Abstract: A lead alloy is prepared by dispersing minor amounts by weight of silicon in a continuous lead phase. The alloy has a lesser density than unalloyed lead and has improved strength, excellent corrosion resistance, good electrical conductivity, and satisfactory workability.

Abstract: Aluminized nickel-base, cobalt-base and nickel-cobalt-base heat resistant alloy substrates are provided in which, prior to aluminizing the substrate, the substrate is provided with a thin coating of rhodium and thereafter a thin coating of platinum, the coatings being diffusion bonded to the substrate, such that when the prepared substrate is aluminized by pack cementation, a compositely structured coating is obtained characterized by improved resistance to high temperature oxidation and sulfidation.

Abstract: Infusible metal alloys are employed both as a parts material and as a brazing spelter for the connection of various parts and components made of materials based upon infusible metals and compounds, ceramics, graphite and the like.The alloys are based upon hafnium to which is added some elements selected from the subgroup B of the first group of the periodic system and some elements featuring melting point lying above 600.degree. C selected from the third to eighth groups of the periodic system.

Abstract: A method of making an aluminum-silicon composite utilizing aluminum-silicon alloy comprising aluminum as the principal metal with silicon, magnesium and copper in substantial amounts and iron, titanium, magnesium and zinc in lesser amounts and a substantial amount of a non-metal filler such as zircon, alumina, zirconia or aluminum silicates.

Abstract: Dental compositions comprising an admixture of two powdered alloys which when amalgamated with mercury produce corrosion-resistant dental amalgams.

Abstract: An improved dental composition comprises a uniform admixture in specified proportions of two powdered alloys of specified structure and composition, which when amalgamated with mercury produces a corrosion-resistant dental amalgam having enhanced mechanical properties and handling characteristics.

Abstract: An improved dental composition comprises an admixture in specified proportions of two powdered alloys of specified composition, one in the form of spheres, the other in the form of irregularly-shaped particles such as flakes. When the admixture is amalgamated with mercury, a corrosion-resistant dental amalgam having enhanced mechanical properties and handling characteristics is produced.

Abstract: An aluminum alloy foil for a high voltage electrolytic capacitor in which the foil contains one or more of the elements, antimony, barium, and zinc in quantities 5 to 200 ppm. and at the most 0.5 ppm. of lead and bismuth plus at the most 2 ppm. of calcium and chromium. The resulting foil has a greatly improved etching pore density.

Abstract: A novel dental composition comprises an admixture of two forms of a powdered alloy in specified proportions, i.e., a major proportion in the form of relatively smooth spheroidal particles, e.g., spheres, and a minor proportion in the form of relatively rough, irregularly shaped particles, e.g., flakes. The resulting dental composition requires less mercury for amalgamation and exhibits enhanced physical properties and handling characteristics.

Abstract: A metallic article is provided with improved resistance to high temperature environmental conditions through the inclusion of about 0.1-10 weight percent Hf in an article surface, such as through coating. A method for providing such a coating includes application of the Hf alone or in combination with other surface protective means. Application of Hf can occur before, during or after use of such protective means.

Abstract: A zinc based coating material useful for protecting ferrous surfaces against corrosion, also including magnesium, aluminum and chromium, wherein the percentage rato Mg/Al is between 1.5 and 5, the percentage ratio Cr/Mg is comprised between 0.03 and 0.2 and the amount of magnesium is between 1% and 5% by weight.

Abstract: A lead-antimony alloy is disclosed containing 0.5-3.5% by weight antimony, 0.025-0.3% by weight arsenic, 0.005-0.1% by weight selenium, 0.002-0.05% by weight tin, 0.01-0.1% by weight copper, balance lead. The alloy also preferably contains from 0.025-0.1% by weight silver.

Abstract: Coatings are described which are particularly suited for the protection of nickel and cobalt superalloy articles at elevated temperatures. The protective nature of the coatings is due to the formation of an alumina layer on the surface of the coating which serves to reduce oxidation/corrosion. The coatings contain aluminum, chromium, and one metal chosen from the group consisting of nickel and cobalt or mixtures thereof. The coatings further contain a small controlled percentage of hafnium which serves to greatly improve the adherence and durability of the protective alumina film on the surface of the coating.

Abstract: Lead alloy for the grids of lead storage batteries, which comprises from 1.0 to 3.5 % antimony, 0.025 to 0.2 % arsenic, 0.005 to 0.1 % selenium, 0.05 to 0.5 % tin, and the remainder lead.Preferably the alloy also contains 0.025 to 0.1 % silver.

Abstract: A composite superconductor which comprises (1) a first layer of an alloy ected from the group consisting of a vanadium-gallium (V--Ga) alloy with a gallium content from 12.5 at. % to 17.5 at. %, a niobium-tin alloy (Nb-Sn) with a tin content from 12 at. % to 17.5 at. %, and a vanadium-silicon (V--Si) alloy with a silicon content from 10.0 at. % to 20.0 at. %; (2) an intermediate layer of an A-15 compound selected from the group consisting of V.sub.3 Ga, Nb.sub.3 Sn, and V.sub.3 Si; (3) a third layer of an alloy selected from the group consisting of copper-gallium (Cu--Ga) alloy with a gallium content greater than 22 at. % but not greater than 30.0 at. %, a copper-tin (Cu-Sn) alloy with a tin content greater than 11 at. % but not greater than 21.0 at. %, and a copper-silicon (Cu--Si) alloy with a silicon content greater than 14 at. % but not greater than 21 at. %.

Abstract: A method of making silver-cadmium oxide-tin oxide type contact materials by oxidizing three-dimensional particles containing silver, cadmium, and tin and then consolidating the oxidized particles into bodies of the desired configuration. The resultant contact materials have a substantially uniform distribution of relatively coarse cadmium oxide particles, improved arc erosion properties, and little or no depleted or porous grain boundaries.

Abstract: An improved method is provided for efficiently precipitating metal powder selected from the group consisting of nickel, cobalt and copper from aqueous solutions using sulfur-free hydrogen at elevated pressure and temperature, the improvement residing in adding to the solution a small but effective amount of a catalyst as an anti-plating agent, said catalyst comprising an alkali metal or ammonium salt of a copolymer of maleic acid anhydride and an unsaturated branched chain aliphatic olefinic hydrocarbon containing 4 to 10 carbon atoms.

Abstract: High quality factor, low torsion modulus alloys especially useful as tension bands for measuring are composed essentially of platinum or palladium admixed with at least one element of Groups III, IV, V and VI of the Periodic Table excluding boron, carbon, nitrogen and oxygen.

Abstract: An abrasion and scuff resistant piston ring having an outer peripheral surface formed by the simultaneous spray deposition of from 30 to 95% of molten molybdenum and from 5 to 70% of molten iron alloy.

Abstract: Zinc alloys having improved physical properties consist essentially of 10 to 30 percent by weight of aluminum, 0.3 to 10 percent by weight of copper, 0.01 to 0.1 percent by weight of magnesium, 0.005 to 0.3 percent by weight of at least one of the metals calcium, .[.lithium.]. and sodium, and the balance zinc.