DE102009003958A1 - Producing molded part provided with implementation of metallic conductor by metal injection molding, comprises providing the metallic conductor with electrically insulating material, and spraying the metallic conductor with metal powder - Google Patents

Producing molded part provided with implementation of metallic conductor by metal injection molding, comprises providing the metallic conductor with electrically insulating material, and spraying the metallic conductor with metal powder Download PDF

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Publication number
DE102009003958A1
DE102009003958A1 DE200910003958 DE102009003958A DE102009003958A1 DE 102009003958 A1 DE102009003958 A1 DE 102009003958A1 DE 200910003958 DE200910003958 DE 200910003958 DE 102009003958 A DE102009003958 A DE 102009003958A DE 102009003958 A1 DE102009003958 A1 DE 102009003958A1
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Germany
Prior art keywords
metallic conductor
conductor
insulating material
metal
ceramic
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Granted
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DE200910003958
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German (de)
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DE102009003958B4 (en
Inventor
Karl-Heinz Otto
Wendelin Winkelmüller
Jan G. Tönnies
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ELEMENT 22 GMBH, DE
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TIJET MEDIZINTECHNIK GmbH
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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
    • 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
    • B22F7/06—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 composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/08—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 composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
    • 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
    • B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
    • B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Powder Metallurgy (AREA)

Abstract

The method comprises providing a metallic conductor with an electrically insulating material that encloses the metallic conductor, spraying the metallic conductor with a metal powder under the formation of a green compact, debinding the green body receiving the metallic conductor under the formation of a brown compact, and sintering the brown compact under the formation of fixedly disposed molded part with the insulating material. The insulating material is a ceramic material. The conductor is inserted into a non-combustible ceramic tube. The ceramic is introduced on the conductor. The method comprises providing a metallic conductor with an electrically insulating material that encloses the metallic conductor, spraying the metallic conductor with a metal powder under the formation of a green compact, debinding the green body receiving the metallic conductor under the formation of a brown compact, and sintering the brown compact under the formation of fixedly disposed molded part with the insulating material. The insulating material is a ceramic material. The conductor is inserted into a non-combustible ceramic tube. The ceramic is introduced on the conductor by immersing the conductor in a ceramic emulsion. The metallic conductor consists of metal or metal alloy e.g. titanium or titanium alloy with a melting temperature exceeding the sintering temperature of the material of the molded part and the insulating layer consists of titanium oxide, which is formed on the conductor by anodic oxidation of the metallic conductor.

Description

Die Erfindung betrifft ein Verfahren zum Herstellen eines mit einer Durchführung eines metallischen Leiters versehenen Formteils durch Metallpulver-Spritzgießen (Metal Injection Moulding, MIM).The The invention relates to a method for producing a with a execution a metal conductor provided molding by metal powder injection molding (metal Injection Molding, MIM).

MIM-Formteile finden insbesondere in der Medizintechnik Verwendung, beispielsweise als Gehäuse von Herzschrittmachern oder Neurostimulatoren. Bei ihnen stellt sich das Problem, dass ein metallischer Leiter durch das Formteil durchgeführt werden muss, wobei die Durchführung absolut gasdicht auszubilden ist.MIM moldings find particular use in medical technology, for example as a housing of pacemakers or neurostimulators. Represents them itself the problem that a metallic conductor through the molding carried out must be, while carrying out is to form absolutely gas-tight.

Die hermetisch dichte Durchführung des metallischen Leiters wird bisher durch Löten bewirkt. Dies Verfahren ist aufwendig, bei medizinischen Anwendungen muss das Lot biokompatibel ausgewählt sein, wobei praktisch nur Gold in Betracht kommt. Die Ausbildung der Durchführung ist daher aufwendig.The hermetically sealed execution the metallic conductor is previously effected by soldering. This procedure is expensive, in medical applications, the solder must be biocompatible be selected where practically only gold comes into consideration. The training of the implementation is therefore consuming.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zu schaffen, das das Herstellen einer mit einer Durchführung eines metallischen Leiters versehenen, vorzugsweise aus Titan bestehenden MIM-Formteils auf einfache Weise ermöglicht.Of the Invention has for its object to provide a method the production of a provided with a passage of a metallic conductor, preferably made of titanium existing MIM molding in a simple manner allows.

Erfindungsgemäß wird diese Aufgabe gelöst durch Ummanteln des metallischen Leiters mit einem elektrisch isolierenden Material, Umspritzen des ummantelten Leiters mit dem Metallpulver unter Bildung eines Grünlings, Entbindern des den ummantelten Leiter aufnehmenden Grünlings unter Bildung eines Braunlings und Sintern des Braunlings unter Bildung des Formteils, der mit dem isolierenden Materials fest gefügt verbunden ist.According to the invention this Task solved by Sheathing the metallic conductor with an electrically insulating Material, encapsulating the coated conductor with the metal powder forming a green body, Deburring of the sheathed green receiving conductor under Formation of a brownling and sintering of the brownling to form the Molded part, which is firmly joined to the insulating material is.

Die Erfindung macht sich den Umstand zunutze, dass bei dem MIM-Verfahren bei dem Sintern eine erhebliche Schrumpfung stattfindet, die an festes Anpressen des um den Leiter gespritzten Pulvers mit der den Leiter umgebenden isolierende Schicht stattfindet, die aufgrund der hohen Temperaturen eine Verbindung beider bis in die metallische Kristallstruktur hinein bewirkt.The Invention exploits the fact that in the MIM process in the sintering, a considerable shrinkage takes place, the firm pressing of the powder sprayed around the conductor with the Head surrounding insulating layer takes place due to the high temperatures connect both to the metallic one Crystal structure causes it.

Bei einem bevorzugten Ausführungsbeispiel ist das isolierende Material ein keramisches Material, vorzugsweise mit einem Bestandteil an Metalloxiden, das ein nicht ausgebranntes Keramikröhrchen sein kann, in den der Leiter vor dem Sintern eingeschoben wird, wobei die Keramik durch Eintauchen des Leiters in eine keramische Emulsion auf den Leiter aufgebracht werden kann.at a preferred embodiment the insulating material is a ceramic material, preferably with an ingredient in metal oxides, which is a non-burned out ceramic tubes where the conductor is inserted before sintering, the ceramic being made by immersing the conductor in a ceramic Emulsion can be applied to the conductor.

Bei einem bevorzugten Ausführungsbeispiel besteht der metallische Leiter aus einem Metall oder einer Metalllegierung, mit einer über der Sintertemperatur des Formteils liegenden Schmelztemperatur, vorzugsweise aus Titan oder einer Titanlegierung, auf das eine isolierende Oxidschicht durch anodisches Oxidieren ausgebildet wird.at a preferred embodiment the metallic conductor made of a metal or a metal alloy, with one over the sintering temperature of the molding lying melting temperature, preferably made of titanium or a titanium alloy, onto which an insulating oxide layer is formed by anodizing.

Claims (7)

Verfahren zum Herstellen eines mit einer Durchführung eines metallischen Leiters versehenen Formteils durch Metallpulver-Spritzgießen (Metal Injection Moulding, MIM), gekennzeichnet durch – Versehen des metallischen Leiters mit einem diesen ummantelnden, elektrisch isolierenden Material, – Umspritzen des ummantelten Leiters mit dem Metallpulver unter Bildung eines Grünlings, – Entbindern des den ummantelten Leiter aufnehmenden Grünlings unter Bildung eines Braunlings und – Sintern des Braunlings unter Bildung eines mit dem isolierenden Materials fest verfügten Formteils.A method of making one with an implementation of a metallic conductor provided molding by metal powder injection molding (metal Injection Molding, MIM), characterized by - Mistake the metallic conductor with a this ummantelnden, electrically insulating material, - overmolding of the coated conductor with the metal powder to form a Green body, - Debinding of the sheathed conductor receiving green compact to form a Braunlings and - sintering of the brownling to form one with the insulating material firmly Molding. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das isolierende Material ein keramisches Material ist.Method according to claim 1, characterized in that that the insulating material is a ceramic material. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass der Leiter vor dem Sintern in ein nicht ausgebranntes keramisches Röhrchen eingeschoben wird.Method according to claim 2, characterized in that that the conductor before sintering in a non-burned out ceramic tube is inserted. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass die Keramik durch Eintauchen des Leiters in eine keramische Emulsion auf den Leiter aufgebracht wird.Method according to claim 2, characterized in that that the ceramic by immersing the conductor in a ceramic Emulsion is applied to the conductor. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das der metallische Leiter aus einem Metall oder einer Metalllegierung mit einer die Sintertemperatur des Materials Formteils übersteigenden Schmelztemperatur und die isolierende Schicht aus einem Oxid des Metalls bzw. der Metalllegierung besteht.Method according to claim 1, characterized in that that the metallic conductor of a metal or a metal alloy with a melting temperature exceeding the sintering temperature of the molding material and the insulating layer of an oxide of the metal or the Metal alloy exists. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass der metallische Leiter aus Titan oder einer Titanlegierung und die isolierende Schicht aus Titandioxid besteht, das durch anodisches Oxidieren des metallischen Leiters auf diesem ausgebildet wird.Method according to claim 5, characterized in that that the metallic conductor of titanium or a titanium alloy and the insulating layer consists of titanium dioxide, which is anodized Oxidizing the metallic conductor is formed on this. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Formteil aus Titan oder einer Titanlegierung besteht.Method according to one of the preceding claims, characterized in that the molded part is made of titanium or a titanium alloy consists.
DE200910003958 2009-01-07 2009-01-07 A method of manufacturing a feedthrough MIM molding Active DE102009003958B4 (en)

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DE200910003958 DE102009003958B4 (en) 2009-01-07 2009-01-07 A method of manufacturing a feedthrough MIM molding

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DE200910003958 DE102009003958B4 (en) 2009-01-07 2009-01-07 A method of manufacturing a feedthrough MIM molding

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3159039A1 (en) * 2015-10-21 2017-04-26 BIOTRONIK SE & Co. KG Durchführung eines medizinelektronischen gerätes und medizinelektronisches gerät

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3069760B1 (en) 2015-03-20 2020-04-29 BIOTRONIK SE & Co. KG Implantable electromedical device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10248888B4 (en) * 2002-10-18 2005-01-27 Forschungszentrum Jülich GmbH Process for the production of near net shape, metallic and / or ceramic components
US20080209723A1 (en) * 2002-09-30 2008-09-04 Cochlear Limited Feedthrough for electrical connectors

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080209723A1 (en) * 2002-09-30 2008-09-04 Cochlear Limited Feedthrough for electrical connectors
DE10248888B4 (en) * 2002-10-18 2005-01-27 Forschungszentrum Jülich GmbH Process for the production of near net shape, metallic and / or ceramic components

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3159039A1 (en) * 2015-10-21 2017-04-26 BIOTRONIK SE & Co. KG Durchführung eines medizinelektronischen gerätes und medizinelektronisches gerät

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