Abstract: A consolidated metal-ceramic composite comprises a first phase of particles of aluminum oxide or a solid solution based on aluminum oxide uniformly distributed in a second matrix phase wherein the second matrix phase is non-reactive with aluminum oxide and contains a sufficient amount of titanium carbide at the interface between the first and second phase to prevent a chemical reaction at the interface during consolidation at the liquidus temperature and which exhibits good mechanical properties with regard to strength and toughness at high temperatures up to about 1200.degree. C.

Abstract: An abrasion resistant alloy sintered in a liquid phase, which contains, by weight, 1.5 to 4.0% C, 0.5 to 1.2% Si, 1.0% or less Mn, 2.0 to less than 20.0% Cr, 0.5 to 2.5% Mo, 0.2 to 0.8% P, and the balance of Fe. The alloy is suitable for fabricating sliding parts in internal combustion engines, such as valve mechanisms.

Abstract: A generator of radionuclides comprises a generator column (10) containing the radionuclide and provided with an inlet (12) and an outlet (14) for eluent, first and second reservoirs (16, 18) for eluent, and connecting means for passing a pre-determined column of eluent from the second reservoir through the generator column. A part defining the second reservoir, which part may be the second reservoir itself, is rotatable to determine the volume of eluent passed through the column. The second reservoir is preferably shaped as a sector of a cylinder rotatable around a horizontal axis.The generator is well suited for vacuum elution of a variable pre-determined volume of eluent into a single size collection vial with subsequent drying of the generator column.

Abstract: A surface-coated cutting member includes a substrate, a metal layer vapor-deposited on a surface of the substrate and a hard coating vapor-deposited on the metal layer. The substrate is made of hard material selected from the group consisting of tungsten carbide-based cemented carbide, titanium carbo-nitride based cermet and high speed steel. The metal layer is made of metal selected from Group IVa of the Periodic Table and has an average thickness of 0.1 to 1 .mu.m. The hard coating has an average thickness of 1 to 9 .mu.m, and includes an inner layer of an average thickness of 0.2 to 4 .mu.m vapor-deposited on the metal layer, an intermediate layer of an average thickness of 0.2 to 4 .mu.m vapor-deposited on the inner layer and an outer layer of an average thickness of 0.2 to 3 .mu.m vapor-deposited on the intermediate layer.

Abstract: A vanadium-containing power tool steel is disclosed. The steel is compacted to full density at high temperature and presence and contains M.sub.6 C or M.sub.7 C.sub.3 carbides. The carbides have an effective maximal size of 4 to 15 microns.

Abstract: A tough cermet made from 20-92 weight % of TiC and/or TiCN, 5-50 weight % of WC and 3-30 weight % of an iron-group metal. This tough cermet has a three phase grain microstructure consisting of a core phase rich in TiC and/or TiCN, an intermediate phase rich in WC and surrounding the core phase, and an outer phase made of (Ti,W)C and/or (Ti,W)CN and surrounding the intermediate phase. Because of this three-phase microstructure, the cermet has high toughness without sacrificing hardness. It is prepared by using WC powder of as fine as less than 3 .mu.m, without taking the course of forming a solid solution of TiC and/or TiCN and WC and pulverizing it.

Abstract: An ore containing an increased percentage of mineral values, particularly uranium values, is separated from an ore containing a lower percentage of such mineral values by contacting the ore containing the lower percentage of mineral values with a polar solvent, particularly water, and a nonpolar solvent, such as an isoparaffin mixture, and separating a polar solvent phase containing a portion of the contacted ore from a nonpolar solvent containing another portion of the contacted ore. The ore may be a total ore containing both coarse and fines or a fines fraction which has been separated from a total ore as by wet classification. Where a total ore is treated in accordance with the present invention, in one embodiment of the invention, a coarse ore fraction can be separated from the total ore either during the contacting step or the separating step.

Abstract: Amorphous metal-ceramic and microcrystalline metal-ceramic composites are synthesized by solid state reaction-formation methods. These metal-ceramic composites are characterized by a composition that ranges from about 75 to about 99.9 percent ceramic in about 0.1 to about 25 percent amorphous or microcrystalline metal binder phase.

Abstract: A sintered stainless steel exhibiting improved resistance to stress corrosion cracking which comprises a matrix phase and a dispersed phase and a process for manufacturing same are disclosed. The dispersed phase is of an austenitic metallurgical structure and is dispersed throughout the matrix phase which is comprised of an austenitic metallurgical structure having a steel composition different from that of the dispersed phase or a ferrite-austenite duplex stainless steel.

Abstract: Metallic sintered parts with hollow structure and high density and toughness can be produced easily by kneading a raw metallic powder with an aqueous solution of an organic binder, extruding the resulting kneaded mixture, removing the organic binder from the extruded product and sintering the binder removed extruded product.

Abstract: Form-locking means and process for joining same to a subcaliber projectile in a peripheral region thereof. The form-locking means consists of a material in the form of a n-phase sintered alloy having a high content of at least one heavy metal, wherein n.gtoreq.2. The material forming the form-locking means in the peripheral region of the subcaliber projectile form at least one further alloy phase. The form-locking means includes interlocking lands and grooves, and are joined to the periphery of the subcaliber projectile in the form of a layer of predetermined thickness which can be joined to the projectile surface by means of explosion welding.

Abstract: A cathode suitable for use in a lithium electrochemical cell is made from a ixture of active cathode material, carbon, and non fluorinated linear chain polymer by a method including the steps of(A) dissolving the non fluorinated linear chain polymer in a non polar solvent at a temperature near the melting point of the polymer,(B) adding the active cathode material and carbon and evaporating the solvent, and(C) grinding the dried mixture into a fine powder and making it into a cathode by pressing the powdered mixture onto both sides of an expanded metal screen and then cutting to the desired dimensions.The cathode can be combined with lithium as the anode and a solution of 0.8 mol dm.sup.-3 LiAlCl.sub.4 in a mixed organic solvent of 24 mass percent 4-butyrolactone in 1,2 dimethoxyethane as the electrolyte to provide a mechanically stable, relatively inexpensive lithium electrochemical cell having good cell performance.

Abstract: This disclosure pertains to an electrodeposited chromium composite having ternating layers of high contraction and low contraction chromium. The laminated composite properties are enhanced because of thin layers of the same metal existing under different states of hardness, stress, orientation and microstructure. Thin layers of HC chromium are produced with a random orientation, low residual stress, and crack-free structure. The alternating LC chromium layers tend to duplicate the random structure of HC chromium through epitaxial growth. Accordingly, crack-free laminated chromium are produced having hardness values ranging from 655 to 1084 Knoop Hardness Numbers. By comparison, conventional high-contraction chromium shows hardness values between 1000 and 1100 KHN. However, the latter deposits are invariably micro-cracked.

Abstract: Impressed current cathodic protection systems employing an anode having a cobalt spinel type surface, said surface having the formula: M.sub.x Z.sub.y Co.sub.(3-(x+y)) O.sub.4, where M is a metal or a mixture of two or more metals selected from the group of metals contained in Groups IB, IIA, and IIB of the periodic table of the elements, where Z is a metal or a mixture of two or more metals selected from the group of metals contained in Group IA of the periodic table of the elements, where 0.ltoreq.x.ltoreq.1, where 0.ltoreq.y.ltoreq.0.5, and where 0.ltoreq.(x+2y).ltoreq.1.

Abstract: The formation of thin-film resistors by the ion implantation of a metallic conductive layer in the surface of a layer of phosphosilicate glass or borophosphosilicate glass which is deposited on a silicon substrate. The metallic conductive layer materials comprise one of the group consisting of tantalum, ruthenium, rhodium, platinum and chromium silicide. The resistor is formed and annealed prior to deposition of metal, e.g. aluminum, on the substrate.

Abstract: A composite target for an X-ray tube has a graphite substrate portion and a metal portion, the two portions being bonded together by successive interspersed layers of platinum and tantalum. The platinum layer is disposed between the graphite substrate portion and the tantalum layer. The tantalum layer acts to bond the metal portion to the platinum layer and also acts as an isolator to prevent the formation of carbides by migration through the bonding layers.

Abstract: A moisture absorbing, anti-arcing compound comprises a mixture of a moist active isocyanate resin and a generic anti-arcing compound. The isocyanate resin reacts with residual moisture in a high voltage ceramic insulator, thus tying it up chemically. This prevents diffusion of the moisture into the anti-arcing compound and resultant degradation. The compound according to this invention is especially useful for ceramics which may not be baked dry at elevated temperatures.

Abstract: An epitaxial layer is used to place the surface of a crystal in compression o as to greatly increase the durability of the crystal such as a laser medium crystal.

Abstract: Radiation pellets having an outer shell, preferably, of Mo, W or depleted U nd an inner filling of lithium hydride wherein the outer shell material has a greater melting point than does the inner filling material.

Abstract: Dislocation and etch channel-free quartz resonator blanks are made from a cultured quartz stone by visualizing the dislocation-free areas of the cultured quartz stone by X-ray topography, cutting seed plates for the next generation of crystal growth from the dislocation-free areas of the cultured quartz stone, growing dislocation free quartz from said seed plates using conventional growth techniques, and cutting dislocation-free quartz resonator blanks from said dislocation-free quartz.