Literature

367,068 Capacitor grade Ta powder contains 50-100 ppm of Si, and 100-500 ppm P.

NRC Inc. November 1, 1988; June 9, 1990.

368,082 Mo powder suitable for spray coating has a surface coating of oxide produced by beating in an atmosphere of CO2.

Starck H.C. November 8, 1988; June 16, 1990.

368,336 Cutting tool with good wear resistance and toughness in interrupted cutting consists of carbo-nitride of Ti with W, Mo, Ta, Nb, Hf and/or Zr, with binder of Ni or Co.

Mitsubishi Metal KK. November 11, 1988; June 16, 1990.

368,860 Vacuum switch contact material with longer life based on Cu with Cr, and up to 40 at% of Te or Se.

Siemens AG. July 28, 1987; May 23, 1990.

369,097 Sintered permanent magnet composition having high magnetic anisotropy with annealing after sintering.

Asahi Kasei Kogyo. November 14, 1988; May 23, 1990.

369,114 W rod especially for welding electrodes made from W powder mixed with 1.8 - - 2.2% of LaO.

Ges Wolfram Ind mbH. October 17, 1988; May 25, 1990.

369,928 Metal matrix composite made by mixing matrix metal powder with a non-reacting powder and infiltrating with molten matrix metal.

Lanxide Tech Co LP. November 10, 1988; May 23, 1990.

370,618 Forming a porous alloy coating on prostheses by applying a slurry of the alloy powder with a binder, drying and sintering.

Mixalloy Ltd. November 3, 1988; May 30, 1990.

370,701 Production of metal flake for pigment of plasma deposition of a thin film on a dielectric substrate, then stressing the film.

Deposition Sci Ind Inc. November 21, 1988; May 30, 1990.

370,939 Production of fine particles of Nd, Fe, B, by chemical reaction in an aqueous emulsion.

Univ de Santiago. November 24, 1988; May 30, 1990.

370,940 Metal matrix composites made by infiltrating a body of the filler material and another metal powder with the matrix metal with, opt an infiltration enhancer.

Lanxide Techn Co. November 10, 1988; May 30, 1990.

4,891,078 Sintered RE magnets made from mixtures of magnetic powder with a sintering aid and 0.1-2% of an oxide, nitride or carbide.

Union Oil Co, March 30, 1984; January 2, 1990.

4,892,579 Amorphous alloy parts manufactured from elemental powder mix, the powders being produced by adiabatic expansion of an inert gas stream containing the metal as vapour.

Dow Chemical Co, April 21, 1988; January 9, 1990.

4,892,581 Dispersion-strengthened Cu containing Cu oxide has good mechanical strength with little loss of conductivity.

US Dept of Energy, April 4, 1989; January 9, 1990.

4,894,088 Metal matrix composite made from fibre or powder-reinforced particulates.

Kobe Steel KK, December 16, 1986; January 16, 1990.

4,894,090 Pre-alloyed powder of a binder metal with hard particles for the manufacture of cutting tools.

Santrade Ltd, September 12, 1985; January 16, 1990.

4,894,158 Tubular filter elements made from SS powders 0.100-0.355 mm diameter extruded and sintered.

Kirin Brewery KK, September 11, 1986; January 16, 1990.

4,895,607 FeNdB magnet alloys made from amorphous powder containing a small amount of a boride of Zr, Ti, or Ta.

Kubota KK. July 25, 1988; January 23, 1990.

4,895,770

Hardmetal coated with a layer of boro-nitride and a boron-diffusion barrier layer consisting of TiC and/or TiCN.

Schwarzkopt Dev Corp. August 31, 1987; January 23, 1990.

4,895,815 Sintered A1 titanate made from a mixture of A1203 and TiO2.

Feldmuhle AG. February 26, 1987; January 23, 1990.

4,897,110 Compound powder of, eg, Ag and CdO made by atomizing a solution of the metal salts into a hot reactor.

Domier Systems GmbH. July 2, 1986; January 30, 1990.

4,897,111 Gas atomization system using high pressure liquefied gas produces uniform and pure fine particles.

Leybold AG. September 9, 1987; January 30, 1990.

4,897,130 Permanent magnets produced by PM from amorphous powder of RE Meval, Co, B, with opt. Fe.

US Philips Corp. February 26, 1985; January 30, 1990.

724 MPR October 1990

Review

4,898,613 FeBRe metal magnet powder with particle size 1-20 ftm produced by reduction diffusion treatment with calcium.

Sumitomo Spec Metal KK. March 6, 1986; February 6, 1990.

4,898,635 FeBRE metal magnets produced by liquid phase sintering of a mixture of ingot-based powder and a RS powder.

Tokin Corp. May 18, 1987; February 6, 1990.

4,898,749 Process for coating Co powder with AI oxide by making a slurry with an AI compound, evaporating and heating.

GTE Products Corp. January 3, 1989; February 6, 1990.

4,900,355 Production of high purity metal powder by centrifugal atomization in a closed vessel, in vacuo or inert gas.

Miyagi Nat College. January 30, 1987; February 13, 1990.

4,900,398 Ti alloys for aerospace components are chemically milled in an aqueous solution containing HF and chlorate.

General Motors Corp. June 19, 1989; February 13, 1990.

4,900,587 Production of FeA1 alloy powder coated with A1203 using a hydro lysab le l iquid AI compound.

GTE Products Corp. January 3, 1989; February 13, 1990.

4,900,590 Production of A1203 coating on Fe powder using a hydrolysable liquid A1 compound.

GTE Products Corp. January 3, 1989; February 13, 1990

4,900,635 Manufacture of turbine discs using a rotating mould containing the powdered alloy, followed by H1Ping.

Williams Int Corp. February 9, 1989; February 13, 1990.

4,901,784 Design of gas atomizer to produce an inclined spray pattern for spray deposition.

Olin Corp. March 29, 1989; February 20, 1990.

4,902,357 Sintered permanent magnets given a surface film of oxide and/or nitride for corrosion protection.

Namiki Precision. June 27, 1986; February 20, 1990.

4,902,361 Bonded RE metal-(Nd and/or Pr)0 FeB magnets made from melt-spun powder.

General Motors Corp. May 9, 1983; February 20, 1990.

4,902,395 TiCN-based cutting tool with layers of TiC, TiN, TiCN.

Mitsubishi Kinzoku, November 26, 1986; February 20, 1990.

4,902,471 Powder for the production of hardmetal made by attritor milling of a slurry of carbide, binder metal, and wax.

GTE Products Corp. September 11, 1981; February 20, 1990.

4,902,652 Sintered diamond compact made from particles coated with transition metal and B or Si.

Agency of Ind Sci Tech. July 10, 1987; February 1990.

4,904,302 Rotor for compressor consists of sintered FeMoCu alloy with the surface pores sealed by steam treatment.

Nippon Piston Ring KK. November 20, 1987; February 27, 1990.

4,904,311 Manufacture by atomization of very fine powders of solders.

Electroplat ing Eng. January 14, 1988; February 27, 1990.

4,904,537 Composite bearing strip made by Ni plating a steel strip, and depositing on it a layer of leaded-bronze powder which is then sintered and compacted.

Federal Mogul Corp. November 28, 1983; February 27, 1990.

4,904,538 Single step canning of metal powder prior to compaction by HIP.

Net Aero and Space Admin. March 21, 1989; February 27, 1990.

4,905,899 Apparatus for the gas atomization of metals has metal stream and gas nozzles on oscillating rotors to provide a stable spray pattern.

Osprey Metals Ltd. October 22, 1988; March 6, 1990.

4,906,430 Ti-based composite for aerospace applications has multi-layer structure of a matrix on to which is pressed a powder mix of Ti alloyed with TiB2.

Dynamet Tech Inc. July 26, 1988; March 6, 1990.

4,906,528 Composite elements for drill bit has CBN sandwiched between layers of W or Ti alloy.

Soc Ind Combustible. July 7, 1988; March 6, 1990.

4,907,731 Supe rc onduc t i ng mate r i a l s made inexpensively from powder compacted by shock waves. A range of compositions is claimed.

US Dept of Energy. October 14, 1987; March 13, 1990.

4,908,076 Sintered magnets based on Fe,B,RE metal - - Nd, Pr, Ce - - have high coercive force.

Yamaha Corp. April 28, 1984; March 13, 1990.

4,908,106 Production of coated metal or ceramic particles by electroplating in a specially designed apparatus.

MPR October 1990 725

Literature Review.

Nisshin Steel Co. April 15, 1988; March 13, 1990.

4,909,841 Production of high density articles, esp. electrical contacts, from powder placed in an evacuated pan with deformable top and then hot pressing.

Westinghouse Elec Corp. June 30, 1989; March 20, 1990.

4,909,843 Sintered alloy with good wear resistance contains Ni 1-5%, Cu 1-3%, Mo 0.3-1%, P 0.3-0.6%, C 1-2.5%, bal. Fe.

Etab Supervis. October 4, 1986; March 20, 1990.

4,909,865 Ferro-magnetic powders with dense oxide coating of uniform thickness by mixing powder with organic solvent and heating in oxygen-containing gas.

Chisso Corp. August 24, 1987; March 20, 1990.

4,910,098 Powder mix for r epa i r ing supera l loy components contains two Ni-based alloys of different m.pts and, opt. elemental Ni.

Avco Corp. September 9, 1988; March 20, 1990.

4,911,756 Sintered CBN having a binder containing A1, carbide and nitride of Ti, and, opt. transition metal and W. Used for cutting tools.

Sumitomo Elec Ind KK. December 28, 1985; March 27, 1990.

4,911,882 Fe, B RE metal magnets produced by dispersing powder in a fluid, orientating in a magnetic field, compacting and sintering.

SPS Techn Inc. February 8, 1989; March 27, 1990.

4,911,989 Coated hardmetal cutting tools.

Sumitomo Elec Ind KK. October 31, 1988; March 27, 1990.

4,913,731 Fine grained W alloy particles made by evaporation and reduction of an aqueous solution of ammonium metatungstate and salts of Ni, Fe, and/or Cu.

GTE Products Corp. October 3, 1988; April 3, 1990.

4,913,737 Production of thin sheet by mixing alloy powder - - eg FeSi - - with an organic binder, extruding and sintering.

Hitachi Metal KK. July 30, 1985; April 3, 1990.

4,913,738 Compos i t e body with high thermal conductivity and quick thermal response consists of porous sintered SiC, the voids being filled with Si.

Ibiden Co Ltd. Dec 25, 1987; April 3, 1990.

4,913,739 High strength steel parts made from powder mix of FeSi, FeMn, Fe, and graphite by liquid phase sintering.

Kemforschungs Karlesruhe. May 22, 1982; April 3, 1990.

4,913,745 Fe, B, RE metal magnets made from RS ribbon converted into flake.

Tokin Corp. October 16, 1987; April 3, 1990.

4,915,605 Production of dense parts of complex shape in A1 al loy hea t ing a powder compact , immersing it in a bed of pressure-transmitting particles, and applying uniaxial pressure.

Ceracon Inc. May 11, 1989; April 10, 1990./

4,915,728 Production of Fe-Co filaments by atomizing and d e c o m p o s i n g a so lu t ion of Co octa-carbonyl and Fe penta-carbonyl.

GAF Chemicals Corp. October 3, 1988; April 10, 1990.

4,915,729 Production of flake powders by RS during gas atomization, the droplets being thrown against an agitated bed of beads.

Batelle Memorial Inst. April 16, 1985; April 10, 1990.

4,915,733 Very fine grained pore-free sintered products made from mixtures of fine elemental powders of Mo, Re, W, with binder metal.

Starck H.C.. January 31, 1988; April 10, 1990.

4,915,734 Hardmetal with improved toughness made of bonded carbonitride including carbide or nitride whiskers.

Sandvik AB. April 29, 1987; April 10, 1990.

4,915,735 Wear parts for IC engines made by sintering Cr Fe C alloy mixed with CaF2. May contain also Mo, Nb, W, or V.

Sumitomo Elec Ind KK. March 6, 1987; April 10, 1990.

4,915,748 A1 alloy for structural purposes made by PM from RS particulates contains Cr, Zr, and Mn.

Alcan Int. September 3, 1982; April 10, 1990.

5,915,891 Production of non-circular permanent magnets by extrusion of a charge of particulate material.

Crucible Materials. November 27, 1987; April 10, 1990.

4,915,905 Compos i t e mate r i a l s made by rapid solidification of atomized molten exothermic reaction products.

Martin Marietta Corp. September 26, 1988; April 10, 1990.

4,917,778 Corrosion protection of sintered NdBFe magnets by electrodeposition of low stress nickel on the activated surfaces.

Johoku Riken Kogyo. May 21, 1989; April 17, 1990.

4,917,857 Production of hollow metal or ceramic spheres from a suspension of powder in an organic binder in a fluidized bed.

Nordeutsche Affinerie. July 22, 1987; April 17, 1990.

4,917,859 Process for removal of binder from injection moulded articles in a vacuum furnace.

726 MPR October 1990

Review

Mitsubishi Steel Mfg KK. September 6, 1989; April 17, 1990.

2/00428 Electrical contact material made from powder mix of Ag with Ni (10-20%) and Zr (0.05-8%).

Matsushita Electric Works. January 31, 1982; January 8, 1990.

2/00809 Contact material for vacuum, circuit breakers based on Cu with Mo and Ta or Nb. May be made by PM or by infiltration.

Mitsubishi Denki KK. November 20, 1984; January 9, 1990.

2/001201 W wire manufacture starting with a mixture of normal - - 2.5 to 3.5tam powder and a coarser powder. Strength of compact is increased.

Tokyo Tungsten KK. January 28, 1982; January 10, 1990.

2/001202 Process for sintering ferrous of Cu-base materials dsing a lubricant and a sintering aid.

Nippon Seiko KK. May 11, 1981; January 10, 1990

2/001204 Articles made of metal powder bonded with high molecular weight acrylic polymer.

Nitro Elec Ind KK. February 24, 1984; January 10, 1990.

2/001205 Sintered metal articles made from mixtures of two metal powders of different m.pt. and a polymeric binder.

Honda Giken Kogyo. June 19, 1984; January 10, 1990.

2/001881 Ti composite with porous surface layer made by sintering a Ti alloy with Mg, the Mg being subsequently removed by evaporation.

Permelec Denkyoku K. November 20, 1985; January 16, 1990.

2/004641 Ta powder production for electrical capacitors by Na reduction of potassium tantalate fluoride.

Cabotsupermetal KK. June 10, 1985; January 30, 1990.

2/004644 Production of sintered material eg Ag/CdO by plating a porous metal base, treating in a gas, and sintering.

Matsushita Elec Works. February 26, 1981; January 30, 1990.

2/004645 Apparatus for the production of rapidly solidified powders.

Kubota KK. March 26, 1986; January 30, 1990.

2/004646 Improved process for the production of Ta or Nb powder involves continuous or incremental injection of the raw material compound into a reactor.

Cabot Corp. March 4, 1987; January 30, 1990.

2/004666 Wrought contact material made from mixtures of powders of Cu and Ga nitride in amount between 1 and 20%.

Tanaka Kikinzoku Kogyo. May 20, 1982; January 30, 1990.

2/004667 Wrought contact material made from mixtures of powders of Cu and P nitride - - 1 - - 15%.

Tanaka Kikinzoku Kogyo. May 27, 1982; January 30, 1990.

2/004668 Wrought contact material made from mixtures of powders of Cu and Ca nitride - - 1 - - 15%.

Tanaka Kikinzoku Kogyo. May 28, 1982; January 30, 1990.

2/004669 Wrought contact material made from mixtures of powders of Cu and Mg nitride-- 1 - - 15%.

Tanaka Kikinzoku Kogyo. May 28, 1982; January 30, 1990.

2/004670 Wrought contact material made from mixtures of powders of Cu and Ge nitride - - I - - 20%.

Tanaka Kikinzohu Kogyo. May 28, 1982; January 30, 1990.

2/004671 Wrought contact material made from mixtures of powders of Cu and Ba nitride - - 1 - - 15%.

Tanaka Kikinzoku Kogyo. May 28, 1982; January 30, 1990.

2/004643 Metal powder for the manufacture of bearings etc. treated with a titanate coupling agent.

Fukuda Kinzoku Haku. February 5, 1985; January 30, 1990.

2/O06371 Rocker arm tip made of steel containing C, Cr, Mo, Nb, Mn, has a layer of Ni plated on the surface.

MitsubishiMetal KK. July 31,1984;Febmary 8,1990.

2/006803 Sintered material for punching dies etc. has a high m. pt. metal embedded in a superhard alloy.

Silveroi KK. September5,1985;Febmary14, 1990.

2/006805 Acicular Fe powder for magnetic recording made by reaction of an aq. solution of an Fe salt and salts of Si, Cr, Ni, and Mg.

Toda Kogyo KK. January31,1984; February 14,1990.

2/006816 Contact material made from oxides of Cd, Sn, and In in a matrix of Cu alloy with at least one of Fe, Co, Cr.

Tanaka Kikinzoku. February 28, 1987, February 14,1990.

2/O06817 Sintered contact material is an alloy of Cu with Fe, Co, Cr, with dispersed oxides of Zn, Sn, and In.

Tanaka Kikinzoku. February 28, 1981; February14,1990.

MPR October 1990 727