Rhenium Base Patents (Class 420/433)
  • Publication number: 20150125338
    Abstract: Identifying a stable phase of a binary alloy comprising a solute element and a solvent element. In one example, at least two thermodynamic parameters associated with grain growth and phase separation of the binary alloy are determined, and the stable phase of the binary alloy is identified based on the first thermodynamic parameter and the second thermodynamic parameter, wherein the stable phase is one of a stable nanocrystalline phase, a metastable nanocrystalline phase, and a non-nanocrystalline phase.
    Type: Application
    Filed: March 12, 2012
    Publication date: May 7, 2015
    Inventors: Heather Murdoch, Christopher A. Schuh
  • Publication number: 20150057144
    Abstract: A bicontinuous non-porous microstructure comprising a refractory phase and a non-refractory phase, wherein the refractory phase substantially comprises one or more refractory elements and the non-refractory phase comprises a void filled by one or more materials that are different than a material comprising the non-refractory phase in a bicontinuous network from which the nanocomposite refractory material is formed and methods of making the same are disclosed.
    Type: Application
    Filed: August 26, 2013
    Publication date: February 26, 2015
    Applicant: The Johns Hopkins University
    Inventors: Jonah Erlebacher, Ian McCue
  • Publication number: 20140348203
    Abstract: Provided in one embodiment is a method of identifying a stable phase of an ordering binary alloy system comprising a solute element and a solvent element, the method comprising: determining at least three thermodynamic parameters associated with grain boundary segregation, phase separation, and intermetallic compound formation of the ordering binary alloy system; and identifying the stable phase of the ordering binary alloy system based on the first thermodynamic parameter, the second thermodynamic parameter and the third thermodynamic parameter by comparing the first thermodynamic parameter, the second thermodynamic parameter and the third thermodynamic parameter with a predetermined set of respective thermodynamic parameters to identify the stable phase; wherein the stable phase is one of a stable nanocrystalline phase, a metastable nanocrystalline phase, and a non-nanocrystalline phase.
    Type: Application
    Filed: May 20, 2014
    Publication date: November 27, 2014
    Applicant: Massachusetts Institute of Technology
    Inventors: Heather A. Murdoch, Christopher A. Schuh
  • Patent number: 8808473
    Abstract: An austenitic heat resistant alloy includes, by mass percent, C: 0.15% or less, Si: 2% or less, Mn: 3% or less, Ni: 40 to 60%, Co: 10.14 to 25%, Cr: 15% or more and less than 28%, either one or both of Mo: 12% or less and W: less than 0.05%, the total content thereof being 0.1 to 12%, Nd: 0.001 to 0.1%, B: 0.0005 to 0.006%, N: 0.03% or less, O: 0.03% or less, at least one selected from Al: 1.36% or less, Ti: 3% or less, and Nb: 3% or less, and the balance being Fe and impurities. The contents of P and S in the impurities are P: 0.03% or less and S: 0.01% or less. The alloy satisfies 1?4×Al+2×Ti+Nb?12 and P+0.2×Cr×B?0.035, where an element in the Formulas represents the content by mass percent.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: August 19, 2014
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Hiroyuki Hirata, Hirokazu Okada, Hiroyuki Semba, Kazuhiro Ogawa, Atsuro Iseda, Mitsuru Yoshizawa
  • Publication number: 20130155581
    Abstract: Recovery of a metal from scrap materials or other source materials containing two or more metals or other materials by iodization of the materials or parts of them to create multiple metal iodides of respective metals, separating the iodides and dissociating at least one of the iodides to recover its metal component.
    Type: Application
    Filed: July 3, 2012
    Publication date: June 20, 2013
    Applicant: ORCHARD MATERIAL TECHNOLOGY LLC
    Inventors: Lawrence F. McHugh, Leonid N. Shekhter, Yuri V. Blagoveshchenskiy
  • Publication number: 20120244032
    Abstract: In order to produce a coating on a substrate, the substrate is placed adjacent to a target. Material is cold ablated off the target by focusing a number of consecutive laser pulses on the target, thus producing a number of consecutive plasma fronts that move at least partly to the direction of said substrate. The time difference between said consecutive laser pulses is so short that constituents resulting from a number of consecutive plasma fronts form a nucleus on a surface of the substrate where a mean energy of said constituents allows the spontaneous formation of a crystalline structure.
    Type: Application
    Filed: October 4, 2010
    Publication date: September 27, 2012
    Applicant: PICODEON LTD OY
    Inventors: Reijo Lappalainen, Vesa Myllymäki, Jukka Häyrynen
  • Publication number: 20120148436
    Abstract: Nanomaterial preparation methods, compositions, and articles are disclosed and claimed. Such methods can provide nanomaterials with improved morphologies relative to previous methods. Such materials are useful in electronic applications.
    Type: Application
    Filed: November 4, 2011
    Publication date: June 14, 2012
    Inventors: David R. Whitcomb, William D. Ramsden, Doreen C. Lynch
  • Publication number: 20110229366
    Abstract: The present invention relates to a method of recovering rhenium (Re) and other metals from Re-bearing materials.
    Type: Application
    Filed: March 8, 2011
    Publication date: September 22, 2011
    Inventors: Eberhard LUEDERITZ, Ulrich R. Schlegel, Peter T. Halpin, Dale L. Schneck
  • Publication number: 20110194970
    Abstract: Nanocrystalline metal powders comprising tungsten, molybdenum, rhenium or niobium can be synthesized using a combustion reaction. Methods for synthesizing the nanocrystalline metal powders are characterized by forming a combustion synthesis solution by dissolving in water an oxidizer, a fuel, and a base-soluble, ammonium precursor of tungsten, molybdenum, rhenium, or niobium in amounts that yield a soichiometric burn when combusted. The combustion synthesis solution is then heated to a temperature sufficient to substantially remove water and to initiate a self-sustaining combustion reaction. The resulting powder can be subsequently reduced to metal form by heating in a reducing gas environment.
    Type: Application
    Filed: February 5, 2010
    Publication date: August 11, 2011
    Applicant: BATTELLE MEMORIAL INSTITUTE
    Inventors: John G. Frye, Kenneth Scott Weil, Curt A. Lavender, Jin Yong Kim
  • Publication number: 20100277051
    Abstract: A new Rhenium alloy usable for improving the performance of emission filaments used in mass spectrometers or other similar scientific instruments, which is made by adding low level concentrations of Yttrium Oxide to Rhenium of less than 10%. This new alloy has demonstrated superior performance characteristics compared to pure Rhenium for this purpose. Filaments made from the Yttria/Rhenium alloy exhibit the same voltage, current and emission properties as Rhenium but have the added advantage of greatly decreasing warping during use. The Rhenium alloy filaments are usable with various shapes and configurations including straight filaments, multiple coiled filaments and pin shaped filaments. Electron microscopy and microscopy studies verify that the Yttria/Rhenium material of the new alloy has a smaller grain size and increased strength when compared to pure Rhenium, which accounts for the enhanced structural strength.
    Type: Application
    Filed: March 24, 2010
    Publication date: November 4, 2010
    Inventors: John J. Manura, Christopher W. Baker, Ronald E. Shomo, II
  • Publication number: 20100087346
    Abstract: The present invention provides a composition that includes a rhenium-based alloy and a solid film lubricant. The rhenium-based alloy comprises an alloying substance including at least one constituent having a stronger affinity to oxygen than does Re when exposed to an atmosphere at a temperature of at least about 285° C.
    Type: Application
    Filed: March 31, 2006
    Publication date: April 8, 2010
    Inventors: William L. Giesler, Robbie J. Adams, Todd A. Langston, Margaret M. Floyd
  • Patent number: 7648590
    Abstract: A stent that is at least partially formed of a novel metal alloy, which novel metal alloy improves the physical properties of the stent.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: January 19, 2010
    Assignee: ICON International Systems, Inc.
    Inventors: Joseph G. Furst, Raymond W. Buckman, Jr., Udayan Patel
  • Patent number: 7648591
    Abstract: A medical device that is at least partially formed of a novel metal alloy, which novel metal alloy improves the physical properties of the medical device.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: January 19, 2010
    Assignee: ICON Medical Corp.
    Inventors: Joseph G. Furst, Udayan Patel, Raymond W. Buckman, Jr.
  • Patent number: 7648592
    Abstract: A stent that is at least partially formed of a novel metal alloy, which novel metal alloy improves the physical properties of the stent.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: January 19, 2010
    Assignee: ICON Medical Corp.
    Inventors: Joseph G. Furst, Raymond W. Buckman, Jr., Udayan Patel
  • Patent number: 7592073
    Abstract: A rhenium alloy is provided having from about 50 atomic % to 99 atomic % rhenium and a refractory compound particulates that are present in the alloy in an amount up to about 10 atomic %. The refractory compound comprises a nano-scale dispersion that is incorporated into the conventional rhenium structure. The nano-scale dispersion acts as grain boundary pins that result in a relatively fine grained, equiaxed structure that improves the mechanical properties of the alloy and helps to minimize the growth of large grains during operations at high temperatures. As a result, the amount of the rhenium used in high temperature applications may be reduced without sacrificing its high temperature and mechanical properties. Cryomilling in the presence of nitrogen may be used to prepare the rhenium alloy having a stable fine grain structure at high temperatures.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: September 22, 2009
    Assignee: The Boeing Company
    Inventors: Jerry W. Brockmeyer, Clifford C. Bampton
  • Publication number: 20090076589
    Abstract: A stent that is at least partially formed of a novel metal alloy, which novel metal alloy improves the physical properties of the stent.
    Type: Application
    Filed: November 17, 2008
    Publication date: March 19, 2009
    Inventors: Joseph G. Furst, Raymond W. Buckman, JR., Udayan Patel.
  • Patent number: 7488444
    Abstract: A medical device that is at least partially formed of a novel metal alloy, which novel metal alloy improves the physical properties of the medical device.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: February 10, 2009
    Assignee: ICON Medical Corp.
    Inventors: Joseph G. Furst, Udayan Patel, Raymond W. Buckman, Jr.
  • Patent number: 7452502
    Abstract: A stent that is at least partially formed of a novel metal alloy, which novel metal alloy improves the physical properties of the stent.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: November 18, 2008
    Assignee: ICON Medical Corp.
    Inventors: Joseph G. Furst, Raymond W. Buckman, Jr., Udayan Patel
  • Patent number: 7452501
    Abstract: A stent that is at least partially formed of a novel metal alloy, which novel metal alloy improves the physical properties of the stent.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: November 18, 2008
    Assignee: ICON Medical Corp.
    Inventors: Joseph G. Furst, Raymond W. Buckman, Jr., Udayan Patel
  • Publication number: 20080166596
    Abstract: A Re-based alloy material comprises >50 at. % Re and at least one alloying material selected from grain size refinement elements X which have an atomic radius larger or smaller than that of Re and a solid solubility <˜6 at. % in hcp Re at room or higher temperatures, and lattice matching elements Y which have an atomic radius larger or smaller than that of Re and form a solid solution in hcp Re at room or higher temperatures. The alloy material may further comprise at least one material selected from the group consisting of oxides, nitrides, and carbides. Targets comprising the Re-based alloy material are useful in sputter deposition of improved interlayers for obtaining optimally structured granular perpendicular magnetic recording layers.
    Type: Application
    Filed: October 23, 2007
    Publication date: July 10, 2008
    Applicant: HERAEUS INC.
    Inventors: Anirban DAS, Michael Gene Racine, Makoto Imakawa, Steven Roger Kennedy, Rikhit Arora
  • Publication number: 20080081214
    Abstract: A diffusion barrier alloy film has a diffusion barrier layer which has more excellent diffusion barrier properties than an Re—Cr alloy film, and can stand usage at higher temperatures (e.g., 1150° C. or higher). The diffusion barrier layer 18 is made of an Re—W alloy ? phase containing 12.5 to 56.5% of. W in terms of atomic composition and the remainder of Re excluding unavoidable impurities. A metal base 10 has a surface coated with a diffusion barrier layer 18. If required, the diffusion barrier layer 18 has a surface coated with a diffusion alloy layer 20 containing 10% or greater and less than 50% of Al, Cr, or Si in terms of atomic composition, providing a high-temperature apparatus member.
    Type: Application
    Filed: January 14, 2005
    Publication date: April 3, 2008
    Inventors: Toshio Narita, Hiroshi Yakuwa
  • Patent number: 7229510
    Abstract: A manganese alloy sputtering target characterized in that oxygen is 1000 ppm or less, sulfur is 200 ppm or less and a forged texture is provided, and a method for producing a forged manganese alloy target stably by eliminating the drawbacks of manganese alloy that it is susceptible to cracking and has a low rupture strength. A manganese alloy sputtering target which can form a thin film exhibiting high characteristics and high corrosion resistance while suppressing generation of nodules or particles is thereby obtained.
    Type: Grant
    Filed: February 18, 2002
    Date of Patent: June 12, 2007
    Assignee: Nippon Mining & Metals, Co., Ltd.
    Inventor: Yuichiro Nakamura
  • Patent number: 7205053
    Abstract: Disclosed is a Re alloy coating for diffusion barrier, such as a high-temperature equipment member, which comprises an atomic composition of 30% to less than 90% Re; and an atomic composition of 5% to less than 60% X (wherein X is at least one selected from the group consisting of Cr, Mo and W), with the remainder except for inevitable impurities being at least one selected from the group consisting of Ni, Fe and Co. Even if the alloy coating for diffusion barrier includes a diffusion layer containing at least one of the group consisting of Al, Si and Cr, a desired alloy composition of the alloy coating for diffusion barrier can be assured by a surface coating process and diffused components from the substrate while substantially preventing the diffusion of the elements of the diffusion layer during a homogenizing heat treatment. The alloy coating for diffusion barrier may include a Re-containing-alloy stress relief layer inserted between the film and the substrate.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: April 17, 2007
    Assignees: Japan Science and Technology Agency, Ebara Corporation
    Inventors: Toshio Narita, Shigenari Hayashi, Takayuki Yoshioka, Hiroshi Yakuwa
  • Patent number: 6902809
    Abstract: The present invention provides a method for preparing a rhenium-tantalum alloy with improved strength and ductility characteristics. The method includes mixing powders of rhenium and tantalum with a weight ration of approximately 97% rhenium to approximately 3% tantalum. The powdered blend is then compressed to a green state. The green compress of rhenium and tantalum is then sintered such that tantalum goes into solid solution with rhenium. The sintered material is then cold rolled. The cold rolling disperses oxides away from concentrations in the alloy grain boundaries. If desired, the alloy may then be annealed. The result is a rhenium-tantalum alloy that displays improved high temperature strength and ductility over pure rhenium materials. The present alloy is particularly suited to fabrication of rocketry components such as valve bodies, poppets, seats, and nozzles.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: June 7, 2005
    Assignee: Honeywell International, Inc.
    Inventor: Don L. Mittendorf
  • Patent number: 6899926
    Abstract: Disclosed is an alloy coating which can be advantageously applied to members for high temperature apparatuses so as to prolong the service life of the members. The alloy coating comprises an alloy. This alloy comprises: at least one member, as a base, selected from the group consisting of Re, Ir, Nb, Ta, Mo, and W; and at least one alloying element for imparting corrosion resistance. A method for forming the alloy coating, and a member for high temperature apparatuses, to which the alloy coating has been applied, are also disclosed.
    Type: Grant
    Filed: May 6, 2004
    Date of Patent: May 31, 2005
    Assignees: EBARA Corporation
    Inventors: Toshio Narita, Shigenari Hayashi, Hiroshi Yakuwa, Manabu Noguchi, Matsuho Miyasaka
  • Patent number: 6895991
    Abstract: An improved pneumatic valve and a missile with an improved thrust directional valve. In one embodiment, a refractory material lining for a pneumatic valve enables better valve operation and better valve performance. A thin-wall cylindrical sleeve of rhenium or other suitable refractory metal is located inside a cylinder. A valve piston may then travel within the refractory sleeve with greater reliability and better operation. The refractory sleeve cylinder lining can be subject to high temperatures at a rapid rate and remain operational. Under such a hostile environmental, including corrosive/erosive environments created by the passage of hot propellant gasses, the refractory cylinder sleeve has a more reliable operational life and is lighter in weight than conventional valves made entirely of refractory metals.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: May 24, 2005
    Assignee: Honeywell International, Inc.
    Inventor: George T. Woessner
  • Patent number: 6830637
    Abstract: A large-diameter tungsten-lanthana rod having an elongated grain structure substantially parallel to the longitudinal axis of the rod is described. The large diameter rod is produced by rolling at a temperature greater than 1400° C. and less than 1700° C. to achieve at least about a 40% reduction in cross-sectional area. The high strength of the longitudinally elongated grain structure is desirable for applications such as rocket nozzles.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: December 14, 2004
    Assignee: Osram Sylvania Inc.
    Inventors: Ricky D. Morgan, Thomas J. Dixon, Harry D. Martin, III
  • Patent number: 6830827
    Abstract: Disclosed is an alloy coating which can be advantageously applied to members for high temperature apparatuses so as to prolong the service life of the members. The alloy coating comprises an alloy. This alloy comprises: at least one member, as a base, selected from the group consisting of Re, Ir, Nb, Ta, Mo, and W; and at least one alloying element for imparting corrosion resistance. A method for forming the alloy coating, and a member for high temperature apparatuses, to which the alloy coating has been applied, are also disclosed.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: December 14, 2004
    Assignees: Ebara Corporation
    Inventors: Toshio Narita, Shigenari Hayashi, Hiroshi Yakuwa, Manabu Noguchi, Matsuho Miyasaka
  • Patent number: 6773663
    Abstract: An alloy and metal matrix composite (MMC) based on a refractory metal such as rhenium resists oxidation by the inclusion of alloying substances with affinity for oxygen or other oxidizing substances. Rhenium enjoys excellent high temperature strength but oxidizes at a much lower temperature. This reduces its desirability for hot, stressed environments. The addition of substances, such as soluble metals, that attract oxygen may form a protective oxide layer over the remaining portion of the rhenium-alloy part or piece. Such soluble alloying constituents may include chromium, cobalt, nickel, titanium, thorium, aluminum, hafnium, vanadium, silicon, aluminum, and yttrium. The addition of second phase fiber or particulates such as carbides of silicon, tungsten, titanium and/or boron provides additional wear resistance in the formation of a resulting metal matrix composite (MMC).
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: August 10, 2004
    Assignee: Honeywell International, Inc.
    Inventor: Robbie J. Adams
  • Patent number: 6749803
    Abstract: An alloy based on a refractory metal such as rhenium resists oxidation by the inclusion of alloying substances with affinity for oxygen or other oxidizing substances. This alloy has excellent high temperature strength and will resist oxidation. The alloy includes oxidation resistant substances, such as soluble metals, that attract oxygen and may form a protective oxide layer over the remaining portion of the rhenium-alloy part or piece. Such soluble alloying constituents may include chromium, cobalt, nickel, titanium, thorium, aluminum, hafnium, vanadium, silicon, aluminum, and yttrium.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: June 15, 2004
    Assignee: Honeywell International, Inc.
    Inventor: Robbie J. Adams
  • Patent number: 6746782
    Abstract: A barrier coating is disclosed, containing about 15 atom % to about 95 atom % chromium; and about 5 atom % to about 60 atom % of at least one of rhenium, tungsten, and ruthenium. Nickel, cobalt, iron, and aluminum may also be present. The barrier coating can be disposed between a metal substrate (e.g., a superalloy) and an oxidation-resistant coating, preventing the substantial diffusion of various elements at elevated service temperatures. A ceramic overcoat (e.g., based on zirconia) can be applied over the oxidation-resistant coating. Related methods for applying protective coatings to metal substrates are also described.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: June 8, 2004
    Assignee: General Electric Company
    Inventors: Ji-Cheng Zhao, Melvin Robert Jackson
  • Publication number: 20030223903
    Abstract: Pressure powder metallurgy process for consolidating refractory or rhenium alloys using a reduced temperature and elevated pressure. Rhenium metal has high temperature strength and wear resistance but has a very high melting point as a pure metal and thus is difficult to use as a coating for many alloys having lower melting points. The reduced temperature and elevated pressure alloying process of the rhenium allows it to be used as a coating for other metal alloys, such as nickel and steel alloys, providing some high temperature and wear resistance due to the properties of the rhenium material in the coating.
    Type: Application
    Filed: September 13, 2002
    Publication date: December 4, 2003
    Inventor: Robbie J. Adams
  • Publication number: 20030206823
    Abstract: An alloy based on a refractory metal such as rhenium resists oxidation by the inclusion of alloying substances with affinity for oxygen or other oxidizing substances. This alloy has excellent high temperature strength and will resist oxidation. The alloy includes oxidation resistant substances, such as soluble metals, that attract oxygen and may form a protective oxide layer over the remaining portion of the rhenium-alloy part or piece. Such soluble alloying constituents may include chromium, cobalt, nickel, titanium, thorium, aluminum, hafnium, vanadium, silicon, aluminum, and yttrium.
    Type: Application
    Filed: May 3, 2002
    Publication date: November 6, 2003
    Inventor: Robbie J. Adams
  • Publication number: 20030206824
    Abstract: An alloy and metal matrix composite (MMC) based on a refractory metal such as rhenium resists oxidation by the inclusion of alloying substances with affinity for oxygen or other oxidizing substances. Rhenium enjoys excellent high temperature strength but oxidizes at a much lower temperature. This reduces its desirability for hot, stressed environments. The addition of substances, such as soluble metals, that attract oxygen may form a protective oxide layer over the remaining portion of the rhenium-alloy part or piece. Such soluble alloying constituents may include chromium, cobalt, nickel, titanium, thorium, aluminum, hafnium, vanadium, silicon, aluminum, and yttrium. The addition of second phase fiber or particulates such as carbides of silicon, tungsten, titanium and/or boron provides additional wear resistance in the formation of a resulting metal matrix composite (MMC).
    Type: Application
    Filed: May 3, 2002
    Publication date: November 6, 2003
    Inventor: Robbie J. Adams
  • Patent number: 6127047
    Abstract: High temperature alloys resistant to degradation and oxidation are provided. In accordance with preferred embodiments, alloys comprising from about 0.1 to about 50 atomic percent silicon, from about 10 to about 80 atomic percent aluminum, and at least one metal selected from the group consisting of chromium, iridium, rhenium, palladium, platinum, rhodium, ruthenium, osmium, molybdenum, tungsten, niobium and tantalum are formed. Shaped bodies and structural members comprising such alloys are also described as are methods for their fabrication.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: October 3, 2000
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: Wayne L. Worrell, Kang N. Lee
  • Patent number: 6039920
    Abstract: A process for making iron, cobalt and/or nickel base alloys containing rhenium. The process involves melting together the components that form the alloys, at least one of the components being a rhenium master alloy having 30 to 70 wt % rhenium, then casting the resultant melt and allowing the melt to solidify. Possible difficulties such as the formation of rhenium heptoxide are avoided by using a master alloy containing (i) rhenium and (ii) iron, cobalt and/or nickel, instead of sintered rhenium as the rhenium source during the melting step.
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: March 21, 2000
    Assignee: W. C. Heraeus GmbH & Co. KG
    Inventors: Michael Koch, Wulf Kock, David Francis Lupton, Friedhold Scholz
  • Patent number: 5730792
    Abstract: Thick opaque ceramic coatings are used to protect delicate microelectronic devices against excited energy sources, radiation, light, abrasion, and wet etching techniques. The thick opaque ceramic coating are prepared from a mixture containing tungsten carbide (WC), tungsten metal (W), and phosphoric anhydride, i.e., phosphorous pentoxide (P.sub.2 O.sub.5), carried in an aqueous alkanol dispersion of colloidal silica and partial condensate of methylsilanetriol. The coating is pyrolyzed to form a ceramic SiO.sub.2 containing coating. A second coating of plasma enhanced chemical vapor deposited (PECVD) silicon carbide (SiC), diamond, or silicon nitride (Si.sub.3 N.sub.4), can be applied over the thick opaque ceramic coating to provide hermeticity. These coatings are useful on patterned wafers, electronic devices, and electronic substrates. The thick opaque ceramic coating is unique because the methyl silsesquioxane resin is resistant to etching using wet chemicals, i.e., acids such as H.sub.3 PO.sub.4 and H.sub.
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: March 24, 1998
    Assignee: Dow Corning Corporation
    Inventors: Robert Charles Camilletti, Loren Andrew Haluska, Keith Winton Michael
  • Patent number: 5626973
    Abstract: A magneto-optical layer sensitive to a light with a short wavelength such as 400 to 550 nm and having a perpendicular magnetization can be deposited on a substrate at a room temperature. The magneto-optical layer is of a tertiary polycrystalline having a composition, for example, Co.sub. aPt.sub.b Ru.sub.c where 20.ltoreq.a.ltoreq.70, 10.ltoreq.b.ltoreq.70, 10.ltoreq.c.ltoreq.60 and a+b+c=100 or Co.sub.d Pt.sub.e Re.sub.f where d.ltoreq.80, 5.ltoreq.e, 5.ltoreq.f, 40.ltoreq.4d-5f and d+e+f=100, and has an easy magnetization axis perpendicular to the main surface of the layer.
    Type: Grant
    Filed: August 4, 1994
    Date of Patent: May 6, 1997
    Assignee: Teijin Limited
    Inventors: Yoshihiko Takeda, Tomokazu Umezawa, Kiyoshi Chiba
  • Patent number: 4432794
    Abstract: A hard alloy including at least one hard phase and a binary or multicomponent binder metal alloy, in which the hard substance comprises a finely dispersed, homogeneous distribution in the binder metal. The hard phase comprises a carbide of a Group IVb, Vb or VIb transition metal, and the binder metal alloy comprises a solid alloy of a Group IVb, Vb or VIb transition metal, with Re, Ru, Rh, Pd, Os, Ir, or Pt.
    Type: Grant
    Filed: July 17, 1981
    Date of Patent: February 21, 1984
    Assignee: Kernforschungszentrum Karlsruhe GmbH
    Inventor: Helmut Holleck
  • Patent number: 4390368
    Abstract: A free flowing plasma spray powder of substantially spherical particles having substantially smooth surfaces and of uniform composition consisting essentially of about 4 to about 6 percent by weight rhenium with the balance being tungsten.
    Type: Grant
    Filed: April 1, 1981
    Date of Patent: June 28, 1983
    Assignee: GTE Products Corporation
    Inventor: David L. Houck
  • Patent number: 4329174
    Abstract: A nickel alloy for spark plug electrodes consisting essentially of, by weight percent,about 0.2 to 3% Siabout 0.5% Mn or lessat least two metals selected from the group consisting ofabout 0.2 to 3% Crabout 0.2 to 3% Al andabout 0.01 to 1% Yand the balance nickel.
    Type: Grant
    Filed: September 7, 1979
    Date of Patent: May 11, 1982
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Tsuneo Ito, Junichi Kagawa