Abstract: A coated article, a coating for protecting an article, and a method for protecting an article are provided. The article comprises a metallic substrate and a substantially single-phase coating disposed on the substrate, wherein the coating comprises nickel (Ni) and at least about 30 atomic percent aluminum (Al); the coating further comprises a gradient in Al composition, the gradient extending from a first Al concentration level at an outer surface of the coating to a second Al concentration level at an interface between the substantially single-phase coating and the substrate, wherein the first Al concentration level is greater than the second Al concentration level and the second concentration level is at least about 30 atomic percent Al.

Abstract: A coating system for an article comprising a substrate formed of a metal alloy that is prone to the formation of a deleterious secondary reaction zone (SRZ) as a result of containing more than three weight percent rhenium and at least one additional refractory metal. The coating system comprises an aluminum-containing overlay coating and a diffusion barrier coating between the overlay coating and the substrate. The diffusion barrier coating consists of, in atomic percent, about 20% to about 90% ruthenium, about 2% to about 60% chromium, optionally up to about 50% aluminum, optionally up to about 20% of a platinum-group metal, and the balance at least one of nickel, cobalt, and iron and incidental impurities. The diffusion barrier coating sufficiently inhibits diffusion of aluminum from the overlay coating into the substrate, such that the substrate remains essentially free of SRZ.

Abstract: A niobium-silicide refractory metal intermetallic composite adapted for use in a turbine component. The niobium-silicide refractory metal intermetallic composite comprises: between about 19 atomic percent and about 24 atomic percent titanium; between about 1 atomic percent and about 5 atomic percent hafnium; between about 16 atomic percent and about 22 atomic percent silicon; between about 7 atomic percent and about 14 atomic percent chromium; from about 1.5 atomic percent to about 3 atomic percent tin; and a balance of niobium. The niobium silicide refractory intermetallic composite contains a tetragonal phase, which comprises a volume fraction from 0.35 to 0.5 of the niobium silicide refractory intermetallic composite, and a hexagonal M3Si5 silicide phase (wherein M is at least one of Nb and Hf) which comprises a volume fraction comprises less than 0.25 of the niobium silicide refractory intermetallic composite.

Abstract: An alloy, an article comprising the alloy, and methods for manufacturing and repairing an article that employ the alloy are presented. The alloy comprises, in atom percent, at least about 50% rhodium, up to about 49% of a first material, from about 1% to about 15% of a second material, and up to about 10% of a third material. The first material comprises at least one of palladium, platinum, iridium, and combinations thereof. The second material comprises at least one of tungsten, rhenium, and combinations thereof. The third material comprises at least one of ruthenium, chromium, and combinations thereof. The alloy comprises an A1-structured phase at temperatures greater than about 1000° C., in an amount of at least about 90% by volume.

Abstract: A measurement device for measuring and displaying a physical quantity such as a heartbeat, an atmospheric pressure or temperature, or the like, includes a clock for counting time, a physical quantity measuring device for measuring the physical quantity to be displayed, a processor for determining a plurality of values based on the measured physical quantity and the counted time, a first display for simultaneously displaying the plurality of values and a second display for magnifying at least one of the values and displaying the magnified value.

Abstract: A turbine component comprises a substrate; and a crystalline coating disposed on a surface of the substrate, wherein the crystalline coating comprises tin and yttrium in an amount greater than or equal to about 0.05 atomic percent based upon the total coating. A method of making a turbine component comprises disposing a coating composition on a substrate, wherein the coating composition comprises tin and yttrium in an amount greater than or equal to about 0.1 atomic percent based upon the total coating composition. A crystalline coating comprises tin and yttrium in an amount greater than or equal to about 0.05 atomic percent based upon the total coating.

Abstract: Disclosed herein is a method for making a combinatorial library comprising disposing on a substrate comprising silicon, silicon nitride, silicon carbide or silicon boride at least one reactant, wherein the reactants are lithium, magnesium, sodium, potassium, calcium, aluminum or a combination comprising at least one of the foregoing reactants; heat treating the substrate to create a diffusion multiple having at least two phases; contacting the diffusion multiple with hydrogen; detecting any absorption of hydrogen; and/or detecting any desorption of hydrogen.

Abstract: The present invention provides a method for forming a refractory metal-intermetallic composite. The method includes providing a first powder comprising a refractory metal suitable for forming a metal phase; providing a second powder comprising a silicide precursor suitable for forming an intermetallic phase; blending the first powder and the second powder to form a powder blend; consolidating and mechanically deforming the powder blend at a first temperature; and reacting the powder blend at a second temperature to form the metal phase and the intermetallic phase of the refractory metal-intermetallic composite, wherein the second temperature is higher than the first temperature.

Abstract: Disclosed herein is a method for making and screening a combinatorial library comprising disposing in a substrate comprising graphite or boron carbide at least one reactant, wherein the reactants are lithium, magnesium, sodium, potassium, calcium, aluminum or a combination comprising at least one of the foregoing reactants; heat treating the substrate to create a diffusion multiple; contacting the diffusion multiple with hydrogen having at least two phases; detecting any absorption of hydrogen; and/or detecting any desorption of hydrogen.

Abstract: Disclosed herein is a method for making and screening a combinatorial library, comprising disposing on a substrate comprising aluminum at least one reactant comprising lithium, germanium, magnesium, or a combination comprising at least one of the foregoing; heat treating the substrate to create a diffusion multiple having at least one phase; contacting the diffusion multiple with hydrogen; detecting any absorption of hydrogen; and/or detecting any desorption of hydrogen.

Abstract: Disclosed herein too is a method for manufacturing an article comprising casting an alloy comprising about 1.5 to about 4.5 weight percent aluminum; about 1.5 to about 4.5 weight percent titanium; up to about 3 weight percent niobium; about 14 to about 28 weight percent chromium; about 10 to 23 weight percent cobalt; about 1 to about 3 weight percent of tungsten, rhenium, ruthenium, molybdenum, or a combination thereof; about 0.02 to about 0.15 weight percent of carbon; about 0.001 to about 0.025 weight percent of boron; up to 0.2 weight percent of zirconium, hafnium, or a combination thereof; into a mold.

Abstract: Disclosed herein is a method for making and screening a combinatorial library comprising disposing in a substrate comprising boron, boron nitride, or boron carbide at least one reactant, wherein the reactants are lithium, magnesium, sodium, potassium, calcium, aluminum or a combination comprising at least one of the foregoing reactants; heat treating the substrate to create a diffusion multiple having at least two phases; contacting the diffusion multiple with hydrogen; detecting any absorption of hydrogen; and/or detecting any desorption of hydrogen.

Abstract: A turbine engine component comprising a substrate made of a nickel-base or cobalt-base superalloy and a protective coating overlying the substrate, the coating formed by electroplating at least two platinum group metals selected from the group consisting of platinum, palladium, rhodium, ruthenium and iridium. The protective coating is typically heat treated to increase homogeneity of the coating and adherence with the substrate. The component typically further comprises a ceramic thermal barrier coating overlying the protective coating. Also disclosed are methods for forming the protective coating on the turbine engine component by electroplating the platinum group metals.

Abstract: Articles for use in a high-temperature, oxidative environment, methods for manufacturing such articles, and a material system for protecting articles in such an environment are provided where, for example, one article comprises a substrate and a protective layer disposed over the substrate, the protective layer comprising at least about 60 atomic percent of a metal selected from the group consisting of platinum (Pt), palladium (Pd), rhodium (Rh), osmium (Os), iridium (Ir), and mixtures thereof.

Abstract: An alloy for use in high temperature applications is presented. The alloy comprises, in atom percent, at least about 50% rhodium (Rh); at least about 5% of a metal selected from the group consisting of platinum (Pt), palladium (Pd), and combinations thereof; from about 5% to about 24% ruthenium (Ru); and from about 1% to about 40% chromium (Cr); wherein the alloy comprises less than about 50% by volume of an A3-structured phase, and wherein the quantity defined by the expression ([Cr]+2[Ru]) is in the range from about 25% to about 50%, where [Ru] and [Cr] are the atom percentages of ruthenium and chromium in the alloy, respectively. Articles comprising the alloy and methods employing the alloy for repairing articles are also presented.

Abstract: A combinatorial process for production of material libraries from a single sample, comprising forming a diffusion multiple in the single sample, wherein the diffusion multiple comprises a plurality of interdiffusion regions at interfacial locations of dissimilar metals, metal oxides, or alloys, and wherein the diffusion multiple comprises at least three layers of the metals, non-metals, metal oxides, or alloys; and evaluating properties of the diffusion multiple as a function of composition at about the interdiffusion regions.

Abstract: A method for protecting an article from a high temperature, oxidative environment is presented, along with alloy compositions and ion plasma deposition targets suitable for use in the method. The method comprises providing a substrate, providing an ion plasma deposition target, and depositing a protective coating onto the substrate using the target in an ion plasma deposition process. The target comprises from about 2 atom percent to about 25 atom percent chromium, and the balance comprises aluminum.

Abstract: A coated article, a coating for protecting an article, and a method for protecting an article are provided. The article comprises a metallic substrate and a substantially single-phase coating disposed on the substrate, wherein the coating comprises nickel (Ni) and at least about 30 atomic percent aluminum (Al); the coating further comprises a gradient in Al composition, the gradient extending from a first Al concentration level at an outer surface of the coating to a second Al concentration level at an interface between the substantially single-phase coating and the substrate, wherein the first Al concentration level is greater than the second Al concentration level and the second concentration level is at least about 30 atomic percent Al.

Abstract: A turbine component comprises a substrate; and a crystalline coating disposed on a surface of the substrate, wherein the crystalline coating comprises tin and yttrium in an amount greater than or equal to about 0.05 atomic percent based upon the total coating. A method of making a turbine component comprises disposing a coating composition on a substrate, wherein the coating composition comprises tin and yttrium in an amount greater than or equal to about 0.1 atomic percent based upon the total coating composition. A crystalline coating comprises tin and yttrium in an amount greater than or equal to about 0.05 atomic percent based upon the total coating.

Abstract: A coating system for an article comprising a substrate formed of a metal alloy that is prone to the formation of a deleterious secondary reaction zone (SRZ) as a result of containing more than three weight percent rhenium and at least one additional refractory metal. The coating system comprises an aluminum-containing overlay coating and a diffusion barrier coating between the overlay coating and the substrate. The diffusion barrier coating consists of, in atomic percent, about 20% to about 90% ruthenium, about 2% to about 60% chromium, optionally up to about 50% aluminum, optionally up to about 20% of a platinum-group metal, and the balance at least one of nickel, cobalt, and iron and incidental impurities. The diffusion barrier coating sufficiently inhibits diffusion of aluminum from the overlay coating into the substrate, such that the substrate remains essentially free of SRZ.