Abstract:
A method for making an article comprising a multilayered structure comprising a series of magnetic layers is provided. The method includes providing a substrate and depositing a series of magnetic layers on the substrate and disposing insulating layers between successive magnetic layers. Each magnetic layer has a thickness of at least about 2 micrometers and magnetic material has an average grain size less than 200 nm.
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:
An amorphous magnetic alloy is presented. The alloy has the general formula: (Fe1-xCox)nMoaPbBcCdSie, wherein n is the atomic percent of iron and cobalt; x is the fraction of n; a, b, c, d and e are the atomic percent of molybdenum, phosphorous, boron, carbon and silicon respectively and n, x, a, b, c, d and e are defined by following relationship: 76≦n≦85; 0.05
Abstract:
The present invention provides methods for manufacturing an article having a wetting-resistant surface. The method includes providing a mixture comprising a plurality of micron-sized first particles and a plurality of nano-sized second particles, and a binder; depositing the mixture onto a substrate to form a wetting-resistant surface via a thermal spray process. The mixture is deposited without substantial melting of the first and second particles. The wetting-resistant surface has wettability sufficient to generate, with a reference fluid, a static contact angle of greater than about 90 degrees.
Abstract:
A method of coating a substrate with cryo-milled, nano-grained particles includes forming a face-centered-cubic gamma matrix comprising nickel, cobalt, chromium, tungsten and molybdenum, adding a dispersion strengthening material to the gamma matrix to form a first mixture, cryo-milling the first mixture to form a second mixture to form a nano-grained structure, and cold spraying the second mixture onto a substrate to form a coating having a nano-grained structure.
Abstract:
A nanocomposite comprising a plurality of nanoparticles dispersed in a molybdenum-based matrix, and an x-ray tube component formed from such a nanocomposite. The nanocomposite contains volume fraction of nanoparticle dispersoids in a range from about 2 volume percent to about 20 volume percent. A method of making such molybdenum-based nanocomposites is also disclosed.
Abstract:
A refractory composition is described, containing niobium, silicon, titanium, and at least one of rhenium and ruthenium. The amount of silicon in the composition is at least about 9 atom %, and the amount of titanium present is less than about 26 atom %, based on total atomic percent. Turbine engine components formed from such a composition are also disclosed.
Abstract:
The present invention provides methods for manufacturing an article having a wetting-resistant surface. The method includes providing a mixture comprising a plurality of micron-sized first particles and a plurality of nano-sized second particles, and a binder; depositing the mixture onto a substrate to form a wetting-resistant surface via a thermal spray process. The mixture is deposited without substantial melting of the first and second particles. The wetting-resistant surface has wettability sufficient to generate, with a reference fluid, a static contact angle of greater than about 90 degrees.
Abstract:
An apparatus for friction stir welding, a weld tool for friction stir welding, and a method for making a weld tool for friction stir welding are presented. The weld tool comprises doped tungsten. A method for manufacturing an article, where the method comprises providing the apparatus for friction stir welding, and the article produced by this method are also presented.
Abstract:
A nanocomposite comprising a plurality of nanoparticles dispersed in a molybdenum-based matrix, and an x-ray tube component formed from such a nanocomposite. The nanocomposite contains volume fraction of nanoparticle dispersoids in a range from about 2 volume percent to about 20 volume percent. A method of making such molybdenum-based nanocomposites is also disclosed.