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Patents
PM
PATENTS" USA 4,990,195 Heavy alloy penetrator of W 60%, Fe 9%, bal Ni, produced by sintering and controlled working has a W matrix with fine inclusions of a W-Ni-Fe compound. GTE Products Corp. 3 January, 1989; 5 February, 1991.
5,002,728 Sintered soft magnetic parts made by injection moulding and sintering a mixture of Fe and Si, Fe and FeSi, or two compositions of FeSi. Sumitomo Metal Mini KI~ 19 December, 1988; 26 March, 1991.
5,003,919 Process for stabilizing magnetic powder against corrosion involves heating in an oxidizing atmosphere in a rotating drum. Chisso Corp. 2 December, 1987; 2 April, 1991.
5,004,153 Apparatus for controlling the molten metal stream in atomization includes an induction coil that provides a magnetic 'funnel'. General Electric Co. 2 March, 1990; 2 April, 1991.
5,004,499 Sintered RE metaLFe-B p e r m a n e n t magnet p o w d e r for b o n d e d m a g n e t s c o n t a i n s an additive of lower melting point such as Al, Ga, Sn, etc. Union Oil Co Cal. 26 May, 1989; 2 April, 1991.
5,006,164
LITERATURE
REVIEW
5,007,956
Metallgesellschaft AG. 23 April, 1988; 23 April,
Camshaft assembly for IC engines made from sintered steel containing C, P, Mn, Si and 5-50% copper.
1991.
Nippon Piston Ring KK. 11 April, 1986; 16 April, 1991.
5,007,957 Mixtures of carbide powders and binder metal as a slurry with water and a wax before milling minimizes oxidation. GTE Products Corp. 10 September, 1990; 16 April, 1991.
High strength Sm transition element magnets having controlled grain size induced by specified heat-treatment and compacting steps.
5,011,514 Thermally stable abrasive body made from metalcoated abrasive particles, the metal being 4-30% by vol. of the total.
5,011,529 Catalyst s u p p o r t for car e x h a u s t system consisting of sintered porous A1 with A1203.
Stark Draper C Lab Inc. 9 June, 1988; 16 April, 1991.
Coming Inc. 14 March, 1989; 30 April, 1991.
5,008,071
Re metal B magnets made by liquid phase sintering of a mixture of powder made from ingot and a RS powder.
W heavy alloy with improved properties has Ni:Fe ratio increased to 8:2.
5,011,552
GTE Products Corp. 4 January, 1988; 16 April, 1991.
Tokin Corp. 18 May, 1987; 30 April, 1991.
5,009,704
Intermetallic compounds of AI and Ru with, opt. Sc and B, are sintered in argon to produce structural parts with high temperature hardness.
Process for the manufacture of jet engine parts from superalloy powders made by HIPping and specified heat treatment. Allied Signal Inc. 28 June, 1989; 23 April, 1991.
5,009,706 I~w cost anisotropic magnet made from powder containing Fe, B, Cu, Nd and/or Pr. Nippon Steel Corp. 4 August, 1989; 23 April, 1991.
5,011,554
General Electric Co. 26 December, 1989; 30 April, 1991.
5,013,611 Camshaft having a tubular steel shaft and sintered c a m ( s ) o f Fe-Cr alloy. Nippon Piston Ring KI~ 19 January, 1989; 7 June, 1991.
5,015,289 5,009,841
Kawasaki Steel KK 14 December, 1987; 9 April, 1991.
Addition of 2-30% of fine iron oxide powder to a mix of Fe and organic binder for injection moulding reduces de-waxing time.
5,006,493
BASF AG. 14 April, 1989; 23 April, 1991.
Binder material for metal or ceramic powders containing poly-ethyl-oxazolene gives higher green strength.
5,009,842
Injection moulded sintered parts made from mixtures of metal powder, short metal or carbon fibres, and binder. King Invest Co Ltd. 2 February, 1990; 14 May, 1991.
5,015,290
Dow Chemical Co. 31 March, 1986; 9 April, 1991.
High strength powder forgings made by impact forging of sintered compacts under closely defined conditions.
5,007,874
Michigan Tech Univ. 8 June, 1990; 23 April, 1991.
US Sec of the Army. 15 October, 1990; 16 April, 1991.
Mitsui Mining and Smelting. 5 October, 1988; 3{) April, 1991.
Norton Co. 11 July, 1989; 30 April, 1991.
5,007,972
High density injection moulded ferrous parts made from powder having a closely defined, narrow particle size range.
I~ng-life cathode for microwave devices made from W and lr powders mixed with an activator, ball milled, pressed and sintered.
5,011,510 Abrasive tools consisting of a sintered mixture of metal powder and diamond or CBN.
Cermet cutting tool made by sintering mixtures of ceramic, e.g. WC, and a ductile ingredient such as Ni aluminide. Dow Chemical Co. 12 October, 1989; 14 May, 1991.
5,010,050
5,015,294
Supported catalyst sheet or strip made by roll bonding metal powder to a support and sintering in a reducing atmosphere.
Composition for injection moulding consists of metal powder, hydrocarbon wax and fatty acid (oleic or stearic).
MPR October 1991 61
PM
GTE Products Corp. 4 April, 1990; 14 May, 1991.
LITERATURE
REVIEW
General Motors Corp. 22 September, 1989; 27 March, 1991.
5,015,304
Sandvik AB. 15 November, 1989; 22 May, 1991.
428,539
Sintered Re metal-B m a g n e t s having heavy lanthanide near grain boundaries. Union Carbide Co Cal. 30 October, 1989; 14 May, 1991.
423,627 Production of microcrystalline metal powder by the reduction of a metal salt in an inert organic solvent.
Composite sintered material for shaft bearings consists of a matrix of Fe or bronze in which hardmetal or ceramic particles are dispersed. Inter Electric AG. 6 July, 1988; 29 May, 1991.
5,015,307
Studienges Kohle MbH. 14 October, 1989; 24 April, 1991.
428,999
Corrosion resistant magnets made by sintering heat treated and pulverized alloy of RE metal (s), Fe, Co, Ni.
424,411
Binder for injection moulding consisting of polyvinyl acetate, polyethylene glycol or polyester.
Treatment of magnetic powders in a fluidized bed using a stream of hydrogen, silane and a diluent gas to passivate the surface.
Frauenhofer Ges. 24 November, 1989; 29 May, 1991.
Kawasaki Steel KK. 23 December, 1987; 14 May, 1991.
Kodak Pathe. 24 June, 1988; 2 May, 1991.
429,546
425,061
Ti (alloy) composite with high strength, hardness and wear resistance h a s Ti alloy matrix with a dispersion of TiB2.
5,016,348 Lightweight camshafts produced by isostatic p r e s s i n g p o w d e r e d c a m m a t e r i a l on to a prefabricated tubular shaft.
Hard materials for cutting tools, etc. made from Ti carbo-nitride bonded with an Fe group metal with, opt. other metals.
Dynamet Techn Inc. 29 July 1988; 5 June, 1991.
Sinterstahl. 10 October, 1988; 21 May, 1991. Richter V. 23 October, 1989; 2 May, 1991.
430,198
425,469
Permanent magnet based on RE metal, B, Co and/or Cr, etc. is given an electroless Ni or other coating for corrosion protection.
5,017,217 Reaction sintered current collector consisting of metal-ceramic mixtures.
tips
Eltech Systems Corp. 6 January, 1987; 21 May, 1991.
Sintered p e r m a n e n t magnets containing Fe, B, etc. have magnetic domains pinned by grain boundary elements. Bohler GmbH. 25 October, 1989; 2 May, 1991.
5,017,437 Production of clad articles by compaction of metal powders. Carpenter Tech Corp. 20 July, 1990; 21 May, 1991.
426,454 Joining of abrasive compacts to h a r d m e t a l support by passing a large electric current for a very short time.
Shin-Etsu Chem Co. 30 November, 1989; 5 June, 1991.
430,825 Sintered contact material has Ag matrix with dispersed particles of Ni-coated graphite and uncoated graphite. Merlin Gerin. 29 November, 1989; 5 June, 1991.
5,017,530 Material for use at high temperatures, e.g. in gas turbines, hot rolls, etc. consists of sintered Si3N4 containing Y203 and Al203. Tosoh Corp. 28 January, 1987; 21 May, 1991.
5,017,753 A p p a r a t u s for t h e p r o d u c t i o n of p a r t s by selective sintering of layers of metal powder by laser beam. Univ Texas System. 5 October, 1987; 21 May, 1991.
PATENTS: Europe ............ 418,299 Spray deposition onto a rotating receiver preconditioned by a plasma torch, the deposit and receiver then being HIPped.
De Beers Ind Diamond, 1 November, 1989; 8 May, 1991.
PATENTS" Japan
427,315 Zinc powder for alkaline batteries contains small quantities of Al RE metal(s), In, Bi and Pb, and is free from Hg. Acec Union Miniere. 1O November, 1989; 15 May, 1991.
427,375 Metal powder for moulding with a binder has defined particle size distribution with two peaks. Sumitomo Metal Mini KK. 17 October, 1989; 15 May, 1991.
427,379 Process for atomizing Ti for PM has an induction coil round the crucible/tundish to levitate and control the flow of molten metal.
3-033,762 S i n t e r i n g e q u i p m e n t esp. for solid s t a t e capacitors h a s two dewaxing chambers with different atmospheres and two sintering zones. Hitachi Condensers KK. 30 September, 1984; 30 July, 1990.
3-034,642B Bonded magnets made from RE metal/Co powder t h a t have been coated with a P-containing compound to prevent oxidation. Shinetsu Chem Ind KIL 17 August, 1983; 23 May, 1991.
3-035,361B
Osprey Metals Ltd. 7 February, 1989; 27 March, 1991.
Crucible Mat Corp. 9 November, 1989; 15 May, 1991.
Tool set for metal powder compaction has die and punch made of materials with differing coefficients of thermal expansion.
418,943
427,492
Sintered valve seat inserts made from tool steel powder mixed with graphite, Fe powder and S or metallic sulphide (s).
MA Al-based composite containing intermetallic phases including the alloying elements Nb, Ti a n d / a r Zr. Inco Alloys Int Inc. 30 August, 1990; 15 May, 1991.
Honda Motor Ind KK. 1 May, 1986; 28 May, 1991.
Brico Eng Ltd. 20 September, 1989; 23 March, 1991.
419,124 Stator for AC generator consisting of Fe powder bonded by a thermoplastic material.
62 MPR October 1991
428,491 Hardmetal cutting tool inserts given non-uniform compaction so that the cutting edges have higher density than the rest.
3-035,366 Sintered electrical contact material made from internally oxidized alloy powder of Ag with 1320% Bi, 0.1-5% Cd and 0.5-5% Sn. Tanaka Kikinzoku Kogyo. 18 May, 1984; 28 May, 1991.
PM
LITERATURE
REVIEW
3-035,367
from powder by CIP. MTU. 11 August, 1983; 5 June, 1991.
Sintered Ag-BiO contact material containing also 0.1-5% Cd, 0.5-5% Sn and 0.5-5% In.
3-038,829
Tanaka Kikinzoku Kogyo. 18 May, 1984; 28 May, 1991.
Manufacture of heat-resistant Ni alloy for jet engine parts from mixed elemental powders, alloy powder and yttria.
3-035,368 Sintered Ag-BiO contact material containing also 0.1-5% Cd and 1-5% Ti as oxides produced by internal oxidation. Tanaka Kikinzoku Kogyo. 18 May, 1984; 28 May, 1991.
3-036,304 Production of porous W, Mo or W-Mo alloy sheet for s e m i - c o n d u c t o r devices by e x t r u d i n g a mixture of powder, binder and solvent. Sumitomo Elec Ind KK. 3 February, 1983; 31 May, 1991.
1991.
3-041,542 Pump parts made by PM of a ferrous alloy containing Cr, W, Mo, with opt. Ni and Cu. Nippon Piston Ring KIL 24 February, 1983; 24 June, 1991.
Kagaku-Fijitsu-Cho Kinz. 6 November, 1986; 10 June, 1991.
3-038,830
3-041,561
Ni-based alloy for jet engines contains Co, Cr, W, Al, Ti, Ta, Hf, B and Zr, and is made as pre-alloyed powder.
Process for the production of mechanically alloyed powders on a commercial scale.
Kagaku-Fijitsu-Cho Kinz. 2 March, 1987; 10 June, 1991.
3-039,90B Sintered SiC, CBN, etc. made by explosive compaction inducing exothermic sintering.
Inco Alloys Int Inc. 18 June, 1985; 18 September, 1990.
3-041,562 Production of Re powder in sub-micron sizes by hydrogen reduction of gasified rhenium oxide. Nippon Mining KK. 6 June, 1986; 18 July, 1990.
3-036,305
New Mexico Tech Res. 21 June, 1985; 17 June, 1991.
3-041,569
Porous sheet of W, Mo or W-Mo alloy for semiconductors containing 0.02-2% of Fe group metal.
3-040,081
Sumitomo Elee Ind KK. 3 February, 1983; 31 May, 1991.
Production of anisotropic RE metal magnets by compacting powder m i x e d with resin in a magnetic field.
P r o d u c t i o n of Cr-Cu c o n t a c t m a t e r i a l by encapsulating Cr powder or porous sintered Cr body in Cu and heating above the melting point of Cu.
3-036,611 Permeable mould made from mixtures of ceramic and ferrous powders.
Tohoku Metal Ind Ltd. 23 April, 1984; 17 June, 1991.
3-040,100 Sinto Kogyo KK. 9 March, 1984; 3 June, 1991.
3-036,893
Corrosion resistant hard materials made by sintering mixtures of Ni, Cr, Mo and carbides of Ti, Ta, Nb and W.
Ag-based contact material made from internally oxidized powder containing 14-20% Bi, 0.1-5% Cd and 0.5-8% Sn.
Nippon Tungsten KK. 3 April, 1986; 17 June, 1991.
Tanaka Kikinzoku Kogyo. 18 May, 1984, 3 June, 1991.
Fuji Electric Mfg KK. 14 March, 1984; 18 July, 1990.
3-041,570 Manufacture of pore-free hard alloys, carbides or nitrides, by adding Fe oxide(s) and carbon to the powder mix. Sumitomo Elec Ind KK. 15 June, 1983; 18 July, 1990.
3-041,522
3-041,571
A p p a r a t u s for metal powder production by blowing gas into a bath of molten metal.
Contact material containing nitrides, graphite, Fe gp metal and Ag.
Nagaoka Gijutsu KAG. 9 October, 1984; 24 June,
Sumitomo Elec Ind KI~ 10 July, 1981; 18 July,
3-037,477 Process for the production of complex shapes
iiiiii!!!ii~!iiiiiiiili~,iiii~iiiiiiiii~i~iii!!!iiiiiiiiiii!i!i~i!!iiiiiii~ iil
:::: :
::JANUARY ISSUE
•
PM in automotive applications
MPR October 1991 63
PATENTS" USA 4,990,195 Heavy alloy penetrator of W 60%, Fe 9%, bal Ni, produced by sintering and controlled working has a W matrix with fine inclusions of a W-Ni-Fe compound. GTE Products Corp. 3 January, 1989; 5 February, 1991.
5,002,728 Sintered soft magnetic parts made by injection moulding and sintering a mixture of Fe and Si, Fe and FeSi, or two compositions of FeSi. Sumitomo Metal Mini KI~ 19 December, 1988; 26 March, 1991.
5,003,919 Process for stabilizing magnetic powder against corrosion involves heating in an oxidizing atmosphere in a rotating drum. Chisso Corp. 2 December, 1987; 2 April, 1991.
5,004,153 Apparatus for controlling the molten metal stream in atomization includes an induction coil that provides a magnetic 'funnel'. General Electric Co. 2 March, 1990; 2 April, 1991.
5,004,499 Sintered RE metaLFe-B p e r m a n e n t magnet p o w d e r for b o n d e d m a g n e t s c o n t a i n s an additive of lower melting point such as Al, Ga, Sn, etc. Union Oil Co Cal. 26 May, 1989; 2 April, 1991.
5,006,164
LITERATURE
REVIEW
5,007,956
Metallgesellschaft AG. 23 April, 1988; 23 April,
Camshaft assembly for IC engines made from sintered steel containing C, P, Mn, Si and 5-50% copper.
1991.
Nippon Piston Ring KK. 11 April, 1986; 16 April, 1991.
5,007,957 Mixtures of carbide powders and binder metal as a slurry with water and a wax before milling minimizes oxidation. GTE Products Corp. 10 September, 1990; 16 April, 1991.
High strength Sm transition element magnets having controlled grain size induced by specified heat-treatment and compacting steps.
5,011,514 Thermally stable abrasive body made from metalcoated abrasive particles, the metal being 4-30% by vol. of the total.
5,011,529 Catalyst s u p p o r t for car e x h a u s t system consisting of sintered porous A1 with A1203.
Stark Draper C Lab Inc. 9 June, 1988; 16 April, 1991.
Coming Inc. 14 March, 1989; 30 April, 1991.
5,008,071
Re metal B magnets made by liquid phase sintering of a mixture of powder made from ingot and a RS powder.
W heavy alloy with improved properties has Ni:Fe ratio increased to 8:2.
5,011,552
GTE Products Corp. 4 January, 1988; 16 April, 1991.
Tokin Corp. 18 May, 1987; 30 April, 1991.
5,009,704
Intermetallic compounds of AI and Ru with, opt. Sc and B, are sintered in argon to produce structural parts with high temperature hardness.
Process for the manufacture of jet engine parts from superalloy powders made by HIPping and specified heat treatment. Allied Signal Inc. 28 June, 1989; 23 April, 1991.
5,009,706 I~w cost anisotropic magnet made from powder containing Fe, B, Cu, Nd and/or Pr. Nippon Steel Corp. 4 August, 1989; 23 April, 1991.
5,011,554
General Electric Co. 26 December, 1989; 30 April, 1991.
5,013,611 Camshaft having a tubular steel shaft and sintered c a m ( s ) o f Fe-Cr alloy. Nippon Piston Ring KI~ 19 January, 1989; 7 June, 1991.
5,015,289 5,009,841
Kawasaki Steel KK 14 December, 1987; 9 April, 1991.
Addition of 2-30% of fine iron oxide powder to a mix of Fe and organic binder for injection moulding reduces de-waxing time.
5,006,493
BASF AG. 14 April, 1989; 23 April, 1991.
Binder material for metal or ceramic powders containing poly-ethyl-oxazolene gives higher green strength.
5,009,842
Injection moulded sintered parts made from mixtures of metal powder, short metal or carbon fibres, and binder. King Invest Co Ltd. 2 February, 1990; 14 May, 1991.
5,015,290
Dow Chemical Co. 31 March, 1986; 9 April, 1991.
High strength powder forgings made by impact forging of sintered compacts under closely defined conditions.
5,007,874
Michigan Tech Univ. 8 June, 1990; 23 April, 1991.
US Sec of the Army. 15 October, 1990; 16 April, 1991.
Mitsui Mining and Smelting. 5 October, 1988; 3{) April, 1991.
Norton Co. 11 July, 1989; 30 April, 1991.
5,007,972
High density injection moulded ferrous parts made from powder having a closely defined, narrow particle size range.
I~ng-life cathode for microwave devices made from W and lr powders mixed with an activator, ball milled, pressed and sintered.
5,011,510 Abrasive tools consisting of a sintered mixture of metal powder and diamond or CBN.
Cermet cutting tool made by sintering mixtures of ceramic, e.g. WC, and a ductile ingredient such as Ni aluminide. Dow Chemical Co. 12 October, 1989; 14 May, 1991.
5,010,050
5,015,294
Supported catalyst sheet or strip made by roll bonding metal powder to a support and sintering in a reducing atmosphere.
Composition for injection moulding consists of metal powder, hydrocarbon wax and fatty acid (oleic or stearic).
MPR October 1991 61
PM
GTE Products Corp. 4 April, 1990; 14 May, 1991.
LITERATURE
REVIEW
General Motors Corp. 22 September, 1989; 27 March, 1991.
5,015,304
Sandvik AB. 15 November, 1989; 22 May, 1991.
428,539
Sintered Re metal-B m a g n e t s having heavy lanthanide near grain boundaries. Union Carbide Co Cal. 30 October, 1989; 14 May, 1991.
423,627 Production of microcrystalline metal powder by the reduction of a metal salt in an inert organic solvent.
Composite sintered material for shaft bearings consists of a matrix of Fe or bronze in which hardmetal or ceramic particles are dispersed. Inter Electric AG. 6 July, 1988; 29 May, 1991.
5,015,307
Studienges Kohle MbH. 14 October, 1989; 24 April, 1991.
428,999
Corrosion resistant magnets made by sintering heat treated and pulverized alloy of RE metal (s), Fe, Co, Ni.
424,411
Binder for injection moulding consisting of polyvinyl acetate, polyethylene glycol or polyester.
Treatment of magnetic powders in a fluidized bed using a stream of hydrogen, silane and a diluent gas to passivate the surface.
Frauenhofer Ges. 24 November, 1989; 29 May, 1991.
Kawasaki Steel KK. 23 December, 1987; 14 May, 1991.
Kodak Pathe. 24 June, 1988; 2 May, 1991.
429,546
425,061
Ti (alloy) composite with high strength, hardness and wear resistance h a s Ti alloy matrix with a dispersion of TiB2.
5,016,348 Lightweight camshafts produced by isostatic p r e s s i n g p o w d e r e d c a m m a t e r i a l on to a prefabricated tubular shaft.
Hard materials for cutting tools, etc. made from Ti carbo-nitride bonded with an Fe group metal with, opt. other metals.
Dynamet Techn Inc. 29 July 1988; 5 June, 1991.
Sinterstahl. 10 October, 1988; 21 May, 1991. Richter V. 23 October, 1989; 2 May, 1991.
430,198
425,469
Permanent magnet based on RE metal, B, Co and/or Cr, etc. is given an electroless Ni or other coating for corrosion protection.
5,017,217 Reaction sintered current collector consisting of metal-ceramic mixtures.
tips
Eltech Systems Corp. 6 January, 1987; 21 May, 1991.
Sintered p e r m a n e n t magnets containing Fe, B, etc. have magnetic domains pinned by grain boundary elements. Bohler GmbH. 25 October, 1989; 2 May, 1991.
5,017,437 Production of clad articles by compaction of metal powders. Carpenter Tech Corp. 20 July, 1990; 21 May, 1991.
426,454 Joining of abrasive compacts to h a r d m e t a l support by passing a large electric current for a very short time.
Shin-Etsu Chem Co. 30 November, 1989; 5 June, 1991.
430,825 Sintered contact material has Ag matrix with dispersed particles of Ni-coated graphite and uncoated graphite. Merlin Gerin. 29 November, 1989; 5 June, 1991.
5,017,530 Material for use at high temperatures, e.g. in gas turbines, hot rolls, etc. consists of sintered Si3N4 containing Y203 and Al203. Tosoh Corp. 28 January, 1987; 21 May, 1991.
5,017,753 A p p a r a t u s for t h e p r o d u c t i o n of p a r t s by selective sintering of layers of metal powder by laser beam. Univ Texas System. 5 October, 1987; 21 May, 1991.
PATENTS: Europe ............ 418,299 Spray deposition onto a rotating receiver preconditioned by a plasma torch, the deposit and receiver then being HIPped.
De Beers Ind Diamond, 1 November, 1989; 8 May, 1991.
PATENTS" Japan
427,315 Zinc powder for alkaline batteries contains small quantities of Al RE metal(s), In, Bi and Pb, and is free from Hg. Acec Union Miniere. 1O November, 1989; 15 May, 1991.
427,375 Metal powder for moulding with a binder has defined particle size distribution with two peaks. Sumitomo Metal Mini KK. 17 October, 1989; 15 May, 1991.
427,379 Process for atomizing Ti for PM has an induction coil round the crucible/tundish to levitate and control the flow of molten metal.
3-033,762 S i n t e r i n g e q u i p m e n t esp. for solid s t a t e capacitors h a s two dewaxing chambers with different atmospheres and two sintering zones. Hitachi Condensers KK. 30 September, 1984; 30 July, 1990.
3-034,642B Bonded magnets made from RE metal/Co powder t h a t have been coated with a P-containing compound to prevent oxidation. Shinetsu Chem Ind KIL 17 August, 1983; 23 May, 1991.
3-035,361B
Osprey Metals Ltd. 7 February, 1989; 27 March, 1991.
Crucible Mat Corp. 9 November, 1989; 15 May, 1991.
Tool set for metal powder compaction has die and punch made of materials with differing coefficients of thermal expansion.
418,943
427,492
Sintered valve seat inserts made from tool steel powder mixed with graphite, Fe powder and S or metallic sulphide (s).
MA Al-based composite containing intermetallic phases including the alloying elements Nb, Ti a n d / a r Zr. Inco Alloys Int Inc. 30 August, 1990; 15 May, 1991.
Honda Motor Ind KK. 1 May, 1986; 28 May, 1991.
Brico Eng Ltd. 20 September, 1989; 23 March, 1991.
419,124 Stator for AC generator consisting of Fe powder bonded by a thermoplastic material.
62 MPR October 1991
428,491 Hardmetal cutting tool inserts given non-uniform compaction so that the cutting edges have higher density than the rest.
3-035,366 Sintered electrical contact material made from internally oxidized alloy powder of Ag with 1320% Bi, 0.1-5% Cd and 0.5-5% Sn. Tanaka Kikinzoku Kogyo. 18 May, 1984; 28 May, 1991.
PM
LITERATURE
REVIEW
3-035,367
from powder by CIP. MTU. 11 August, 1983; 5 June, 1991.
Sintered Ag-BiO contact material containing also 0.1-5% Cd, 0.5-5% Sn and 0.5-5% In.
3-038,829
Tanaka Kikinzoku Kogyo. 18 May, 1984; 28 May, 1991.
Manufacture of heat-resistant Ni alloy for jet engine parts from mixed elemental powders, alloy powder and yttria.
3-035,368 Sintered Ag-BiO contact material containing also 0.1-5% Cd and 1-5% Ti as oxides produced by internal oxidation. Tanaka Kikinzoku Kogyo. 18 May, 1984; 28 May, 1991.
3-036,304 Production of porous W, Mo or W-Mo alloy sheet for s e m i - c o n d u c t o r devices by e x t r u d i n g a mixture of powder, binder and solvent. Sumitomo Elec Ind KK. 3 February, 1983; 31 May, 1991.
1991.
3-041,542 Pump parts made by PM of a ferrous alloy containing Cr, W, Mo, with opt. Ni and Cu. Nippon Piston Ring KIL 24 February, 1983; 24 June, 1991.
Kagaku-Fijitsu-Cho Kinz. 6 November, 1986; 10 June, 1991.
3-038,830
3-041,561
Ni-based alloy for jet engines contains Co, Cr, W, Al, Ti, Ta, Hf, B and Zr, and is made as pre-alloyed powder.
Process for the production of mechanically alloyed powders on a commercial scale.
Kagaku-Fijitsu-Cho Kinz. 2 March, 1987; 10 June, 1991.
3-039,90B Sintered SiC, CBN, etc. made by explosive compaction inducing exothermic sintering.
Inco Alloys Int Inc. 18 June, 1985; 18 September, 1990.
3-041,562 Production of Re powder in sub-micron sizes by hydrogen reduction of gasified rhenium oxide. Nippon Mining KK. 6 June, 1986; 18 July, 1990.
3-036,305
New Mexico Tech Res. 21 June, 1985; 17 June, 1991.
3-041,569
Porous sheet of W, Mo or W-Mo alloy for semiconductors containing 0.02-2% of Fe group metal.
3-040,081
Sumitomo Elee Ind KK. 3 February, 1983; 31 May, 1991.
Production of anisotropic RE metal magnets by compacting powder m i x e d with resin in a magnetic field.
P r o d u c t i o n of Cr-Cu c o n t a c t m a t e r i a l by encapsulating Cr powder or porous sintered Cr body in Cu and heating above the melting point of Cu.
3-036,611 Permeable mould made from mixtures of ceramic and ferrous powders.
Tohoku Metal Ind Ltd. 23 April, 1984; 17 June, 1991.
3-040,100 Sinto Kogyo KK. 9 March, 1984; 3 June, 1991.
3-036,893
Corrosion resistant hard materials made by sintering mixtures of Ni, Cr, Mo and carbides of Ti, Ta, Nb and W.
Ag-based contact material made from internally oxidized powder containing 14-20% Bi, 0.1-5% Cd and 0.5-8% Sn.
Nippon Tungsten KK. 3 April, 1986; 17 June, 1991.
Tanaka Kikinzoku Kogyo. 18 May, 1984, 3 June, 1991.
Fuji Electric Mfg KK. 14 March, 1984; 18 July, 1990.
3-041,570 Manufacture of pore-free hard alloys, carbides or nitrides, by adding Fe oxide(s) and carbon to the powder mix. Sumitomo Elec Ind KK. 15 June, 1983; 18 July, 1990.
3-041,522
3-041,571
A p p a r a t u s for metal powder production by blowing gas into a bath of molten metal.
Contact material containing nitrides, graphite, Fe gp metal and Ag.
Nagaoka Gijutsu KAG. 9 October, 1984; 24 June,
Sumitomo Elec Ind KI~ 10 July, 1981; 18 July,
3-037,477 Process for the production of complex shapes
iiiiii!!!ii~!iiiiiiiili~,iiii~iiiiiiiii~i~iii!!!iiiiiiiiiii!i!i~i!!iiiiiii~ iil
:::: :
::JANUARY ISSUE
•
PM in automotive applications
MPR October 1991 63