Abstract: It is aimed at creating noble metal nanoparticles having novel shapes, sizes, and arrangements usable for catalysts, electrodes, and the like. Micelles made into rod-like shapes having semicylindrical cross-sections are formed on a carrier substrate in a self-creating manner and immobilized thereon; noble metal ions are added and diffused in the micelles to complex the micelles with noble metal ions; and a reducing agent is subsequently caused to act thereon to progress a reductive reaction of noble metal within the immobilized micelles as reaction fields, thereby growing single crystalline noble metal ultrathin-film nanoparticles on the carrier substrate by utilizing the fixed micelles having the shapes as templates, respectively.

Abstract: A manganese alloy sputtering target characterized in that oxygen is 1000 ppm or less, sulfur is 200 ppm or less and a forged texture is provided, and a method for producing a forged manganese alloy target stably by eliminating the drawbacks of manganese alloy that it is susceptible to cracking and has a low rupture strength. A manganese alloy sputtering target which can form a thin film exhibiting high characteristics and high corrosion resistance while suppressing generation of nodules or particles is thereby obtained.

Abstract: A method for producing a copper/palladium colloid catalyst useful for Suzuki couplings.

Abstract: An alloy and a gas turbine engine component comprising an alloy are presented, with the alloy comprising: palladium, in an amount ranging from about 1 atomic percent to about 41 atomic percent; platinum, in an amount that is dependent upon the amount of palladium, such that a. for the amount of palladium ranging from about 1 atomic percent to about 14 atomic percent, the platinum is present up to about an amount defined by the formula (40+X) atomic percent, wherein X is the amount in atomic percent of the palladium, and b. for the amount of palladium ranging from about 15 atomic percent up to about 41 atomic percent, the platinum is present in an amount up to about 54 atomic percent; and the balance comprising rhodium, wherein the rhodium is present in an amount of at least 24 atomic percent; wherein the alloy comprises a microstructure that is essentially free of L12-structured phase at a temperature greater than about 1000° C.

Abstract: A hard precious metal alloy member is constituted of a gold alloy, which has a gold Au content of from 37.50 to 98.45 wt %, and contains a hardening additive in a range of not less than 50 ppm but less than 15,000 ppm, wherein the hardening additive is constituted of gadolinium Gd only, or gadolinium Gd and at least one element selected from the group consisting of rare-earth elements other than Gd, alkaline-earth elements, silicon Si, aluminum Al, and boron B.

Abstract: The present invention is directed to a precious metal sputtering target having a columnar crystallographic microstructure such that crystals are grown in a direction normal to the sputtering surface in order to solve conventional problems. The high-purity sputtering target of the present invention prevents chipping of a minute cluster mass that occurs in a sputtering target produced through casting or powder metallurgy; produces thin film of excellent quality; and has considerably reduced internal defects.

Abstract: A gamma radiation source comprising selenium-75 or a precursor therefore, wherein the selenium is provided in the form of one or more thermally stable compounds, alloys, or mixed metal phases.

Abstract: A group of alloys suitable for use in a high-temperature, oxidative environment, a protective coating system comprising a diffusion barrier that comprises an alloy selected from the group, an article comprising the diffusion barrier layer, and a method for protecting an article from a high-temperature oxidative environment comprising disposing the diffusion barrier layer onto a substrate are presented.

Abstract: An alloy and a gas turbine engine component comprising an alloy are presented, with the alloy comprising from about three atomic percent to about nine atomic percent of at least one precipitation-strengthening metal selected from the group consisting of zirconium, niobium, tantalum, titanium, hafnium, and mixtures thereof; from about one atomic percent to about five atomic percent ruthenium; and the balance rhodium; the alloy further comprising a face-centered-cubic phase and an L12—structured phase.

Abstract: A group of alloys suitable for use in a high-temperature, oxidative environment, a protective coating system comprising a diffusion barrier that comprises an alloy selected from the group, an article comprising the diffusion barrier layer, and a method for protecting an article from a high-temperature oxidative environment comprising disposing the diffusion barrier layer onto a substrate are presented.

Abstract: An alloy comprising rhodium, aluminum, and chromium, wherein a microstructure of the alloy comprises a face-centered-cubic phase and a B2-structured phase and is essentially free of an L12-structured phase at temperatures greater than about 1000° C., and a gas turbine engine component comprising the alloy.

Abstract: An alloy comprising rhodium, aluminum, and chromium, wherein a microstructure of the alloy comprises a face-centered-cubic phase and a B2-structured phase and is essentially free of an L12-structured phase at temperatures greater than about 1000° C., and a gas turbine engine component comprising the alloy.

Abstract: An alloy and repair material comprising the alloy, articles comprising the alloy and repair material, and methods for repairing articles including provision of the alloy as repair material are described, with the alloy comprising ruthenium, nickel, aluminum, and chromium, wherein a microstructure of the alloy is essentially free of an L12-structured phase at temperatures greater than about 1000° C. and comprises an A3-structured phase and up to about 40 volume percent of a B2-structured phase.

Abstract: An alloy and a gas turbine engine component comprising an alloy are presented, with the alloy comprising from about three atomic percent to about nine atomic percent of at least one precipitation-strengthening metal selected from the group consisting of zirconium, niobium, tantalum, titanium, hafnium, and mixtures thereof; from about one atomic percent to about five atomic percent ruthenium; and the balance rhodium; the alloy further comprising a face-centered-cubic phase and an L12-structured phase.

Abstract: A soft magnetic thin film having a compositional formula FeaBbNc, wherein a, b and c each denote atomic percent and B denotes at least one of Co, Ni and Ru, and wherein the compositional range is given by 0<b≦5, and 0<c≦5. The film may exhibit uniaxial anisotropy with a uniaxial anisotropy field strength of 1-5 Oe. The film has a coercivity 2.5-4 Oe or less and a saturated magnetic flux density B25 of at least 16 kG measured at a magnetic field of 25 Oe. The film is produced by subjecting a deposited thin film of the compositional formula to heat treatment at a temperature of 220 to 450° C., within or without magnetic field and, has an average crystal grain size of not more than 50 nm.

Abstract: Refractory superalloys consist essentially of a primary constituent selected from the group consisting of iridium, rhodium, and a mixture thereof, and one or more additive elements selected from the group consisting of niobium, tantalum, hafnium, zirconium, uranium, vanadium, titanium and aluminum, and the superalloys having a microstructure containing an FCC-type crystalline structure phase and an L1.sub.2 -type crystalline structure phase are precipitated. Preferably the amount of additive element(s) is 2 to 22 atom %.

Abstract: The shape memory effect is displayed by near-equiatomic ruthenium alloys of Ta or Nb with compositions of Ta.sub.x Ru.sub.1-x where x can be as low as 0.38 and preferably x=0.44 to 0.63 and Nb.sub.x Ru.sub.1-x where x can be as low as 0.25 and preferably x=0.45 to 0.59 which exhibit a transition from the high-temperature cubic phase to a tetragonal phase. These alloys are prepared by melting together tantalum and ruthenium, or niobium and ruthenium, in the above mentioned ratios. A further embodiment of this invention is to alloy NiTi alloys with, one of these two ruthenium-based high-temperature alloys (i.e. either Ta--Ru or Nb--Ru) so as to obtain a similar behavior which will result in an increase in the transition temperature relative to unalloyed Ni--Ti.

Abstract: The present invention relates to joining by brazing ceramic elements comprising SiC. The purpose of the invention is to provide a braze alloy which gives a brazed joint resistant to fluorine effluents and having controlled reactivity with SiC. This purpose is achieved using a braze alloy comprising Si and rhodium.

Abstract: A rapid single step assay suitable for the detection or quantification of enzymes, in particular, hydrolases, especially, aminopeptidases and esterases. The enzymatic reaction causes the cleavage of a metal ligand labelled hydrolase substrate. The cleaved ligand alters the electrochemiluminescence of bidentate aromatic heterocyclic nitrogen-containing ligand reagent. The change in electrochemiluminescence correlates to the presence of hydrolase activity present in the sample. The assay can be performed on an IGEN Origen.RTM. Analyzer.

Abstract: A magneto-optical layer sensitive to a light with a short wavelength such as 400 to 550 nm and having a perpendicular magnetization can be deposited on a substrate at a room temperature. The magneto-optical layer is of a tertiary polycrystalline having a composition, for example, Co.sub. aPt.sub.b Ru.sub.c where 20.ltoreq.a.ltoreq.70, 10.ltoreq.b.ltoreq.70, 10.ltoreq.c.ltoreq.60 and a+b+c=100 or Co.sub.d Pt.sub.e Re.sub.f where d.ltoreq.80, 5.ltoreq.e, 5.ltoreq.f, 40.ltoreq.4d-5f and d+e+f=100, and has an easy magnetization axis perpendicular to the main surface of the layer.

Abstract: Amorphous metal alloys rich in noble metals prepared by rapid solidification processing are disclosed. The alloys have at least a ternary composition having the formula M.sub.a G1.sub.b G2.sub.c, wherein M is at least one element selected from the group consisting of Ag, Au, Ru, Os, Rh, Ir, Pd, and Pt, and G1 is at least one element selected from the group consisting of B, C, Cu, Ni, Si, and Be, and G2 is at least one element selected from the group consisting of Y, the lanthanides, Zr, Hf, Ca, Mg, Ti, Nb, and Ta. The subscripts a, b, and c are atomic percentages; a ranges from 70 to 90 percent, and b and c range from 5 to 15 percent each. Preferably, a is at least 80 percent and b and c are generally equal. The amorphous metal alloys are readily glass forming and thermally stable at room temperatures.

Abstract: The present invention provides heat reserving materials comprising alloys of Ru and at least one rare earth metal which are represented by the formula (I):(A.sub.1-x B.sub.x).sub.z Ru.sub.1-y C.sub.ywherein A represents one or two or more of Er, Ho and Dy; B represents one or two or more of the other rare earth metals; C represents one or two or more of Co, Ni, Al, Cu, Pd, Rh, Au, Ag, Cr, Mn, V and B; x is not less than 0 and not more than 0.5; y is not less than 0 and less than 1.0; and z is more than 1.1 and less than 5.0.When the heat reserving materials of the present invention are used in a cryogenic refrigerator, very low temperatures of not higher than 10 K. can be achieved. Specific heat properties of the materials can be varied as desired by adjusting the content ratio of the plural phases each of which has a different magnetic transition temperature.

Abstract: Intermetallic compounds of ruthenium and aluminum are disclosed comprising about 40 to 51 atomic percent aluminum, about 0.8 to 9 atomic percent scandium and boron, and the balance substantially ruthenium. The intermetallic compounds have a high hardness up to about 1150.degree. C., and good room-temperature toughness.

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: Alloy compositions suitable for use in protecting refractory base alloy compositions are disclosed. The coating is formed of an alloy containing chromium, ruthenium and aluminum and which may contain iron, cobalt and nickel. The coating is found to be highly resistant to oxidation.

Abstract: Metallization of integrated devices using ruthenium as a metallization material results in well-adhering contacts to source and drain regions as well as to gate oxide. Ruthenium is similarly suited as a diffusion barrier metallization between, e.g., silicon and aluminum and as an interconnection metallization material. And, as a diffusion barrier material, ruthenium dioxide may be used.

Abstract: A hard alloy including at least one hard phase and a binary or multicomponent binder metal alloy, in which the hard substance comprises a finely dispersed, homogeneous distribution in the binder metal. The hard phase comprises a carbide of a Group IVb, Vb or VIb transition metal, and the binder metal alloy comprises a solid alloy of a Group IVb, Vb or VIb transition metal, with Re, Ru, Rh, Pd, Os, Ir, or Pt.

Abstract: An amorphous alloy is prepared by rapid quenching from the liquid state and consists of(1) 10 to 40 atomic percent of P and/or Si(2) 90 to 60 atomic percent of two or more of Pd, Rh and Pt.The amorphous alloy is used for an electrode for an electrolysis.