Abstract: Ruthenium-iridium electrodeposits are prepared from aqueous acid solution containing ruthenium, iridium, a fluoborate salt, fluoboric acid, and optionally sulfamic acid. The baths are especially useful for preparing insoluble anodes.

Abstract: A bipolar electrode support structure for use in a lead acid battery is constituted by a porous matrix of valve metal, impregnated with lead or a lead alloy, and is provided on at least one surface thereof with a rim-portion at which little or no lead is exposed. The rim-portion is used to maintain an electrolyte-tight seal in operation.

Abstract: A process and products produced thereby, e.g., ferrites, 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: The tensile ductility of low chromium substantially precipitation hardened nickel-base alloys within the temperature range of 600.degree. C. to 900.degree. C. is improved through the incorporation in the alloys of controlled amounts of yttrium.

Abstract: Iridium compounds are produced by refluxing a diammonium hexahalo salt of iridium and sulfamic acid in an aqueous medium for more than thirty hours. When the diammonium hexachloro salt of iridium is used, the iridium product is an olive green salt having a melting point above 350.degree. C. The iridium products are useful as constituents of electroplating baths.

Abstract: A granulate consisting of smooth irregularly shaped granules is produced by preparing a molten bath of nickel and/or cobalt containing amounts of carbon and silicon which are correlated so that:8.03 C-4.42 C.sup.2 +7.23 Si>3.6pouring the molten alloy at a temperature 50.degree.-100.degree. C. above its liquidus temperature onto the surface of a pool of water which is agitated and maintained at 30.degree.-60.degree. C.

Abstract: A copper-containing sulfidic material is dead-roasted at a temperature of at least 750.degree. C. and the resulting calcine is leached in a sulfuric acid solution to dissolve most of the copper in preference to any iron, nickel and cobalt in the material.

Abstract: Powder rolling apparatus, for the production of strip equal in width to the roll length, is provided with edge restraint devices in the form of cylindrical blocks mounted in the roll gap region with their axes parallel to the roll axes and rotatably driven to cause an end-face of each restraint block to move in frictional contact with the end-faces of the rolls.

Abstract: Use of a burner design featuring a tunnel of high length to diameter ratio enables the flash-smelting of sulfides to be carried out in a much more confined space than heretofore possible.

Abstract: A hydrometallurgical process for treating copper refinery anode slimes containing selenium, lead and precious metals in which a selenium product of better than 99.7% purity can be produced and the final residue is suitable for smelting to produce anodes for silver refining.

Abstract: Apparatus and method for laser welding in a controllably pure gaseous environment at sub-atmospheric as well as high pressures. A workpiece to be welded is contained within a vessel having a light transmitting means which allows passage of a laser beam into the vessel. A gas stream is introduced to the vessel through a gas inlet means and positioned so that the stream deflects ionized particles from impinging on the light transmitting means. The gas stream simultaneously serves to cool the light transmitting means. Weld debris and spent gas are exhausted through a gas exhaust means which preferably is located adjacent to the workpiece. The apparatus is particularly suited to the laser welding of oxide dispersion strengthened alloys.

Abstract: A calcium-nickel compound, CaNi.sub.5, is used to store hydrogen at sub-atmospheric pressures. Charging of the calcium-nickel compound with hydrogen can be accomplished at sub-atmospheric as well as at high pressures. Stored hydrogen can be released from a valved vessel containing calcium-nickel by application of a vacuum or by heating.

Abstract: A nickel-mischmetal-calcium compound is used to store gaseous hydrogen at pressures up to about 15 atmospheres at ambient temperatures. The Ni.sub.5 M.sub.1-y Ca.sub.y compounds have values of y ranging from about 0.2 to about 0.9. Alloys conforming to this formula contain from about 4% to about 27% mischmetal, from about 2% to about 11% calcium, up to about 15% copper, and the balance essentially nickel.

Abstract: Directed to a cable rock anchor device whereby a load-supporting cable having considerable length may be anchored in a hole to provide ceiling or wall support underground comprising cable gripping means for gripping the cable during advance of the cable and device through a hole and expandable hole gripping means in contact therewith whereby tension applied to the cable causes the cable gripping means to grip the cable more tightly and causes expansion of the hole gripping means to grip the hole wall.

Abstract: An electroforming mandrel providing exceptional resistance to mask removal in highly corrosive electrolytes. The mandrel relies on a molecular bond between a non-conductive polymer mask and the electrically conductive polymer plating surface to avoid separation of these members and to allow multiple reuse. A metal core acts as a structural member and serves to uniformly distribute current to the electrically conductive polymer.

Abstract: A composite electrode especially suitable for electrowinning processes comprising an electrically conductive substrate having on at least a part of its surface a multilayer coating, said coating comprising:(a) a barrier layer directly on the substrate;(b) a ruthenium dioxide-containing non-electrodeposited surface layer; and(c) between the barrier layer and the surface layer, an intermediate layer consisting of an electroplated ruthenium-iridium deposit, said ruthenium-iridium deposit being at least partially in an oxidized state.

Abstract: A method is provided for preparing a supported catalyst composed of a structural substrate having an adherent, coherent, coating of a catalytic material which comprises applying on the substrate a dispersion comprising a stabilized colloidal silica solution having dispersed therein a fine metal powder which contains at least two of the metals nickel, chromium, and copper as mixtures or alloys or a combination thereof, and firing the coated substrate in a protective atmosphere at an elevated sintering temperature to form an adherent, coherent, coating.

Abstract: An alloy difficult to produce by conventional electrodeposition techniques is produced by electrodepositing at least one metal selected from the group comprising nickel, up to 50% cobalt, and iron with particles incorporating metal in chemically combined state. The particles contain a reactive element, such as carbon, nitrogen, and boron, and a metallic element, such as chromium, molybdenum, and tungsten. The electrodeposit of the particles in a metal matrix is treated in a reducing atmosphere so that the particles react, releasing at least some of their incorporated metal into the matrix to form the alloy while transferring the reactive element to the reducing atmosphere.This invention relates to a process for the production of an alloy.It is known to codeposit two or more metals on a substrate by electrodeposition either as permanent coatings or as coatings subsequently removed from the substrate, such as electroforms, to form an alloy with or without diffusion heat treatment.

Abstract: A process for separating nickel and cobalt present in a sulfate solution includes using a cationic extractant to extract both metals, treating the loaded cationic extractant with an aqueous chloride or thiocyanate solution to back-extract the cobalt and thereafter recovering the cobalt from the back-extraction aqueous solution by solvent extraction or ion exchange with an anionic extractant.

Abstract: A self-shielding, flux cored arc welding electrode for joining Ni-Cr-Fe alloys and overlaying dissimilar metals. The wire has a nickel-chromium containing alloy sheath and a flux core containing special proportions of carbonates, fluorides, metal oxides, and powdered metals. Sound welds can be prepared without the use of a supplemental inert shielding gas. Welded joints provide essentially the same properties as those of the Ni-Cr-Fe base alloy.