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: An unsupported particulate catalyst especially useful for methanation reactions is prepared by a method comprising fluid-bed roasting agglomerates of nickel sulfide to form a particulate precursor material which can be reduced to composite particles consisting essentially of a nickel-oxide core with a then coherent adherent layer of nickel thereon, the reduced particles being characterized at the surface by the presence of microcapillary pores interconnecting with each other and the outer surface of the particles.

Abstract: Special heat resistant alloys containing nickel, chromium, iron, titanium, aluminum, carbon, silicon, manganese, calcium and tungsten afford high temperature carburization, oxidation and sulfidation resistance, characteristics which render the alloys particularly suitable for use in contact with such media as hydrocarbons, high sulfur content feed stocks and the like.

Abstract: A composite electrode having a structural electrode member with at least a portion of one surface of the electrode member constructed from a continuous matrix of an anodically passivatable metal infiltrated by a metal capable of forming an electroconductive oxide and having the infiltrating metal at the electrode surface oxidized such that an electric current path is provided through the oxidized surface of the matrix metal. In one embodiment the matrix metal is an electrochemical valve metal, e.g., titanium and the infiltrating metal is lead. Applications for the composite electrode include battery grids and electrochemical processing electrodes.

Abstract: Nickel-base alloy containing chromium, aluminum, titanium, molybdenum, cobalt and tungsten has combination of strength and ductility at elevated temperatures, particularly including stress-rupture strength at 980.degree. C. and ductility at 760.degree. C., along with resistance against oxidation and to hot corrosion by combustion products from jet engine fuels. The alloy is especially useful in production of gas turbine rotor blade castings.

Abstract: Apparatus and method for water atomizing molten metal to provide a low oxygen metal powder. A molten metal stream is introduced to an atomization vessel containing a pressurized inert gas. The metal stream is atomized by impingement of high pressure water within the atomization vessel. The atomization vessel has an exit aperture located so that the slurry of water and metal powder can exit from the atomization vessel only after deflection within the atomization vessel. Inert gas contained within the atomization vessel and entrapped within the slurry during atomization begins to leave the slurry during deflection, the inert gas returning to the atomization vessel atmosphere. The inert gas removal process continues after passage through the exit aperture and entrance into a closed degassing vessel.

Abstract: A process is provided for treating a matte for selective extraction of nonferrous metals using a single stage oxidative pressure leach wherein leaching is carried out in a continuous manner and relatively mild conditions on an aqueous slurry of the matte having a specific sulfur adjustment, having copper present in the aqueous phase, and having a final pH of less than .about.4 but not less than .about.3.

Abstract: The invention provides a bath that is operable at, or close to, pH 7 to deposit a coating of ruthenium on a substrate, e.g. the contacts of electrical switches, which does away with the need to provide a protective coating on the substrate prior to ruthenium plating. The bath consists essentially of (i) a compound or a complex that contains a nitrogen bridge linkage joining together two ruthenium atoms and (ii) an aqueous solution of oxalic acid or an oxalate.

Abstract: A nickel-base superalloy containing 14 to 22% chromium, 5 to 25% cobalt, 1 to 5% tungsten, 0.5 to 3% tantalum, 2 to 5% titanium, 1 to 4.5% aluminum, the sum of the titanium plus aluminum being 4.5 to 9%, up to 2% niobium, about 0.35 to 1.2% boron, up to 3.5% molybdenum, up to 0.5% zirconium, up to 0.2% total of yttrium and lanthanum, up to 0.1% carbon, at least 0.05% of at least one element of the group of hafnium and vanadium with the maximum being about 2.2% hafnium and 2% vanadium, the balance of the alloy being essentially nickel.

Abstract: A cobaltic oxide hydrate is mixed with spent sulfate electrolyte and the slurry is sparged with air to liberate any entrained chloride ions as gaseous chlorine. Thereafter a reducing agent is used to enable dissolution of the cobalt and obtaining of a chloride-free solution from which, after purification, cobalt can be electrowon.

Abstract: An essentially planar electrowinning anode made of infiltrated sintered metal, e.g. lead infiltrated sintered titanium having longitudinally extending bars of lead metallurgically bonded to and shielded by the infiltrated metal. Advantageously the anode is made up of at least two strips of lead infiltrated, sintered titanium with a lead bar bridging the junction of the strips.

Abstract: A flash smelting burner is provided which consists of an assembly of feed pipes for solids and gas, which discharge into a mixing tunnel, the feed pipes being concentric at the point of discharge so that gas is fed into the mixing tunnel from an annular opening between the feed pipes, the solids feed pipe having a bend therein and being provided with apertures which enable a small proportion of the gas stream to enter the solids feed pipe at the bent region thereof.

Abstract: A primary galvanic cell (10) displaying superior leak-resistant characteristics. A molded battery container (12) having one open end (14) is sealed by an end cap (18) having both insulating (22) and conducting (20) properties. An electrode (24), integrally affixed to the end cap (18) and in electrical registry therewith, is disposed within the cell (10).

Abstract: A process for electrodepositing cadmium and selenium onto a material suitable for use as a photoelectrode in a photovoltaic cell. The plating electrolyte, in one embodiment, consists essentially of an acid citrate bath including hydrated citric acid, hydrated sodium citrate, hydrated cadmium chloride and selenious acid. The deposit may be subsequently heat treated.

Abstract: A titaniferous ore concentrate or slag is fed, together with sulfuric acid, into a heated pelletizer wherein the sulfation reaction occurs simultaneously with pellet formation.

Abstract: A sensitive portable detector for nickel carbonyl is provided which relies on chemiluminescence produced in the presence of ozone and carbon monoxide by pulse-modulating the carbon monoxide feed to the reactor chamber and detecting the resulting modulation of the output signal. The instrument is thus made insensitive to any NO which may be present in the gas sample.

Abstract: A process and products produced thereby, e.g., alumina tools, in which ceramic powder particles are subjected to high transmissive energy milling under dry conditions and with given ratios of impacting media to powder, the milling being conducted for a period beyond the threshold point of the powder constituents, whereby dense, composite powder particles are obtained having an interdispersion of initial constituent particles, a large internal interfacial surface within individual product powder particles, etc.

Abstract: An electrode for water electrolyzers comprising a steel base having a sintered porous layer of nickel, nickel-iron or iron on the steel base and having an electrochemically formed oxidic layer or hydrogen saturation associated with the sintered layer.

Abstract: Discloses the use of nickel-iron alloy strike deposits on directly plateable plastics whereby difficulties encountered in plating directly plateable plastics are obviated and plated objects suitable for service conditions 3 and 4 or equivalent service conditions are provided.

Abstract: Discloses the use of nickel-cobalt alloy strike deposits especially ultra-thin nickel-cobalt alloy strike deposits on directly plateable plastics whereby difficulties encountered in plating directly plateable plastics are obviated and plated objects suitable for service conditions 3 and 4 or equivalent service conditions are provided. Especially advantageous results are obtained when the strike deposit contains at least about 30% cobalt.