • the work rolls 5, for example, work rolls of a Hot rolling, a cold rolling or a temper rolling mill.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Laminated Bodies (AREA)

Claims (11)

  1. Brande ou feuille (1) constituée d'aluminium ou d'un alliage d'aluminium, laquelle par exemple présente une couche d'oxyde extérieure (2), auquel cas l'on place, sur l'un ou sur les deux côtés de ladite bande ou de ladite feuille, des particules (3) à haute conductivité thermique et/ou électrique qui pénètrent la couche d'oxyde (2) de ladite bande ou de ladite feuille (1), caractérisé en ce que l'on prévoit, en tant que particules (3), des nano-tubes à haute conductivité thermique et/ou électrique, des tubes nanométriques en carbone (CNT) et/ou des fibres de carbone appliqués mécaniquement dans la couche d'oxyde de la surface supérieure de la bande ou de la feuille.
  2. Tôle produite à partir d'une bande selon la revendication 1.
  3. Procédé destiné à produire une bande ou un feuille selon la revendication 1, caractérisé en ce que l'on prévoit, en tant que particules (3), des nano-tubes à haute conductivité thermique et/ou électrique, des tubes manométriques en carbone (CNT) et/ou des fibres de carbone et les particules (3) sont appliquées mécaniquement dans la couche d'oxyde de la surface supérieure de la bande ou de la feuille (1).
  4. Procédé selon la revendication 3,
    caractérisé en ce que
    l'on applique, avant l'application mécanique des particules (3) à haute conductivité thermique et/ou électrique sur la couche supérieure de la bande (1) ou de la feuille, un agent adhésif ou un primaire d'accrochage sur la bande ou la feuille.
  5. Procédé selon la revendication 3 ou 4,
    caractérisé en ce que
    les particules (3) à haute conductivité thermique et/ou électrique sont laminées au niveau de la surface supérieure de la bande ou de la feuille.
  6. Procédé selon la revendication 5,
    caractérisé en ce que
    le laminage des particules (3) à haute conductivité thermique et/ou électrique a lieu par laminage à chaud, laminage à froid et/ou par planage.
  7. Procédé selon la revendication 5 ou 6,
    caractérisé en ce que
    l'on applique, avant le laminage des particules (3) à haute conductivité thermique et/ou électrique, une structure de surface supérieure (4) dans la bande ou la feuille et les particules (3) à haute conductivité thermique et/ou électrique sont reparties et sont ensuite laminées sur la structure de surface supérieure texturée.
  8. Procédé selon une des revendications de 5 à 7,
    caractérisé en ce que
    les particules (3) à haute conductivité thermique et/ou électrique sont laminées en une à dix étapes de laminage dans la surface supérieure de la bande ou de la feuille. (1).
  9. Procédé selon une des revendications de 3 à 8,
    caractérisé en ce que
    les particules (3) à haute conductivité thermique et/ou électrique sont appliquées sur la couche supérieure de la bande ou de la feuille (1), avant l'application mécanique sur la couche supérieure, sous forme de dispersion, sous forme de suspension ou sous forme de poudre.
  10. Utilisation d'une bande ou d'une feuille selon la revendication 1 pour la production de conducteurs conduisant le courant électrique et/ou d'éléments de construction à haute conductivité thermique.
  11. Procédé selon la revendication 10,
    caractérisé en ce que
    la bande ou la feuille est utilisée pour la production de contacts électriques, d'électrodes de la pile, de cartes de circuit électroniques, d'absorbeurs solaires, d'échangeurs thermiques.
EP12703730.7A 2011-01-28 2012-01-26 Bande d'aluminium à haute conductivité thermique et electrique Not-in-force EP2668311B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011000395A DE102011000395A1 (de) 2011-01-28 2011-01-28 Thermisch und elektrisch hochleitfähiges Aluminiumband
PCT/EP2012/051232 WO2012101215A1 (fr) 2011-01-28 2012-01-26 Bande d'aluminium à haute conductivité thermique et électrique

Publications (2)

Publication Number Publication Date
EP2668311A1 EP2668311A1 (fr) 2013-12-04
EP2668311B1 true EP2668311B1 (fr) 2014-06-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP12703730.7A Not-in-force EP2668311B1 (fr) 2011-01-28 2012-01-26 Bande d'aluminium à haute conductivité thermique et electrique

Country Status (5)

Country Link
US (1) US20130309513A1 (fr)
EP (1) EP2668311B1 (fr)
CA (1) CA2825158A1 (fr)
DE (1) DE102011000395A1 (fr)
WO (1) WO2012101215A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014196006A1 (fr) * 2013-06-03 2014-12-11 富士通株式会社 Structure de dissipation de chaleur, procédé de production associé, et dispositif électronique
CN105401142A (zh) * 2015-11-04 2016-03-16 合肥海源机械有限公司 一种铝合金钠基润滑脂固化膜成型液及其制备方法
JP6810536B2 (ja) * 2016-04-25 2021-01-06 臼井国際産業株式会社 金属材およびその製造方法
CN112635920A (zh) * 2020-12-23 2021-04-09 江苏艾鑫科能源科技有限公司 一种用于新能源电池的铝排及其成型方法

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CA2350853A1 (fr) * 2001-06-15 2002-12-15 Groupe Minutia Inc. Methode d'etablissement de la conductivite electrique entre des conducteurs electriques recouverts d'oxyde
CA2470025C (fr) * 2001-12-21 2012-02-21 Battelle Memorial Institute Structures contenant des nanotubes de carbone, procedes de fabrication, et processus dans lesquels elles sont utilisees
KR100695124B1 (ko) * 2004-02-25 2007-03-14 삼성전자주식회사 카본나노튜브의 수평성장방법
US20060233692A1 (en) * 2004-04-26 2006-10-19 Mainstream Engineering Corp. Nanotube/metal substrate composites and methods for producing such composites
US20070116957A1 (en) * 2005-05-11 2007-05-24 Molecular Nanosystems, Inc. Carbon nanotube thermal pads
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US7820587B2 (en) * 2005-11-28 2010-10-26 Uchicago Argonne, Llc Porous anodic aluminum oxide membranes for nanofabrication
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KR100906746B1 (ko) * 2007-12-21 2009-07-09 성균관대학교산학협력단 탄소재료를 알루미늄 속에 캡슐화하는 방법
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EP2243860A3 (fr) * 2009-04-24 2011-11-23 ZYRUS Beteiligungsgesellschaft mbH & Co. Patente I KG Procédé de fabrication d'un revêtement d'absorbeur solaire

Also Published As

Publication number Publication date
DE102011000395A1 (de) 2012-08-02
CA2825158A1 (fr) 2012-08-02
US20130309513A1 (en) 2013-11-21
WO2012101215A1 (fr) 2012-08-02
EP2668311A1 (fr) 2013-12-04

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