EP0262869A1 - Verbundpulver aus Aluminium-Legierung - Google Patents

Verbundpulver aus Aluminium-Legierung Download PDF

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Publication number
EP0262869A1
EP0262869A1 EP87308466A EP87308466A EP0262869A1 EP 0262869 A1 EP0262869 A1 EP 0262869A1 EP 87308466 A EP87308466 A EP 87308466A EP 87308466 A EP87308466 A EP 87308466A EP 0262869 A1 EP0262869 A1 EP 0262869A1
Authority
EP
European Patent Office
Prior art keywords
particles
metal
particulate composite
refractory material
stream
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.)
Withdrawn
Application number
EP87308466A
Other languages
English (en)
French (fr)
Inventor
Richard Michael Jordan
Ian Robert Hughes
Treve Courtney Willis
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.)
Rio Tinto Alcan International Ltd
Original Assignee
Alcan International Ltd Canada
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 Alcan International Ltd Canada filed Critical Alcan International Ltd Canada
Publication of EP0262869A1 publication Critical patent/EP0262869A1/de
Withdrawn legal-status Critical Current

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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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • 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
    • 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
    • C22C32/001—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 only oxides
    • C22C32/0015—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 only oxides with only single oxides as main non-metallic constituents
    • C22C32/0036—Matrix based on Al, Mg, Be or alloys thereof
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • B22F2009/088—Fluid nozzles, e.g. angle, distance

Definitions

  • This invention relates to particulate composites in which the particles have a continuous phase of a metal eg an Al alloy.
  • EPA 105595 describes Al alloys containing substantial proportions of Cr, Zr and Mn. Rapid cooling of the molten alloy e.g. by spraying or splatcasting, results in a particulate solid in which the bulk of the alloying additions are retained in solid solution.
  • This material can be consolidated by powder metallurgy techniques to a product which can be age-hardened at a temperature of 300° to 500° and which retains its strength for long periods at temperatures of 150°C to 450°C.
  • EPA 128260 describes a technique employing metal vapour to make composite particles below 10 microns.
  • GB 2115014 describes a method of making a massive (i.e. not particulate) product by combining molten metal droplets with fine refractory material.
  • DE 2124199 describes an atomisation method of making metal powders whose particle surfaces are coated with fine refractory material.
  • EPA 147769 describes a method of making particulate composites of Al alloys with fine refractory material, by mechanical alloying.
  • GB 1548616 is one of a family of patents relating to the manufacture of spray deposited preforms from which articles of precise shape can be produced e.g. by forging, pressing or machining.
  • a stream of molten metal alloy is atomised by means of high velocity jets of gas and the resultant spray of hot metal particles is directed onto a shaped collecting surface to form a coherent deposit.
  • the patent describes how a proportion of the particles may miss the target and collect as a powder or aggregate of overspray material which is not convenient for re-cycling and, it is implied, not useful for other purposes.
  • EPA 198607 describes a method of making a metal matrix composite comprising the steps of atomising a stream of molten metal to form a spray of hot metal particles by subjecting the stream to relatively cold gas directed at the stream, applying to the stream or spray fine solid particles of a material of different composition from the metal, and depositing the metal, having said fine particles incorporated therein, in coherent form on a collecting surface.
  • the fine particulate material enhances physical and mechanical properties of the metal matrix.
  • the metal may be Al and the particulate material may be SiC.
  • the present invention is based on the following observation regarding the overspray.
  • the refractory material When a finely divided refractory material has been applied to the stream or spray of molten metal, the refractory material is found, not only in the coherent deposit formed on the collecting surface, but also associated with the metal in the overspray.
  • the refractory material is present in the overspray, not only on the surface of the solidified particles of metal, but also rather uniformly distributed within the interior of the particles. This observation was unexpected. It had not previously been realized that the refractory material became associated with the molten metal spray prior to deposition on a collecting surface. Indeed, the prior art noted above indicates that such association would not take place.
  • the present invention provides a particulate composite, made by combining molten metal droplets with fine refractory material, in which the particles have a continuous phase of the metal and a disperse phase, incorporated in the continuous phase, of the refractory material.
  • the invention is of particular interest when the metal is an Al alloy, as the technique of atomising molten Al alloys is quite well developed. But the invention is appl icable to other materials that can be sprayed in the form of molten droplets, such as for example, steel, nickel, cobalt, copper, titanium and magnesium.
  • the particulate composite has been made by combining molten metal droplets with fine refractory material. Even when spray casting is carried out in an inert atmosphere, so far as Al allows are concerned, the resulting particles necessarily have at least a thin oxide coating on their surface. The particles do not normally contain any internal oxide inclusions unless this is deliberately added in (or as) the fine refractory material. By contrast, a particulate composite of an Al alloy made by mechanical alloying would necessarily contain internal oxide inclusions.
  • the particles of the composite generally have a size in the range from 10 to 500 microns, preferably with an average diameter of from 20 to 80 microns.
  • their diameter can be controlled by controlling the atomising conditions, as is known in the art.
  • the composite particles are preferably spherical.
  • the refractory material may be another metal of high melting point than the metal, but is preferably an oxide, boride, carbide or nitride. Ceramic materials of this kind, some of which are known as refractory hard metals, are well known, and preferred examples include SiC, A1 O , MgO, TiC and boron carbide. These refractory materials are preferably used in the form of particles having average diameters, below 50 microns and down to sub-micron size. Particles of 5 to 20 microns are often convenient to use.
  • the disperse phase and the continuous phase are preferably present in volume concentrations of 0.5 to 50% and 99.5 to 50% respectively. Particularly when used in a volume concentration of 10 to 30%, high strength high modulus refractory powders can impart substantial strengthening and modulus properties to the composite.
  • the matrix metal may be an Al alloy containing on or more conventional age- and solution-hardening ingredients such as Zn, Mg, An, Si, Li, and optionally also one or more transition metal elements for grain refining purposes.
  • the Al alloy may contain at least one transition metal alloying ingredient having age-hardening, or solution strengthening properties, such as for example Cr, Zr, Mn, Fe, Co and Ce.
  • transition metal alloying ingredient having age-hardening, or solution strengthening properties, such as for example Cr, Zr, Mn, Fe, Co and Ce.
  • Cr, Zr, Mn, Fe, Co and Ce Preferred are alloys containing 0.5% to 7% by weight Cr, 0.5% to 2.5% by weight Zr and 0.1% to 4.0% by weight Mn.
  • These alloying ingredients are difficult to get into solid solution in Al by conventional means, but this problem is solved by the spray-casting technique described below.
  • These transition metal alloying elements have the advantage of providing age-hardening properties at elevated temperatures typically in the range 300°C-500°C.
  • the transition metal alloying ingredients are preferably present at least partly, and preferably totally, in solid (supersaturated) solution in the metal.
  • the alloying ingredients should be present as a fine dispersion. To achieve this, it is necessary to cool the molten metal rapidly at about 10°C sec for a fine dispersion, and at about 10°C sec for solid solution. Depending on particle size, these are cooling rates which can be achieved by spray-casting.
  • the invention provides a method of making the particulate composite herein described, which method comprises atomising a stream of the molten metal to form a spray metal particles by subjecting the stream to relatively cold inert gas directed at the stream, applying to the stream or spray fine solid particles of a refractory material, allowing the metal particles to solidify, and collecting the resulting particulate composite.
  • the solid particles of refractory material are applied to the stream of molten metal just before this is broken up into spray.
  • the inert gas may conveniently be argon or preferably nitrogen.
  • the composite particles come out spherical with no more than a thin coating of aluminium oxide.
  • the spray of molten metal particles may be directed at a collecting surface, in which case a particulate composite is recovered as a by-product.
  • the spray conditions may be chosen such that the metal particles solidify before impact with any solid surface.
  • Al alloy is not critical to the invention.
  • the method has been employed to make particulate composites using SiC as the refractory material with the following: commercially pure aluminium, AA 2014, 2024, 2618, 6061, 7075, 7475, 8090, LM 13, A 3210, Al-12% Si, Al-20% Si and Al-6% Sn.
  • the particulate composite is amenable to further processing via known powder metallurgy routes such as canning, degassing, compacting and extruding to solid eg semi-fabricated or fully fabricated products.
  • powder metallurgy routes such as canning, degassing, compacting and extruding to solid eg semi-fabricated or fully fabricated products.
  • Possible applications include extruding directly to form air-frame structures; extruding bar and forging to give gas-turbine compressor blades or pistons for internal combustion engines; or extruding plate and rolling to sheet for the skins of aircraft.
  • FIG. 1 is a diagram of an atomisation system suitable for making particulate composites of the invention.
  • the system comprises a molten metal nozzle 10 from which is passing by gravity a stream 12 of molten metal.
  • a primary gas nozzle 14 Surrounding the molten metal nozzle is a primary gas nozzle 14, with apertures to direct a primary support gas flow 15, parallel to and surrounding the metal stream, to shroud and contain the molten metal.
  • Surrounding the primary gas nozzle is a secondary gas nozzle 18 provided with jets 19 which direct a secondary atomising gas stream 20 towards the molten metal stream.
  • the secondary gas stream contacts the molten metal stream a distance h downstream of the molten metal nozzle and atomises it into a spray 22 of metal particles.
  • the secondary atomising gas flow 20 defines a cone of height h and radius equal to the distance of the jets 19 from the metal stream 12.
  • the refractory material 24, entrained in a carrier gas, is introduced into this cone via a pipe 26.
  • the carrier gas flow rate is typically several orders of magnitude less than the flow rate of the secondary atomising gas 20.
  • the position at which the carrier material is introduced within the cone is not critical; it could for example be inside, rather than outside, the primary gas nozzle 14. If the distance h is sufficiently small, it is possible to dispense with the primary gas nozzle altogether.
  • the refractory material loading in the carrier gas, and the carrier gas flow rate relative to the metal flow rate and the secondary (atomising) gas flow rate determine the concentrations of refractory material in the particulate composite produced.
  • the temperature and flow rate of the atomising gas determine the rate at which the atomised metal particles solidify.
  • the SiC and Al-SiC composite powders can be separated either by sieving or by gas separation/classification techniques.
  • An optical section through the composite particles shows comminuted SiC uniformly distributed through the metal matrix.
  • the amount of SiC (or other refractory material) incorporated is dependent on the composition of the Al alloy used and on the atomising conditions.
  • the following table reports the % SiC incorporated in a series of experimental runs performed under the same general conditions as Example 1. The % SiC was determined by sieving the particulate composite to -150 to +38 microns (thereby excluding SiC particles not associated with Al metal), followed by chemical dissolution of the matrix and weighing.
  • the as produced powder was sieved to ⁇ 150 ⁇ m and then air classified to >45 ⁇ m producing a composite powder in the size range 45-150 ⁇ m.
  • the powder was placed in a can (170 mm diameter by 647 mm length) made of 6082 alloy and degassed at 325 C for 4 hours under vacuum. The can and powder were then hot compacted at 350°C in a commercial press. After cooling the can was machined away.
  • the hot compacted billet was extruded using an indirect press to a rectangular section 63 mm x 14 mm corresponding to an extrusion ratio of 26:1.
  • the as-extruded bar was solution heat treated for 1 hr at 505°C, water quenched, and artificially aged for 8 hr at 175°C.
  • Tensile test data was obtained using round bar tensiles machined parallel to the extrusion direction.
  • the as-produced powder was sieved to ⁇ 150 m and then air classified to >25 m producing a composite powder in the size range 25-150 m.
  • the powder was placed in a can (74 mm diameter by 200 mm length) made of 2024 alloy. Two degassing conditions were used; 4 hrs at 325°C and 1 hr at 530°C under vacuum. The cans were sealed and then put into a furnace at 300°C for 30 min and then extruded.
  • the extruded cross section was 19 mm round bar corresponding to an extrusion ratio of 15:1.
  • the as-extruded bar was solution heat treated for 1 hr at 505°C, water quenched, and artificially aged for 8 hr at 175°C.
  • Tensile test data was obtained using round bar tensiles machined parallel to the extrusion direction.
  • test results are reported in the following table, together with comparative data on the un-reinforced 2014 alloy.
  • the composites of the invention show higher modulus with no loss of tensile strength.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
EP87308466A 1986-09-24 1987-09-24 Verbundpulver aus Aluminium-Legierung Withdrawn EP0262869A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB868622949A GB8622949D0 (en) 1986-09-24 1986-09-24 Alloy composites
GB8622949 1986-09-24

Publications (1)

Publication Number Publication Date
EP0262869A1 true EP0262869A1 (de) 1988-04-06

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ID=10604699

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87308466A Withdrawn EP0262869A1 (de) 1986-09-24 1987-09-24 Verbundpulver aus Aluminium-Legierung

Country Status (8)

Country Link
EP (1) EP0262869A1 (de)
JP (1) JPS63140001A (de)
KR (1) KR880003688A (de)
CN (1) CN1012803B (de)
AU (1) AU600030B2 (de)
BR (1) BR8704882A (de)
GB (1) GB8622949D0 (de)
ZA (1) ZA877089B (de)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH675699A5 (en) * 1988-06-21 1990-10-31 Alusuisse Lonza Holding A G Prodn. of boron contg. aluminium alloy - by spraying melt predetermined with current of support gas carrying boron particles substrate surface
EP0411577A1 (de) * 1989-07-31 1991-02-06 Sumitomo Electric Industries, Ltd. Verfahren zur Herstellung einer Silicium enthaltenden Aluminiumlegierung
EP0433264A3 (en) * 1989-11-16 1991-08-28 Boehler Gesellschaft M.B.H. Method for the production of preformed material for workpieces comprising a large proportion of metal compounds
EP0451093A1 (de) * 1990-04-04 1991-10-09 Alusuisse-Lonza Services Ag Hochschmelzende, metallische Verbindung
GB2248629A (en) * 1990-09-20 1992-04-15 Daido Metal Co Sliding material
EP0529520A1 (de) * 1991-08-22 1993-03-03 Sumitomo Electric Industries, Limited Verfahren zur Herstellung von Verbundlegierungspulver mit Aluminiummatrix
EP0529993A1 (de) * 1991-08-22 1993-03-03 Toyo Aluminium Kabushiki Kaisha Herstellung von Verbundpulver mit Aluminiummatrix
EP0520442A3 (en) * 1991-06-27 1993-08-04 Centro Sviluppo Materiali S.P.A. Device for atomizing liquid metals for powder production
US5372772A (en) * 1986-12-01 1994-12-13 Convault, Inc. Method for entombment of container in concrete
EP0640759A1 (de) * 1993-08-26 1995-03-01 PEAK WERKSTOFF GmbH Partiell verstärktes Al-GussBauteil und Verfahren zu dessen Herstellung
US5749938A (en) * 1993-02-06 1998-05-12 Fhe Technology Limited Production of powder
WO2002004154A1 (de) * 2000-07-07 2002-01-17 Tribovent Verfahrensentwicklung Gmbh Verfahren und vorrichtung zum zerstäuben von metallschmelzen
EP1433867A3 (de) * 2002-12-27 2006-05-17 Wieland-Werke AG Verbundmaterial zur Herstellung elekrischer Kontakte und Verfahren zu dessen Herstellung
CN105665726A (zh) * 2016-01-23 2016-06-15 山东理工大学 自由降落双喷嘴混粉气雾化水冷快凝金属基金刚石磁性磨料制备方法
CN105665720A (zh) * 2016-01-23 2016-06-15 山东理工大学 自由降落式混粉气雾化磁性磨料制备双级雾化装置
CN105665727A (zh) * 2016-01-23 2016-06-15 山东理工大学 自由降落双级混粉气雾化水冷快凝磁性磨料制备方法
CN105665725B (zh) * 2016-01-23 2018-08-31 山东理工大学 自由降落双喷嘴混粉气雾化水冷快凝金属基cbn磁性磨料制备方法
CN105665723B (zh) * 2016-01-23 2018-08-31 山东理工大学 自由降落双喷嘴混粉气雾化水冷快凝金属基碳化硅磁性磨料制备方法
CN105665722B (zh) * 2016-01-23 2018-08-31 山东理工大学 自由降落双喷嘴混粉气雾化水冷快凝金属基氧化铝磁性磨料制备方法

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4828008A (en) * 1987-05-13 1989-05-09 Lanxide Technology Company, Lp Metal matrix composites
GB8713449D0 (en) * 1987-06-09 1987-07-15 Alcan Int Ltd Aluminium alloy composites
CN101707154B (zh) * 2009-09-24 2011-10-05 温州宏丰电工合金股份有限公司 银基电接触材料的制备方法
US9267190B2 (en) * 2009-12-15 2016-02-23 Korea Institute Of Machinery And Materials Production method and production device for a composite metal powder using the gas spraying method
CN102000828B (zh) * 2010-09-26 2013-01-16 王昌祺 金属超微雾化粉碎分级系统及其金属雾化装置
JP2017218633A (ja) * 2016-06-08 2017-12-14 積水化学工業株式会社 複合粒子の製造方法
CN110181069B (zh) * 2019-07-08 2023-01-31 华北理工大学 采用气雾化法制备高氮钢粉末的方法
CN111468737A (zh) * 2020-03-07 2020-07-31 福达合金材料股份有限公司 一种粉体制备与混粉一体化装置及其应用
CN112846203A (zh) * 2020-12-29 2021-05-28 有研粉末新材料(合肥)有限公司 一种铁基复合粉末的水雾化制备方法

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DE2124199B1 (de) * 1971-05-13 1972-03-16 Mannesmann Ag Verfahren und Vorrichtung Herstellen von Metallpulver
GB2115014A (en) * 1982-02-23 1983-09-01 Nat Res Dev Method of making a two-phase or multi-phase metallic material
EP0128360A1 (de) * 1983-05-10 1984-12-19 Toyota Jidosha Kabushiki Kaisha Feines Verbundpulvermaterial und Verfahren und Vorrichtung zu seiner Herstellung
GB2146662A (en) * 1983-09-15 1985-04-24 Teledyne Ind Casting and coating with metallic particles
EP0147769A2 (de) * 1983-12-19 1985-07-10 Sumitomo Electric Industries Limited Dispersionsverstärkte Aluminiumlegierung mit guter Abnutzungs- und Hitzebeständigkeit und Verfahren zu ihrer Herstellung
DE3428022A1 (de) * 1984-07-30 1986-01-30 Hermann C. Starck Berlin, 1000 Berlin Verfahren zur herstellung von verbundpulver durch zerstaeuben einer metallschmelze
EP0225080A1 (de) * 1985-11-12 1987-06-10 Osprey Metals Limited Zerteilen von flüssigen Metallen

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JPS6267105A (ja) * 1985-09-20 1987-03-26 Manabu Kiuchi 強化材混合マトリツクス粉末の製造方法
JPS62109905A (ja) * 1985-11-07 1987-05-21 Mitsubishi Metal Corp 複合金属粉末の製造法
JPS62136361A (ja) * 1985-12-07 1987-06-19 Riken Corp 磁性粉末

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2124199B1 (de) * 1971-05-13 1972-03-16 Mannesmann Ag Verfahren und Vorrichtung Herstellen von Metallpulver
GB2115014A (en) * 1982-02-23 1983-09-01 Nat Res Dev Method of making a two-phase or multi-phase metallic material
EP0128360A1 (de) * 1983-05-10 1984-12-19 Toyota Jidosha Kabushiki Kaisha Feines Verbundpulvermaterial und Verfahren und Vorrichtung zu seiner Herstellung
GB2146662A (en) * 1983-09-15 1985-04-24 Teledyne Ind Casting and coating with metallic particles
EP0147769A2 (de) * 1983-12-19 1985-07-10 Sumitomo Electric Industries Limited Dispersionsverstärkte Aluminiumlegierung mit guter Abnutzungs- und Hitzebeständigkeit und Verfahren zu ihrer Herstellung
DE3428022A1 (de) * 1984-07-30 1986-01-30 Hermann C. Starck Berlin, 1000 Berlin Verfahren zur herstellung von verbundpulver durch zerstaeuben einer metallschmelze
EP0225080A1 (de) * 1985-11-12 1987-06-10 Osprey Metals Limited Zerteilen von flüssigen Metallen

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5372772A (en) * 1986-12-01 1994-12-13 Convault, Inc. Method for entombment of container in concrete
CH675699A5 (en) * 1988-06-21 1990-10-31 Alusuisse Lonza Holding A G Prodn. of boron contg. aluminium alloy - by spraying melt predetermined with current of support gas carrying boron particles substrate surface
EP0411577A1 (de) * 1989-07-31 1991-02-06 Sumitomo Electric Industries, Ltd. Verfahren zur Herstellung einer Silicium enthaltenden Aluminiumlegierung
EP0433264A3 (en) * 1989-11-16 1991-08-28 Boehler Gesellschaft M.B.H. Method for the production of preformed material for workpieces comprising a large proportion of metal compounds
EP0451093A1 (de) * 1990-04-04 1991-10-09 Alusuisse-Lonza Services Ag Hochschmelzende, metallische Verbindung
GB2248629A (en) * 1990-09-20 1992-04-15 Daido Metal Co Sliding material
US5128213A (en) * 1990-09-20 1992-07-07 Daido Metal Company Limited Sliding material of single substance and composite sliding material
GB2248629B (en) * 1990-09-20 1995-03-29 Daido Metal Co Sliding material
EP0520442A3 (en) * 1991-06-27 1993-08-04 Centro Sviluppo Materiali S.P.A. Device for atomizing liquid metals for powder production
US5435825A (en) * 1991-08-22 1995-07-25 Toyo Aluminum Kabushiki Kaisha Aluminum matrix composite powder
EP0529993A1 (de) * 1991-08-22 1993-03-03 Toyo Aluminium Kabushiki Kaisha Herstellung von Verbundpulver mit Aluminiummatrix
EP0529520A1 (de) * 1991-08-22 1993-03-03 Sumitomo Electric Industries, Limited Verfahren zur Herstellung von Verbundlegierungspulver mit Aluminiummatrix
US5749938A (en) * 1993-02-06 1998-05-12 Fhe Technology Limited Production of powder
EP0640759A1 (de) * 1993-08-26 1995-03-01 PEAK WERKSTOFF GmbH Partiell verstärktes Al-GussBauteil und Verfahren zu dessen Herstellung
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CN105665726A (zh) * 2016-01-23 2016-06-15 山东理工大学 自由降落双喷嘴混粉气雾化水冷快凝金属基金刚石磁性磨料制备方法
CN105665720A (zh) * 2016-01-23 2016-06-15 山东理工大学 自由降落式混粉气雾化磁性磨料制备双级雾化装置
CN105665727A (zh) * 2016-01-23 2016-06-15 山东理工大学 自由降落双级混粉气雾化水冷快凝磁性磨料制备方法
CN105665725B (zh) * 2016-01-23 2018-08-31 山东理工大学 自由降落双喷嘴混粉气雾化水冷快凝金属基cbn磁性磨料制备方法
CN105665723B (zh) * 2016-01-23 2018-08-31 山东理工大学 自由降落双喷嘴混粉气雾化水冷快凝金属基碳化硅磁性磨料制备方法
CN105665726B (zh) * 2016-01-23 2018-08-31 山东理工大学 自由降落双喷嘴混粉气雾化水冷快凝金属基金刚石磁性磨料制备方法
CN105665722B (zh) * 2016-01-23 2018-08-31 山东理工大学 自由降落双喷嘴混粉气雾化水冷快凝金属基氧化铝磁性磨料制备方法
CN105665727B (zh) * 2016-01-23 2019-01-11 山东理工大学 自由降落双级混粉气雾化水冷快凝磁性磨料制备方法
CN105665720B (zh) * 2016-01-23 2019-06-28 山东理工大学 自由降落式混粉气雾化磁性磨料制备双级雾化装置

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AU7886887A (en) 1988-03-31
JPS63140001A (ja) 1988-06-11
ZA877089B (en) 1988-05-25
AU600030B2 (en) 1990-08-02
CN87106831A (zh) 1988-04-13
KR880003688A (ko) 1988-05-28
BR8704882A (pt) 1988-05-17
GB8622949D0 (en) 1986-10-29

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