EP2427284A2 - Procédé du domaine de la métallurgie des poudres pour fabriquer une mousse métallique - Google Patents

Procédé du domaine de la métallurgie des poudres pour fabriquer une mousse métallique

Info

Publication number
EP2427284A2
EP2427284A2 EP10736959A EP10736959A EP2427284A2 EP 2427284 A2 EP2427284 A2 EP 2427284A2 EP 10736959 A EP10736959 A EP 10736959A EP 10736959 A EP10736959 A EP 10736959A EP 2427284 A2 EP2427284 A2 EP 2427284A2
Authority
EP
European Patent Office
Prior art keywords
powder
metal
metal foam
mass
underlying
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.)
Granted
Application number
EP10736959A
Other languages
German (de)
English (en)
Other versions
EP2427284B1 (fr
Inventor
Manas Mukherjee
Catalina Jimenez
John Banhart
Francisco Garcia-Moreno
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.)
Helmholtz Zentrum Berlin fuer Materialien und Energie GmbH
Original Assignee
Helmholtz Zentrum Berlin fuer Materialien und Energie 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 Helmholtz Zentrum Berlin fuer Materialien und Energie GmbH filed Critical Helmholtz Zentrum Berlin fuer Materialien und Energie GmbH
Publication of EP2427284A2 publication Critical patent/EP2427284A2/fr
Application granted granted Critical
Publication of EP2427284B1 publication Critical patent/EP2427284B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B22F3/10—Sintering only
    • B22F3/11—Making porous workpieces or articles
    • B22F3/1121—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers
    • 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
    • C22C1/0416—Aluminium-based alloys
    • 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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/11—Making amorphous alloys

Definitions

  • the invention relates to a powder metallurgical process for the production of metal foam.
  • a process for the production of metal foams with blowing agent or gas-releasing agent (eg US 3,087,807 - ZrH 1 , O i as gas-releasing agent; US 2,935,396 - CdCO 3 or MgCO 3 as gas-releasing agent; US 2,983,597 - TiH 2 or ZrH 2 as blowing agent ) have been known for a long time.
  • blowing agent or gas-releasing agent eg US 3,087,807 - ZrH 1 , O i as gas-releasing agent; US 2,935,396 - CdCO 3 or MgCO 3 as gas-releasing agent; US 2,983,597 - TiH 2 or ZrH 2 as blowing agent
  • Powder metallurgical processes for the production of metal foams have also been developed for years and the metal foams produced have been investigated for their properties.
  • such a powder metallurgical process comprises the following process steps: mixing at least one metal powder and one blowing agent powder, then compacting to form a dense, foamable semi-finished product. If this semifinished product is heated above the melting point, it expands and the metal is converted into a semi-liquid, viscous state, at the same time releasing gas from the decomposing propellant and foaming the semifinished product.
  • DE 101 15 230 A1 describes a powder metallurgical process in which a metal compound is selected as the propellant-containing powder whose metal component consists exclusively of one or more metals of the powdery metallic material to be foamed, in order to the metal component to change the alloy composition to a small extent and to cause no metallic impurities.
  • Preferred propellants are salts which are selected from acetates, hydrates, hydroxides, hydrides and carbonates or mixed salts thereof and which are particularly efficient gas formers which, when decomposed, preferably form hydrogen, carbon dioxide, carbon monoxide, water and / or methane.
  • DE 10 2005 037 305 A1 describes a process in which the metal powder was first pressed under mechanical pressure and a temperature of up to 400 ° C. to form a dimensionally stable semifinished product, then in a pressure-tight chamber at a selected initial pressure of is heated up to 5 MPa to the melting or the solidus temperature of the metal powder. After reaching this temperature, the pressure is reduced defined, the semi-finished foams up, the resulting metal foam solidifies during the final lowering of the temperature.
  • This method is relatively expensive due to the necessity of pressure-tight containers.
  • the powder metallurgical process comprises
  • Production of metal foam at least the method steps: Mixing of a metal powder from at least the metal underlying the metal foam or the metals underlying the metal foam with Al (1 -x) Mg (x) with 10 mass% ⁇ x ⁇ 100 mass% as a gas generator in the form of metal powder in a concentration of 4 to 50
  • pre-alloyed Al-Mg metal powder is used.
  • the compacting of the metal powder mixture takes place for example by means of uniaxial compaction or by extrusion.
  • Al powder or Zn powder in a concentration of 50 to 96% by mass with Al (1 -x) Mg (x) is mixed as a remainder.
  • Al powder or Zn powder in a concentration of 50 to 96% by mass with Al (1 -x) Mg (x) is mixed as a remainder.
  • up to 40 mass% Cu powder or up to 15 mass% Si powder or up to 40 mass% Zn powder may optionally be used.
  • the lowering of the melting temperature of a Zn-based alloy is e.g. realized by the use of up to 6% by mass of Al powder instead of the Zn powder.
  • the invention also relates to the use of Al (1-x) Mg (x) alloy with 10 mass% ⁇ x ⁇ 100 mass% both as a gas generator and as an alloying ingredient in the production of metal foams.
  • Another advantage of the invention is - as already mentioned - is that with the admixture of Al (1-x) Mg (x) powder with 10 mass% ⁇ x ⁇ 100 mass% of the melting point of the AI or Zn-based Alloy was lowered.
  • Fig. 1 Recording of an Al-based metal foam according to the prior
  • FIG. 2 Recording of an Al-based metal foam produced according to the inventive method
  • FIG. 3 Microscope image of a Zn-based metal foam produced by the method according to the invention
  • FIG. 5 Stress-pressure behavior of the Al-based metal foam according to FIG. 5
  • FIG. 6 Projection area extent of a Zn-based metal foam and temperature of the foaming process as a function of time.
  • FIGS. 1 and 2 each show, for comparison, a receptacle of an Al-based metal foam produced in accordance with a known one powder metallurgical process with blowing agent (FIG. 1) and without blowing agent (FIG. 2), ie produced according to the process of the invention.
  • FIGS. 1 and 2 each show, for comparison, a receptacle of an Al-based metal foam produced in accordance with a known one powder metallurgical process with blowing agent (FIG. 1) and without blowing agent (FIG. 2), ie produced according to the process of the invention.
  • FIGS. 1 and 2 each show, for comparison, a receptacle of an Al-based metal foam produced in accordance with a known one powder metallurgical process with blowing agent (FIG. 1) and without blowing agent (FIG. 2), ie produced according to the process of the invention.
  • FIGS. 1 and 2 each show, for comparison, a receptacle of an Al-based metal foam produced in accord
  • a powder mixture of 94% by mass Zn powder and 6% by mass AIMg50 powder is prepared to produce a metal foam 0 C and 300 MPa is compacted.
  • the foaming process then takes place at 400 ° C.
  • the average diameter of the pores is 500 microns, the sample density 1, 1 like "3 .
  • FIG. 4 shows a microscope image of the foam structure of an Al-based metal foam produced by the method according to the invention, now at a higher magnification than in Fig. 1.
  • This metal foam is prepared as follows: For the preparation of the powder mixture is 60 mass% AI powder and 30 mass% AIMg50 powder and 10 mass% Cu powder used. The Cu powder was added to lower the melting point of the alloy. The compaction takes place at 400 0 C and a pressure of 300 MPa. For the foaming of the compacted sample, a temperature of 600 0 C is set. The Al-based metal foam thus prepared has a density of 0.6 "3" and pores having an average diameter of 800 ⁇ m.
  • FIG. 5 shows the curve for the stress-strain behavior of a metal foam with the composition AIMgI 5Cu10, which has a density of 0.72 "3 and an average diameter of the pores of 1 mm produced metal foams have shown that its compressive strength and rigidity are at least as good as other standard foams.
  • the projection area extent (expansion of the area of the metal foam in the plan view) of a Zn-based metal foam of composition ZnAl5Mg5 and the temperature of the foaming process are shown as a function of time in FIG. It can be seen that the area grows to about four times its original size in the foaming process. That is, there is sufficient foam expansion and the foam remains very stable in the expanded, liquid state without collapsing after a predetermined period of time, as is common in foams made by prior art methods with blowing agents.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Abstract

L'invention concerne un procédé du domaine de la métallurgie des poudres pour fabriquer une mousse métallique, pouvant être mis en oeuvre uniquement avec des éléments constitutifs propres aux alliages, qui comprend au moins les étapes consistant à mélanger une poudre constituée au moins du métal constituant la base de ladite mousse ou des métaux constituant la base de ladite mousse, x répondant à la formule: Al(1-x)Mg(x), et à l'équation : 10% pds = x = 100% pds, en tant qu'agent de génération de gaz sous forme de poudre métallique dans une concentration comprise entre 4 et 50% pds; à comprimer le mélange de poudre, puis à chauffer les comprimés à pression atmosphérique à une température supérieure au point de fusion de la matrice métallique pour générer une mousse métallique liquide, et enfin refroidir la mousse métallique microcellulaire obtenue à une température inférieure à la température de solidus de la matrice métallique.
EP10736959.7A 2009-05-05 2010-04-30 Procédé du domaine de la métallurgie des poudres pour fabriquer une mousse métallique Active EP2427284B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009020004A DE102009020004A1 (de) 2009-05-05 2009-05-05 Pulvermetallurgisches Verfahren zur Herstellung von Metallschaum
PCT/DE2010/000512 WO2010127668A2 (fr) 2009-05-05 2010-04-30 Procédé du domaine de la métallurgie des poudres pour fabriquer une mousse métallique

Publications (2)

Publication Number Publication Date
EP2427284A2 true EP2427284A2 (fr) 2012-03-14
EP2427284B1 EP2427284B1 (fr) 2014-12-31

Family

ID=42932377

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10736959.7A Active EP2427284B1 (fr) 2009-05-05 2010-04-30 Procédé du domaine de la métallurgie des poudres pour fabriquer une mousse métallique

Country Status (3)

Country Link
EP (1) EP2427284B1 (fr)
DE (1) DE102009020004A1 (fr)
WO (1) WO2010127668A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110111250A1 (en) * 2009-11-10 2011-05-12 Ken Evans Process for producing a foamed metal article
DE102011089566A1 (de) 2011-12-22 2013-06-27 Tesa Se Liner zum Schutz von Klebemassen
CN107763371B (zh) * 2017-10-27 2019-09-27 合肥紫金钢管股份有限公司 一种钢套钢保温蒸汽钢管的加工工艺
DE102021126310A1 (de) 2021-10-11 2023-04-13 HAVEL metal foam GmbH Verfahren und Vorrichtung zum Herstellen einer aufschäumbaren, bandförmigen Presspulver-Metallplatine mittels Kaltwalzen sowie Presspulver-Metallplatine
CN114905040B (zh) * 2022-05-13 2023-08-08 广州大学 一种密度梯度泡沫金属及其制备方法和应用

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2935396A (en) 1957-03-07 1960-05-03 Dow Chemical Co Cellularized light metal
US2983597A (en) 1959-06-11 1961-05-09 Lor Corp Metal foam and method for making
US3087807A (en) 1959-12-04 1963-04-30 United Aircraft Corp Method of making foamed metal
DE2006445C3 (de) * 1969-02-19 1975-01-02 Ethyl Corp., Richmond, Va. (V.St.A.) Verfahren zur Herstellung von Aluminiumschaumformkörpern
JPS5440209A (en) * 1977-09-07 1979-03-29 Nippon Dia Clevite Co Method of producing porous body of aluminum and alloys thereof
DE19849600C1 (de) * 1998-10-28 2001-02-22 Schunk Sintermetalltechnik Gmb Verfahren zur Herstellung von einem metallischen Verbundwerkstoff
DE10115230C2 (de) 2000-03-28 2002-11-28 Fraunhofer Ges Forschung Verfahren zur Herstellung poröser Metallkörper und Verwendung derselben
RU2200647C1 (ru) * 2001-07-17 2003-03-20 Литвинцев Александр Иванович Способ производства пористых полуфабрикатов из порошков алюминиевых сплавов
AT413344B (de) * 2003-01-13 2006-02-15 Arc Leichtmetallkompetenzzentrum Ranshofen Gmbh Verfahren zur herstellung von metallschaumkörpern
DE102005037305B4 (de) * 2005-08-02 2007-05-16 Hahn Meitner Inst Berlin Gmbh Verfahren zur pulvermetallurgischen Herstellung von Metallschaumstoff und von Teilen aus Metallschaumstoff

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010127668A2 *

Also Published As

Publication number Publication date
WO2010127668A3 (fr) 2011-03-24
EP2427284B1 (fr) 2014-12-31
WO2010127668A2 (fr) 2010-11-11
DE102009020004A1 (de) 2010-11-11

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