With Another Binary Nonmetal Patents (Class 419/16)
  • Patent number: 10451690
    Abstract: One example includes a method for fabricating a compound material. The method includes providing a first discrete material layer having a first thickness dimension. The first discrete material layer includes a first material having a first magnetic susceptibility. The method also includes depositing a second discrete material layer having a second thickness dimension over the first discrete material layer. The second discrete material layer can include a second material having a second magnetic susceptibility. The relative first and second thickness dimensions can be selected to provide a desired magnetic susceptibility of the compound material.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: October 22, 2019
    Assignee: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventor: Michael D. Bulatowicz
  • Patent number: 8859115
    Abstract: This cemented carbide material for a surface coated gear cutting tool is employed in a substrate for a surface coated gear cutting tool which is obtained by forming a hard coated layer on a surface of the substrate, the cemented carbide material for a surface coated gear cutting tool includes a WC-?t-Co based cemented carbide, wherein a content of Co forming a binder phase of the cemented carbide material is in a range of 12 to 17 wt %, and among components of a ?t solid solution forming a hard phase of the cemented carbide material, a content of components excluding WC is in a range of 15 to 20 wt %, and a total content of Ta carbonitride and Nb caronitride is in a range of 5 to 8 wt %.
    Type: Grant
    Filed: June 11, 2004
    Date of Patent: October 14, 2014
    Assignee: Mitsubishi Materials Corporation
    Inventor: Yukio Aoki
  • Publication number: 20140271321
    Abstract: The present invention relates to a method of making a cemented carbide or a cermet body comprising the steps of first forming a powder blend comprising powders forming hard constituents and metal binder. The powder blend is then subjected to a mixing operation using a non-contact mixer wherein acoustic waves achieving resonance conditions to form a mixed powder blend and then subjecting said mixed powder blend to a pressing and sintering operation. The method makes it possible to maintain the grain size, the grain size distribution and the morphology of the WC grains.
    Type: Application
    Filed: October 17, 2012
    Publication date: September 18, 2014
    Applicant: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Carl-Johan Maderud, Tommy Flygare, Michael Carpenter, Jane Smith
  • Patent number: 8535407
    Abstract: The invention relates to a hard-metal comprising at least 13 volume % of a metal carbide selected from the group consisting of TiC, VC, ZrC, NbC, MoC, HfC, TaCl WC or a combination thereof, a binder phase comprising one or more of iron-group metals or alloy thereof and 0.1 to 10 weight % Si and 0.1 to 10 weight % Cr and having a liquidus temperature at 1280 degrees C. or lower and 3 to 39 volume % of diamond or cBN grains coated with a protective coating or a mixture thereof and a process for making the hard-metal.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: September 17, 2013
    Assignee: Element Six GmbH
    Inventors: Igor Yuri Konyashin, Bernd Heinrich Ries, Frank Friedrich Lachmann
  • Publication number: 20130052075
    Abstract: A wear pad of a band saw guide exposed to wear from a moving band saw blade is produced in a powder metallurgical manner from a steel material having the following composition, in percent by weight: 0.01-2 C, 0.01-3.0 Si, 0.01-10.0 Mn, 16-33 Cr, max. 5 Ni, 0.01-5.0 (W+Mo/2), max. 9 Co, max. 0.5 S, 1.6-9.8 N, 7.5 to 14 of (V+Nb/2), wherein the contents of N and of (V+Nb/2) are balanced in relation to each other so that the contents of the elements are within a range I?, F?, G, H, I? in a coordinate system, where the content of N is the abscissa and the content of (V+Nb/2) is the ordinate, and where the coordinates for the points (in the format [x: (N, (V+Nb/2)]) are [I?: (1.6, 7.5)], [F?: (5.8, 7.5)], [G: (9.8, 14.0)], and [H: (2.6, 14.0)], max 7 of any of Ti, Zr, and Al; and a balance essentially only iron and unavoidable impurities.
    Type: Application
    Filed: March 9, 2011
    Publication date: February 28, 2013
    Inventor: Jan Boström
  • Patent number: 7635448
    Abstract: A compact is obtained from a mixed powder of a multi-component system ceramics composed of constitutive elements of at least two metal elements selected from the group consisting of Ti, Al, V, Nb, Zr, Hf, Mo, Ta, Cr, and W, N, and optionally C; and Fe, Ni, Co, or an alloy composed of a constitutive element of at least one metal element of Fe, Ni, and Co. A composite material is prepared by sintering the compact.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: December 22, 2009
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Mitsuo Kuwabara, Masanori Ohtsuka
  • Patent number: 7588621
    Abstract: A titanium based carbonitride alloy containing Ti, Nb, W, C, N and Co. The alloy also contains, in addition to Ti, 9-14 at % Co with only impurity levels of Ni and Fe, 1-<3 at % Nb, 3-8 at % W and has a C/(C+N) ratio of 0.50-0.75. The amount of undissolved Ti(C,N) cores should be kept between 26 and 37 vol % of the hard constituents, the balance being one or more complex carbonitrides containing Ti, Nb and W. The alloy is particularly useful for milling of steel.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: September 15, 2009
    Assignee: Sandvik Intellectual Property Aktiebolag
    Inventors: Gerold Weinl, Ulf Rolander, Marco Zwinkels
  • Publication number: 20080206585
    Abstract: Composite materials comprising a hard ceramic phase and an infiltration alloy are disclosed. The hard ceramic phase may comprise a carbide such as tungsten carbide and/or cast carbide. The infiltration alloy is a heat treatable Cu-based alloy comprising Ni and Mn. The infiltration alloy may be substantially free of Sn and Zn. The composite material is heat treated in order to improve its mechanical properties. For example, the composition of the Cu—Ni—Mn infiltration alloy may be selected such that its hardness, wear resistance, toughness and/or transverse rupture strength are improved after the composite material is solutionized, cooled and thermally aged.
    Type: Application
    Filed: February 22, 2007
    Publication date: August 28, 2008
    Inventors: Xin Deng, Harold E. Kelley
  • Patent number: 7332122
    Abstract: A titanium based carbonitride alloy containing Ti, Nb, W, C, N and Co. The alloy also contains, in addition to Ti, 9-14 at % Co with only impurity levels of Ni and Fe, 1-<3 at % Nb, 3-8 at % W and has a C/(C+N) ratio of 0.50-0.75. The amount of undissolved Ti(C,N) cores should be kept between 26 and 37 vol % of the hard constituents, the balance being one or more complex carbonitrides containing Ti, Nb and W. The alloy is particularly useful for milling of steel.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: February 19, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventors: Gerold Weinl, Ulf Rolander, Marco Zwinkels
  • Patent number: 6919040
    Abstract: A method of producing an abrasive product consists of providing a mixture of a mass of discrete carbide particles and a mass of cubic boron nitride particles, the cubic boron nitride particles being present in the mixture in an amount such that the cubic boron nitride content of the abrasive product is 25% or less by weight, and subjecting the mixture to elevated temperature and pressure conditions at which the cubic boron nitride is crystallographically stable and at which substantially no hexagonal boron nitride is formed, in the presence of a bonding metal or alloy capable of bonding the mixture into a coherent, sintered product, to form the abrasive product. The bonding metal or alloy comprises a combination of a transition metal or a transition alloy and up to 40% by volume of the bonding metal or alloy of a second metal which is a stronger nitride or boride former than the transition metal or the transition metal alloy.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: July 19, 2005
    Inventors: Robert Fries, Peter Michael Harden
  • Publication number: 20030063992
    Abstract: A method of making powder metal compacted parts of multiple dissimilar materials. A die insert is provided having a pattern of cavities corresponding in shape to the shape of a die cavity. The pattern of cavities are filled with two or more dissimilar powder metals which are subsequently pressed within the die cavity to form a compacted powder metal part having at least two discrete regions of dissimilar material.
    Type: Application
    Filed: October 3, 2001
    Publication date: April 3, 2003
    Inventors: Matthew W. Crump, Tom L. Stuart, Marc L. Legault
  • Patent number: 6506226
    Abstract: The invention relates to a hard metal or cermet body with a hard material phase consisting of WC and/or at least one carbide, nitride, carbonitride and/or oxicarbonitride of at least one of the elements from group IVa, Va, or VIa of the periodic table and a binding metal phase consisting of Fe, Co and/or Ni, said binding metal phase making up 3 to 25 mass %. In particular, WC crystallites should protrude beyond the hard metal or cermet surface of the by 2 to 20 &mgr;m in order to improve the adhesion of surface layers that are applied.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: January 14, 2003
    Assignee: Widia GmbH
    Inventors: Limin Chen, Walter Lengauer, Hans Werner Daub, Klaus Dreyer, Dieter Kassel, José Garcia, Georg Korb
  • Patent number: 6197083
    Abstract: The present invention relates to a method for obtaining a sintered body of carbonitride alloy with titanium as main component which does not have a binder phase layer on the surface after sintering. This is obtained by performing the liquid phase sintering step of the process at 1-80 mbar of CO gas in the sintering atmosphere.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: March 6, 2001
    Assignee: Sandvik AB
    Inventors: Ulf Rolander, Gerold Weinl
  • Patent number: 6129891
    Abstract: The present invention relates to a sintered body of titanium-based carbonitride alloy comprising hard constituents containing at least tungsten in addition to titanium in a binder phase based on cobalt. There are four distinctly different microstructural components, namely: A) cores which are remnants of and have a metal composition determined by the raw material powder; B) tungsten-rich cores formed during the sintering; C) outer rims with intermediate tungsten content formed during the sintering; and D) a binder phase of a solid solution of at least titanium and tungsten in cobalt. Toughness and wear resistance are varied by adding WC, (Ti,W)C, and/or (Ti,W)(C,N) in varying amounts as raw materials.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: October 10, 2000
    Assignee: Sandvik AB
    Inventors: Ulf Rolander, Gerold Weinl, Per Lindahl, Hans-Olof Andren
  • Patent number: 6024776
    Abstract: Cermets having a Co--Ni--Fe-binder are described. The Co--Ni--Fe-binder is unique in that even when subjected to plastic deformation, the binder substantially maintains its face centered cubic crystal structure and avoids stress and/or strain induced phase transformations. Stated differently, the Co--Ni--Fe-binder exhibits reduced work hardening.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: February 15, 2000
    Assignee: Kennametal Inc.
    Inventors: Hans-Wilm Heinrich, Manfred Wolf, Dieter Schmidt, Uwe Schleinkofer
  • Patent number: 5918103
    Abstract: Disclosed are a plate-crystalline tungsten carbide-containing hard alloy which comprises 4 to 40% by volume of a binder phase containing at least one of iron group metals selected from Co, Ni and Fe as a main component; and the balance of a hard phase comprising tungsten carbide alone, or tungsten carbide and 50% by volume or less of a compound with a cubic structure selected from at least one of carbide and nitride of the 4a (Ti, Zr and Hf), 5a (V, Nb and Ta) or 6a (Cr, Mo and W) group element of the periodic table and mutual solid solutions thereof, and inevitable impurities,wherein when peak intensities at a (001) face and a (101) face in X-ray diffraction using K.alpha. rays with Cu being a target are represented by h(001) and h(101), respectively, the tungsten carbide satisfies h(001)/h(101).gtoreq.0.50, a composition for forming a plate-crystalline tungsten carbide, and a process for preparing the plate-crystalline tungsten carbide-containing hard alloy.
    Type: Grant
    Filed: August 6, 1996
    Date of Patent: June 29, 1999
    Assignee: Toshiba Tungaloy Co., Ltd.
    Inventors: Masaki Kobayashi, Kozo Kitamura, Satoshi Kinoshita
  • Patent number: 5889219
    Abstract: A sintered body having diamond grains dispersed and held in a matrix of cemented carbide or cermet is obtained by direct resistance heating and pressurized sintering. The sintering is performed at a liquid phase generating temperature in a short time, so that the diamond grains are not directly bonded to each other. Thus, a superhard composite member that has excellent hardness and wear resistance can be obtained without employing an ultra high-pressure vessel.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: March 30, 1999
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hideki Moriguchi, Yoshifumi Arisawa, Michio Otsuka
  • Patent number: 5860055
    Abstract: In a process for producing granular material in which at least one hard material phase is mixed with a metal powder and a binder and granulated, no premixing of the hard material phase and the metal powder takes place before mixing with the binder and the binder has a viscosity of from 20 to 200 cm.sup.3 /10 min, preferably from 30 to 100 cm.sup.3 /10 min, in accordance with DIN 53735 at 195.degree. C. and a load of 2.16 kg.
    Type: Grant
    Filed: March 24, 1997
    Date of Patent: January 12, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Hesse, Knut Bittler
  • Patent number: 5762843
    Abstract: Methods for making, methods for using and articles having cermets, preferably cemented carbides and more preferably tungsten carbide, having at least two regions exhibiting at least one property that differs are discussed. Preferably, the cermets further exhibit a portion that is binder rich and which gradually or smoothly transitions to at least a second region. The multiple-region cermets are particularly useful in compressively loaded application wherein a tensile stress or fatigue limit might otherwise be excessive for monolithic articles. The cermets are manufactured by juxtaposing and densifying at least two powder blends having different properties (e.g., differential carbide grain size, differential carbide chemistry, differential binder content, differential binder chemistry, or any combination of the preceding).
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: June 9, 1998
    Assignee: Kennametal Inc.
    Inventors: Ted R. Massa, John S. Van Kirk, Robert R. McNaughton, Jr.
  • Patent number: 5754935
    Abstract: The present invention provides a vane material having an excellent scuffing resistance in a compressor employing an alternative Freon gas as a cooling medium and a process for the preparation thereof. In accordance with the present invention, a vane material is provided having a structure comprising a base material consisting essentially of 1.0 to 4.5% by weight of carbon, not more than 1.5% by weight of silicon, not more than 1.0% by weight of manganese, 3 to 6% by weight of chromium, not more than 30% of tungsten and/or not more than 20% by weight of molybdenum provided that (W+2Mo) is not more than 45% by weight, 2 to 10% by weight of vanadium and/or niobium, not more than 20% by weight of cobalt, and a balance of iron and inavoidable impurities with additive particles of a carbide and additive particles of a nitride and/or a carbonitride, sintered thereto in an amount of more than 0% to not more than 25% by weight and 2 to 25% by weight based on the total weight of the vane material, respectively.
    Type: Grant
    Filed: June 10, 1994
    Date of Patent: May 19, 1998
    Assignee: Hitachi Metals, Ltd.
    Inventors: Yutaka Kubo, Hideki Nakamura, Norimasa Uchida, Keiji Yamasaki
  • Patent number: 5694639
    Abstract: A sintered body of titanium based carbonitride alloy containing hard constituents based on, in addition to titanium, one or more of the metals Zr, Hf, V, Nb, Ta, Cr, No or W in 5-30% binder phase based on Co and/or Ni is disclosed. The body has a binder phase enriched surface zone with a higher binder phase content than in the inner portion of the body in combination with an enrichment of simple hard constituents, i.e., the share of grains with core-rim structure is lower in the surface zone than in the inner of the body.A method of manufacturing the sintered carbonitride alloy is also provided which comprises forming a powder mixture containing binder phase containing Co and/or Ni and hard constituents of carbides and nitrides with titanium as a main component, the mixture having composition which is substoichiometric regarding an interstitial balance and sintering the mixture to completely transform the substoichiometric phases to stoichiometric by heating a) in vacuum to 1100-1200 C.
    Type: Grant
    Filed: January 30, 1996
    Date of Patent: December 2, 1997
    Assignee: Sandvik AB
    Inventors: Rolf Gregor Oskarsson, Gerold Weinl
  • Patent number: 5682590
    Abstract: A titanium-based carbonitride grade for finishing and semi-finishing turning operations with excellent properties is obtained starting from a titanium-based carbonitride grade used for milling operations. The carbon content of a conventional titanium-based carbonitride grade used for milling operations is optimized in such a way that it is close to the point where .eta.-phase or other substoichiometric phases are formed. The improved titanium-based carbonitride is also provided with a thin wear resistant Ti-containing coating deposited preferably by PVD technique.
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: October 28, 1997
    Assignee: Sandvik AB
    Inventor: Gerold Weinl
  • Patent number: 5670726
    Abstract: In order to improve the toughness characteristics of a cermet alloy, while retaining high resistance to wear, a composition is disclosed which contains 30 to 60% by weight of Ti, 5 to 20% by weight of W, 5 to 15% by weight of Ta, in which up to 70% of the Ta can be replaced by Nb, and 5 to 25% by weight of Ni and/or Co binder with more than 80 mole %, relative to the above transition elements of carbon and nitrogen. The composition is prepared by grinding, compressing and sintering a solid, powder-form mixture containing (Ti,W,Ta,Nb)C powder, Ti(C,N) powder, and WC powder, each powder having a particle size <1.5 .mu.m, plus Ni powder and/or Co powder. The mixture includes the following ingredients: (a) (Ti,W,Ta,Nb)C with a mean particle size <1.5 .mu.m, this mixed carbide containing 20 to 50% by weight of TiC, 20 to 40% by weight of WC, and 20 to 40% by weight of (Ta, Nb)C; (b) Ti(C,N), with a mean particle size <1.5 .mu.m and an N/(C+N) ratio <0.7; WC with a mean particle size <1.5 .mu.
    Type: Grant
    Filed: September 1, 1995
    Date of Patent: September 23, 1997
    Assignee: Widia GmbH
    Inventors: Hans Kolaska, Klaus Dreyer
  • Patent number: 5590388
    Abstract: A method of producing a molded ceramic article comprises the first step mixing powdery raw materials and a liquid additive, thereby obtaining a mixed raw material, the second step press-molding the mixed raw material obtained in the first step in a hydrostatically applied condition of pressure, thereby removing an excess of the liquid additive to obtain a preform, and the third step calcining the preform obtained in the second step to obtain a molded ceramic article. The molded ceramic article comprises, as a principal component, copper and, as essential components, Cr and Ni within composition ranges of 0.1.ltoreq.Cr<2 wt. % and 0.1.ltoreq.Ni<10 wt. % and further at least one additive component selected from the group consisting of the following composition ratios: the following composition ratios: 0<Fe<5 wt. %, 0.ltoreq.Co<5 wt. %, 0.ltoreq.Al<10 wt. %, 0.ltoreq.Ti<20 wt. %, 0.ltoreq.Mo<3 wt. %, 0.ltoreq.Si<3 wt. %, 0.ltoreq.V<3 wt. %, 0.ltoreq.Mg<1 wt. %, and 0.ltoreq.
    Type: Grant
    Filed: September 1, 1994
    Date of Patent: December 31, 1996
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Mitsuo Kuwabara, Kiyoshi Ikegami, Teruaki Yoshida, Koji Takahashi, Tamotsu Harada, Takeshi Komiyama, Fumio Hirai, Masamichi Hayashi
  • Patent number: 5590393
    Abstract: The invention relates to a neutron-absorbing material and to its production process.This material comprises a homogeneous, boron carbide matrix 1 in which are dispersed e.g. pseudospherical, 150 to 500 .mu.m , calibrated clusters 3 of boride such as HfB.sub.2, in order to prevent the propagation of cracks F in the material and improve its thermal shock resistance.
    Type: Grant
    Filed: February 7, 1995
    Date of Patent: December 31, 1996
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Guy M. Decroix, Dominique Gosset, Bernard Kryger
  • Patent number: 5579532
    Abstract: A composite jet engine compressor ring is made by casting a tape reinforced with ceramic fibers, winding the cast tape around a mandrel to form an unconsolidated ring, heating the ring to drive off binder, and pressing at a high temperature to form a unitary composite ring. Compression of the ring in an axial direction during hot pressing results in a desired axial spacing between adjacent fibers. The tape is preferably cast from a mixture of titanium base metal particles and a polyisobutylene binder dissolved in an organic solvent.
    Type: Grant
    Filed: June 16, 1992
    Date of Patent: November 26, 1996
    Assignee: Aluminum Company of America
    Inventor: Jon F. Edd
  • Patent number: 5470372
    Abstract: There is now provided a sintered titanium-based carbonitride alloy for metal cutting containing hard constituents based on Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and/or W and 3-30% binder phase based on Co and/or Ni. The structure contains well-dispersed and/or as agglomerates, 10-50% by volume hard constituent grains essentially without core-rim structure with a mean grain size of 0.8-5 .mu.m in a more fine-grained matrix with a mean grain size of the hard constituents of <1 .mu.m. The matrix is made from a powder being prepared from an intermetallic pre-alloy disintegrated to <50 .mu.m particle size and then carbonitrided in situ to extremely fine-grained hard constituents having a diameter .ltoreq.0.1 .mu.m within the binder phase metals.
    Type: Grant
    Filed: June 22, 1993
    Date of Patent: November 28, 1995
    Assignee: Sandvik AB
    Inventor: Gerold Weinl
  • Patent number: 5462575
    Abstract: A powder metallurgy article formed from a Co--Cr--Mo alloy powder and a method for making the article are disclosed. The Co--Cr--Mo alloy powder contains, in weight percent, about 0.35% max. C, about 1.00% max. Mn, about 1.00% max. Si, about 26.0-30.0% Cr, about 5.0-7.0% Mo, about 3% max. Ni, about 0.25% max. N, about 1.00% max. Fe, about 0.01% max. of oxide forming metals, and the balance is essentially Co. Within their respective weight percent limits C and N are controlled such that they satisfy the relationship:62.866+360.93.times.(%C)+286.633.times.(%N)-682.165.times.(%C).sup.2 -641.702.times.(%N).sup.2 .gtoreq.120.
    Type: Grant
    Filed: December 23, 1993
    Date of Patent: October 31, 1995
    Assignee: CRS Holding, Inc.
    Inventor: Gregory J. Del Corso
  • Patent number: 5460640
    Abstract: A fully dense ceramic-metal body including 40-88 v/o of an oxide hard phase of, in v/o of the body, 4-88 v/o M-aluminum binary oxides, where the binary oxide has a C-type rare earth, garnet, .beta.-MAl.sub.11 O.sub.18, or perovskite crystal structure, and M is a lanthanide or indium, and 0-79 v/o .alpha.-alumina; about 10-50 v/o of a hard refractory carbide, nitride, or boride as a reinforcing phase; and about 2-10 v/o of a dispersed metal phase combining Ni and Al mostly segregated at triple points of the microstructure. The preferred metal phase contains a substantial amount of the Ni.sub.3 Al ordered crystal structure. In the preferred body, the reinforcing phase is silicon carbide partially incorporated into the oxide grains, and bridges the grain boundaries. The body including a segregated metal phase is produced by densifying a mixture of the hard phase components and the metal component, with the metal component being present in the starting formulation as Ni powder and Al powder.
    Type: Grant
    Filed: August 17, 1992
    Date of Patent: October 24, 1995
    Assignee: Valenite Inc.
    Inventor: Sergej-Tomislav Buljan
  • Patent number: 5437833
    Abstract: This invention relates generally to a novel method of manufacturing a composite body, such as a ZrB.sub.2 --ZrC--Zr (optional) composite body, by utilizing a post-treatment process and to the novel products made thereby. More particularly, the invention relates to a method of modifying a composite body comprising one or more boron-containing compounds (e.g., a boride or a boride and a carbide) which has been made by the reactive infiltration of a molten parent metal into a bed or mass containing boron carbide, and optionally one or more inert fillers, to form the body.
    Type: Grant
    Filed: March 25, 1994
    Date of Patent: August 1, 1995
    Assignee: Lanxide Technology Company, LP
    Inventors: Terry D. Claar, Gerhard H. Schiroky, William B. Johnson
  • Patent number: 5434112
    Abstract: A high pressure injection nozzle member is formed of a super hard alloy or a hard material of carbide series mainly composing of a tungsten carbide as, wherein the tungsten carbon is composed of grains each having a diameter of less than 1 .mu.m. At least one kind of carbide or solid solution of carbide selected from Ti, Ta, V, Cr, Mo, Hf, or Zr by a weight % of less than 10.0% is added. A binding material essentially consisting of at least one of iron group elements by weight % of 0.2 to 2.0% may be further added. The super hard alloy or a hard sintered material has a high abrasion proof property and has a hardness more than about HRA 94.0. Nitride or nitride solid solution may be utilized in place of carbide or carbide solid solution. The nozzle member is particularly suitable for an abrasive water jet.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: July 18, 1995
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Shigetomo Matsui, Hiroyuki Matsumura, Yoshikazu Ikemoto, Yasuhiro Kumon, Shigeru Nakayama, Keiji Tsujita, Keisuke Fukunaga, Nobuhiro Kuribayashi, Kenichi Wakana
  • Patent number: 5421851
    Abstract: The present invention relates to a sintered titanium-based carbonitride alloy for milling and turning where the hard constituents are based on Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and/or W and the binder phase based on Co and/or Ni. The structure comprises 10-50% by volume hard constituent grains with core-rim-structure with a mean grain size for the cores of 2-8 .mu.m in a more fine-grained matrix with a mean grain size of the hard constituents of <1 .mu.m and where said mean grain size of the coarse hard constituents grains is >1.5 .mu.m, preferably >2 .mu.m, larger than the mean grain size for the grains in the matrix. The coarse grains can be Ti(C,N), (Ti,Ta)C, (Ti,Ta)(C,N) and/or (Ti,Ta,V)(C,N).
    Type: Grant
    Filed: May 6, 1992
    Date of Patent: June 6, 1995
    Assignee: Sandvik AB
    Inventors: Rolf G. Oskarsson, Gerold Weinl, Ake Ostlund
  • Patent number: 5403373
    Abstract: A hard sintered component of a cemented carbide or a stellite alloy having a complex three-dimensional shape and a small hole or the like and the high strength originally provided by the used material for making the component without any secondary working, is formed by injection molding a compact molding die having an inner mold surface roughness R.sub.max of not more than 3 .mu.m. Where a core pin is used the outer surface of the pin has a surface roughness R.sub.max of not more than 3 .mu.m. The compact is then sintered. The hard sintered component is composed of a cemented carbide or a stellite alloy. In such a hard sintered component, the surface of a complex three-dimensional shape such as a disc portion or a thin portion, or the inner surface of a small hole, is defined by a sintered surface which has a surface roughness R.sub.max of not more than 4 .mu.m.
    Type: Grant
    Filed: May 28, 1992
    Date of Patent: April 4, 1995
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Nobuyuki Kitagawa, Toshio Nomura
  • Patent number: 5403542
    Abstract: Method of manufacturing a sintered carbonitride alloy comprising wet milling powders of forming binder phase containing Co, Ni and mixture thereof and powder forming hard constituents of nitrides and carbonitrides with Ti as the main component to a mixture with desired composition; compacting said mixture to form compact; heating the compact at 100-300 C. in oxygen or air and subjecting said compact in multiple heating steps to effect sintering.
    Type: Grant
    Filed: February 10, 1994
    Date of Patent: April 4, 1995
    Assignee: Sandvik AB
    Inventors: Gerold Weinl, Rolf G. Oskarsson, Per Gustafsson
  • Patent number: 5403541
    Abstract: Method of making sintered insert for milling and turning formed of a titanium-based carbonitride containing hard constituents and binder phase metal comprising milling at least one hard constituent with binder phase metal, adding a second hard constituent at a later time during milling, pressing and sintering the pressed constituents to form the insert.
    Type: Grant
    Filed: May 6, 1992
    Date of Patent: April 4, 1995
    Assignee: Sandvik AB
    Inventors: Rolf G. Oskarsson, Gerold Weinl, Ake stlund
  • Patent number: 5403374
    Abstract: A watch exterior part is formed of cemented carbide or stellite alloy, and has a three-dimensionally curved as-sintered surface or a small hole with an as-sintered interior peripheral surface, or has a three-dimensionally curved polished surface obtained by polishing an as-sintered surface. The watch exterior part is manufactured by a method in which organic binder is milled into a material powder, and a molded body obtained by injection molding is subjected to a binder removing process and then sintered. By the manufacturing method, a watch exterior part formed of cemented carbide or stellite alloy has a high strength and a complicated configuration such as a three-dimensional curved surface and a small hole, without applying secondary machining operations such as discharge operations.
    Type: Grant
    Filed: May 28, 1992
    Date of Patent: April 4, 1995
    Assignees: Sumitomo Electric Industries, Ltd., Namiki Precision Jewel Co., Ltd.
    Inventors: Nobuyuki Kitagawa, Toshio Nomura, Yoichi Yaguchi, Hidehiro Uchiumi, Naoko Iwashimizu
  • Patent number: 5403790
    Abstract: This invention relates generally to a novel method of manufacturing a composite body. More particularly, the present invention relates to a method for modifying the resultant properties of a composite body, by, for example, minimizing the amount of porosity present in the composite body. Moreover, additives, whether used alone or in combination, (1) can be admixed with the permeable mass, (2) can be mixed or alloyed with the parent metal, (3) can be placed at an interface between the parent metal and the preform or mass of filler material, (4) or any combination of the aforementioned methods, to modify properties of the resultant composite body. Particularly, additives such as VC, NbC, WC, W.sub.2 B.sub.5, TaC, ZrC, ZrB.sub.2, SiB.sub.6, SiC, MgO, Al.sub.2 O.sub.3, ZrO.sub.2, CeO.sub.2, Y.sub.2 O.sub.3, La.sub.2 O.sub.3, MgAl.sub.2 O.sub.4, HfO.sub.2, ZrSiO.sub.4, Yb.sub.2 O.sub.3 and Mo.sub.2 B.sub.
    Type: Grant
    Filed: January 11, 1993
    Date of Patent: April 4, 1995
    Assignee: Lanxide Technology Company, LP
    Inventors: Terry D. Claar, Gerhard H. Schiroky, Kevin P. Pochopien, Vilupanur A. Ravi, James C. Wang, Ratnesh K. Dwivedi
  • Patent number: 5382405
    Abstract: A method of manufacturing a shaped article from a powdered precursor, wherein the components of the powdered precursor are subjected to a self-propagating high-temperature synthesis (SHS) reaction and are consolidated essentially simultaneously. The shaped article requires essentially no machining after manufacture.
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: January 17, 1995
    Assignee: Inland Steel Company
    Inventors: Kenneth F. Lowrance, II, Eric C. Knorr, William M. Goldberger, Daniel Boss, Doreen Edwards
  • Patent number: 5371049
    Abstract: A ceramic composite is disclosed which may be used as lightweight armor or for other impact or wear resisting purposes. The ceramic composite may comprise distinct phases of AlN and SiC; may be a solid solution of SiC; or may contain AlN or SiC, or both AlN and SiC as residual phase(s) in a solid solution matrix of SiC and AlN.
    Type: Grant
    Filed: January 9, 1989
    Date of Patent: December 6, 1994
    Assignee: FMC Corporation
    Inventors: Keith R. Moffett, John D. Morrow
  • Patent number: 5354536
    Abstract: A silicon carbide material is made following a procedure including hot pressing to provide a finished product having a microstructure with an optimal grain size of less than 7 micrometers. The material exhibits a dominant failure mode of intergranular fracture requiring significant energy for crack propagation. The method of manufacturing is cost-effective by allowing the use of "dirty" raw materials since the process causes impurities to segregate at multi-grain boundary junctions to form isolated pockets of impurities which do not affect the structural integrity of the material. End uses include use as protective projectile-resistant armor.
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: October 11, 1994
    Assignee: Cercom Inc.
    Inventor: Andre Ezis
  • Patent number: 5334561
    Abstract: A high pressure injection nozzle member is formed of a super hard alloy or a hard material of carbide series mainly composing of a tungsten carbide as, wherein the tungsten carbon is composed of grains each having a diameter of less than 1 .mu.m. At least one kind of carbide or solid solution of carbide selected from Ti, Ta, V, Cr, Mo, Hf, or Zr by a weight % of less than 10.0% is added. A binding material essentially consisting of at least one of iron group elements by weight % of 0.2 to 2.0% may be further added. The super hard alloy or a hard sintered material has a high abrasion proof property and has a hardness more than about HRA 94.0. Nitride or nitride solid solution may be utilized in place of carbide or carbide solid solution. The nozzle member is particularly suitable for an abrasive water jet.
    Type: Grant
    Filed: November 19, 1993
    Date of Patent: August 2, 1994
    Inventors: Shigetomo Matsui, Hiroyuki Matsumura, Yoshikazu Ikemoto, Yasuhiro Kumon, Shigeru Nakayama, Keiji Tsujita, Keisuke Fukunaga, Nobuhiro Kuribayashi, Kenichi Wakana
  • Patent number: 5330553
    Abstract: A sintered titanium-based carbonitride alloy contains hard constituents based on, in addition to Ti, W and/or Mo, one or more of the metals Zr, Hf, V, Nb, Ta or Cr in 5-30% binder phase based on Cobalt and/or nickel. The content of tungsten and/or molybdenum, preferably molybdenum in the binder phase is >1.5 times higher than in the rim and >3.5 times higher than in the core of adjacent hard constituent grains. The alloy is produced by a particular method.
    Type: Grant
    Filed: May 22, 1992
    Date of Patent: July 19, 1994
    Assignee: Sandvik AB
    Inventors: Gerold Weinl, Rolf G. Oskarsson, Per Gustafsson
  • Patent number: 5326525
    Abstract: A process is disclosed for fabricating a metal aluminide composite which comprises providing a metal aluminide, such as titanium aluminide, or a titanium aluminide alloy, and a reinforcing fiber material, such as silicon carbide fiber, and placing an interlayer or diffusion barrier layer in the form of a metal selected from the group consisting of silver, copper and gold, and alloys thereof, between the metal aluminide and the reinforcing fiber material. The interlayer metal can be a foil of the metal or in the form of a coating, such as a silver coating, on the reinforcing fiber material. The metal aluminide, the reinforcing fiber material, and the metal interlayer, e.g., in the form of a packet of a plurality of alternate layers of metal aluminide alloy and reinforcing fiber material, each layer being separated by the metal interlayer, is pressed and heated at an elevated temperature, e.g., ranging from about 900.degree. to about 1200.degree. C., at which diffusion bonding occurs.
    Type: Grant
    Filed: July 11, 1988
    Date of Patent: July 5, 1994
    Assignee: Rockwell International Corporation
    Inventor: Amit K. Ghosh
  • Patent number: 5314657
    Abstract: There is now provided a method of manufacturing a sintered body of titanium-based carbonitride alloy comprising hard constituents in 5-25% binder phase where the hard constituents contain, in addition to Ti, one or more of the metals V, Nb, Ta, Cr, Mo or W and the binder phase is based on cobalt and/or nickel by powder metallurgical methods, i.e., milling, pressing and sintering. The composition of the hard constituents is:0.88<a<0.96;0.04<b<0.08;0.ltoreq.c<0.04;0.ltoreq.d<0.04;0.60<f<0.73;0.80<x<0.90; and0.31<h<0.40.and the overall composition of the hard constituents phase is expressed by the formula:(Ti.sub.a,Ta.sub.b,Nb.sub.c,V.sub.d).sub.x (Mo.sub.e,W.sub.f).sub.y (C.sub.g,N.sub.h).sub.z.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: May 24, 1994
    Assignee: Sandvik AB
    Inventor: Ake Ostlund
  • Patent number: 5310605
    Abstract: A process for producing a ceramic-metal composite body exhibiting binder enrichment and improved fracture toughness at its surface. The process involves forming a shaped body from a homogeneous mixture of: (a) about 2-15 w/o Co or about 2-12 w/o Ni binder, (b) excess carbon, (c) optionally, 0 to less than 5.0 v/o B-1 carbides, and (d) remainder tungsten carbide. The mixture contains sufficient total carbon to result in an ASTM carbon porosity rating of C06 to C08 at the core of the densified body. The weight ratio of excess carbon to binder is about 0.05:1 to 0.037:1. The shaped body is densified in a vacuum or inert atmosphere at or above about 1300.degree. C. and slow cooled, at least to about 25.degree. below the eutectic temperature. Alternatively, the sintered body may be cooled to a holding temperature at or slightly above the eutectic temperature, isothermally held for at least 1/2 hr, and further cooled to ambient.
    Type: Grant
    Filed: August 25, 1992
    Date of Patent: May 10, 1994
    Assignee: Valenite Inc.
    Inventors: J. Gary Baldoni, II, Stephen L. Bennett
  • Patent number: 5275982
    Abstract: The present invention relates to a novel method of manufacturing a composite body, such as a ZrB.sub.2 --ZrC--Zr composite body, by utilizing a post-treatment technique which may improve the oxidation resistance of the composite body. Moreover, the invention relates to novel products made according to the process. The novel process modifies at least a portion of a composite body by exposing said body to a source of second metal.
    Type: Grant
    Filed: September 21, 1992
    Date of Patent: January 4, 1994
    Assignee: Lanxide Technology Company, LP
    Inventors: Terry D. Claar, William B. Johnson, Robert A. Rapp
  • Patent number: 5211766
    Abstract: Additions of carbon or tantalum ranging between about 0.1 to about 0.15 weight percent are added to an iron-rare earth metal permanent magnet alloy. The permanent magnet alloy contains the magnetic phase consisting of Fe.sub.14 Nd.sub.2 B (or the equivalent) tetragonal crystals, which is primarily based on neodymium and/or praseodymium, iron and boron. The isotropic melt-spun ribbons of the preferred alloy are characterized by generally improved magnetic properties. The anisotropic magnetic bodies formed from these ribbons are hot worked at temperatures substantially lower than the conventional alloy which does not contain the carbon or tantalum additions, with an improvement in magnetic properties observed.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: May 18, 1993
    Assignee: General Motors Corporation
    Inventor: Viswanathan Panchanathan
  • Patent number: 5173107
    Abstract: The invention relates to a composite hard metal body of hard material, a binder and embedded reinforcing material, as well as to a process for the production of the composite hard metal body by methods of powder metallurgy.In order to create a composite hard metal body with improved toughness under load, improved hardness and a lower fracture susceptibility, the invention proposes to build in monocrystalline, preferably needle-shaped and/or platelet-shaped reinforcing materials, coated with an inert layer with respect to the binder metal phase and consisting of borides and/or carbides, and/or nitrides and/or carbonitrides of the elements of Groups IVa or Va or mixtures thereof and/or coated monocrystalline reinforcing material of SiC, Si.sub.3 N.sub.4, Si.sub.2 N.sub.2 O, Al.sub.2 O.sub.3, ZrO.sub.2, AlN and/or BN.
    Type: Grant
    Filed: June 10, 1991
    Date of Patent: December 22, 1992
    Assignee: Krupp Widia GmbH
    Inventors: Klaus Dreyer, Hans Kolaska
  • Patent number: 5151247
    Abstract: The present invention is a method for densifying powder metallurgical parts to 100% theoretical density. The method comprises applying a high pressure of 0.1-100 MPa during sintering in a high pressure furnace at a temperature before which the liquid phase is formed and maintaining this pressure during the rest of the sintering cycle until the furnace has cooled to almost room temperature. The method achieves rapid, complete closure of the porosity which results in parts with close dimensional tolerances and practically no warpage.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: September 29, 1992
    Assignee: Sandvik AB
    Inventors: Bengt O. Haglund, Bengt N. During
  • Patent number: RE34180
    Abstract: Cemented carbide substrates having substantially A or B type porosity and a binder enriched layer near its surface are described. A refractory oxide, nitride, boride, and/or carbide coating is deposited on the binder enriched surface of the substrate. Binder enrichment is achieved by incorporating Group IVB or VB transition elements. These elements can be added as the metal, the metal hydride, nitride or carbonitride.
    Type: Grant
    Filed: September 9, 1988
    Date of Patent: February 16, 1993
    Assignee: Kennametal Inc.
    Inventors: Bela J. Nemeth, deceased, George P. Grab