Award Data

Particle size distribution is one of the critical parameters in fabricating high-performance, fine-filament superconductors of Nb3Sn and Bi-2212 using the powder-in-tube (PIT) technique. Even a few large particles in the tubes of a multi-filament PIT billet will limit the size of the drawing or rolling to finish dimension. Since performance scales with the number of filaments in a strand, improv ...

Precursor materials for superconductors such as Nb3Sn and Nb3Al include low melting point components. Therefore, conventional extrusion processes with large area reductions are not possible because adiabatic heating raises the temperature above the melting point. In certain circumstances, hydrostatic extrusion could be used, as it can be operated at low enough speeds to allow the deformation hea ...

60275 Preliminary designs for the next generation of high energy physics colliders will require much higher magnetic field levels for successful operation. Currently available superconducting materials are either unable to reach these levels (NbTi) or they are much too expensive (Nb3Sn, Nb3Al and HiTcSC). This project addresses the design and manufacture of Nb3Sn superconducting wire that h ...

60275 Preliminary designs for the next generation of high energy physics colliders will require much higher magnetic field levels for successful operation. Currently available superconducting materials are either unable to reach these levels (NbTi) or they are much too expensive (Nb3Sn, Nb3Al and HiTcSC). This project addresses the design and manufacture of Nb3Sn superconducting wire that h ...

65417 More efficient fusion energy systems will require low-activation-based advanced structural materials for the first wall reactor in order to sustain high radioactive doses and stresses at elevated temperatures. SiC-based fiber reinforced composites are attractive, but these composites can only be produced in limited sizes and shapes. Therefore, a suitable joining technology must be develo ...

65418 Increasing the operational temperatures of coal combustion plants will increase efficiency. The use of higher temperatures will in turn require the replacement of currently-used common alloy steels used as structural components. These components need to withstand temperatures above 700¿C and resist corrosion from flowing coal ash. Ferritic steels are corrosion resistant but lack high t ...

60633 Fuel cells are widely viewed as the most desirable future power generation method, because of their unique combination of high efficiency, low emissions, size flexibility, and quiet operation. Despite these unique features, the high cost of fuel cells compared with competing technologies has prevented commercial introduction. One of the key factors that increases fuel cell power plant ...

60633 Fuel cells are widely viewed as the most desirable future power generation method, because of their unique combination of high efficiency, low emissions, size flexibility, and quiet operation. Despite these unique features, the high cost of fuel cells compared with competing technologies has prevented commercial introduction. One of the key factors that increases fuel cell power plant ...

65646 This project will use FISH (fluorescence in situ hybridization) technology to define the centromere region of the Brassica genome. Confirmed centromere clones will be used to construct Brassica mini-chromosomes that will remain distinct from the host genome and allow the delivery of very large DNA segments, including those that encode all of the genes in a complex pathway. In Phase I, ...

65114 The development of mini-chromosomes can significantly enhance the range of manipulations possible for important crops. These mini-chromosomes will remain distinct from the host genome and make it feasible to deliver very large DNA segments, including those that encode all of the genes in a complex pathway. This project will construct mini-chromosomes based on the fractionation of centrom ...