WO2003056046A1 - Fabrication par la metallurgie des poudres de corps au magnesium a partir de leur hydrure - Google Patents

Fabrication par la metallurgie des poudres de corps au magnesium a partir de leur hydrure Download PDF

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Publication number
WO2003056046A1
WO2003056046A1 PCT/DE2002/004221 DE0204221W WO03056046A1 WO 2003056046 A1 WO2003056046 A1 WO 2003056046A1 DE 0204221 W DE0204221 W DE 0204221W WO 03056046 A1 WO03056046 A1 WO 03056046A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnesium
sintering
hydride
semi
product
Prior art date
Application number
PCT/DE2002/004221
Other languages
German (de)
English (en)
Inventor
Eckard Aust
Tobias Benzler
Nico Eigen
Wolfgang Limberg
Original Assignee
Gkss-Forschungszentrum Geesthacht 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 Gkss-Forschungszentrum Geesthacht Gmbh filed Critical Gkss-Forschungszentrum Geesthacht Gmbh
Publication of WO2003056046A1 publication Critical patent/WO2003056046A1/fr

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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
    • 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
    • B22F3/001—Starting from powder comprising reducible metal compounds
    • 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
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/0408—Light metal alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

Definitions

  • the invention relates to a method for producing products such as components or semi-finished products from powdery materials by means of sintering processes based on magnesium or magnesium alloys.
  • Powdery materials based on magnesium have so far not been able to be processed into complex products in the form of components or into semi-finished products, since such products and / or semi-finished products have to be sintered in order to form their final shape or their preliminary final shape. Due to the extremely high reactivity of magnesium or magnesium base materials for oxygen sintering on an industrial scale is not possible. So far, magnesium base materials have been processed into semi-finished products or components or products by master forms from the liquid, plastic or pulpy (semi-solid or thixo,) state in the form of pressure, centrifugal, continuous or injection molding. The primary shaping of powder-form magnesium base materials has so far only been possible using the extrusion process.
  • the task is solved according to the invention in that the starting material is used in the form of the hydride of magnesium or magnesium alloys.
  • the advantage of the method according to the invention lies essentially in the fact that, as intended, metal powders based on magnesium materials make sintering possible and enable processing for the production of novel products, for example implants for medical technology.
  • the specific properties of magnesium or magnesium-based materials such as low weight with relatively high strength, can be brought to bear in combination with powder technology, which was previously not possible.
  • the close bond of magnesium to the hydrogen is used, i.e.
  • the method according to the invention also makes it possible for products to be produced in a quality close to the final shape of the product by press sintering and / or metal powder injection molding, it also being possible to achieve high production rates by means of the method according to the invention.
  • the hydrogen is expelled from the product and / or the semifinished product during the sintering process, so that components or semifinished products can then be sintered from powder particles.
  • the sintering process in which the hydrogen is expelled from the manufactured product and / or semi-finished product, can take place under inert gas or, in another embodiment of the method, can be carried out under vacuum, whereby the oxygen in the process step of expelling the hydrogen from the hydride of magnesium or Magnesium alloys is kept away.
  • the product and / or the semi-finished product are sintered above the dehydrogenation temperature of the hydride of magnesium or magnesium alloys.
  • Fig. 1 is a micrograph of sintered magnesium at 110 times magnification
  • Fig. 2 shows an X-ray diffractometer diagram.
  • the invention uses known techniques for the production of metal powders, the metal powder in the present case being powdered magnesium hydride or a powdered magnesium hydride mixture.
  • the term "powdery magnesium hydride” also includes powdery magnesium hydride alloys of any quantitative and qualitative composition.
  • techniques, process sequences and apparatuses and devices are used which are known in the prior art with regard to the processing and processing of metal powder and / or devices and equipment. Since that The method according to the invention makes extensive use of these known process techniques, so there is no need to go into further detail in order to understand the invention.
  • the invention uses pulverulent starting material based on pulverulent magnesium hydride which has been suitably produced beforehand. After the magnesium hydride has been shaped to produce a product into a shape which almost corresponds to the desired final shape, which also applies to the shape of a desired semi-finished product to be produced, the hydrogen is expelled from the product and / or the semi-finished product during the subsequent sintering process.
  • the hydrogen can be expelled under inert gas or in vacuo and at a temperature below the melting temperature of the respectively selected powdered magnesium or its desired alloys.
  • the product or the semifinished product is sintered. After the sintering process, either a finished product is available or a semi-finished product with the desired semi-finished product.
  • FIG. 1 shows an X-ray diffraction diagram of a sample which was produced by the method according to the invention.
  • the pronounced maxima correspond to the characteristic maxima for magnesium. This proves that the hydrogen is removed from the sample. is driven (no MgH2 phase in the sample).
  • Fig. 1 also shows that magnesium oxide is only present in traces in the sample.
  • FIG. 2 shows a section of the sample in a magnification of 110 times.
  • FIG. 2 also shows that the sintering process has taken place and that the sample has a dense structure.

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

Abstract

L'invention concerne un procédé de fabrication de produits et/ou demi-produits par frittage à partir de matières premières pulvérulentes à base de magnésium ou d'alliages de magnésium. Selon ce procédé, cette matière première est utilisée sous forme d'hydrure de magnésium ou d'alliages de magnésium.
PCT/DE2002/004221 2001-12-27 2002-11-15 Fabrication par la metallurgie des poudres de corps au magnesium a partir de leur hydrure WO2003056046A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10163763.2 2001-12-27
DE10163763A DE10163763B4 (de) 2001-12-27 2001-12-27 Verfahren zum Herstellen von Erzeugnissen wie Bauteile oder Halbzeuge aus pulverförmigen Werkstoffen auf der Basis von Magnesium oder Magnesiumlegierungen

Publications (1)

Publication Number Publication Date
WO2003056046A1 true WO2003056046A1 (fr) 2003-07-10

Family

ID=7710726

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/004221 WO2003056046A1 (fr) 2001-12-27 2002-11-15 Fabrication par la metallurgie des poudres de corps au magnesium a partir de leur hydrure

Country Status (2)

Country Link
DE (1) DE10163763B4 (fr)
WO (1) WO2003056046A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004053866A1 (de) * 2004-11-04 2006-05-11 Gkss-Forschungszentrum Geesthacht Gmbh Verfahren zur Herstellung von Erzeugnissen aus Magnesiumbasislegierungen durch Metallpulverspritzgießen
WO2006048075A2 (fr) * 2004-11-04 2006-05-11 Gkss-Forschungszentrum Geesthacht Gmbh Procede de production de produits a partir d'un materiau composite metallique
WO2006048076A1 (fr) * 2004-11-04 2006-05-11 Gkss-Forschungszentrum Geesthacht Gmbh Procede de production de composants metalliques

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2254549A (en) * 1938-11-12 1941-09-02 Small Louis Sintered metal composition
GB2019442A (en) * 1978-03-30 1979-10-31 Crucible Inc Method for producing powder metallurgy articles
US4560621A (en) * 1984-03-13 1985-12-24 The United States Of America As Represented By The United States Department Of Energy Porous metallic bodies
DE19827665A1 (de) * 1998-06-22 1999-12-23 Martin Kraemer Verfahren zur Herstellung von Diamantverbundwerkstoffen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2254549A (en) * 1938-11-12 1941-09-02 Small Louis Sintered metal composition
GB2019442A (en) * 1978-03-30 1979-10-31 Crucible Inc Method for producing powder metallurgy articles
US4560621A (en) * 1984-03-13 1985-12-24 The United States Of America As Represented By The United States Department Of Energy Porous metallic bodies
DE19827665A1 (de) * 1998-06-22 1999-12-23 Martin Kraemer Verfahren zur Herstellung von Diamantverbundwerkstoffen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004053866A1 (de) * 2004-11-04 2006-05-11 Gkss-Forschungszentrum Geesthacht Gmbh Verfahren zur Herstellung von Erzeugnissen aus Magnesiumbasislegierungen durch Metallpulverspritzgießen
WO2006048075A2 (fr) * 2004-11-04 2006-05-11 Gkss-Forschungszentrum Geesthacht Gmbh Procede de production de produits a partir d'un materiau composite metallique
WO2006048076A1 (fr) * 2004-11-04 2006-05-11 Gkss-Forschungszentrum Geesthacht Gmbh Procede de production de composants metalliques
WO2006048075A3 (fr) * 2004-11-04 2006-06-08 Geesthacht Gkss Forschung Procede de production de produits a partir d'un materiau composite metallique

Also Published As

Publication number Publication date
DE10163763A1 (de) 2003-07-17
DE10163763B4 (de) 2007-02-08

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