Base Metal One Or More Of Beryllium(be), Magnesium(mg), Or Aluminum(al) Patents (Class 75/249)
  • Patent number: 10543531
    Abstract: A porous aluminum sintered material is provided. The porous aluminum sintered material includes aluminum substrates sintered each other, wherein pillar-shaped protrusions projecting toward an outside are formed on outer surfaces of the aluminum substrates, the porous aluminum sintered material has junctions in which the aluminum substrates are bonded each other through the pillar-shaped protrusions, the junctions include a Ti—Al compound, and a eutectic alloy phase including Al and Si is provided on surface layers of the junctions.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: January 28, 2020
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Toshihiko Saiwai, Ji-bin Yang, Koichi Kita
  • Patent number: 9061353
    Abstract: The present invention relates to a method of manufacturing a high purity copper (Cu) powder material useable in fabricating a sputtering target material for electronic industrial applications, for example a penetrator liner. The foregoing method has a configuration of using an apparatus composed of a raw material feeder, a plasma torch and a reactor to prepare a metal powder, and includes steps of passing a Cu powder having an average particle diameter of 30 to 450 ?m through the thermal plasma torch at an introduction rate of 2 to 30 kg/hr, to thereby fabricate a Cu powder having an average particle diameter of 5 to 300 ?m.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: June 23, 2015
    Assignee: POONGSAN CORPORATION
    Inventors: Dae Hyun Kim, Dong Woo Lee, In Dal Kim, Sang Young Choi, Ji Hoon Lee, Bo Min Jeon
  • Publication number: 20150135897
    Abstract: The disclosure relates to the manufacture of metal articles, more specifically the manufacture of metal articles by additive manufacturing techniques, and in particular to the manufacture of metal articles by an additive manufacturing technique that may involve the selective melting or sintering of a metal powder. Examples of such techniques may include selective laser melting (SLM), selective laser sintering (SLS) and techniques that use an electron beam rather than a laser. Exemplary embodiments include a method of manufacture of an article including selective melting and/or sintering of a powder including an alloy containing aluminium, wherein the alloy contains bismuth.
    Type: Application
    Filed: May 28, 2013
    Publication date: May 21, 2015
    Inventors: Christopher John Sutcliffe, Peter Fox
  • Publication number: 20150104669
    Abstract: A high-strength magnesium alloy member is suitable for products in which at least one of bending stress and twisting stress primarily acts. The member has required elongation and 0.2% proof stress, whereby strength and formability are superior, and has higher strength and large compressive residual stress in the vicinity of the surface of a wire rod. In the magnesium alloy member formed as a wire rod in which at least one of bending stress and twisting stress primarily acts, the wire rod includes a surface portion having the highest hardness of 170 HV or more in the vicinity of the surface and an inner portion having a 0.2% proof stress of 550 MPa or more and an elongation of 5% or more, and the wire rod has the highest compressive residue stress in the vicinity of the surface of 50 MPa or more.
    Type: Application
    Filed: March 29, 2013
    Publication date: April 16, 2015
    Applicant: NHK SPRIG CO., LTD.
    Inventors: Yuji Araoka, Tohru Shiraishi, Yoshiki Ono
  • Patent number: 8961647
    Abstract: The invention is a process for manufacturing a nano aluminum/alumina metal matrix composite and composition produced therefrom. The process is characterized by providing an aluminum powder having a natural oxide formation layer and an aluminum oxide content between about 0.1 and about 4.5 wt. % and a specific surface area of from about 0.3 and about 5 m2/g, hot working the aluminum powder, and forming a superfine grained matrix aluminum alloy. Simultaneously there is formed in situ a substantially uniform distribution of nano particles of alumina. The alloy has a substantially linear property/temperature profile, such that physical properties such as strength are substantially maintained even at temperatures of 250° C. and above.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: February 24, 2015
    Inventors: Thomas G. Haynes, III, Martin Walcher, Martin Balog
  • Patent number: 8920533
    Abstract: A powder metal mixture is disclosed that provides improved mechanical properties for parts made from powder metal, such as cam caps. The powder metal mixture, upon sintering, forms an S phase intermetallic in the Al—Cu—Mg alloy system. The S phase is present in a concentration that results in an enhanced response to cold work strengthening of the powder metal part. Further, by minor adjustments to certain alloy elements, such as tin, the tensile properties of the resultant part may be adjusted.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: December 30, 2014
    Assignee: GKN Sinter Metals, LLC
    Inventors: Donald Paul Bishop, Christopher D. Boland, Richard L. Hexemer, Jr., Ian W. Donaldson
  • Publication number: 20140277328
    Abstract: A composite material for a medical implant includes a matrix of magnesium or magnesium alloy, and a catalyst which is dispersed within the matrix. The catalyst has the capacity to reduce an amount of hydrogen gas released from the matrix when the matrix is being degraded inside the patient.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: ST. JUDE MEDICAL SYSTEMS AB
    Inventors: Andreas ÖRNBERG, Anna Norlin-Weissenrieder, Jonas Weissenrieder
  • Publication number: 20140238192
    Abstract: A magnesium-based alloy powder is made of a magnesium-based alloy that contains 0.2 mass % to 5 mass % of calcium, wherein the magnesium-based alloy powder has an average particle diameter of 100 ?m to 1,500 ?m, wherein the magnesium-based alloy powder has a particle average aspect ratio of 0.5 to 1, wherein the magnesium-based alloy powder has an apparent density of 0.2 g/cm3 to 1.2 g/cm3, and wherein the mean value of hardness variation index values obtained by dividing the difference of the maximum value and the minimum value of micro Vickers hardnesses taken at 10 measurement points in a particle cross section by the maximum value is 0.3 or less.
    Type: Application
    Filed: February 27, 2014
    Publication date: August 28, 2014
    Applicant: Seiko Epson Corporation
    Inventors: Isamu Otsuka, Hiroyoshi Otaka
  • Patent number: 8790438
    Abstract: A colored metal composite including a metal matrix; and colored particles distributed throughout the metal matrix AND/OR a method including providing metal powder as a first phase of a composite; providing colored particles to form a second phase of the composite; mixing the metal powder and colored particles; and sintering the metal powder around the colored particles to form a metal matrix that has colored particles distributed throughout.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: July 29, 2014
    Assignee: Nokia Corporation
    Inventors: Caroline Elizabeth Millar, Stuart Paul Godfrey
  • Patent number: 8778098
    Abstract: A method for producing high strength aluminum alloy powder containing L12 intermetallic dispersoids uses high pressure gas atomization to effect cooling rates in excess of 103° C./second.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: July 15, 2014
    Assignee: United Technologies Corporation
    Inventor: Awadh B. Pandey
  • Publication number: 20140010699
    Abstract: Embodiments of a magnesium (Mg) alloy and method for producing the same are disclosed. One such embodiment, among others, is a method for producing a magnesium (Mg) alloy, comprising the steps of: (a) producing a Mg powder aggregate by mixing Mg powder and at least one strengthening agent, the strengthening agent selected from: a carbon, a metal, and a combination thereof; (b) agglomerating the aggregate; and (c) sintering the agglomerated aggregate to produce the Mg alloy. Preferably, although not necessarily, steps (a) and (b) are performed using a ball mill. Moreover, the strengthening agent may be, for example but not limited to, carbon nanotubes, copper, tin, titanium, or silicon carbide. The resulting Mg alloy comprises nano-scale crystalline and/or micro-scale crystalline lattice structures and a yield strength that is at least as high as steel, exhibiting a yield strength that is about 320 MPa to 500 MPa.
    Type: Application
    Filed: June 21, 2013
    Publication date: January 9, 2014
    Inventors: Mark Horstemeyer, Paul Wang
  • Publication number: 20130333870
    Abstract: An aluminum alloy powder metal is disclosed. A sintered part made from the aluminum alloy powder has a thermal conductivity comparable to or exceeding parts made from wrought aluminum materials.
    Type: Application
    Filed: June 13, 2013
    Publication date: December 19, 2013
    Applicant: GKN Sinter Metals, LLC
    Inventors: Donald Paul Bishop, Richard L. Hexemer, JR., Ian W. Donaldson
  • Patent number: 8591803
    Abstract: The present invention relates to a process for producing components consisting of magnesium or magnesium alloy by sintering. This process makes it possible, for the first time, to produce components consisting of magnesium or magnesium alloy which provide outstanding elasticity together with a sufficient strength. Materials of this type can be used as biocompatible endosseous implant materials.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: November 26, 2013
    Assignee: Helmholtz-Zentrum Geesthacht Zentrum für Material- und Küstenforschung GmbH
    Inventors: Martin Wolff, Thomas Ebel, Norbert Hort
  • Patent number: 8551210
    Abstract: A composite article (1; 10; 40) comprises a plurality of inclusions (5) of a magnetocalorically active material embedded in a matrix (4) of a magnetocalorically passive material. The inclusions (5) and the matrix (4) have a microstructure characteristic of a compacted powder.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: October 8, 2013
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Georg Werner Reppel, Matthias Katter
  • Patent number: 8480783
    Abstract: A sintered porous metal body, which has a sintered structure having a volumetric porosity of 10 to 90%, wherein there are at least one powder particles selected from the group consisting of dielectric material powders and semiconductor material powders that absorb energy of electromagnetic wave having a frequency of 300 MHz to 300 GHz among the metal crystalline particles constituting the sintered body, wherein the particles are substantially homogeneously dispersed in the sintered body, and wherein the metal particles are sintered to bond each other to be united to constitute pores. The invention discloses a method of manufacturing the sintered porous metal body.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: July 9, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Kazutaka Okamoto, Masami Taguchi
  • Patent number: 8425651
    Abstract: A powder metal composite is disclosed. The powder metal composite includes a substantially-continuous, cellular nanomatrix comprising a nanomatrix material. The composite also includes a plurality of dispersed first particles each comprising a first particle core material that comprises Mg, Al, Zn or Mn, or a combination thereof, dispersed in the nanomatrix; a plurality of dispersed second particles intermixed with the dispersed first particles, each comprising a second particle core material that comprises a carbon nanoparticle; and a solid-state bond layer extending throughout the nanomatrix between the dispersed first and second particles. The nanomatrix powder metal composites are uniquely lightweight, high-strength materials that also provide uniquely selectable and controllable corrosion properties, including very rapid corrosion rates, useful for making a wide variety of degradable or disposable articles, including various downhole tools and components.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: April 23, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Zhiyue Xu, Soma Chakraborty, Gaurav Agrawal
  • Publication number: 20130047784
    Abstract: A powder metal compact is disclosed. The powder metal compact includes a cellular nanomatrix comprising a nanomatrix material. The powder metal compact also includes a plurality of dispersed particles comprising a particle core material that comprises an Al—Cu—Mg, Al—Mn, Al—Si, Al—Mg, Al—Mg—Si, Al—Zn, Al—Zn—Cu, Al—Zn—Mg, Al—Zn—Cr, Al—Zn—Zr, or Al—Sn—Li alloy, or a combination thereof, dispersed in the cellular nanomatrix.
    Type: Application
    Filed: August 30, 2011
    Publication date: February 28, 2013
    Inventor: Zhiyue Xu
  • Publication number: 20130047785
    Abstract: A powder metal compact is disclosed. The powder metal compact includes a cellular nanomatrix comprising a nanomatrix material. The powder metal compact also includes a plurality of dispersed particles comprising a particle core material that comprises an Mg—Zr, Mg—Zn—Zr, Mg—Al—Zn—Mn, Mg—Zn—Cu—Mn or Mg—W alloy, or a combination thereof, dispersed in the cellular nanomatrix.
    Type: Application
    Filed: August 30, 2011
    Publication date: February 28, 2013
    Inventor: Zhiyue Xu
  • Publication number: 20130025409
    Abstract: A powder metal compact is disclosed. The powder compact includes a substantially elongated cellular nanomatrix comprising a nanomatrix material. The powder compact also includes a plurality of substantially elongated dispersed particles comprising a particle core material that comprises Mg, Al, Zn or Mn, or a combination thereof, dispersed in the cellular nanomatrix. The powder compact further includes a bond layer extending throughout the cellular nanomatrix between the dispersed particles, wherein the cellular nanomatrix and the dispersed particles are substantially elongated in a predetermined direction.
    Type: Application
    Filed: July 29, 2011
    Publication date: January 31, 2013
    Inventor: Zhiyue Xu
  • Patent number: 8163060
    Abstract: The heat conductivity of an aluminum composite material containing a fibrous carbon material is enhanced. In order to realize this, a spark plasma sintered body having a fibrous carbon material compounded in a metal matrix powder of aluminum or the like is fabricated. At the time of fabrication, an aluminum powder serving as a matrix mother material is compounded with an Al alloy powder such as an Al-12Si powder having a melting point lower than the sintering temperature of the mother material. During the process of sintering the aluminum powder, the Al alloy powder is melted, whereby the heat conductivity between the aluminum powder particles and between the aluminum powder particle and the fibrous carbon material is improved.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: April 24, 2012
    Assignees: Sumitomo Precision Products Co., Ltd., Osaka Prefectural Government
    Inventors: Terumitsu Imanishi, Kazuaki Katagiri, Akiyuki Shimizu, Toyohiro Sato, Nobuhito Nakama, Atsushi Kakitsuji, Katsuhiko Sasaki
  • Publication number: 20120094016
    Abstract: The present invention provides an electrode material for aluminum electrolytic capacitors that has a high porosity and a high capacitance, and that does not require etching. Specifically, the invention provides an electrode material for aluminum electrolytic capacitors that contains a sintered body of at least one of aluminum and aluminum alloys, the sintered body having a porosity of 35 to 55%.
    Type: Application
    Filed: May 25, 2010
    Publication date: April 19, 2012
    Applicant: TOYO ALUMINIUM KABUSHIKI KAISHA
    Inventors: Toshifumi Taira, Masashi Mehata
  • Patent number: 8074750
    Abstract: Earth-boring tools for drilling subterranean formations include a particle-matrix composite material comprising a plurality of silicon carbide particles dispersed throughout a matrix material, such as, for example, an aluminum or aluminum-based alloy. In some embodiments, the silicon carbide particles comprise an ABC-SiC material. Methods of manufacturing such tools include providing a plurality of silicon carbide particles within a matrix material. Optionally, the silicon carbide particles may comprise ABC-SiC material, and the ABC-SiC material may be toughened to increase a fracture toughness exhibited by the ABC-SiC material. In some methods, at least one of an infiltration process and a powder compaction and consolidation process may be employed.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: December 13, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Heeman Choe, John H. Stevens, James L. Overstreet, Jimmy W. Eason, James C. Westhoff
  • Patent number: 7988758
    Abstract: Discontinuous diamond particulate containing metal matrix composites of high thermal conductivity and methods for producing these composites are provided. The manufacturing method includes producing a thin reaction formed and diffusion bonded functionally graded interactive SiC surface layer on diamond particles. The interactive surface converted SiC coated diamond particles are then disposed into a mold and between the particles and permitted to rapidly solidify under pressure. The surface conversion interactive SiC coating on the diamond particles achieves minimal interface thermal resistance with the metal matrix which translates into good mechanical strength and stiffness of the composites and facilitates near theoretical thermal conductivity levels to be attained in the composite. Secondary working of the diamond metal composite can be performed for producing thin sheet product.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: August 2, 2011
    Assignee: Nano Materials International Corporation
    Inventors: Sion M. Pickard, James C. Withers, Raouf O. Loutfy
  • Publication number: 20110091345
    Abstract: A method for producing a high strength aluminum alloy tubing containing L12 dispersoids from an aluminum alloy powder containing the L12 dispersoids. The powder is consolidated into a billet having a density of about 100 percent. The tube is formed by at least one of direct extrusion, Mannesmann process, pilgering, and rolling.
    Type: Application
    Filed: October 16, 2009
    Publication date: April 21, 2011
    Applicant: United Technologies Corporation
    Inventor: Awadh B. Pandey
  • Publication number: 20110088510
    Abstract: A method and apparatus for producing high strength aluminum alloys from a powder containing Ll2 intermetallic dispersoids. The powder is degassed, sealed under vacuum in a container, consolidated by vacuum hot pressing, extruded into a rolling preform and rolled into a usable part.
    Type: Application
    Filed: October 16, 2009
    Publication date: April 21, 2011
    Applicant: United Technologies Corporation
    Inventor: Awadh B. Pandey
  • Publication number: 20100274292
    Abstract: The present invention relates to a process for producing components consisting of magnesium or magnesium alloy by sintering. This process makes it possible, for the first time, to produce components consisting of magnesium or magnesium alloy which provide outstanding elasticity together with a sufficient strength. Materials of this type can be used as biocompatible endosseous implant materials.
    Type: Application
    Filed: April 23, 2010
    Publication date: October 28, 2010
    Applicant: GKSS-FORSCHUNGSZENTRUM GEESTHACHT GmbH
    Inventors: Martin Wolff, Thomas Ebel, Norbert Hort
  • Patent number: 7794520
    Abstract: A discontinuously reinforced metal matrix composite wherein the reinforcing material is a particulate binary intermetallic compound is described along with methods for preparing the same. The binary intermetallic compound includes the same type of metal as is the principal matrix metal in combination with one other metal. The particle size of the particulate binary intermetallic compound may be less than about 20 ?m and may be between about 1 ?m and about 10 ?m. The intermetallic particles may be present in the discontinuously reinforced metal matrix composites in an amount ranging from about 10% to about 70% by volume. The discontinuous reinforced metal matrix composites of the invention may be used in structures requiring greater strength and stiffness than can be provided by matrix metal alone. The materials of the invention may be used for vehicle parts, structural materials, and the like.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: September 14, 2010
    Assignee: Touchstone Research Laboratory, Ltd.
    Inventors: Gollapudi S. Murty, Brian E. Joseph
  • Patent number: 7780869
    Abstract: An efficient oxygen scavenging composition for use in film forming polymers is disclosed wherein the oxygen scavenging composition comprises an oxidizable metal particle, such as elemental iron; a water hydrolysable Lewis acid, such as aluminum chloride; and an acidifying electrolyte such as sodium or potassium bisulfate.
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: August 24, 2010
    Assignee: M&G USA Corporation
    Inventors: Kevin L. Rollick, Guliz Arf Elliott
  • Patent number: 7691173
    Abstract: The present invention includes consolidated hard materials, methods for producing them, and industrial drilling and cutting applications for them. A consolidated hard material may be produced using hard particles such as B4C or carbides or borides of W, Ti, Mo, Nb, V, Hf, Ta, Zr, and Cr in combination with an iron-based, nickel-based, nickel and iron-based, iron and cobalt-based, aluminum-based, copper-based, magnesium-based, or titanium-based alloy for the binder material. Commercially pure elements such as aluminum, copper, magnesium, titanium, iron, or nickel may also be used for the binder material. The mixture of the hard particles and the binder material may be consolidated at a temperature below the liquidus temperature of the binder material using a technique such as rapid omnidirectional compaction (ROC), the CERACON® process, or hot isostatic pressing (HIP). After sintering, the consolidated hard material may be treated to alter its material properties.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: April 6, 2010
    Assignee: Baker Hughes Incorporated
    Inventors: Jimmy W. Eason, James C. Westhoff, Roy Carl Lueth
  • Patent number: 7556668
    Abstract: The present invention includes consolidated hard materials, methods for producing them, and industrial drilling and cutting applications for them. A consolidated hard material may be produced using hard particles such as B4C or carbides or borides of W, Ti, Mo, Nb, V, Hf, Ta, Zr, and Cr in combination with an iron-based, nickel-based, nickel and iron-based, iron and cobalt-based, aluminum-based, copper-based, magnesium-based, or titanium-based alloy for the binder material. Commercially pure elements such as aluminum, copper, magnesium, titanium, iron, or nickel may also be used for the binder material. The mixture of the hard particles and the binder material may be consolidated at a temperature below the liquidus temperature of the binder material using a technique such as rapid omnidirectional compaction (ROC), the CERACON™ process, or hot ecstatic pressing (HIP). After sintering, the consolidated hard material may be treated to alter its material properties.
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: July 7, 2009
    Assignee: Baker Hughes Incorporated
    Inventors: Jimmy W. Eason, James C. Westhoff, Roy Carl Lueth
  • Patent number: 7524352
    Abstract: Certain preferred embodiments of the present invention relate to compositions for the production of sintered molded parts, components/parts produced therefrom, and methods for preparing such compositions. In accordance with certain embodiments, compositions for production of sintered molded parts comprise a metal-based, a ceramic-based, and/or a polymer-based powder, and a compaction aid, having 25 to 60 weight percent of a polyglycol, based on the total weight of the compaction aid, and 40 to 75 weight percent of a montan wax, based on the total weight of the compaction aid. The compaction aid may be present in an amount from about 0.1 to 5 weight percent, preferably 0.5 to 1.5 weight percent, based on the total weight of the composition. The composition may also include a lubricant such as, for example, MoS2, WS2, BN, MnS, and/or carbon.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: April 28, 2009
    Assignee: GKNM Sinter Metals GmbH
    Inventors: Rene Lindenau, Klaus Dollmeier, Volker Arnhold
  • Patent number: 7393595
    Abstract: A composite element comprises:(a) a metal or metal alloy component having an elastic modulus that decreases with increasing temperature in a temperature range; and (b) sufficient amount of a shape memory alloy component having an elastic modulus that shows an increase in elastic modulus with increasing temperature in the said temperature range, such that the elastic modulus of the composite element does not fall substantially as the temperature is increased across the said temperature range. An article comprising such a composite element is suitable for use in high temperature applications, including motor vehicle components.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: July 1, 2008
    Assignee: Qinetiq Limited
    Inventors: Lakshman Chandrasekaran, Alan J Shakesheff
  • Patent number: 7364632
    Abstract: The present invention is a process for producing a radiator member for electronic appliances, and is characterized in that, in a process for producing a radiator member for electronic appliances, the radiator member comprising a composite material in which SiC particles are dispersed in a matrix metal whose major component is Al, it comprises a filling step of filling an SiC powder into a mold, a pre-heating step of pre-heating the mold after the filling step to a pre-heating temperature which falls in a range of from a melting point or more of said matrix metal to less than a reaction initiation temperature at which a molten metal of the matrix metal and SiC particles in the SiC powder start to react, and a pouring step of pouring the molten matrix metal whose molten-metal temperature falls in a range of from the melting point or more of the matrix metal to less than the reaction initiation temperature, into the mold after the pre-heating step, and impregnating the SiC powder with the molten metal by pressur
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: April 29, 2008
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Katsufumi Tanaka, Tomohei Sugiyama, Kyoichi Kinoshita, Eiji Kono, Naohisa Nishino
  • Patent number: 7288325
    Abstract: A hydrogen storage material includes a nano size material that can be formed in a multi-layered core/shell structure and/or in a nanotabular (or platelet) form.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: October 30, 2007
    Assignee: The Pennsylvania State University
    Inventors: Peter C. Eklund, Terumi Furuta, Hajime Goto, Yoshiya Fujiwara, James H. Adair, Jennifer A. Nelson, Kishore Sreenivasan
  • Patent number: 7288133
    Abstract: A three-phase nanocomposite that comprises about 0.5 to 10 vol % nano-scale aluminum oxide particles and about 1 to 45% high modulus ceramic particles and an aluminum alloy matrix. The nano phase is to enhance nanocomposite strength and the modulus phase is to enhance the specific modulus of the resulting nanocomposite.
    Type: Grant
    Filed: February 6, 2004
    Date of Patent: October 30, 2007
    Assignee: DWA Technologies, Inc.
    Inventors: Jack Y. Peng, Mark R. van den Bergh, William C. Harrigan
  • Patent number: 7279023
    Abstract: Discontinuous diamond particulate containing metal matrix composites of high thermal conductivity and methods for producing these composites are provided. The manufacturing method includes producing a thin reaction formed and diffusion bonded functionally graded interactive SiC surface layer on diamond particles. The interactive surface converted SiC coated diamond particles are then disposed into a mold and between the particles and permitted to rapidly solidify under pressure. The surface conversion interactive SiC coating on the diamond particles achieves minimal interface thermal resistance with the metal matrix which translates into good mechanical strength and stiffness of the composites and facilitates near theoretical thermal conductivity levels to be attained in the composite. Secondary working of the diamond metal composite can be performed for producing thin sheet product.
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: October 9, 2007
    Assignee: Materials and Electrochemical Research (MER) Corporation
    Inventors: Sion M. Pickard, James C. Withers, Raouf O. Loutfy
  • Patent number: 7186288
    Abstract: A method of production of large Ingots of neutron attenuating composites using a vacuum-bellows system allows for large cross-sectional shapes to be extruded and rolled. This method uses a vacuum-bellows technology which allows the manufacturing of large 8–16 inch diameter ingots (50–450 lbs. each). A variety of primary metal matrix materials can be used in this technology. High specific strength and stiffness can be achieved because the technology allows for final densities of 99% and higher. The vacuum-bellows technology allows metals and ceramics to blend and mesh together at compression pressures of 800 tons with elevated temperatures. The controlled compression movement allows for any oxide layer, on the metal, to be broken up and consolidated with the chosen ceramic particulate.
    Type: Grant
    Filed: October 8, 2004
    Date of Patent: March 6, 2007
    Inventor: Robin A. Carden
  • Patent number: 7172641
    Abstract: A composite of M/AlMgB14 or M alloy/AlMgB14 is synthesized, where M=Al, Ti, W, or Cu. Small particles and/or fibers of AlMgB14 are distributed throughout a metal matrix to strengthen the resulting composite.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: February 6, 2007
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Bruce Allan Cook, Alan Mark Russell, Joel Lee Harringa, S. Bulent Biner, Iver Anderson
  • Patent number: 7052526
    Abstract: A magnesium base composite material is provided such that compound particles generated by a solid-phase reaction with magnesium are uniformly dispersed in a magnesium alloy body. The compound particles dispersed in the body comprise magnesium silicide (Mg2Si) and magnesium oxide (MgO) so that the magnesium base composite material may have excellent strength, hardness and abrasion resistance and tempered opponent aggression.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: May 30, 2006
    Assignee: Toudai TLO, Ltd.
    Inventor: Katsuyoshi Kondoh
  • Patent number: 6849102
    Abstract: A discontinuously reinforced metal composite, having a metal matrix and a plurality of intermetallic particles comprising at least two different metals, the intermetallic particles having a size ranging from 1 ?m to about 10 ?m and being dispersed within the metal matrix in an amount of at least 20% by volume, wherein the intermetallic particles are particles having at least one same metal as the metal in the metal matrix.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: February 1, 2005
    Assignee: Touchstone Research Laboratory, Ltd.
    Inventors: Gollapudi S. Murty, Brian E. Joseph
  • Patent number: 6837915
    Abstract: High theoretical density, metal-based materials containing graphite or hexagonal boron nitride have low coefficients of friction and wear rates are useful for bearings, bushings and other articles subject to bearing loads.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: January 4, 2005
    Assignee: SCM Metal Products, Inc.
    Inventors: Stephen D. Dunmead, James M. Marder
  • Publication number: 20040208772
    Abstract: A sinter metal part with a homogeneous distribution of non-homogeneously melting components, essentially comprising non-homogeneously melting non ferrous metal powder mixtures, produced in the following manner: continuous isostatic pressure sintering of the starting material to obtain densities which substantially correspond to the density of a high-temperature isostatically pressed solid having the same composition, using die in conditions avoiding the occurrence of a liquid phase in powder at temperatures of up to 70% of the metal melting point, preferably up to 60% of the metal melting point, forming a sinter profile substantially possessing a final contour.
    Type: Application
    Filed: January 13, 2004
    Publication date: October 21, 2004
    Inventors: Anton Eiberger, Manfred Arlt, Manfred Heinritz, Rainhard Laag, Angelika Pohl, Jochen Schmid, Otto Stock, Gerhard Subek, Alfred Bolstler
  • Patent number: 6805725
    Abstract: A bond coat composition for use in thermal barrier coatings comprises a NiAl—CoCrAlY matrix containing particles of AlN dispersed therein. The bond coat composition is prepared by croymilling NiAl and CoCrAlY in liquid nitrogen.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: October 19, 2004
    Assignee: Ohio Aerospace Institute
    Inventor: Mohan G. Hebsur
  • Publication number: 20040144204
    Abstract: The present invention pertains to an AlRu sputtering target characterized in that it is a sintered body composed of an AlRu intermetallic compound of 95 vol. % or more, and an object thereof is to enable the stable and low-cost manufacture of an AlRu sputtering target having an even texture and capable of significantly reducing oxygen, and to prevent or suppress the generation of particles and improve the yield ratio of deposition goods.
    Type: Application
    Filed: December 4, 2003
    Publication date: July 29, 2004
    Inventor: Akira Hisano
  • Patent number: 6746507
    Abstract: There are disclosed a method for producing a composite material composed of a dispersing agent and a matrix, and a composite material produced by the method. The matrix is formed by the steps of coating a metal-coated dispersing agent to form a metal-coated layer on the surface of the dispersing agent, filling the metal-coated dispersing agent in a jig prepared in a fixed shape, and then causing the reaction of the metal-coated layer with a molten Al by impregnating the metal-coated dispersing agent with the molten Al filled in the jig.
    Type: Grant
    Filed: March 25, 2002
    Date of Patent: June 8, 2004
    Assignee: NGK Insulators, Ltd.
    Inventors: Masayuki Shinkai, Masahiro Kida, Takahiro Ishikawa, Toshimasa Ochiai
  • Patent number: 6666901
    Abstract: Targets for the fabrication of quasicrystalline films are prepared from powders of the elemental constituents of the objective quasicrystalline material that have been pressed into a required target shape. The temperature of target fabrication is maintained sufficiently low that quasicrystalline alloy formation does not occur during target fabrication. Due to the high thermal shock resistance of each of the individual constituents and due to the dispersed form of the powders comprising the target, the target demonstrates very high resistance to thermal shock.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: December 23, 2003
    Assignee: Technology Assessment & Transfer, Inc.
    Inventor: Larry Lee Fehrenbacher
  • Patent number: 6630008
    Abstract: Objects comprising carbide particulate having pressure consolidated nanocrystalline coating material are formed. Oxides of the coating material, in particulate form, may become dispersed in the pressure consolidated object, thereby increasing its strength.
    Type: Grant
    Filed: September 18, 2000
    Date of Patent: October 7, 2003
    Assignee: Ceracon, Inc.
    Inventors: Henry S. Meeks, III, Marc S. Fleming
  • Publication number: 20030147767
    Abstract: A tablet formed by prealloys iron-aluminum produced from automized powders to be used as additive element in aluminum alloys, is manufactured by the method having the steps of obtaining a metallic alloy by fusion of iron and aluminum with the iron and aluminum added in an electric arc or induction furnace, automizing the melted alloy by transporting the melted alloy to an intermediary contsiner with an opening as a metal flux controlled by a valve located in the opening for controlling and proportionating a continuous flux and supplying a jet of water under pressure when the liquid metal drains to provide a atomization and to produce small droplets that cool in water, solidify and are deposited as a powder; reducing humidity of the powder; classifying the thusly produced material, and compacting a thin fraction of the material for obtaining tablets; a tablet.
    Type: Application
    Filed: January 22, 2003
    Publication date: August 7, 2003
    Inventor: Ivan Calia Barchese
  • Patent number: 6602314
    Abstract: The present invention provides an aluminum composite material having neutron absorbing power that improves the ability to absorb neutrons by increasing the content of B, while also being superior to materials of the prior art in terms of mechanical properties and workability. The aluminum composite material having neutron absorbing power contains in Al or an Al alloy matrix phase B or a B compound having neutron absorbing power in an amount such that the proportion of B is 1.5% by weight or more to 9% by weight or less, and the aluminum composite material has been pressure sintered.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: August 5, 2003
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Yasuhiro Sakaguchi, Tomikane Saida, Kazuo Murakami, Kazuhisa Shibue, Naoki Tokizane, Tatsumi Takahashi
  • Patent number: 6514309
    Abstract: An alloy feedstock for semi-solid metal injection molding. The alloy feedstock is an alloy material in particulate form and has a heterogeneous structure, a temperature range at 20% of the height of the peak of the main melting reaction greater than 40° C., and having a ratio of the height of the peak of the eutectic reaction to the height of the main melting reaction of less than 0.5.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: February 4, 2003
    Assignee: Thixomat, Inc.
    Inventors: Stephen E. LeBeau, D. Matthew Walukas, Raymond F. Decker