Abstract: A high-strength ceramic laminated tube comprising an inner tube of ceramic material and at least one outer tube of a metal or ceramic material shrunken onto the inner tube is provided, e.g., a ceramic tube capable of withstanding the mechanical stresses which occur in, e.g., a gun barrel, or in a bearing subjected to great stress.

Abstract: Substrates such as boron nitride and titanium diboride and the like joined to other metal or metal sandwiches useful as resistance elements.

Abstract: The present invention relates to a composite diamond compact for a wire drawing die, in which a part or all of the circumference of a diamond sintered body is surrounded by a cermet consisting of a hard compound of (Mo, W)C type carbide crystals containing molybdenum as a predominant component, bonded by an iron group metal, and the binder phase of the diamond sintered body contains an iron group metal and fine carbide crystals containing molybdenum as a predominant component.

Abstract: Nickel powders having an improved chemical stability are formed by reaction with an electroconductive coating such as a carbide, a silicide, or the like and, also, a reaction with sulfur.

Abstract: Disclosed is an electrical contact of composite layer type which comprises an interrupting layer consisting of Cu-W alloy, Cu-WC alloy or Cu-W-WC alloy containing 20 to 60 wt % of Cu and being bonded to the top surface of a base plate, and a contacting layer consisting of Ag-WC alloy, Ag-W alloy or Ag-W-WC alloy containing 20 to 60 wt % of Ag and being bonded to the top surface of said interrupting layer.

Abstract: A multi-layered wear resistant article and a method for forming the same is disclosed which is adapted for use with cutting tools. More particularly, the article includes a substrate formed from a cemented sintered metal carbide material such as a tungsten carbide and cobalt composition. A bonding layer formed of elemental boron is provided to increase the adhesion between the substrate and an outer coating of a wear resistant material such as titanium boride. A thin intermediate layer of titanium carbide, titanium nitride, titanium carbonitride, hafnium carbide, hafnium nitride, hafnium carbonitride, zirconium carbide, zirconium nitride, zirconium carbonitride, or a mixture of any of the foregoing may be interposed between the boron adhesive layer and the substrate to prevent diffusion of boron from the bonding layer into the substrate.

Abstract: A cutting tool or a wear-resistant mechanical part comprises: a substrate of WC, Co, TiC, and TaC with or without an inner coating layer of TiC, TiN or TiCN; an intermediate layer of a titanium oxycarbide formed on the surface of the substrate or the inner coating layer by carrying out a reaction thereon at a temperature of 800.degree. to 1,200.degree. C. of a halide of titanium, hydrogen, and carbon monoxide or carbon dioxide or a mixture thereof; and an outer coating layer of aluminum oxide formed on the outer surface of the intermediate layer. The thicknesses of the inner layer, the intermediate layer , and the outer coating layer are of the order of 0.5 to 20 microns, 0.5 to 20 microns, and 0.5 to 10 microns, respectively.

Abstract: The surface-coated blade member for cutting tools comprises a metal substrate and a coating on at least one surface of said substrate, said coating composed of a layer of vapor deposited titanium on the surface of said metal substrate and at least one layer of vapor deposited titanium compound on said layer of titanium, and said layer of titanium compound being selected from the group consisting of titanium carbide, titanium nitride, titanium carbonitride, titanium oxy-carbide and titanium oxy-carbo-nitride, said layer of titanium being no larger than 2 .mu.m thick and said layer of titanium compound being 0.5 to 10 .mu.m thick. A process for producing such a blade member is also disclosed.

Abstract: A composite and a method for bonding the composite. The composite includes a ceramic portion of silicon nitride, a refractory metal portion and a layer of MoSi.sub.2 indirectly bonding the composite together. The method includes contacting the layer of MoSi.sub.2 with a surface of the silicon nitride and with a surface of the metal; heating the layer to a temperature below 1400.degree. C.; and, simultaneously with the heating, compressing the layer such that the contacting is with a pressure of at least 30 MPa. This composite overcomes useful life problems in the fabrication of parts for a helical expander for use in power generation.

Abstract: A compound body comprising a metallic basic body, an inner layer or layers of carbides and/or nitrides of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Si, or B, and an outer layer or layers of a mixture of oxides and nitrides and/or oxynitrides of Cr, Al, Ca, Mg, Th, Sc, Y, La, Ti, Hf, V, Nb, or Ta. The compound body can be used as a part subject to wear, and for machining metallic materials.

Abstract: A thin film of magnetic recording material is sputter deposited over a base layer of gold and tantalum on a polished substrate. A protective layer of gold and tantalum is deposited overlaying the magnetic recording film. A solid lubricant layer such as carbon, preferably in the form of graphite, gold, silver, tin, molybdenum disulfide, and tungsten disulfide is sputter deposited or ion plated over the protective layer to reduce wear. The recording contacting portion of the recording head is similarly coated with a solid lubricant material. Other suitable protective materials include tantalum, niobium, tungsten and nitrides and carbides of such metals. In a preferred method for making such recording members, the layers are successively sputter deposited in an evacuated sputter chamber, whereby the recording layers and protective coatings are formed in a continuous process requiring only one pump down.

Abstract: A coated cemented carbide article comprises a cemented carbide substrate, the surface regions thereof having diffused therein an element such as boron, silicon or aluminum. The article further comprises a coating disposed on the diffused substrate, the coating being a boride such as titanium boride, hafnium boride, zirconium boride or tantalum boride. In another embodiment the coated cemented article further includes an interlayer sandwiched between the diffused substrate and the boride coating, the interlayer being one or more layers formed from the carbides, nitrides or carbonitrides of elements from groups IVb and Vb of the Periodic Table of Elements, and combinations thereof.

Abstract: An externally ornamental golden color part such as a wrist watch case, band or bezel comprising a thermal resistance substrate and a titanium nitride coating deposited on said substrate and including in a portion of the thickness of said coating at least one member selected from the group comprising Al, Si, V, Cr, Fe, Co, Ni, Cu, Zn, Ge, Y, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Ti, Hf, Ta, W, Ir, Pt and Au.

Abstract: A tool joint hardfacing containing sintered tungsten carbide granules embedded in an alloy steel matrix, with the surface substantially free of protruding granules to decrease casing wear during well drilling. The hardfacing is applied in a single application by rotating the drill pipe, providing an arc between a consummable steel wire and the pipe to create a weld puddle, and reciprocating the wire parallel to the pipe axis to create a band. Sintered tungsten carbide granules are gravity fed from an orifice directly into the arc and precipitate toward the bottom of the matrix to provide a smooth surface. The bottom of the matrix appears to be harder than the top.

Abstract: A method of depositing a hard, fine grained metal or semi-metal alloy is described wherein a volatile halide of the metal or semi-metal is partially reduced and then deposited as a liquid phase intermediate compound onto a substrate in the presence of an alloying gas. The liquid phase deposited on the substrate is then thermochemically reacted to produce the hard, fine grained alloy. Also described are products which may be produced by the above method.

Abstract: Process of improving a sprayed layer on a bearing or tool component subjected to relatively high stresses, characterized in that the layer is remelted by a heat-source in a vacuum chamber, the heating being arranged such that only the layer itself is remelted.

Abstract: An ornamental part for watches such as a watch case having a composite coating layer consisting essentially of titanium and titanium nitride, the ratio of the two components being varied in the direction of the thickness of the layer. The composite coating may be formed by the physical vapor deposition method in which the titanium in the vapor phase is reacted with nitrogen under a glow-discharge condition. The coating thus formed has a gold color and excellent physical and chemical properties.

Abstract: A multilayered thin film structure comprising layers of resistive and conductive materials on a substrate, said layers including tantalum nitride, palladium and gold. A layer of titanium nitride, is used between the tantalum nitride and palladium layers to act as an adhesive layer, to prevent undercutting during etching, and to allow all metal depositing to be performed during one step.

Abstract: Metals constituting the matrix of carbon (graphite) filament reinforced composites are alloyed with titanium and boron to prevent or reduce the migration of the titanium-boron coating applied to the filaments prior to their impregnation with the metal matrix materials.

Abstract: Novel powders, and resinous compositions bearing said powders, characterized by excellent chemical stability, electrical conductivity, and energy-absorbing characteristics. These three characteristics can be utilized, alone or combination, in forming many novel articles including microwave shielding apparatus, magnetic recording media, explosives, and the like articles. The more advantageous powders are characterized by a very thin coating of an electrically conductive metal carbide, metal silicide, or metal boride upon the surface thereof, and a metal core.

Abstract: A composite diaphragm for a speaker comprises a boron layer formed on a metal foil such as titanium foil, in which a layer of a low melting point metal such as aluminum or magnesium is interposed between the metal foil and the boron layer to provide high rigidity, high elasticity and high bonding strength between the metal foil and the boron layer.

Abstract: The disclosure relates to an improved sputter target for use in the deposition of hard coatings. An exemplary target is given wherein titanium diboride is brazed to a tantalum backing plate using a gold-palladium-nickel braze alloy.

Abstract: Hard-facing of iron and iron base alloy substrates is disclosed using a hard facing material in the form of granules consisting essentially of grains of chemically combined vanadium, tungsten, molybdenum, and carbon bonded by a binder metal of nickel-molybdenum alloy.

Abstract: A carbide laden consumable is produced using a mold having at least one U-shaped groove running along the surface thereof, the consumable being produced by charging a first layer of a powdered self-fluxing alloy into the groove, a second layer of a powdered refractory carbide on said first layer and a third layer of said self-fluxing alloy on the carbide layer, and the charged mold then passed through a heating furnace under a reducing atmosphere to produce by melting and cooling a consumable of markedly improved quality.

Abstract: Cast superalloys of the formula P.sub.x Q.sub.y R.sub.z wherein P is an element selected from the group consisting of Fe, Ni, Cr, Co or mixtures thereof, wherein Q is a refractory element selected from the group consisting of Mo, W, Ta or a mixture thereof wherein R is a reactive element selected from the group consisting of Al, Ti, Cb or mixtures thereof, x is from about 65 to about 95 atomic percent, y is from about 1 to about 10 atomic percent, z is from about 1 to about 18 atomic percent and x+y+z is equal to about 100 in the form of thin foil are made ductile by the presence of appreciable amounts of amorphous phase and micro-crystalline, metastable single phase and subsequently boron is deposited as nickel, iron or cobalt boride on the surface of the foil at a temperature below the crystallization temperature of the superalloy. Such foil is especially suited for preplacement in a joining operation such as brazing.

Abstract: Thin film absorber stacks consisting of an absorptive film of titanium, zirconium or hafnium suboxide, subcarbide or subnitride superposed on a reflective film of silver, aluminum or copper display spectrally selective characteristics. The absorptive film may be prepared by reactively sputtering the metal or the metal carbide in argon or other inert gas with small amounts of gas containing carbon, oxygen or nitrogen or their combinations, or by reaction of the metal film in air or other gas.