Abstract: An electrically conductive composite material is formed by dispersing in a matrix metal the other metal which is not solid soluble with the matrix metal. The other metal is finely divided to an extent of not excessively lowering the conductivity and is mixed in the matrix metal in a particle amount with which respective particles keep a mutual distance effective to strengthen the composite material, whereby the material is sufficiently improved in the mechanical strength and wear resistance and remarkably reduced in the high temperature deformation. Such conductive composite material can be obtained through a melt atomization.

Abstract: Alloys suitable for dental or medical devices are disclosed. A typical alloy comprises about 35 to about 60% by weight of zirconium, about 1 to about 60% by weight of palladium and about 1 to about 60% by weight of ruthenium.

Abstract: Intermetallic compounds of ruthenium and aluminum are disclosed comprising about 40 to 51 atomic percent aluminum and the balance substantially ruthenium. The intermetallic compounds have a high hardness up to about 1150.degree. C. and have good room temperature toughness. Hardness is improved by scandium additions up to about 7 atomic percent. Hardness is improved while maintaining good room temperature toughness by boron additions up to about 1 atomic percent.

Abstract: The coercivity of magnetic alloys formed from platinum, cobalt, and boron is enhanced by incorporating from 12 to 14 percent of boron together with amounts of platinum and cobalt such that the ratio of platinum to cobalt is from 0.90 to 1.2. The magnetic alloy is formed by rapid solidification of a homogeneous melt, and the solidified casting is heat treated to improve microstructure and increase coercivity.

Abstract: An electrically conductive composite material is formed by dispersing in a matrix metal another metal which is insoluble or slightly soluble with the matrix metal. The other metal is finely divided to an extent of not excessively lowering the conductivity and is mixed in the matrix metal in a particle amount such that respective particles keep a mutual distance effective to strengthen the composite material. The material is thereby sufficiently improved in the mechanical strength and wear resistance and remarkably reduced in high temperature deformation. Such conductive composite material can be obtained through a melt atomization.

Abstract: A nickel-titanium-palladium based alloy for converting heat energy into mechanical energy. The alloy exhibits shape memory. The alloy contains palladium to raise the temperature at which the alloy flexes between a deformed condition at a relatively colder temperature and a nondeformed condition at a relatively higher temperature. The alloy is characterized by including boron for increasing the fabricability of the alloy.

Abstract: A platinum article, especially an article of jewellery, has its surface region modified to improve its scratch resistance by the addition of at least one element which forms an intermetallic compound with platinum, especially aluminum and chromium. The surface region may be formed by the pack cementation chemical vapor deposition process.

Abstract: A method of preparing a superconducting oxide by combining the metallic elements of the oxide to form an alloy, followed by oxidation of the alloy to form the oxide. Superconducting oxide-metal composites are prepared in which a noble metal phase intimately mixed with the oxide phase results in improved mechanical properties. The superconducting oxides and oxide-metal composites are provided in a variety of useful forms.

Abstract: The disclosed permanent magnet has a coercive force of larger than 500 Oe, a residual magnetic flux density of larger than 5 kG, and a maximum energy product of larger than 2 MGOe, and it consisting essentially of 48.about.66.9 Atm % of iron, 33.about.47 Atm % of platinum, and 0.1.about.10 Atm % of niobium. It includes a crystal structure of an incomplete single .gamma..sub.1 phase of a face-centered tetragonal system due to either the composition thereof or heat treatment applied thereto. The permanent magnet is made by heating an alloy of the above main composition at 900.degree..about.400.degree. for one minute to ten hours and quenching the alloy at a high speed of faster than 30.degree. C./minute but slower than 2,000.degree. C./sec.

Abstract: Reactive metal silver alloys containing controlled levels of copper, aluminum or mixtures thereof liquidus temperatures in the range of from about 750.degree. C. to about 950.degree. C., are ductile and after brazing are relatively free of hard dispersed phases. The level of reactive metal is kept below 4% by weight and from about 0.25% to about 2.5% is preferred.

Abstract: According to a method of dispersion hardening copper, silver or gold, melts on the basis of the matrix metals with stoichiometric additions of boron and boride-forming metals are superheated by 300.degree. to 750.degree. C. and subsequently subjected to extremely rapid solidification at a rate of at least 10.sup.3 to 10.sup.4 .degree.C. per second. The boride-forming metals used are preferably titanium and/or zirconium. An excess of preferably about 5 to 20% of boride-forming metal over the stoichiometric amount yields particularly favorable products.

Abstract: Reactive metal-precious metal ductile alloys containing controlled amounts of Cu and Ni and mixtures thereof are suitable for brazing ceramics, other non-metallic and metallic materials.

Abstract: Reactive metal silver alloys containing controlled levels of copper, aluminum or mixtures thereof liquidus temperatures in the range of from about 750.degree. C. to about 950.degree. C., are ductile and after brazing are relatively free of hard dispersed phases. The level of reactive metal is kept below 4% by weight and from about 0.25% to about 2.0% is preferred.

Abstract: The disclosed alloy has a temperature coefficient of electric resistance h an absolute value smaller than 100 ppm/.degree.C. in a temperature range between the order-disorder transformation point and melting point thereof, which alloy is made by molding an alloy consisting of 59.0-88.0 wt. % of palladium and the remainder of iron with a small amount of impurities, quenching the molded alloy from a temperature between the above-mentioned order-disorder transformation point and melting point to room temperature, cold working the quenched alloy for shaping, and annealing the shaped alloy.

Abstract: Brazing alloys containing up to a specified amount of a reactive metal selected from the group consisting of titanium, zirconium, vanadium and mixtures thereof and only one metal selected from the group consisting of silver, gold, palladium, iron, nickel, copper and aluminum are ductile and can be rolled into foils.

Abstract: The disclosed alloy has a temperature coefficient of electric resistance with an absolute value smaller than 100 ppm/.degree.C. in a temperature range between the order-disorder transformation point and melting point thereof, which alloy is made by molding an alloy consisting of 59.0-88.0 wt. % of palladium and the remainder of iron with a small amount of impurities, quenching the molded alloy from a temperature between the above-mentioned order-disorder transformation point and melting point to room temperature, cold working the quenched alloy for shaping, and annealing the shaped alloy.

Abstract: Electrical contact tape having a base portion of nickel, copper or nickel-copper alloy and an overlay of metallic material on said base portion is improved by utilizing for such overlay a gold-nickel alloy of which the precentage by weight of nickel is in the range of from about 1.8% to 2.3%, the balance of the alloy being gold with or without one or more other metals other than nickel in trace amounts insufficient to produce precipitation thereof out of solution in the gold. Nibs of such tape are bonded to a leaf spring to form an electromechanical junction therewith, the gold-nickel alloy overlay of the nib being on its side away from the spring to provide an improved electrical contact surface for the spring contact assembly formed by such nib and spring.

Abstract: There are needed materials based on Ag/SnO.sub.2 to replace the known Ag/CdO materials for electrical contact on switches, which replacement materials contain an additional metal oxide component, without having to take into account an undesired temperature increase in the switching device. This is attained according to the invention with a material that contains 8-20 weight % tin oxide SnO.sub.2, 0.05-5 weight % tungsten oxide, balance silver.