Abstract: A method for making aerospace face seal rotors reinforced by rhenium metal, alloy, or composite in combination with silicon carbide or other ceramic. The resulting rotor also is disclosed. Ceramic grains, preferably silicon carbide (SiC), are mixed with powdered metallic (PM) binder that may be based on a refractory metal, preferably rhenium. The mixture is applied to a rotor substrate. The combined ceramic-metal powder mixture is heated to sintering temperature under pressure to enable fusion of the ceramic in the resulting metal-based substrate. A load may then be applied under an elevated temperature. The resulting coated rotor can exhibit high hot hardness, increased durability and/or high hot wear resistance, as well as high thermal conductivity.

Abstract: The present invention provides a conductive adhesive and a packaging structure that can keep moisture-proof reliability even when a multipurpose base metal electrode is used. A conductive adhesive according to the present invention includes first particles having a standard electrode potential that is equal to or higher than a standard electrode potential of silver, and second particles having a standard electrode potential lower than a standard electrode potential of silver. A metal compound coating having a potential higher than that of metal particles as the first particles can be formed on a surface of an electrode having a potential lower than that of the metal particles.

Abstract: A porous structural material having a solid shape with a curved surface of which the dimensional accuracy is high and the uses are wide is produced. The porous structural material is made form metallic chips containing at least one kind of ingredients, and comprises a solid-shaped body having a smooth and curved surface, the solid-shaped body being reformed by compacting a plate-shaped intermediate product in the hot state, the product being a molding with heating under a pressure while being highly electrified.

Abstract: An adhesive composition is provided for bonding two or more different members which can give a bonded material having excellent heat resistance characteristics while inhibiting breakage of the materials to be bonded by reducing the expansion coefficient, the Young's modulus and the proof stress value. A method for bonding two or more different members using the adhesive composition, and a composite member comprising two or more different members bonded by the above method can be provided by the adhesive composition which comprises a hard solder and a mixture of at least two fine particle materials differing in wettability with the hard solder and which is controlled in expansion coefficient, Young's modulus and proof stress value.

Abstract: A material wire for producing wear-resistant and tribologically favorable surface coatings from a supereutectic Al/Si alloy by thermal spraying. The material wire is a filling wire that has a sheath made of metallic aluminum and a filling made of one or more additional alloy components.

Abstract: A swash plate for a swash plate compressor, wherein aluminum alloy containing 12 to 60% of Si and, as required, 0.1 to 30% of Sn is sprayed onto the iron or aluminum base plate of the swash plate compressor to form a seizure-resisting and abrasion-resisting surface layer dispersed with granulated Si.

Abstract: A wrapped slide bearing bushing consists of a composite bushing material including a metal bearing layer, a porous support layer sintered thereon, and a PTFE-based sliding layer, forming the sliding surface of an associated sliding member, said sliding layer also filling the pores of said support layer, and including at least 60 vol % of PTFE, 15-25 volume percent of a metal filler, preferably lead, and optionally 8-12 volume percent of PVDF. To obtain a low coefficient of friction, only varying in a narrow range over a long time period, said slide bearing bushing is formed such that the sliding layer includes 1-3 volume percent of carbon fibers, said carbon fibers being oriented substantially in a preferred direction relative to said composite bushing material, while the relative movement of said bearing bushing and said associated sliding member is substantially transverse to said preferred direction.

Abstract: The present invention relates to a synchronizer ring having an annular body which has a sliding region, the sliding region being provided with a wear-resistant tribological coating. According to the invention, it is provided for the tribological coating to be a thermally sprayed coating which contains a maximum of approximately 40% by weight of solid lubricant.

Abstract: The seizure resistance of an Al-based flame-sprayed layer formed on the swash plate of a swash-plate type comressor is increased to such a level comparable to that of a flame-sprayed bronze layer. The Al-based flame-sprayed layer of the present invention contains: from 12 to 60% of Si and granular Si particles dispersed in the matrix thereof, and at least one dispersing phase of graphite carbon, amorphous carbon and carbon, the crystallizing degree of which is between the graphite carbon and amorphous carbon, and MoS2.

Abstract: A plate shaped compression mold, a process for producing the same and a process for making laminate therewith. The plate-shaped compression mold for producing sheet laminate including synthetic resin with a metal coating on at least one surface thereof has a surface for contacting the metal coating of the sheet laminate, which surface has a Rockwell C hardness of higher than about 44 and a thermal coefficient of linear expansion which differs from that of the metal coating by not more than about 2.5×10−6/K, thereby substantially preventing warping or wrinkling of the metal coating during the compression molding process.

Abstract: There is provided a copper-based sliding alloy excellent in wear resistance and anti-seizure property. A phase of 2 to 30 wt. % lead is dispersed in the copper alloy. This lead phase contains 0.1 to 6 vol. % hard particles such as SiC, SiO2, Si3N4, Al2O3, TiC, WC and TiN having an average particle size of 5 to 25 &mgr;m. Because hard particles are included in the lead phase, wear resistance is excellent and anti-seizure property is improved. The lead phase, which is soft, serves as a cushion and the attack on a mating member by hard particles is reduced. Further, the falling-off of lead is minimized because the lead phase also includes the hard particles.

Abstract: A tribological coating made of a copper-free highly hypereutectic aluminum/silicon alloy and/or of a copper-free aluminum/silicon composite material composed such that fine silicon primary crystals and/or silicon particles, intermetallic phases, and oxides form as hard particles during the production of the layers in the atmospheric thermal spraying method and/or are anchored in the structure. The surface of the coating can be machined economically by short-chipping using conventional tools, so that additional alloy elements such as copper for forming additional intermetallic phases such as Al2Cu can be eliminated. This is significant because conventional AlSi cylinder liners in reciprocating engines pose problems in conjunction with certain fuels because of their copper content.

Abstract: A method of on site application of an erosion resistant coating. When deposited on the surface of a metallic substrate, the coating comprises hard ferroboride phases bound with a ductile metallic phase. The ductile metallic phase is selected from metals which have a low affinity for oxygen. The preparation and composition of a cored wire adapted for use in application of the erosion resistant coatings are also disclosed.

Abstract: A hollow monofilament of a high temperature spinnable thermoplastic such as Polyetheretherketone (PEEK) which is substantially hollow by up to about 80% by volume and has an outer diameter in the range from about 0.07 to 0.80 mm. is used in the construction of braiding in substitution for solid monofilaments with the advantage of lower cost and increased abrasion resistance.

Abstract: A hard metal or cermet body, especially as a cutting insert, has a WC content in the hard phase making up at least 10% and at most 96% thereof and three layers or zones between the interior of the body and the surface formed by the heat treatment to which the sinterable body is subjected. In the outermost layer hard material with limited binder content can be formed underlain by an intermediate layer of a substantially pure WC--Co composition, the innermost layer having a tungsten content falling to the value in the body interior and a binder phase and Group IVa and Group Va metal which increased progressively to the levels in the body interior.

Abstract: A product and a process for producing a matrix and a tool for use in abrasive or cutting applications including a base tool structure which may be armed with a plurality of triangular or conically shaped structures 24B consisting of abrasive particles 32 bonded together in a braze metal 38. The structures 24B may be prepared in a manner which provides a selectable rake angle. Rake angles including negative 46, neutral 46' and positive 46" may be produced. The process is accomplished by diffusing magnetizable abrasive particles on a release mechanism which has been placed on a reusable fixture 10 consisting of a plurality of balls 16 secured to a magnetized surface 14. The particles 32 stack to form structures 24 which are then encapsulated in a braze paste 26. The axis of the structures 24 is aligned with the applied magnetic field. The cones are symmetrical if the magnetic field emanates perpendicularly from the magnetized surface.

Abstract: A new family of chromium boride coatings having excellent adhesive wear and corrosion resistance is disclosed. The coatings comprise hard, ultrafine, chromium boride particles dispersed in a metal matrix, the particles having an average particle size of less than one micron and constituting less than about 30 volume percent of the coating, the balance being metal matrix. The metal matrix may be composed of nickel or a nickel base alloy containing a metal selected from the group consisting of chromium, silicon and iron. The coatings may be prepared by a process which comprises depositing a mechanically blended powder mixture of chromium metal or a chromium alloy or mixture of both, and a boron-containing alloy onto a substrate and then heat treating the as-deposited coating. The heat treatment effects a diffusion reaction between the deposited elements resulting in the formation of ultrafine particles of chromium boride dispersed in a metal matrix.

Abstract: A base metal repair tape includes a first layer formed braze alloy bonded together with fibrillated polytetrafluoroethylene, a second layer formed from powdered base metal comprising oxygen-sensitive superalloy bonded together by fibrillated polytetrafluoroethylene and a third layer comprising a brazing alloy bonded together by fibrillated polytetrafluoroethylene. This is used to repair base metal by placing the first layer on the base metal and brazing the base metal powder so that the brazing alloy melts and diffuses into the base metal powder bonding it to the surface of the article. This permits the braze powder to be bonded to the base metal surface with minimal distance between the base powder particles. The number of alternating layers of base metal and braze alloy can be increased to increase the thickness of the repair. This can also be used to form small intricate parts.

Abstract: A new family of transition metal boride coatings having excellent wear and corrosion resistance is disclosed. The coatings comprise hard, ultrafine, transition metal boride particles dispersed in a metal matrix, the particles constituting from about 30 to about 90 volume percent of the coating, the balance being metal matrix. The average size of the particles ranges from about 0.5 to about 3.0 microns. The metal matrix contains at least one metal selected from the group consisting of nickel, cobalt and iron. The coatings may be prepared by a process which comprises depositing a mechanically blended powder mixture of a transition metal and a boron-containing alloy onto a substrate and then heat treating the as-deposited coating. The heat treatment effects a diffusion reaction between the deposited elements resulting in the formation of ultrafine particles of a transition metal boride dispersed in the metal matrix. The coating can be deposited onto the substrate using any of the known deposition techniques.

Abstract: The heat resistant stainless steel wire/strip comprises a stainless steel thin wire/strip containing, in addition to chrome, at least one of nickel, aluminum and yttrium. The stainless steel thin wire/strip is covered with a covering layer formed of nickel group alloy particles containing aluminum covered with ceramic particles or chrome alloy particles containing aluminum covered with ceramic particles. The stainless steel thin wire/strip with the covering layer is applied with heat treatment in vacuum at a temperature of 1100 to 1300.degree. C., the alloy particles are deposited on the stainless steel thin wire/strip, and the alloy particles and the ceramic particles of the covering layer are bonded to each other. The ceramic particles of the covering layer is 1 micron or less of an average particle diameter and contain at least one of aluminum, silicone, magnesium, zirconium, barium and titanium.

Abstract: A disclosed gradient function material is produced by molding and thereafter firing a slurry which contains a plurality of groups of particles having different specific gravities. The plurality of groups of particles include at least a first group of particles and a second group of particles. The first group of particles comprises a group of non-metal particles having a specific gravity ranging from about 3 to 7 and a maximum particle diameter equal to or smaller than a deflocculation limit, said non-metal particles being made of one or more materials selected from the group consisting of an oxide, a carbide, a nitride, and an oxynitride. The second group of particles comprises a group of metal particles having a specific gravity which is about 1.5 times the specific gravity of said first group of particles, and particle diameters distributed across the deflocculation limit.

Abstract: A product and method are disclosed for constructing a powdered metal component from two or more discreet powdered metals in which one or more of the powdered metals is weldable following compaction while the other powdered metal is not A die having two die parts which together define a die cavity therebetween corresponding in shape to the desired metal component is first partially filled with one of the powdered metals and the remainder of the die cavity is then filled with the other powdered metal. The die parts are then compressed together to form the pressed component which, after removal from the die, is sintered. The weldable powdered metal is either powdered iron or powdered steel having a carbon content less than about 0.6% by weight carbon. Conversely, the other powdered metal is powdered steel or iron or alloyed, or mixtures thereof, having a carbon content typically greater than 0.6% by weight for enhanced hardness of the part.

Abstract: A material for use in the production of an alloy having excellent corrosion resistance and abrasion resistance is provided. The material includes a cored wire formed from at least a pipe of matrix metal, which is at least one member selected from an Fe-base alloy, a Co-base alloy, and a Ni-base alloy. A VC powder having a particle diameter of 10 .mu.m or less is filled into the pipe. Also provided is a material for use in the production of an alloy having excellent corrosion resistance and abrasion resistance. The material includes a powder mixture containing at least a matrix metal, which is at least one member selected from an Fe-base alloy, a Co-based alloy and a Ni-base alloy, and a VC powder having a particle diameter of 10 .mu.m or less.

Abstract: The present invention provides a ceramic based composite powder and a method for applying the composite powder using a H.V.O.F. gun to form a self-lubricating coating for metal parts. The composite powder and coating are comprised of a ceramic powder, a metal powder, and a solid lubricant powder.

Abstract: A thermal spray process for producing a MCrAlY-based coating wherein M is selected from the group consisting of iron, cobalt, nickel and mixtures thereof and wherein the oxygen in the fuel-oxidant mixture of the thermal spray process converts a substantial portion of the yttrium component to Y.sub.2 O.sub.3, a minor portion of the aluminum component to Al.sub.2 O.sub.3, and the Y.sub.2 O.sub.3 and Al.sub.2 O.sub.3 are present in an amount of less than 15 volume percent of the coating.

Abstract: Methods for making, methods for using and articles comprising ferromagnetic cermets, preferably cemented carbides and more preferably tungsten carbide, having at least two regions exhibiting at least one property that differs are discussed. The multiple-region cermets are particularly useful in wear applications. The cermets are manufactured by juxtaposing and densifying at least two powder blends having different properties (e.g., differential carbide grain size or differential carbide chemistry or differential binder content or differential binder chemistry or differential magnetic saturation or any combination of the preceding). Preferably, a first region of the cermet comprises a first hard component having a prescribed binder content and a first magnetic saturation and a second region, juxtaposing or adjoining the first region, comprising a second binder content different than the binder content of the first region and a second magnetic saturation different than that of the first region.

Abstract: A thermal spray powder for producing high hardness, low friction, wear resistant coatings on friction surfaces, comprising a blend of an agglomerated molybdenum/dimolybdenum carbide powder and a self-fluxing NiCrFeBSi alloy powder.

Abstract: A base metal repair tape includes a first layer formed from powdered base metal bonded together by fibrillated polytetrafluoroethylene and a second layer comprising a brazing alloy bonded together by fibrillated polytetrafluoroethylene. This is used to repair base metal by placing the first layer on the base metal and brazing the base metal so that the brazing alloy melts and diffuses into the base metal powder bonding it to the surface of the article. This permits the braze powder to be bonded to the base metal surface with minimal distance between the base powder particles.

Abstract: An article with a high temperature superalloy body having a directionally oriented microsuucture and a structural discontinuity, such as a crack, or surface erosion or wear portion, is repaired, to provide a repaired article, using a mixture of Ni base ahoy powders. One powder includes a careful balance of the temperature depressants Si and B. In the one powder, Si is included in the range of about 0.05-2.2 wt. % to provide about 0.02-1.3 wt. % Si in a repaired portion as bonded with the article. In that same powder, B is include in the range of about 0.2-1.2 wt. % to provide about 0.08-0.7 wt. % in that repaired portion. In the repair method, the repaired portion can be provided, when shorter brazing times are used, with improved mechanical properties by diffusing the brazed alloy and aging the repaired structure in the range of about 1600.degree.-1700.degree. F. for a time in the range of about 1-16 hours.

Abstract: A brake rotor having a brake ring, first and second opposing braking surfaces, and inner and outer peripheral surfaces connecting the braking surfaces. A plurality of apertures are disposed through the brake ring and extend between the two braking surfaces. A ceramic coating, for providing thermal insulation, is disposed at least on the two braking surfaces.

Abstract: Molybdenum disilicide base materials and methods for producing them are described. Mixtures of MoSi.sub.2 powder and other powders including SiO.sub.2, Si.sub.3 N.sub.4, SiC and Mo.sub.5 Si.sub.3 are plasma sprayed. Another embodiment which involves oxidation of MoSi.sub.2 is also disclosed. The resistant materials have particular utility as coatings for Nb alloys.

Abstract: There is disclosed a composite slide member which suppresses the exposure of a porous metal layer even when the amount of cutting from a surface of the slide member increases, thereby enhancing an anti-seizing property without adversely affecting a rear resistance. The composite slide member includes a back plate, and a slide layer including a porous metal layer with a porosity of 50% to 80% and a composite synthetic resin composition impregnated and coated in pores of the porous metal layer. The porous metal layer is joined to a surface of the back plate. The porous metal layer is formed by sintering metal powder without applying pressure thereto, and an apparent density of the metal powder is 20% to 40% of its theoretical density. The porous metal and the composite synthetic resin are dispersed on a sliding surface of the slide layer in a substantially mixed condition.

Abstract: A method for impregnating a metal product with a hard wear-resistant surface area comprises providing a wear-resistant layer in the form of a sintered sheet having at least one "pin" integrally attached onto a surface of the sheet. This wear-resistant layer is attached onto the sand core and a metal melt is cast so as to produce the final product. This method can be used to produce a variety of metal products although cast iron, and in particular, ductile iron are preferred. Moreover, this process can effectively employ any of the hard phases which can be sintered, e.g., tungsten carbide, chromium carbide, and the like. Preferably, both the sheet and the "pins" are made from the same mixture of a wear-resistant material, an organic binder, and at least one plasticizer.

Abstract: A consumable brazing encapsulate is used for joining aluminum to metal surfaces, e.g. aluminum, copper, brass or steel surfaces, by brazing. The encapsulate comprises a mixture of particles of an eutectic forming metal selected from the group consisting of silicon, germanium, copper and zinc and particles of a brazing flux encapsulated in a layer or layers of aluminum or its alloys, said eutectic forming metal and flux being present in the following parts by weight per 100 parts by weight of the total aluminum in the encapsulate: (a) 7 to 15 parts of silicon and 7 to 45 parts of flux; (b) 25 to 120 parts of germanium and 100 to 250 parts of flux; (c) 40 to 70 parts of copper and 20 to 100 parts of flux; (d) 1300 to 2400 parts of zinc and 1000 to 2000 parts of flux; such that when the encapsulate is placed between aluminum surfaces to be joined and is heated, the eutectic forming metal and the encapsulating aluminum are totally converted in situ into an eutectic filler metal for joining the aluminum surfaces.

Abstract: An article of manufacture has as its basic structure a piece of a titanium aluminide, such as gamma (TiAl) or alpha-2 (Ti3Al), desirably in the shape of an aircraft gas turbine component. A thermal barrier coating system overlies at least a portion of the surface of the piece of titanium aluminide. The thermal barrier coating system includes a metallic bond coat layer, preferably in the form of a layer of a nickel-based alloy no more than about 0.005 inches thick, that contacts the piece of titanium aluminide, and a ceramic thermal barrier coating layer, preferably a stabilized zirconia such as yttria-stabilized zirconia, overlying the bond coat.

Abstract: The crack-resistant compound sleeve roll having a shell portion made of a sintered alloy and a core portion made of steel is produced by (a) charging an alloy powder consisting essentially, by weight, of 1.0-3.5% of C, 2% or less of Si, 2% or less of Mn, 10% or less of Cr, 3.0-15.0% of W, 2.0-10.0% of Mo and 1.0-15.0% of V, the balance being substantially Fe and inevitable impurities, into a metal capsule disposed around a roll core; (b) after evacuation and sealing, subjecting the alloy powder to a HIP (hot isostatic pressing) treatment at 1100.degree.-1300.degree. C. to form a shell portion; (c) after removing the metal capsule, subjecting the sintered shell portion to a heat treatment having hardening at 1140.degree.-1220.degree. C. and annealing at 540.degree.-620.degree. C.; and (d) chamfering edge portions of the roll on both axial ends thereof such that a boundary of the shell portion and the core portion exists in a chamfered surface.

Abstract: A metallic regenerator seal is provided having multi-layer coating comprising a NiCrAlY bond layer, a yttria stabilized zirconia (YSZ) intermediate layer, and a ceramic high temperature solid lubricant surface layer comprising zinc oxide, calcium fluoride, and tin oxide. Because of the YSZ intermediate layer, the coating is thermodynamically stable and resists swelling at high temperatures.

Abstract: In this invention, a cutting tool comprises two layers of hard sintered compact of cBN. The first sintered compact layer comprises about 75-98% by volume of cBN and a first binder material. The first binder material comprises from about 1 to out 40% by weight of Al. The second sintered compact layer comprises from about 40 to about 65% by volume of cBN and a second binder material. The second binder material comprises about 2 to about 30% by weight of Al. The first sintered compact layer is bonded to the second sintered compact layer. This composite material is bonded directly or indirectly to a tool holder to form a cutting tool. The first sintered compact layer constitutes a rake face of the cutting tool.

Abstract: A composite sliding member includes a metal wire mesh or expanded metal impregnated and covered with a composition of 0.1-50% by volume of one or more of PFA, FEP and EPE, and 0.1-50% by volume of at least one of oxybenzoyl polyester, polyphenylene sulfide, thermosetting resin, metal lubricant, metal oxide, composite metal oxide, metal sulfide, metal fluoride, carbon-based self lubricant, fiber material, and ceramics, with the remainder being substantially PTFE.

Abstract: A surface hardened aluminum part having excellent heat resistance and abrasion resistance obtained by forming, on the surface of an aluminum base material, an alloy layer that has a uniform composition and uniform hardness, being free from cracks. An aluminum alloy powder made of aluminum and metals each of which forms an intermetallic compound of high hardness with aluminum is prepared. This aluminum alloy powder is supplied onto the aluminum base material and the aluminum or aluminum alloy contained in the aluminum base material is alloyed with the aluminum alloy powder using a high-density energy heat source to form an alloy layer. The alloy layer thus formed has an intermetallic compound of high hardness uniformly distributed throughout the layer so that the hardness of the alloy layer is uniform and cracking is unlikely to occur.

Abstract: A Cu-Pb system composite bearing has three layers including a backing metal, a bearing alloy layer formed on the backing metal, and an overlay formed on the bearing alloy layer. The Cu-Pb bearing alloy contains 2 to 10% Ni and 0.05 to 1.0% B. An example of the composition of the Cu-Pb system bearing alloy consists of 0.5 to 8% Sn, 15 to 30% Pb, 0.2% or less P, 2 to 10% Ni, 0.05 to 1.0% B and the balance of Cu and unavoidable impurities. The Cu-Pb bearing alloy must have a hardness over HV80. Ni and B contained in the bearing alloy decrease the affinity of the Cu-Pb bearing alloy for tin in the overlay of a tin-containing lead alloy. The corrosion resistance of the bearing is improved by plating the both surfaces of the composite bearing with Sn, Pb or an alloy thereof.

Abstract: A spray powder for thermal spraying onto a substrate to provide a hardfacing, and a part with such hardfacing on the surface thereof, that is corrosion-resistant and abrasion-resistant. The spray powder comprises between about 75 to about 90 weight percent of tungsten carbide. The powder further comprises between about 10 and 25 weight percent of a nickel-based alloy, which includes Mo, and optionally, includes one or more of Fe, C, Cr, Mn, Co, Si and W.

Abstract: A copper powder-free friction material which is made by sintering and intended for friction surfaces of couplings or brakes contains powdery and/or granular metallic and non-metallic components, at least 50% by weight of the non-ferrous heavy metal component being brass powder.

Abstract: This invention relates to an improved ballistic metallic armor and a method f producing same. The object of this invention is accomplished by utilizing composite metallic materials made up of two but preferably three or more layers of different metals or alloys. The arrangement of the layers are made so that the front face is a hard brittle material (Rockwell C-60) designed to shatter the steel penetrator and the hardness of the layers should decrease from front to back.

Abstract: A coating for a metallic substrate has a metallic bond coat, a metallic seal coat and a centrally disposed layer of ceramic material. Transition layers comprising a controllably positioned mixture of metallic and ceramic materials are interposed, respectively, between the bond coat and the central layer of ceramic material, and between the seal coat and the central layer of ceramic material. The coating provides a desirable thermal barrier for internal engine components. Further, the coating is graded to avoid harmful internal thermal stress between dissimilar materials in the coating, and has a sealed external surface that is resistant to corrosion, erosion, hot gas infiltration, and wear during operation in an internal combustion engine.

Abstract: A brazing sheet having an Al alloy core material one or each of whose surfaces is clad with a brazing material, the brazing sheet being excellent in vacuum brazing ability suitable for the manufacture of aluminum heat exchangers that have a hollow structure. The brazing material is an Al--Mg--Si alloy brazing material comprising 0.6 to 1.8 wt % of Mg, 6.0 to 20.0 wt % of Si, and the balance of Al and inevitable impurities, and having, in its metal texture, 1,000/mm.sup.2 or more Mg.sub.2 Si particles 2 to 5 .mu.m in diameter, with the particles being assumed to be spheres, and 3,000/mm.sup.2 or more Si particles 6 .mu.m or less in diameter, with the particles being assumed to be spheres.

Abstract: Novel, hot pressed metal-ceramic mixtures provide increased density, hardness, and flexural strength in comparison with pure densified ceramics.

Abstract: Preparation of feed screw having a wear resistant alloy coating thereon for the injection molding or extrusion of plastic. Nickel-based alloys that have shown themselves to be compatible with inlaid barrel liners by virtue of similar wear ratios, modulus of elasticity, ultimate yield strength, and linear thermal coefficients of expansion, are sprayed at high velocity onto a heated feed screw to mechanically bond the alloy to the feed screw. The alloy is then fused to the feed screw in a controlled manner. Following the fusing process, the feed screw and alloy thereon is heated and allowed to cool in a highly controlled environment to produce a crack-free dense coating of the alloy on the screw substrate.

Abstract: A ternary-alloy/glass composite suitable for use in vias in glass-ceramic electronic structures includes gold, palladium, and either platinum or silver in the alloy where the gold is less than 50% by weight of the alloy. The alloy is combined with glass frit where the glass is present as 5-50% by volume in the composition. The ternary-alloy glass composite is sintered in the glass-ceramic structure and provides a hermetic seal. Chips and pins can be bonded directly to the ternary-alloy/glass composite using a eutectic braze without causing cracks in the glass-ceramic. The ternary-alloy/glass composite has good adhesion with glass-ceramics and is useful in vias in electronic structures.

Abstract: A process for manufacturing a metallic powder molded article comprising the steps of preparing a mixture of inflammable metallic powders and synthetic resin and molding under pressure and heat the mixture to form a molded body. Pressure and heat are applied such as by buffing onto a surface of the molded body to deform and bond together the metallic powders on the molded body surface to form a substantially continuous metallic surface. A plated layer may be applied on the continuous metallic surface. The process manufactures a metallic powder molded article comprising a molded body of a mixture of inflammable metallic powders and synthetic resin having a substantially continuous metallic surface defined by the metallic powders compacted and bonded together.