Abstract: Wire of co-drawn composite of conductor core and matrix is provided, for instance in the form of high purity aluminum conductor and Al-Fe-Ce alloy matrix, suitable for use for electrical conduction at cryogenic temperatures. Included are extrusion and drawing processes enabling successful production.

Abstract: Metal matrix composites are manufactured in a vacuum die casting machine. Solid aggregate material, at least 65 volume percent, is placed in a die, the die is evacuated and heated, and molten metal is driven by a piston to infiltrate the solid aggregate material where it subsequently solidifies to form a metal matrix composite.

Abstract: A vacuum die-casting machine has a bellows forming a sealed enclosure between the rear of the fill chamber and the piston rod. A vacuum is applied to the enclosure during evacuation of the die cavity and charging of the fill chamber with molten metal. As the piston moves forward, an inert gas at about atmospheric pressure is introduced into the enclosure and extends into the feed tube.

Abstract: The present invention refers to a process for whitening kaolinitic clays by adding an aqueous acid solution containing sodium bisulfite and atomized aluminum powder, thereby causing the reduction of the contaminating iron ions present in the kaolin, resulting in a considerable increase in its whiteness index as well as a reduction of the particle size of the product obtained.

Abstract: A method for making a light metal-rare earth metal alloy comprises adding a pellet to a substantially flux-free bath of molten light metal, said pellet including a mixture of rare earth metal-containing compound and one or more light metal powders. On a preferred basis, such mixtures comprise scandium oxide, up to about 10 wt. % aluminum powder and a substantial majority of magnesium powder, all of which are substantially similar in median particle size. This mixture is preferably compacted under a pressure of about 7 kpsi or more, then added to a bath of molten magnesium or molten aluminum to make magnesium-scandium, magnesium-aluminum-scandium, or aluminum-magnesium-scandium alloys therefrom. There is further disclosed a method for making an alloy containing about 7-12 wt. % lithium, about 2-7 wt. % aluminum, about 0.4-2 wt. % scandium, up to about 2 wt. % zinc and up to about 1 wt. % manganese, the balance magnesium and impurities.

Abstract: A method for the production of aluminum hydroxide, including reacting water in the liquid phase and aluminum at a pH above about 12.4. In this pH range, aluminum hydroxide is produced at acceptable rates both for aluminum surface areas above 75,000 mm.sup.2 /g and for aluminum surface area of less than about 50,000 mm.sup.2 per gram, and even down to 20 mm.sup.2 per gram. According to an alternative view of the invention, it is characterized by the production of aluminum hydroxide by reacting aluminum with liquid water containing choline. Aluminum hydroxide particles having unique morphologies are obtained.

Abstract: A method of manufacture including bringing seed and aluminum hydroxide together in an aqueous medium and hydrothermally digesting for producing boehmite at the expense of the aluminum hydroxide.

Abstract: High performance titanium alloys useful as impellers and disks for gas turbine engines are provided, together with processes for their preparation.

Abstract: A coating composition and method of coating for producing a coating containing at least 21-22% by volume titanium dioxide pigment for developing hiding on a suitable substrate, the coating composition having a pigment volume concentration (PVC) of up to a critical pigment volume concentration (CPVC), preferably a PVC of from about 25% to about 50-60% and more preferably from about 25% to about 45%, and a pigment system including an optional filler and a prime pigment comprising about 70-98% by volume titanium dioxide (TiO.sub.2), preferably a rutile form having a median particle size of about 0.2 microns, and about 2-30% by volume of an aluminum trihydrate (ATH) spacer/extender pigment having a similar median particle size and particle size distribution, preferably substantially the same as for the TiO.sub.2 pigment.

Abstract: This invention is characterized by working which improves metal formability. This is contrary to the usual result of working metals, where formability decreases during working.

Abstract: In a process utilizing steam, the method of producing at least a portion of said steam, including heating a water-containing, solid substance for generating steam and capturing the generated steam for said process. A suitable solid substance is Al(OH).sub.3 . New alumina products and uses therefor are obtained.

Abstract: High performance Ti-6A1-4V alloys skewed with oxygen and nitrogen and useful as impellers are provided and a process for their preparation.

Abstract: An aging process for solution-heat-treated, precipitation hardening metal alloy includes first underaging the alloy, such that a yield strength below peak yield strength is obtained, followed by higher aging for improving the corrosion resistance of the alloy, followed by lower temperature aging to strength increased over that achieved initially.

Abstract: This invention provides improved casting processes, equipment, and products. The invention is especially advantageous for die casting.

Abstract: Crystalline aluminum phosphorus compounds are provided which are useful as flame retardants and strength additives for organic polymeric materials. Typical compounds are formed from the reaction of aluminum hydroxide and a monobasic, dibasic or tribasic sodium phosphate.

Abstract: A continuous salt-based process is provided for melting and reclaiming aluminum from aluminum scrap containing impurities including heating a molten salt in a heat bay, mixing the heated salt with aluminum scrap or skim in a charge bay to form a molten charge mixture, separating aluminum from impurities in the charge bay by coalescing aluminum to form a molten aluminum metal pad, chlorinating a portion of the charge mixture from the charge bay to form a chlorinated salt mixture and metal chlorides, removing metal chlorides from the salt mixture, and feeding the salt mixture back to the heat bay. In one aspect, the chlorinating step of the present invention includes introducing carbon monoxide or, preferably, solid carbon to control oxide concentration. The process further comprises adding fluorides and removing metal chlorides from the salt to maintain a preferred salt composition.

Abstract: A method for measuring temperature in a rolling operation, including measuring mechanical parameters of the rolling operation and calculating friction and temperature from the mechanical parameters.

Abstract: A method for making a light metal-rare earth metal alloy comprises adding a pellet to a bath of molten light metal, said pellet consisting essentially of a mixture of light metal powder and rare earth metal-containing compound. Such pellets, which are made under pressures of about 9 ksi or more, are preferably added to molten baths of aluminum, magnesium or combinations thereof. The light metal powders and rare earth metal-containing compounds that are mixed together to form said pellets are preferably substantially similar in terms of median particle size. This method is suitable for aluminothermically reducing scandium oxide to make aluminum-scandium alloy therefrom.

Abstract: Alumina having greater than 0.4 cc/g pore volume in the range 30 to 200 Angstroms pore diameter.A catalyst containing gamma alumina but essentially no eta alumina.The method of tailoring pore size distribution comprising bonding mixtures of particles of rehydration bondable alumina of different particle porosity.

Abstract: An improved electrolytic cell and process are provided wherein metals and metal alloys are formed from oxides or nitrides in a molten salt, without the evolution of halogen or halogen compounds, with less corrosion and reduced power consumption by the use of an electrode having an extended or substantially increased surface area effective for the evolution of oxygen and carbon oxide, and a molten salt electrolyte effective at low temperature.