A5067897365- Physics of Superconductivity and Magnetism
- Superconducting Materials and Applications
- High-Temperature Coating Behaviors
- ZnO doping and properties
- HVDC Systems and Fault Protection
- Intermetallics and Advanced Alloy Properties
- Superconductivity in MgB2 and Alloys
- Magnetic and transport properties of perovskites and related materials
- Advanced Condensed Matter Physics
- Particle accelerators and beam dynamics
- GaN-based semiconductor devices and materials
- Electronic and Structural Properties of Oxides
- Semiconductor materials and devices
- High Temperature Alloys and Creep
- Electrodeposition and Electroless Coatings
- Corrosion Behavior and Inhibition
- Catalytic Processes in Materials Science
- Nuclear Materials and Properties
- Forest Biomass Utilization and Management
- Metal and Thin Film Mechanics
- Nuclear Physics and Applications
- Magnetic confinement fusion research
- Copper Interconnects and Reliability
- Environmental Impact and Sustainability
- Electrocatalysts for Energy Conversion
MaxPower (United States)
2024
Ministry of Industry and Information Technology
2020-2023
Harbin Institute of Technology
2020-2023
North China Electric Power University
2023
Ministry of Natural Resources
2023
Southwest Jiaotong University
2022-2023
Beihang University
2023
Tennessee Technological University
2006-2020
Université Bourgogne Franche-Comté
2019
Université de Bourgogne
2019
The mechanical behavior of a REBCO-coated conductor wire under uniaxial tension is largely determined by the two thickest component layers in architecture, namely, substrate and stabilizer. A rather complicated stress-strain relationship often observed when composite tension, which result differences elastic modulus yield stress between Hastelloy electroplated Cu In this paper, relationships free standing stabilizer bare REBCO wire, i.e., tape without any stabilizer, were measured. results...
REBCO (RE = rare earth) based high temperature superconducting (HTS) wires are now being utilized for the development of electric and electromagnetic devices various industrial, scientific medical applications. In last several years, increasing efforts in using so-called second generation (2G) HTS some applications require a further increase their engineering current density (Je). The those typically related to magnetic fields where higher Je wire, addition its irreversibility mechanical...
A charge control model and a mobility are developed for the Al–GaN/GaN high electron transistor (HEMT) device. The addresses issues of how piezoelectric effect interface roughness influence device properties. We find that even small amount has very strong on two-dimensional gas Low-lying electronic states strongly localized transport through these is not described by Born approximation but phonon-assisted hopping. At low temperature effects localization quite important we use Kubo formula to...
We have formed BaZrO3 nanocolumns and (Gd,Y)2O3 nanoprecipitates in reel-to-reel metal organic chemical vapor deposition (MOCVD) processed (Gd,Y)Ba2Cu3O7−x coated conductors increased the critical currents (Ic) of applied magnetic fields to remarkable levels. A tape 1 m length with 6.5% Zr-additions 30% composition rich both Gd Y showed Ic values 813 A/cm width at (self-field, 77 K) above 186 (1 T, K). The strongly enhanced flux pinning over a wide range field orientations can be attributed...
The second-generation high-temperature superconductor (2G HTS), Re-Ba-Cu-O coated conductors are known for strong mechanical properties and have numerous potential applications in high magnetic field research electrical power systems. It has been noted the community that can be prone to performance degradation on thermal cycling when used epoxy impregnated magnet windings. This tied <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">c</i> -axis peel...
A new critical-current-by-design paradigm is presented. It aims at predicting the optimal defect landscape in superconductors for targeted applications by elucidating vortex dynamics responsible bulk critical current. To this end, current measurements on commercial high-temperature are combined with large-scale time-dependent Ginzburg-Landau simulations of dynamics.
Thermal barrier coatings (TBCs) and air film-cooling technology have been extensively utilized in nickel-based, single-crystal turbine blades to enhance their heat resistance. However, structural complexity material property mismatches between layers can affect residual stresses potentially lead coating failure. In this study, a three-dimensional finite element model with atmospheric plasma-spraying thermal (APS-TBCs) deposited on air-cooled, was established investigate stress character...
Hydrogels containing various mounts of tetraalkylammonium salts were used to modify microcantilevers for measurements the concentration CrO4(2-) in aqueous solutions. These undergo bending deflection upon exposure solutions concentrations as a result swelling or shrinking hydrogels. The microcantilever function ions is nearly linear most ranges. It was found that 10(-11) M can be detected using this technology fluid cell. Other ions, such Br-, HPO4(2-), and NO3-, have minimal effect on...
Rare earth (RE) based second generation (2G) high temperature superconducting (HTS) wire is an emerging material that has been commercially available to a wide range of energy, scientific, industrial and medical applications including high-field magnets, fault current limiters, motors generators, transformers, power cables. High engineering critical density, mechanical strength, irreversibility field are the major advantages 2G HTS wires over low (LTS) bismuth-based first (1G) wires. with I...
In this article we report on two dimensional sheet charge and mobility in GaN/AlGaN heterostructure field effect transistors. Both experimental theoretical results are presented. Experimental reported samples grown by metal organic chemical vapor deposition (MOCVD) molecular beam epitaxy (MBE). Theoretical studies done to examine how spontaneous polarization piezoelectric control the density. The also focus interface roughness, aluminum mole fraction barrier phonon scattering influence...
The influence of Zr doping in (Gd, Y)–Ba–Cu–O ((Gd, Y)BCO) tapes made by metal–organic chemical vapor deposition has been studied with a specific objective uniform and reproducible enhancement in-field critical current (Ic) over long lengths. 50 m 7.5 10 at.% 1 µm thick Y)BCO films have found to exhibit sharply enhanced peak Ic the orientation field parallel c-axis retain 28% their self-field value at 77 K T. BaZrO3 (BZO) nanocolumn density cross-sectional microstructure was increase...
In recent years, remarkable technical advances have been achieved in the development of Rare-earth-Ba-Cu-O (REBCO) based coated conductors for large-scale applications. For coil-based applications (e.g., motors, generators, magnets), addition to high critical current density under applied field, conductor also needs maintain mechanical integrity when exposed transverse tensile stresses typically found impregnated coils. this study, we present a detailed analysis microstructure REBCO...
Systematic effects of Zr additions on the structural and flux pinning properties YBa2Cu3O7−δ (YBCO) films deposited by metal–organic chemical vapor deposition (MOCVD) have been investigated. Detailed characterization, conducted coordinated transport, x-ray diffraction, scanning transmission electron microscopy analyses, imaging Raman revealed trends in resulting property/performance correlations these with respect to varying mole percentages (mol%) added Zr. For compositions ≤7.5 mol%, lead...
AbstractChemical vapor deposited (CVD) Fe-Al coatings are being investigated to address fundamental issues concerning aluminide coating performance and lifetime. By using a well-controlled laboratory CVD procedure, the uniform in composition, purity microstructure. A typical ferritic steel, Fe-9Cr-1Mo, an austenitic stainless 304L (nominally Fe-18Cr-9Ni), were coated examine differences two types of substrates. For both substrates, as-deposited consisted thin (<5 μm), Al-rich layer above...