EP1017864A1 - Alloy for producing metal foamed bodies using a powder with nucleating additives - Google Patents
Alloy for producing metal foamed bodies using a powder with nucleating additivesInfo
- Publication number
- EP1017864A1 EP1017864A1 EP98946304A EP98946304A EP1017864A1 EP 1017864 A1 EP1017864 A1 EP 1017864A1 EP 98946304 A EP98946304 A EP 98946304A EP 98946304 A EP98946304 A EP 98946304A EP 1017864 A1 EP1017864 A1 EP 1017864A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- powder
- metal
- silicon
- particles
- aluminum
- 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
Links
Classifications
-
- 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
-
- 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
- B22F3/1125—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers involving a foaming process
-
- 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
- B22F3/115—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by spraying molten metal, i.e. spray sintering, spray casting
-
- 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
- C22C1/1036—Alloys containing non-metals starting from a melt
- C22C1/1042—Alloys containing non-metals starting from a melt by atomising
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0052—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides
- C22C32/0063—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides based on SiC
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
Definitions
- the invention relates to an alloy for producing metal foam bodies, a method for producing the alloy with certain additives for the production of metal foam bodies.
- Various processes for the production of metal foam bodies consist essentially in that a gas-releasing blowing agent is added to an alloy powder or a powder mixture of alloy components, an unexpanded semi-finished product first being produced and this semi-finished product subsequently being heated, preferably to a temperature above the decomposition temperature of the blowing agent is brought to foaming in the temperature range of the melting point of the metal alloy, after which the body thus foamed is then cooled.
- the semi-finished product can be foamed freely or in a mold, and metal foams with a density of about 0.3 to 1.7 g / cm 3 can be produced using aluminum or aluminum alloys.
- a method for producing porous metal bodies is described, for example, in DE-40 18 360 Cl and consists of the following steps: producing a mixture of at least one metal powder and at least one gas-releasing blowing agent powder, hot compacting this mixture into a semi-finished product at a temperature at which the compound the metal powder particles are predominantly made by diffusion and at a pressure which is high enough to prevent the decomposition of the blowing agent, such that the metal particles are in a solid connection with one another and constitute a gas-tight seal for the gas particles of the blowing agent, heating the same produced semi-finished product to a temperature above the decomposition temperature of the blowing agent, preferably in Temperature range of the melting point of the metal used, then cooling of the foamed body.
- the invention is therefore based on the problem of producing a foam structure that is as uniform as possible and achieving strength properties that are as favorable as possible when producing a foamable metal alloy, in particular an aluminum alloy, in order to achieve the desired properties.
- a metal alloy made of a metal matrix with an addition of a powder made of or with nucleating particles, which cause uniform bubble formation and homogeneous foam structure is proposed according to the invention, an aluminum alloy being preferably used for the metal matrix and an addition of uniformly distributed silicon for nucleation -, Silicon carbide, aluminum oxide and / or Titanium ⁇ dpitate is added.
- the particle size is preferably less than 30 ⁇ m.
- Small, evenly distributed silicon particles are particularly advantageous, which arise when spraying ubereutectic AlSi melts with up to about 50% silicon in the individual powder particles (Fig. 2).
- the manufacturing process is described in patent application 198 01 941.6 by the same applicant regarding a wear-resistant aluminum alloy, in particular for the manufacture of cylinder liners.
- the structure of an extruded profile, which was produced from an AlMgSi powder mixture with 10% silicon additive in the form of the powder grains described above, is shown in Figure 3.
- the silicon particles have a uniform size between approximately 10 - 30 ⁇ and are evenly distributed in the matrix.
- a method for the production of metal foam bodies is furthermore performed with the steps: production of a homogeneous mixture of at least one metal powder forming a metal matrix, a powder made of or with nucleating particles, uniform bubble formation and homogeneous foam structure and at least one gas-releasing blowing agent powder, filling the mixture into a mold, if necessary compacting under pressure, for. B. by cold or hot isostatic pressing, subsequent hot forming, z. B.
- the solution to the problem mentioned at the outset is also the use of a powder consisting of or with nucleating particles which produce uniform bubbles and a homogeneous foam structure as an additive to a mixture of at least one metal powder forming a metal matrix and at least one gas-releasing blowing agent powder in the production of metal foam bodies, wherein the powder can consist of particles of silicon, silicon carbide, aluminum oxide and / or titanium boride, which have a particle size smaller than 30 ⁇ m.
- a powder with uniformly distributed particles of a ubereutectic aluminum-silicon alloy with a portion of the silicon in the form of silicon primary crystals can be used the particles of the ubereutectic
- Aluminum-silicon alloy of less than 12% by weight based on the metal alloy.
- the very distant particle structure in the additive added as a powder is crucial for uniform bubble formation and thus for a homogeneous foam structure, since the particles in this fine distribution, in particular the silicon primary crystals, act as nucleating agents for the bubble development.
- the foamable aluminum alloy can be, for example, an aluminum powder alloy with a blowing agent, for example titanium hydride (T ⁇ h2) and a powder of a ubereutectic aluminum-silicon alloy with a proportion of silicon in the form of
- a blowing agent for example titanium hydride (T ⁇ h2)
- Siliciumprimark ⁇ stallen m the powder of the ubereutectic aluminum-silicon alloy of less than 12 wt .-% based on the metal alloy.
- the mixture is filled into a mold and compacted under pressure without the blowing agent powder decomposing.
- the preliminary material thus produced can then be hot pressed or hot rolled or hot extruded without foaming. If this semi-finished product is heated up to about 800 ° C for foaming, the blowing agent releases trapped gas, so that
- Foam aluminum alloy powder If the foaming of the semi-finished product is carried out in a mold, the foam fills the contour of the mold cavity, takes on its shape and has a density of about 0.3 to 1.7 g / cm 3 depending on the degree of foaming and the type of blowing agent addition.
- the foamed aluminum alloy has essentially the same size and evenly distributed, closed pores, is very pressure-resistant, has a low weight and gives the molded article the strength required for the respective application.
- the production of foam products from an aluminum alloy is only mentioned as an example.
- the invention also extends to foam products made of any foamable metal to which a powder with nucleating particles has been added for uniform bubble formation and a homogeneous foam structure.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Powder Metallurgy (AREA)
- Filtering Materials (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19737957 | 1997-08-30 | ||
DE19737957 | 1997-08-30 | ||
DE19810979 | 1998-03-13 | ||
DE19810979A DE19810979C2 (en) | 1997-08-30 | 1998-03-13 | Aluminum alloy for the production of aluminum foam bodies using a powder with nucleating additives |
PCT/EP1998/005036 WO1999011832A1 (en) | 1997-08-30 | 1998-08-08 | Alloy for producing metal foamed bodies using a powder with nucleating additives |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1017864A1 true EP1017864A1 (en) | 2000-07-12 |
EP1017864B1 EP1017864B1 (en) | 2001-11-07 |
Family
ID=26039579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98946304A Expired - Lifetime EP1017864B1 (en) | 1997-08-30 | 1998-08-08 | Alloy for producing metal foamed bodies using a powder with nucleating additives |
Country Status (6)
Country | Link |
---|---|
US (1) | US6332907B1 (en) |
EP (1) | EP1017864B1 (en) |
JP (1) | JP3823024B2 (en) |
AT (1) | ATE208435T1 (en) |
ES (1) | ES2167938T3 (en) |
WO (1) | WO1999011832A1 (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2789187B1 (en) | 1998-11-19 | 2001-11-30 | Cirtes Ct D Ingenierie De Rech | PROCESS FOR PRODUCING MECHANICAL PARTS, IN PARTICULAR PROTOTYPES, BY DECOMPOSITION INTO STRATES, ELEMENTARY STRATES OBTAINED ACCORDING TO THE PROCESS AND MECHANICAL PARTS THUS OBTAINED |
FR2808896B1 (en) * | 2000-05-15 | 2003-05-09 | Cirtes Ct D Ingenierie De Rech | DEVICE FOR PRODUCING PLATES FOR A RAPID PROTOTYPING PROCESS, METHOD FOR MACHINING AND ASSEMBLING SUCH PLATES AND PROTOTYPED PARTS THUS OBTAINED |
EP1397223B1 (en) * | 2001-05-19 | 2007-03-21 | Goldschmidt GmbH | Production of metal foams |
US7195662B2 (en) * | 2001-06-15 | 2007-03-27 | Huette Klein-Reichenbach Gesellschaft Mbh | Device and process for producing metal foam |
CA2389939A1 (en) * | 2002-06-25 | 2003-12-25 | Alicja Zaluska | New type of catalytic materials based on active metal-hydrogen-electronegative element complexes for reactions involving hydrogen transfer |
FR2845492B1 (en) | 2002-10-07 | 2004-11-26 | Cirtes Src | MECHANICAL PART WITH AT LEAST ONE FLUID TRANSPORT CIRCUIT AND METHOD FOR DESIGNING SAME |
EP1593008B1 (en) | 2003-02-06 | 2008-01-30 | Cirtes Src SA Cooperative d'Ues | Method of optimising the joints between layers in modelling or prototyping involving layer decomposition, and parts thus obtained |
DE102005005041A1 (en) * | 2005-02-03 | 2006-08-10 | Märkisches Werk GmbH | Valve for controlling the gas exchange, in particular in internal combustion engines |
JP4189401B2 (en) * | 2005-10-05 | 2008-12-03 | 本田技研工業株式会社 | Method for producing foamed aluminum |
CN101855325A (en) * | 2007-11-09 | 2010-10-06 | 火星工程有限公司 | Nitrous oxide fuel blend monopropellants |
JP2010209374A (en) * | 2009-03-09 | 2010-09-24 | Nippon Light Metal Co Ltd | Foamed aluminum fitted with outer surface coating and method for producing the same |
WO2011005885A1 (en) * | 2009-07-07 | 2011-01-13 | Firestar Engineering Llc | Tiered porosity flashback suppressing elements for monopropellant or pre-mixed bipropellant systems |
US20110111250A1 (en) * | 2009-11-10 | 2011-05-12 | Ken Evans | Process for producing a foamed metal article |
WO2014052019A1 (en) * | 2012-09-28 | 2014-04-03 | Dow Global Technologies Llc | Foamed-metal components for wireless-communication towers |
CN104404287B (en) * | 2014-11-17 | 2017-01-04 | 界首市一鸣新材料科技有限公司 | A kind of process using foamed ceramics auxiliary to produce foamed aluminium |
CN111394605A (en) * | 2020-03-20 | 2020-07-10 | 江苏大学 | TiB2Preparation method of particle reinforced foamed aluminum/aluminum alloy |
CN113695857B (en) * | 2021-09-09 | 2022-05-24 | 西北有色金属研究院 | Preparation method of micro-flow porous metal material |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3087807A (en) | 1959-12-04 | 1963-04-30 | United Aircraft Corp | Method of making foamed metal |
DE2362293A1 (en) * | 1973-12-14 | 1975-06-19 | Technical Operations Basel Sa | Foamed or cellular metals prodn - from aluminium using titanium hydride, and reinforced with steel inclusions |
US4969428A (en) * | 1989-04-14 | 1990-11-13 | Brunswick Corporation | Hypereutectic aluminum silicon alloy |
NO172697C (en) | 1989-07-17 | 1993-08-25 | Norsk Hydro As | PROCEDURE FOR THE MANUFACTURING OF PARTICULAR REINFORCED METAL FOAM AND RESULTING PRODUCT |
US5112697A (en) * | 1989-09-06 | 1992-05-12 | Alcan International Limited | Stabilized metal foam body |
DE4018360C1 (en) * | 1990-06-08 | 1991-05-29 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De | Porous metal body prodn. - involves compaction at low temp. followed by heating to near melting point of metal |
DE4101630A1 (en) * | 1990-06-08 | 1991-12-12 | Fraunhofer Ges Forschung | METHOD FOR PRODUCING FOAMABLE METAL BODIES AND USE THEREOF |
DE69121242T2 (en) * | 1990-08-27 | 1997-01-23 | Alcan Int Ltd | LIGHTWEIGHT METAL WITH INSULATED PORES AND ITS PRODUCTION |
JPH0688154A (en) * | 1992-09-04 | 1994-03-29 | Mitsubishi Kasei Corp | Metal compoisition and production of foamed metal composition |
DE4340791A1 (en) | 1993-11-23 | 1995-05-24 | Admos Gleitlager Gmbh Berlin | Prodn. of porous metal components |
DE19651197C2 (en) * | 1995-12-15 | 1999-10-28 | Susan Dietzschold | Material for producing porous metal bodies |
-
1998
- 1998-08-08 EP EP98946304A patent/EP1017864B1/en not_active Expired - Lifetime
- 1998-08-08 JP JP2000508834A patent/JP3823024B2/en not_active Expired - Lifetime
- 1998-08-08 AT AT98946304T patent/ATE208435T1/en active
- 1998-08-08 WO PCT/EP1998/005036 patent/WO1999011832A1/en active IP Right Grant
- 1998-08-08 ES ES98946304T patent/ES2167938T3/en not_active Expired - Lifetime
- 1998-08-08 US US09/486,454 patent/US6332907B1/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9911832A1 * |
Also Published As
Publication number | Publication date |
---|---|
US6332907B1 (en) | 2001-12-25 |
JP2001515140A (en) | 2001-09-18 |
JP3823024B2 (en) | 2006-09-20 |
EP1017864B1 (en) | 2001-11-07 |
ATE208435T1 (en) | 2001-11-15 |
ES2167938T3 (en) | 2002-05-16 |
WO1999011832A1 (en) | 1999-03-11 |
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