Abstract: The matrix is an alloy having an alpha-2 crystal form. The matrix is reinforced with silicon carbide filaments. To reduce the tendency of the matrix to form cracks due to the brittle nature of the interface with the SiC filaments, the surface of the filaments is coated with a beta phase stabilizer composition. Such a composition contains at least one element selected from the group consisting of Mo, Cr, W, Ta, Pd, Nb, Ag, Zr, Hf, V, Re, Ir, Mn, Fe, Co, Ni, Cu, Pt, Au, and Sn.

Abstract: A particulate mixture of Cu and Fe is compacted and mechanically reduced to form an "in-situ" Cu-Fe composite having high strength and high conductivity. Compaction and mechanical reduction of the particulate mixture are carried out at a temperature and time at temperature selected to avoid dissolution of Fe into the Cu matrix particulates to a harmful extent that substantially degrades the conductivity of the Cu-Fe composite.

Abstract: A mixture comprised of an alkali chloride solvent and reactants comprised of oxides of lanthanum, an alkaline earth and copper, wherein the reactants are formulated to produce a superconducting reaction product, is heated to melt the chloride solvent in which the reactants then dissolve and react precipitating a lanthanum-alkaline earth-copper-oxygen superconductive material.

Abstract: An amorphous aluminum-refractory metal alloy with special characteristics such as high corrosion resistance, high wear resistance and considerable toughness, consisting of Al and at least one element selected from refractory metals of Ta, Nb, Mo and W, a portion of the set forth refractory metals being allowed to be substituted with at least one element selected from Ti and Zr.

Abstract: A method for the manufacture of copper base alloys having improved resistance to thermally induced softening is provided. The alloy composition is selected so that the alloy undergoes either a peritectic or eutectic transformation during cooling. The solidification rate is controlled so that the second phase forms as a uniform dispersion of a relatively small dispersoid. The dispersoid inhibits recrystallization resulting in an alloy less susceptible to softening at elevated temperatures.

Abstract: A hybrid chassis structure including a layer of particulate reinforced metal and a layer of graphite fiber reinforced metal bonded to the particulate reinforced metal layer, wherein the overall thermal expansion, thermal conductivity and elasticity properties of the bonded hybrid structure are determined by controlling the properties of the respective layers.

Abstract: A molybdenum metal powder having an outer shell coating of MoO.sub.2 is useful in flame spray or plasma spray processes and is prepared by partially oxidizing molybdenum powder in a carbon dioxide atmosphere at temperatures of up to 1200.degree. C.

Abstract: A silver colored metal alloy having improved tarnish resistance is disclosed, which is intended primarily for solid sterling jewelry and utensils and may also be used in silver plating, and does not easily tarnish and corrode. The alloy consists essentially of 80% to 92.5% silver, 4% to 9% palladium, 0% to 10% copper and 0.5% to 1% indium or zinc.

Abstract: Chilled iron shots with the carbon content being about 3 weight % are mixed with zinc-based alloys containing copper at a temperature between the liquidus and solidus of the matrix phase alloy such that the matrix alloy becomes a mixture of liquid and solid phase particles. Such slurry state mixture is agitated to form a vortex and the iron shots are injected to the vortex zone. The composite zinc alloy fabricated by the preceding slurry vortex method is very economical without degrading the physical/mechanical behavior compared to conventional zinc alloys. The copper or zinc coating on iron shots tends to improve the wetting adhesion between shots and matrix alloy, thus eliminating defects at the interphase between shots and matrix phase.

Abstract: Mercury is mixed with an inorganic powder resulting in a permanent bonding of the mercury to the powder in a solid form. Thereafter the amalgam may be easily, safely, and legally deposited in a landfill. Suggested powders include copper, zinc, nickel, and sulphur in a ratio of powder to mercury of substantially 3:1. The mixture is followed by compound agitation.

Abstract: The present invention relates to powder particles consisting of hard principles and binder metal for the manufacture of superior, uniquely fine-grained hard material alloys and to a procedure for the preparation of said particles.The preparation is performed in an economical way because the procedure starts from conventional melt metallurgical raw materials. A pre-alloy consisting of hard principle forming and binder phase forming elements is subjected to a heat treatment such as nitriding and carburizing after being crushed. The final product is particles composed by hard principle phases and binder metal phases formed "in situ" in an effective binding.

Abstract: An amorphous aluminum-refractory metal alloy with special characteristics such as high corrosion resistance, high wear resistance and considerable toughness, consisting of Al and at least one element selected from refractory metals of Ta, Nb, Mo and W, a portion of the set forth refractory metals being allowed to be substituted with at least one element selected from Ti and Zr.

Abstract: An aluminum alloy that is suitable as material for cathode foils in electrolytic capacitors comprises0.9 to 1.7% iron0.1 to 0.8% manganesemax. 0.15% siliconmax. 0.3% copper,the remainder being aluminum with further trace elements, individually <0.05%, in total <0.15%, and the total iron and manganese content amounting to at most 1.9%.

Abstract: A metal matrix composite material containing discontinuous particles in a metallic matrix is prepared by forming a mixture of the molten alloy and the particles in a closed reactor, removing oxygen from the interior of the reactor, statically pressurizing the interior of the reactor with nitrogen gas, mixing the mixture of the molten alloy and particles in the presence of the static nitrogen gas to wet the molten matrix to the particles, and evacuating the interior of the reactor in a stepwise manner. The nitrogen gas aids in wetting the metallic alloy to the particles by forming aluminum nitride at the particle-molten matrix interface, so that a lower contact angle of the alloy to the particle results. Oxygen that may be present in the sealed reactor is gettered by the aluminum, and the nitrogen is removed by stepwise evacuation, thereby minimizing the introduction of gas into, and retention of gas within, the melt.

Abstract: An aluminum composite material as a brake disk material for railroad vehicles is obtained by dispersing and mixing reinforcement particles of alumina, silicon carbide or the like into an aluminum alloy. The reinforcement particles are 5 to 100 .mu.m in diameter, and are dispersed uniformly in the alloy in an amount of 1 to 25% by weight. An extremely excellent brake disk material for railroad vehicles is thus provided which is light in weight and has high strength, good thermal conductivity and high wear resistance.

Abstract: A porous metal supporting a composite portion of an aluminum alloy is formed by means of pressing a pair of surfaces thereof, and then chromium is cemented by diffusion before the molten aluminum alloy is penetrated thereinto. Thus, not only the mechanical strength of the interface between the aluminum alloy and the porous metal, but also the wear resistance of the composite portion can be improved.

Abstract: A Mg-Ti type alloy comprises 0.04 to 99.96% by weight of Ti and 99.96 to 0.04% by weight of Mg. The Mg-Ti type alloy is produced by compounding and mixing at least one of a powder of Ti and a powder of titanium hybride with a powder of Mg, so that the Ti composition in a sintered product may be in a range of 0.04 to 99.96% by weight; forming the resulting mixture into a predetermined shape, and sintering the formed material at a temperature in a range of from a solid phase point of Mg to a liquid phase point.

Abstract: A composition for forming a compound metal oxide of a specific composition and a process for preparing said compound oxide are disclosed. The composition comprises an alkoxide of a rare earth metal, an alkoxide of an alkaline earth metal and an organic acid salt of an organic complex of copper. The process comprises refluxing said composition for reaction and thermally decomposing the reaction product. Also a film-forming composition for forming a thin layer of a compound metal oxide is disclosed. Said film-forming compound comprises the above-mentioned composition plus a film forming resin and an organic solvent.

Abstract: The present invention relates to alloys having substantially uniform aggregate distribution, a method of making such alloys, and centrifigally cast members made from such alloys. The alloys of the present invention utilize aggregates of tungsten carbide, vanadium carbide and titanium carbide so formulated to allow them to be uniformly distributed throughout the alloy matrix.

Abstract: A brazeable aluminum alloy sheet consisting essentially of 0.8 to 1.3 wt % of Mn, 0.2 to 0.7 wt % of Si, one or two of 0.04 to 0.1 wt % of In and 0.1 to 2.0 wt % of Zn, the balance being aluminum and unavoidable impurities. The brazeable aluminum alloy sheet is produced by a process which comprises preparing an ingot of aluminum alloy containing 0.8 to 1.3 wt % of Mn and 0.2 to 0.7 wt % of Si, the balance being aluminum and unavoidable impurities, hot rolling the aluminum mass at a temperature of 350.degree. to 450.degree. C. without conducting a homogenizing treatment, conducting a first part of cold rolling on the hot rolled aluminum alloy, conducting a process annealing on the aluminum alloy at a temperature of 350.degree. to 420.degree. C., and conducting a second part of cold rolling on the annealed aluminum alloy at a draft percentage of 20 to 40%.