EP0483184A1 - Verfahren zur herstellung eines dispersionsverfestigten metallschaumes sowie verfahren zu seiner herstellung. - Google Patents
Verfahren zur herstellung eines dispersionsverfestigten metallschaumes sowie verfahren zu seiner herstellung.Info
- Publication number
- EP0483184A1 EP0483184A1 EP90910522A EP90910522A EP0483184A1 EP 0483184 A1 EP0483184 A1 EP 0483184A1 EP 90910522 A EP90910522 A EP 90910522A EP 90910522 A EP90910522 A EP 90910522A EP 0483184 A1 EP0483184 A1 EP 0483184A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal
- foam
- gas
- melt
- metal foam
- 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
- C22C1/08—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
- C22C1/08—Alloys with open or closed pores
- C22C1/083—Foaming process in molten metal other than by powder metallurgy
Definitions
- a process of manufacturing particle reinforced metal foam and product thereof A process of manufacturing particle reinforced metal foam and product thereof
- the present invention relates to a process of providing met foam and more particularly to a process resulting in provisi of thin wall close cell particle reinforced metal foam.
- foams There are several ways to produce foams. Different foaming tech niques are known such as incorporating hydrides in the molte metal or adding organic compounds which release gases on heat ing. Vapor deposition on polymeric substrates or casting o metal around granules which are then leached out leaving porous metal structure are other examples of providing metal with cellular structure.
- foams or ation using blowing agents are affecte by the surface tension and viscosity of the actual melt. Th viscosity counteracts bursting of the cell walls during a pro gressive increase in the volume of the formed bubbles, while low surface tension will favour formation of thin bubble walls.
- the properties of foams being gas-in-solid dispersions are largely determined by their density, but the cell size, struc ⁇ ture and their distribution are also important parameters in- fluencing the properties.
- foamed metals are produced by adding a gas evolving compound to the molten metal followed by heating of the resultant mixture to decompose the compound and to produce ex ⁇ panding cellulating gases.
- the foaming compound is usually metal hydride such as TiH 2 or ZrH 2 , and after the foaming step the mould is cooled to form a solid foam material. Cells of non- uniform structure and/or undesirably large size are experienced due to the difficulties with uniform distribution of the evolv ⁇ ing gas through the whole volume of the foamed metal.
- GB patent No. 1.287.994 discloses a process for preparation of metal foams applying a viscosity increasing agent comprising an inert gas or an oxygen containing material gaseous at the melt conditions and treating the thus produced viscous melt with a foaming agent.
- Air, nitrogen, carbon dioxide, argon and water are preferably used in the process as viscosity increasing agents in amounts from 1 to 6 grams per 100 grams of metal alloy.
- Metal hydrides are used as foaming agents (hafnium, titanium or zirconium hydrides) in amounts of from 0,5 to 1,0 grams per 100 grams of alloy.
- the increase in viscosity is enhanced by the presence of a promoter metal, e.g. from 4 to 7 weight% magnesium is used in aluminium alloys.
- a promoter metal e.g. from 4 to 7 weight% magnesium is used in aluminium alloys.
- a good mixing technique is required, the addition of foaming agents is usually carried out at a tempera ⁇ ture lower than addition of the viscosity increasing agent in a separate second vessel.
- the disclosed batchwise process, achiev ⁇ ing better foams with regard to uniform size and distribution of the cells, and claiming a certain reduction in the consumption of foaming agents, is a rather complicated time consuming and expensive process requiring several process steps and uni based on use of expensive heat decomposible gas evolving co pounds (hydrides) .
- European patent application No. 0 210 803 discloses a simil batchwise method of producing foamed metals based on use of fr 0,2 to 8,0 weight% metallic calcium as viscosity adjusting age and titanium hydride in amounts of from 1 to 3 weight% of t molten melt as foaming agent.
- Still another method of producing cellularized metal by decompo sition of a heat-decomposable gas evolving compound in molte metal is disclosed in US patent No. 3.297.431.
- the improvemen comprises addition of an intimately dispersed, finely divide powder to the metal prior to decomposition of the gas evolvin compound (carbonates or hydrides) , or dissolving of gas in th melt.
- the stabilizing powders may be metals or non-metals elements or compounds, and two wettable powders are preferen tially used where one of which forms a solid alloy with th metal.
- the gas is dissolved at one pressure and the evolved at a second lower pressure.
- a drawback in common for the hitherto known processes is tha all of them are batchwise operating processes using either ex pensive gas evolving compounds or dissolved gases as cellulatin means and viscosity increasing or stabilizing additives t achieve quality metal foams.
- Another object of the invention is to provide a method for up ⁇ grading of scrap metal material.
- Still another object of the invention is to provide a novel type of particle reinforced metal foam having improved mechanical properties.
- Fig. 1 shows schematically in the form of a flow-sheet the process of preparation of metal foam accord ⁇ ing to the invention.
- Fig. 2 displays a natural size contact print of the foamed metal sample prepared according to the invention
- Fig. 3 shows an optical metallograph picture of the closed cell Al-foam structure.
- Fig. 4 illustrates graphically results from a compres ⁇ sion test conducted on foam samples.
- a metal foam of the closed cell type structure having a uniform density and cell structure can be provided simply by feeding of finely dispersed cellulating gas into a molten particle reinforced metal matri composite material (PMMC) .
- PMMC metal matri composite material
- No special additives adjusting th viscosity of the melt or particular precautions with regard t the distribution of the cellulating gas bubbles through the mel were required.
- the gas bubbles rise to the top of the melt an form foam gradually increasing in volume.
- No tendency to burst ing of the foam cells when they reach the melt surface was ob served. This indicates a (highly) stabilized surface of the ga bubbles.
- the upper portion of the foam cake solidifies and ca be easily removed.
- Fig. 2 shows in natural size a photographic picture of th resultant foam sample removed as the solidified top part of th foam cake.
- the cross-section of the sample exhibits a unifor distribution of cells having a diameter in the range of from to 5 mm.
- the density of the sample was measured to 0,2 g/cm 3 .
- the achieved pores (cells) are essentially spherical and closed providing the foamed metal with isotropic properties in all directions, especially with regard to energy adsorption.
- Metallographic examination of the structure on the samples achieved from Example 1 reveals an extremely thin walled foam structure, as illustrated in Fig. 3.
- the wall thickness in this metallograph picture, magnification of 20, is in order of the reinforcing SiC particle size approximately 12 7 um.
- Fig. 4 The mechanical behaviour of the produced foam is represented in Fig. 4 illustrating the results from the testing of compressive stress conducted on the samples from Example 1.
- the achieved flat stress/strain curve from the samples having an initial height of 26 mm applying a crosshead velocity of 2 mm/min. is typical for this type of material as long as the cell structure did not collapse completely.
- the energy absorption of this foam was determined to be 2 kJ/1 foam, which is a very favourable value compared to the values reported in literature for commer ⁇ cially provided Al-foams.
- the achieved improved mechanical properties of the resultant foams are a result of a beneficial influence from the reinforcing particles incorporated in the cell walls.
- a a cellulating gas e.g. N 2 , Ar, C0 2 , He and even pressurized air which is normally easily available at low costs.
- the biggest potential of the presen invention is an up-grading of low grade composite scra material.
- This constantly increasing volume of composite scra today represents a considerable problem since it can not simpl be remelted or incorporated to the recycled secondary aluminium.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Powder Metallurgy (AREA)
- Laminated Bodies (AREA)
- Polyurethanes Or Polyureas (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT90910522T ATE100867T1 (de) | 1989-07-17 | 1990-07-11 | Verfahren zur herstellung eines dispersionsverfestigten metallschaumes sowie verfahren zu seiner herstellung. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO892925 | 1989-07-17 | ||
NO892925A NO172697C (no) | 1989-07-17 | 1989-07-17 | Fremgangsmaate ved fremstilling av partikkelforsterket metallskum og resulterende produkt |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0483184A1 true EP0483184A1 (de) | 1992-05-06 |
EP0483184B1 EP0483184B1 (de) | 1994-01-26 |
Family
ID=19892250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90910522A Expired - Lifetime EP0483184B1 (de) | 1989-07-17 | 1990-07-11 | Verfahren zur herstellung eines dispersionsverfestigten metallschaumes sowie verfahren zu seiner herstellung |
Country Status (13)
Country | Link |
---|---|
EP (1) | EP0483184B1 (de) |
JP (1) | JP2635817B2 (de) |
KR (1) | KR100186782B1 (de) |
AT (1) | ATE100867T1 (de) |
BR (1) | BR9007549A (de) |
CA (1) | CA2064099A1 (de) |
DE (2) | DE69006359T2 (de) |
DK (1) | DK0483184T3 (de) |
ES (1) | ES2049037T3 (de) |
HU (1) | HU210524B (de) |
NO (1) | NO172697C (de) |
RU (1) | RU2046151C1 (de) |
WO (1) | WO1991001387A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1266973A2 (de) * | 2001-06-15 | 2002-12-18 | Hütte Klein-Reichenbach Gesellschaft m.b.H. | Verfahren zur Herstellung eines leichtgewichtigen Formkörpers und Formkörper aus Metallschaum |
US7175689B2 (en) | 2001-06-15 | 2007-02-13 | Huette Klein-Reichenbach Gesellschaft Mbh | Process for producing a lightweight molded part and molded part made of metal foam |
CN110052594A (zh) * | 2019-04-25 | 2019-07-26 | 清华大学 | 泡沫金属制备方法及泡沫金属制备装置 |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5112697A (en) * | 1989-09-06 | 1992-05-12 | Alcan International Limited | Stabilized metal foam body |
JP3045773B2 (ja) * | 1991-05-31 | 2000-05-29 | アルキャン・インターナショナル・リミテッド | 粒子安定化発泡金属の成型スラブの製造方法と装置 |
DE4233695C2 (de) * | 1992-10-07 | 1996-07-11 | Wicona Bausysteme Gmbh | Verbundplatte für Wandbekleidungen |
CA2087791A1 (en) * | 1993-01-21 | 1994-07-22 | Martin Thomas | Production of particle-stabilized metal foams |
DE4318540A1 (de) * | 1993-06-04 | 1994-12-08 | Bayerische Motoren Werke Ag | Verfahren und Vorrichtung zur Herstellung eines Verbundbauteils |
DE19501659C1 (de) * | 1995-01-20 | 1996-05-15 | Daimler Benz Ag | Verfahren zur Herstellung eines Metallschaumteils |
NO953858D0 (no) * | 1995-09-29 | 1995-09-29 | Norsk Hydro As | Laminat |
ES2167938T3 (es) * | 1997-08-30 | 2002-05-16 | Honsel Gmbh & Co Kg | Aleacion para la fabricacion de cuerpos de espuma metalica por el empleo de un polvo con aditivos formadores de germenes. |
NO981119L (no) | 1998-01-14 | 1999-07-15 | Norsk Hydro As | Bilkarosseri |
DE19813176C2 (de) * | 1998-03-25 | 2000-08-24 | Fraunhofer Ges Forschung | Verfahren zur Herstellung von Verbundwerkstoffbauteilen |
WO2000073694A1 (de) | 1999-05-26 | 2000-12-07 | Thermotite As | Stahlrohr mit wärmeisolierung für tiefseerohrleitungen und verfahren zu seiner herstellung |
RU2193948C2 (ru) * | 1999-07-06 | 2002-12-10 | Лебедев Виктор Иванович | Способ получения пористого металла и изделий из него |
DE19948830B4 (de) * | 1999-10-06 | 2005-11-24 | Terex-Demag Gmbh & Co. Kg | Teleskopausleger für Krane |
US6343640B1 (en) * | 2000-01-04 | 2002-02-05 | The University Of Alabama | Production of metal/refractory composites by bubbling gas through a melt |
NO311708B1 (no) | 2000-02-25 | 2002-01-14 | Cymat Corp | Fremgangsmåte og utstyr for tildannelse av stöpte produkter |
US6464933B1 (en) | 2000-06-29 | 2002-10-15 | Ford Global Technologies, Inc. | Forming metal foam structures |
US6660224B2 (en) | 2001-08-16 | 2003-12-09 | National Research Council Of Canada | Method of making open cell material |
MXPA04001490A (es) | 2001-08-17 | 2004-12-06 | Cymat Corp | Metodo y aparato para colar espuma de aluminio a baja presion. |
US7108828B2 (en) | 2001-08-27 | 2006-09-19 | National Research Council Of Canada | Method of making open cell material |
WO2003074163A1 (en) | 2002-03-04 | 2003-09-12 | Cymat Corp. | Sealed impeller for producing metal foam and system and method therefor |
US20040126583A1 (en) * | 2002-11-19 | 2004-07-01 | Takashi Nakamura | Foaming agent for manufacturing a foamed or porous metal |
DE102005037069B4 (de) * | 2005-08-05 | 2010-03-18 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Poröse Verbundwerkstoffe auf Basis eines Metalls und Verfahren zu deren Herstellung |
JP4189401B2 (ja) * | 2005-10-05 | 2008-12-03 | 本田技研工業株式会社 | 発泡アルミニウムの製造方法 |
DE102008000100B4 (de) | 2008-01-18 | 2013-10-17 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Herstellung eines leichtgewichtigen Grünkörpers, danach hergestellter leichtgewichtiger Grünkörper und Verfahren zur Herstellung eines leichtgewichtigen Formkörpers |
CN111434788B (zh) * | 2019-01-15 | 2021-10-19 | 杨怡虹 | 一种复合型泡沫铝材的生产制备方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1259163A (fr) * | 1960-05-24 | 1961-04-21 | Lor Corp | Moussage de l'aluminium granulé |
US3297431A (en) * | 1965-06-02 | 1967-01-10 | Standard Oil Co | Cellarized metal and method of producing same |
US3816952A (en) * | 1969-02-19 | 1974-06-18 | Ethyl Corp | Preparation of metal foams with viscosity increasing gases |
FR2282479A1 (fr) * | 1974-08-19 | 1976-03-19 | Pechiney Aluminium | Pieces en alliage d'aluminium poreux et moyen de les preparer |
-
1989
- 1989-07-17 NO NO892925A patent/NO172697C/no unknown
-
1990
- 1990-07-11 HU HU9200169A patent/HU210524B/hu not_active IP Right Cessation
- 1990-07-11 RU SU905011037A patent/RU2046151C1/ru not_active IP Right Cessation
- 1990-07-11 DE DE90910522T patent/DE69006359T2/de not_active Ceased
- 1990-07-11 CA CA002064099A patent/CA2064099A1/en not_active Abandoned
- 1990-07-11 DK DK90910522.3T patent/DK0483184T3/da active
- 1990-07-11 WO PCT/NO1990/000115 patent/WO1991001387A1/en active IP Right Grant
- 1990-07-11 DE DE199090910522T patent/DE483184T1/de active Pending
- 1990-07-11 BR BR909007549A patent/BR9007549A/pt not_active IP Right Cessation
- 1990-07-11 ES ES90910522T patent/ES2049037T3/es not_active Expired - Lifetime
- 1990-07-11 JP JP2510702A patent/JP2635817B2/ja not_active Expired - Fee Related
- 1990-07-11 EP EP90910522A patent/EP0483184B1/de not_active Expired - Lifetime
- 1990-07-11 AT AT90910522T patent/ATE100867T1/de not_active IP Right Cessation
- 1990-07-11 KR KR1019920700095A patent/KR100186782B1/ko not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9101387A1 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1266973A2 (de) * | 2001-06-15 | 2002-12-18 | Hütte Klein-Reichenbach Gesellschaft m.b.H. | Verfahren zur Herstellung eines leichtgewichtigen Formkörpers und Formkörper aus Metallschaum |
EP1266973A3 (de) * | 2001-06-15 | 2004-08-18 | Hütte Klein-Reichenbach Gesellschaft m.b.H. | Verfahren zur Herstellung eines leichtgewichtigen Formkörpers und Formkörper aus Metallschaum |
US7175689B2 (en) | 2001-06-15 | 2007-02-13 | Huette Klein-Reichenbach Gesellschaft Mbh | Process for producing a lightweight molded part and molded part made of metal foam |
US7195662B2 (en) | 2001-06-15 | 2007-03-27 | Huette Klein-Reichenbach Gesellschaft Mbh | Device and process for producing metal foam |
CN110052594A (zh) * | 2019-04-25 | 2019-07-26 | 清华大学 | 泡沫金属制备方法及泡沫金属制备装置 |
CN110052594B (zh) * | 2019-04-25 | 2024-01-02 | 清华大学 | 泡沫金属制备方法及泡沫金属制备装置 |
Also Published As
Publication number | Publication date |
---|---|
JPH04506835A (ja) | 1992-11-26 |
EP0483184B1 (de) | 1994-01-26 |
WO1991001387A1 (en) | 1991-02-07 |
ATE100867T1 (de) | 1994-02-15 |
JP2635817B2 (ja) | 1997-07-30 |
KR920703862A (ko) | 1992-12-18 |
NO892925L (no) | 1991-01-18 |
HU9200169D0 (en) | 1992-06-29 |
KR100186782B1 (ko) | 1999-05-01 |
ES2049037T3 (es) | 1994-04-01 |
DK0483184T3 (da) | 1994-05-30 |
CA2064099A1 (en) | 1991-01-18 |
BR9007549A (pt) | 1992-06-30 |
DE483184T1 (de) | 1992-08-13 |
NO892925D0 (no) | 1989-07-17 |
DE69006359T2 (de) | 1994-05-11 |
RU2046151C1 (ru) | 1995-10-20 |
HU210524B (en) | 1995-04-28 |
DE69006359D1 (de) | 1994-03-10 |
NO172697C (no) | 1993-08-25 |
NO172697B (no) | 1993-05-18 |
HUT60791A (en) | 1992-10-28 |
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