Abstract: A conductor for a fuse has a main composition of a Pb-Ag alloy containing silver of 0.5 to 20 wt. % and lead and unavoidable impurity for the rest. A conductor for a fuse in another example includes a Pb-Ag-Cu or/and Te alloy obtained by adding copper or/and tellurium of 0.05 to 1 wt. %, respectively, to the above mentioned Pb-Ag alloy. Each of those conductors for fuses has a diameter in the range from 0.05 to 0.3 mm and it is used as a fuse contained in a capacitor of a tantalum chip for example. Those conductors for fuses have excellent pre-arcing time/current characteristics and good drawability.

Abstract: There is disclosed a method for plastic-working a heat-resistant alloy containing boron, which is in the form of an ingot. The ingot of the alloy is first subjected to hot working. Subsequently, annealing, acid-washing and cold working are carried out on the hot-worked blank material to provide a worked product. The hot working and the annealing are both carried out at a temperature ranging from 1,000.degree. C. to 1,150.degree. C.

Abstract: An alloy for building up a valve according to the present invention comprises: with respect to the total weight of the alloy taken as 100%, 30 to 40% by weight of chromium; 15 to 31% by weight of nickel; 7 to 20% by weight of molybdenum; 0.7 to 2.2% by weight of carbon; 1.5% or less by weight of silicon; and balance of iron and inevitable impurities. The alloy is superior in hardness at high temperatures, PbO resistance and PbO+PbSO.sub.4 resistance. In addition, the alloy is suitable for powder buildup welding.

Abstract: Powders for producing hard materials in short reaction times are provided, especially for use in electric arc spraying. The powders are produced by bonding metallic and non-metallic starting materials to one another by spray-drying or agglomeration, using an organic or inorganic binder. The metallic starting materials are selected from the group consisting of Al, Ni, Ti, Cr, Mo, V, Zr and Ta, whereas the non-metallic starting materials are selected from the group consisting of Cr.sub.3 C.sub.2, WC, C, SiC, TiB.sub.2, CrB.sub.2, B.sub.4 C, TiC, VC, TiN and Si.sub.3 N.sub.4. In this manner, the metallic and non-metallic starting materials react exothermically during electric arc spraying to produce a hard substance.

Abstract: Method and apapratus for inhibiting stress corrosion cracking adjacent weldments in steel workpieces such as stainless steel pipe through generation of a controllable throughwall temperature differential by exposure of one workpiece surface to extermally generated radiant heat while maintaining a flow of coolant fluid past the other surface thereof.

Abstract: The present invention provides an improved casting alloy for use in costume jewelry and jewelry samples. In accordance with the present invention, a gold colored metal alloy is disclosed which is tarnish resistant and consists of the following ingredients such as, 75 to 85% copper, 5 to 15% nickel, 0 to 12% indium, and 0 to 12% zinc. It is also desirable to add approximately 0.01% iron and/or 0.05% silicon to act as a grain refiner and fluidity enhancer respectively. The alloy in accordance with the subject invention is a rich gold color which approximates a fourteen carat alloy. In addition, tarnish resistance and workability is greatly increased.

Abstract: The present invention is related to a composition and methods for producing highly pure, high temperature superconducting materials having the general formula MBa.sub.2 Cu.sub.3 O.sub.7-x, where M is yttrium or a rare earth element and x is from 0 to 0.5. The superconducting material is produced by first obtaining a solution of yttrium or rare earth element and copper. Next a solution of barium is obtained. The two solutions are heated and mixed together forming a precursor precipitate of the superconducting material. Subsequently, in one embodiment of the invention, the precipitate is recovered, calcined, sintered and slow cooled in oxygen or air. This produces a material having a desirable orthorhomic structure which is superconductive at high temperatures.Because no organic solvents are used and no pH control other than the amount of barium in the solution is employed, it is possible to provide a highly pure superconducting material.

Abstract: A method for the manufacture of copper base alloys having improved resistance to thermally induced softening is provided. The alloy composition is selected so that the alloy undergoes either a peritectic or eutectic transformation during cooling. The solidification rate is controlled so that the second phase forms as a uniform dispersion of a relatively small dispersoid. The dispersoid inhibits recrystallization resulting in an alloy less susceptible to softening at elevated temperatures.

Abstract: A zirconium alloy that has sufficient corrosion resistance, strength and stress relaxation property for use as a component of a pressurized water nuclear reactor fuel assembly is disclosed. This alloy consists essentially of 0.2 to 0.91% Sn, 0.18 to 0.6% Fe, 0.07 to 0.4% Cr, one or both of 0.05 to less than 0.5% and 0.01 to 0.2% Ta, one or both of 0.05 to 1% V and 0.05 to 1% Mo, with the balance being Zr and incidental impurities, all percentages being based on weight.

Abstract: A method for forming a composite having a matrix which is stronger and which is resistant to cracking is disclosed. The composite is reinforced by silicon carbide fibers. The silicon carbide fibers are first RF plasma-spray coated with a niobium metal and the matrix metal of titanium base alpha-2 crystal structure is next RF plasma-spray deposited over the niobium coated SiC fibers to form a layer of Ti base metal reinforced by SiC fibers. A plurality of layered structures are consolidated by heat and pressure into a composite structure.

Abstract: This invention relates to a rapidly solidified product comprising a second phase in both a stable particulate form and a metastable flake form dispersed in an intermetallic matrix.

Abstract: The present invention provides a corrosion-resistant and heat-resistant aluminum-based alloy thin film consisting of a composite having a composition represented by the general formula, Al.sub.a Ni.sub.b X.sub.c N.sub.d, wherein: X is a metal element selected from Y and Zr and a, b, c and d are as follows, in atomic percentages: 70.ltoreq.a.ltoreq.93, 0.5.ltoreq.b.ltoreq.7.5, 0.5.ltoreq.c.ltoreq.12 and 1.ltoreq.d.ltoreq.18, the composite being at least 50% (by volume) composed of an amorphous phase. The thin films are produced by depositing a material having the composition represented by the above-defined general formula onto a substrate by a thin film formation technique, such as sputtering, vacuum deposition or ion plating. In the production process, only nitrogen may be supplied as gas. The novel aluminum-based alloy thin film has superior corrosion-resistance and heat-resistance together with high levels of hardness and wear resistance.

Abstract: Disclosed is a metal-based composite material comprising aluminum or an aluminum alloy combined with a whisker of aluminum borate represented by the chemical formula of 9Al.sub.2 O.sub.3.2B.sub.2 O.sub.3 or 2Al.sub.2 O.sub.3.B.sub.2 O.sub.3. This composite material has excellent mechanical properties such as high tensile strength and high hardness.

Abstract: In the manufacture of formable steel strip having a thickness between 0.5 and 1.5 mm, the following process steps are performed sequentially in a continuous process:(a) in a continuous casting machine forming liquid steel into a hot slab having a thickness of less than 100 mm,(b) hot rolling the hot slab from step (a), in the austenitic region and below 1100.degree. C., to form strip having a thickness of between 2 and 5 mm,(c) cooling the strip from step (b) to a temperature between 300.degree. C. and the temperature T.sub.t at which 75% of the steel is converted to ferrite,(d) rolling the cooled strip from step (c) at said temperature between 300.degree. C. and T.sub.t with a thickness reduction of at least 25% at a rolling speed not more than 1000 m/min.,(e) coiling the rolled strip from step (d).

Abstract: Disclosed is a metal matrix composite comprising randomly oriented polymer fibers and a metal alloy surrounding the polymer fiber. The composite is formed by the method of manufacturing comprising the steps of: (1) providing polymer fibers; (2) providing a liquid-phase metal; (3) mixing the liquid-phase metal and the polymer fibers; and (4) allowing the liquid-phase metal to solidify and form a metal matrix composite. In a preferred embodiment, the polymer fibers are liquid crystal polymer fibers.

Abstract: Silicon carbide-based bodies are produced by forming a porous compact of silicon carbide, a carbide of a metal, and carbon, and infiltrating the compact with a molten mixture comprising the metal and silicon. The metal may be selected from: titanium, zirconium, hafnium, molybdenum, niobium, tantalum, tungsten, and vanadium, and the infiltration temperature may be between 1900.degree. C. and 2100.degree. C.

Abstract: An electroplated steel sheet having a plurality of coatings, excellent in workability, corrosion resistance and water-resistant paint adhesivity, which comprises:an iron-chromium-zinc alloy coating as a lower layer, having a coating weight of from 0.1 to 40 g/m.sup.2 per side, formed on the surface of a steel sheet, consisting essentially of:iron: from 3 to under 15 wt. %,chromium: from 0.1 to 1 wt. %, andthe balance being zinc and incidental impurities;another iron-chromium-zinc alloy coating as an intermediate layer, having a coating weight of from 20 to 59.9 g/m.sup.2 per side, formed on the iron-chromium-zinc alloy coating as the lower layer, consisting essentially of:iron: from 10 to 40 wt. %,chromium: from over 1 to under 30 wt.

Abstract: Low density, high temperature and aluminum-rich intermetallic alloys displaying excellent elevated temperature properties, including oxidation resistance, are disclosed. Based on the aluminum/titanium system, specifically modifications of Al.sub.3 Ti compositions, useful alloys are derived from changes in crystal structure and properties effected by selected-site substitution alloying with manganese and/or chromium, and, where used, vanadium, or equivalent site-substituting alloying elements.

Abstract: A high-coercivity thin-film magnetic recording medium, and method of producing the medium, is disclosed. The medium has a sputtered chromium underlayer, preferably about 600-1,000 .ANG. thick, and a sputtered magnetic layer, preferably about 200-800 .ANG. thick, composed of an alloy containing between 70-80% cobalt, 10-20% chromium, 8-20% platinum, and 2-10% tantalum, formed on the chromium underlayer. The medium is characterized by high coercivity, resolution, amplitude and loop squareness value, and low bit shift.

Abstract: A dispersion strengthened Cu (copper)-base alloy for a wear-resistant overlay formed on a metal substrate consists essentially of, by weight %,Ni: 5 to 30%;B: 0.5 to 3%;Si: 1 to 5%;Fe: 4 to 30%;Sn: 3 to 15% and/or An: 3 to 30%; andthe remainder being Cu and unavoidable impurities, and has a structure in which particles of boride and silicide of the Fe-Ni system are dispersed in a Cu-base matrix, and Cu-base primary crystals contain Sn and/or Zn in a solid solution state. If necessary, 0.1 to 5% of Al, 0.1 to 5% of Ti, and/or 1 to 10% of Mn may be added. 0.02 to 2% of C, and 0.1 to 10% of Cr and/or 0.3 to 5% of Ti may be further added. Instead of or along with Sn and/or Zn, 2 to 20% of Pb can be used, and nonsoluble Pb particles are uniformly dispersed between Cu-base .alpha. phase dendrites and serve as a solid lubricant.