Abstract: A method of producing a flux-cored brazing composition for brazing aluminum that can be produced in lengths ranging from 500 to 10,000 feet long. The flux, preferably a finely powdered potassium fluoroaluminate complex, is deposited in an extremely small channel of aluminum filler material using a volumetric feeder to ensure an even distribution of flux to metal alloy.

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: Process of imparting conductivity to a three-dimensional net-shaped porous sheet can be performed efficiently before carrying out electroplating process. Fine metallic powders are applied to the porous sheet made of a foamed sheet, a nonwoven sheet, a mesh sheet or a plurality of sheets layered one on the other, so that a conductive metallic layer is formed on the porous sheet. Then, an electroplated layer is formed on the surface of the conductive metallic layer. The conductive metallic layer remains when the porous sheet burned out. Consequently, a metallic layer of the conductive metallic layer and the electroplated layer forms the metallic framework of the metallic porous sheet.

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: Direct fabrication of three-dimensional metal parts by irradiating a thin layer of a mixture of metal powder and temperature equalization and unification vehicle to melt the metal powder and form a solid metal film. The vehicle also protects the molten metal from oxidation. The metal powder can contain an elemental metal or several metals, the vehicle can be an organic resin or an amalgam, and the irradiation can be selectively applied by a YAG laser.

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 PTC device has two electrodes affixed to opposed surfaces. The electrodes consist of a metal foil having a conductive layer on their surfaces that contact the PTC material. The conductive layer has a thermal coefficient of expansion intermediate between the thermal coefficients of expansion of the metal foil and the PTC material. The intermediate value of the thermal coefficient of expansion of the conductive layer prevents peeling of the electrodes off the PTC element due to the variation of the temperature of the PTC device resulting from repeated voltage applications. In addition, improved adhesion of the electrodes to the PTC material reduces resistance changes after repeated temperature cycling.

Abstract: There is disclosed a precious metal article which is formed of a solid-phase sintered product of a precious metal powder. For manufacturing the precious metal article, a moldable mixture which contains a precious metal powder and a binder removable by sintering is shaped into a prescribed molded object, and the molded object is then subjected to sintering. The moldable mixture is produced by preparing a precious metal powder, preparing a jellylike cellulose binder by blending a cellulose with water and leaving for a prescribed period of time, and blending the precious metal powder and the jellylike cellulose binder together. The most preferable moldable mixture contains 50 to 90% by weight of precious metal powder, 0.8 to 8% by weight of water-soluble cellulose binder, 0.08 to 3% by weight of a surface-active agent. 0.1 to 3% by weight of oil, balance water and unavoidable impurities.

Abstract: Disclosed herein are a fluororesin composition for a sliding member comprising a fluororesin, at least one of fillers selected from the group consisting of glass fiber, glass powder, carbon fiber and carbon powder, and a phosphate, and a sliding member thereof.

Abstract: An aluminum alloy composite sheet is described for use in brazing. It includes an aluminum alloy core sheet clad on at least one face thereof with a sheet of aluminum or aluminum alloys including those containing magnesium. The composite sheet is useful for brazing when the cladding is coated with a mixture of (i) metal particles, e.g. silicon, capable of forming a eutectic alloy with aluminum and (ii) brazing flux, e.g. a potassium fluoro-aluminate. To be effective for brazing, the magnesium must be present in such quantity that at the time of brazing, the surface being brazed contains less than 0.1% by weight magnesium.

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 cermet alloy and a drill formed of the cermet alloy include hard dispersed phases and binder metal phases. The hard dispersed phases include a metal atom group containing titanium and a nonmetal atom group containing nitrogen. The amount of titanium contained in the metal atom group is at least 0.5 and not more than 0.95 as an atomic ratio. The amount of nitrogen contained in the nonmetal atom group is at least 0.1 and not more than 0.7 as an atomic ratio. The hard dispersed phases further include a fine grained portion having a mean grain size of at least 0.2 .mu.m and not more than 0.6 .mu.m and a coarse grained portion having a mean grain size of at least 1 .mu.m and not more than 3 .mu.m. The volume ratio of the fine grained portion to the course grained portion is at least 0.3 and not more than 3. The proportion of the binder metal phases contained in the cermet is at least 5 percent by weight and not more than 30 percent by weight.

Abstract: An improved carbon/metal composite is disclosed which comprises a carbon matrix and metal fibers distributed in the carbon matrix. The improvement is that the metal fibers are selected from (A) metal fibers in which the surfaces of at least a portion of the fibers are coated or alloyed with another material which has a tendency to form carbides which is equal to or lower than that of the metal constituting the metal fibers, (B) metal fibers comprising at least two different types of metal fibers which differ with respect to their dimensions and/or material, and (C) metal fibers distributed in the carbon matrix in such a manner that their content varies along the thickness of the composite, thereby imparting to the composite improved properties with respect to at least one of mechanical strength, impact resistance, wear resistance, and electric conductivity.

Abstract: An adhesive composition is derived from an acrylate ester polymer, dextrin, a surfactant and optionally a tackifier.

Abstract: Porous coating for substrates especially metal substrates. The pores are created by the removal of a fugitive material. The coatings have useful numerous applications also for heat exchange, optical coating and non-slip. Products formed from the coating and a method of forming such products are also disclosed.

Abstract: A method of producing self-supporting ceramic or ceramic composite bodies having a polymer component, which includes first providing a self-supporting ceramic or ceramic composite body comprising (i) a polycrystalline oxidation reaction product formed upon oxidation of a molten parent metal with an oxidant, and (ii) interconnected porosity at least partially accessible from one or more surfaces of said ceramic body. The polymer is disposed or formed within the interconnected porosity. The polymer is situated so as to alter, modify or contribute to the properties of the ceramic or ceramic composite body originally formed.

Abstract: An improved method for encasing objects in metal is disclosed as are the novel encased objects so prepared. An object is wrapped with a sheet comprising sinterable particulate or powdered metal and an organic binder, and is the fired to volatilize the binder and to sinter the particulate metal into a unitary metal structure. In the preferred embodiment of this invention, the object to be encased is a green sinterable particulate object which undergoes sintering simultaneously with the particulate metal casing during the firing step.

Abstract: In a mechanical plating process, oxidation-prone metals, such as aluminum, titanium, magnesium, and mixtures thereof, can be applied to metal substrates without the corrosion problems encountered in the prior art. To avoid such problems, the substrate is plated with the oxidation-prone metal and relatively minor amounts of an immersion metal and, optionally, a protective metal. The immersion metal which can be salts or oxides of metals selected from the group consisting of tin, copper, nickel, cadmium, zinc, lead, and mixtures thereof coats the oxidation-prone metal in forming a mechanical plating coating and prevents formation of an oxide layer on the oxidation-prone metal. The protective metal which may be selected from the group consisting of zinc, cadmium, and mixtures thereof prevents oxidation of the plated metal substrate when exposed to the environment. An etching agent is used either prior to and/or during mechanical plating.

Abstract: A diamond-coated tungsten carbide-base sintered hard alloy material for inserts of cutting tools, which has greatly improved bond strength or degree of bonding of the diamond coating layer to the matrix and therefore is capable of exhibiting excellent cutting performance over a long period of time.The sintered hard alloy material comprises:(1) a matrix of a sintered hard alloy consisting essentially of 1-4 percent by weight cobalt, and the balance of tungsten carbide and inevitable impurities, the tungsten carbide having a coarse grain structure having an average grain size of 2-10 microns; and(2) a diamond coating layer formed over surfaces of the matrix by forming an etching layer over the matrix surfaces and then forming the diamond coating layer over the matrix surfaces via the etching layer by a low pressure vapor-phase synthesization method.If required, the matrix may further contain CO1-CO8 (ISO) free carbon.

Abstract: The invention provides a composition which is useful in applying an abrasion-resistant coating to a surface, typically by welding. The abrasion-resistant coating is preferably a mixture of tungsten carbide and an alloy. The composition is formed into a length of material extruded over a continuous metallic core, and then wound onto a spool. The composition includes both the tungsten carbide and an alloy having a melting temperature less than that of most ductile metals such as steel, alloy steel, nickel or nickel alloys. These components are mixed with an organic binder and a plasticizer. The organic binder enables the mixture to be extruded, and the plasticizer prevents the composition from becoming brittle after drying. When applied to the surface being coated, the alloy holds the particles of tungsten carbide together, and thus forms the desired coating. The alloy includes a plurality of round, or nearly round, particles.

Abstract: The mentioned ceriated tungsten material is a non-radioactive, hardly consumable or nonconsumable matallic electrode material, utilized in the inert gas shield arc welding, plasma welding, cutting, spray coating and smelting. It can also be used as electrodes for laser transmitting source and gas discharging light source. Moreover, the said material can be utilized to make as the cathodic filament used in film deposition by electronic beam under vacuum, etc. This invention employs the technique of powder metallurgy, by strictly controlling the processing parameters to fabricate the ceriated-tungsten material, containing 1.0-4.5%* ceric oxide. Thereby, the difficulties, that had been existed for quite a long time of its processing brittleness in forging the ceriated tungsten material over 1.0%, have now been satisfactorily overcome.

Abstract: There is disclosed a process for forming a wear-resistant, sintered layer on a metallic substrate. The process comprises steps of adhesively attaching to a surface of metallic substrate an alloy particle sheet containing 94 to 99 weight % of ternary eutectic alloy particles and 6 to 1 weight % of acryl binder, heating in a non-oxidating atmosphere to a temperature of 150.degree. to 380.degree. C. and holding at the temperature for at least 5 minutes, and heating a sintering temperature of the alloy particles.

Abstract: A microwave oven cabinet is constructed with plastic materials and has a low resistivity coating on the outside surfaces thereof, which coating is achieved by applying a mixture of a metallic powder and polymer on the surfaces and curing the polymer, followed by an augmentation replacement reaction being effected to replace some of the metallic powder with a more noble metal in such a way that the total volume on the surface of deposited metal exceeds that of the original metal powder replaced at the surface.

Abstract: Temperature resistant substrates, and particularly metals such as ferrous metals, coated for corrosion resistance with coatings containing particulate metal and hexavalent chromium-providing substance can now be made further corrosion resistant, as well as having excellent heat resistance, with a coating composite. In the composite, the undercoating contains a boric acid component plus substantial amounts of finely-divided aluminum as particulate metal. As an adjacent top layer, a coating containing silica substance is used.

Abstract: Method for hard facing iron or iron base alloy substrates using as a hard facing material a solid composition consisting essentially of grains of vanadium carbide having in solid solution from about 10 to 50% by weight tungsten, and containing from about 0.5 to 5% by weight manganese and 0 to 3% by weight copper in the grain boundaries.

Abstract: A covered electrode for welding chloride resistant stainless steel of the type containing about 0.04% carbon, 20% chromium, 24% nickel, 5% molybdenum, and balance iron. The covered electrode provides the capability for producing substantially defect-free stainless steel weld deposits that offer excellent resistance to crevice corrosion, as well as general corrosion in chloride containing environments.

Abstract: A nickel-base welding electrode is provided comprising a nickel core and a metallic powder-laden flux coating bonded thereto, the total composition of the electrode comprising about 40% to 50% by weight of the nickel core and about 60% to 50% by weight of the coating. The coating contains as fluxes about 18% to 30% titanium dioxide, about 8% to 16% calcium fluoride, about 1% to 3% iron carbonate, about 1.5% to 4% calcium carbonate, about 2% to 6% calcium-magnesium carbonate, and contains as the powdered metals about 20% to 30% chromium, about 3% to 8% manganese, about 1% to 4% molybdenum, about 1% to 5% niobium, about 8% to 18% iron, 0% to about 6% nickel, up to 1% graphite, and as extrusion aids about 1% to 4% clay and about 1% to 5% organic extrusion aid material.

Abstract: Electrically conducting acrylic and modacrylic fibers are prepared by subjecting the fibers to a first heat-treatment in a bath containing a copper compound and a reducing agent to adsorb monovalent copper ions within the fibers. The heat-treated fibers are washed thoroughly and then subjected to a second heat-treatment in the presence of a sulfur-containing compound to convert the adsorbed monovalent copper ions to copper sulfide. The electrically conducting fibers have superior conductivity which is not lost in repeated washings. The electrically conductive fibers can be dyed readily with cationic dyes without loss of electrical conductivity. The electrically conductive fibers of the present invention possess the touch and other physical characteristics of the starting acrylic or modacrylic fibers.

Abstract: An article of improved wear characteristics and composed of a relatively low wear resistant base metal coated by a particulate refractory metal having a melting point of at least 1490.degree. C. deposited within the near-surface region thereof comprising a base metal or alloy of relatively low wear resistance, a refractory metal deposited within said near-surface region, said refractory metal being selectively deposited in the form of discrete particles, and the particles being idiomorphic or blocky or equiaxial or spheroidal or acicular or dendritic and a plurality of these particles having dimensions of less than 10 micrometers, a plurality of the particles being contiguous to form clusters of the particles that are spaced from each other. The clusters of particles may form microscopic regions of refractory metal which in turn may produce macroscopic regions of refractory metal having the appearance of a continuous coating.

Abstract: Metals, particularly ferrous metals, coated for corrosion resistance with coatings containing particulate metal and hexavalent chromium-providing substance can now be made further corrosion resistant, as well as heat resistant, with a topcoat of silica substance. In addition, mar resistance plus improved outdoor weathering is also achieved, without sacrifice to other characteristics, e.g., coating adhesion.

Abstract: A solar collector has a surface turned toward the sun and forms a heat exchange cell which has at least one wall composed of sheet aluminum. A tramsmitting layer of such a wall or the absorption layer thereof is a black layer of aluminum oxide containing Ag or Sn and formed unitarily on the aluminum sheet, e.g. by a chemical or electrochemical process.

Abstract: Method for producing an electrically conductive and solderable structure along with the resulting article are disclosed. The method comprises admixing metal particles, metal salts and an organic polymer binder as a paste which is applied to a non-conductive substrate by printing or the like. The paste is heated to permit metal salts to migrate to the surface of the binder where they become concentrated. During metallizing the salts are removed by the bath and metal is deposited in pores formed in the binder by the dissolved salts. The metal layer is adherent to the binder and provides good solderable points.

Abstract: A laminate of insulating material having fine metallic articles dispersed therein is rendered highly conductive by passing electrical energy through the laminate of sufficient strength to break down the dielectric resistance of the insulating material at the points of contact of the metallic articles.

Abstract: A composition suitable for the protection of corrodible metal surfaces which comprises a binder and a filler. The filler is constituted of a mixture of a comminuted refractory ferro alloy and a non-metallic inhibitor such as zinc chromate or zinc yellow, the latter being present in an amount sufficient to enhance the corrosion protection and weldability of the coated metal surfaces. Various binders, both inorganic and organic, may be used and the filler is preferably a mixture of a major amount of ferrophos (Fe.sub.2 P) and a minor amount, e.g., about 10 percent by weight of the filler, of zinc yellow.