A5020374948- Physics of Superconductivity and Magnetism
- Superconductivity in MgB2 and Alloys
- Superconducting Materials and Applications
- Particle accelerators and beam dynamics
- Iron-based superconductors research
- Metal and Thin Film Mechanics
- Magnesium Alloys: Properties and Applications
- Silicon Carbide Semiconductor Technologies
- Intermetallics and Advanced Alloy Properties
- Magnetic and transport properties of perovskites and related materials
- Titanium Alloys Microstructure and Properties
- ZnO doping and properties
- Spacecraft and Cryogenic Technologies
- Magnetic Bearings and Levitation Dynamics
- Inorganic Fluorides and Related Compounds
- HVDC Systems and Fault Protection
- Frequency Control in Power Systems
- Shape Memory Alloy Transformations
- Precipitation Measurement and Analysis
- Millimeter-Wave Propagation and Modeling
- Characterization and Applications of Magnetic Nanoparticles
- Advancements in Solid Oxide Fuel Cells
- Antenna Design and Optimization
- Protein Degradation and Inhibitors
- Radio Wave Propagation Studies
Beijing Institute of Technology
2024-2025
Fujian Normal University
2019-2024
Centre of Excellence for Advanced Materials
2020
Western Metal Materials (China)
2012-2019
Supercon (United States)
2015
Superconductor Technologies (United States)
2014
State Key Laboratory of Structural Analysis for Industrial Equipment
2014
Dalian University of Technology
2014
Northwest Institute For Non-Ferrous Metal Research
2014
Southwest Jiaotong University
2007-2013
Considering the challenge of precise altimetry for high-altitude airburst fuzes, this paper proposes a two-dimensional joint extension characteristic method based on an improved constant false alarm rate (CFAR) detection and accurate feature region extraction approach. First, CFAR with secondary protection windows is introduced to effectively mitigate masking effect caused by conventional algorithms. The fuze-to-ground distance-based height measurement achieved leveraging geometric...
We develop a new type of violet-light-excitable Eu 2+ :Sr 8 CaLu(PO 4 ) 7 phosphor with tunable green–yellow emissions and high photoluminescence quantum yields above 70% via Na + alloying-induced local structural modification.
Abstract Bulk samples of MgB 2 doped with 0, 1, 3, and 5 wt% Pr 6 O 11 nanopowder were prepared using a solid‐state reaction route. The lattice constants ‐doped systematically increase increasing doping level, indicating partial substitution for Mg in the crystal structure, consequently, superconducting transition temperature, T c , is slightly suppressed. At low level 1 critical current density, J irreversibility field, H irr are improved. However, at higher levels, seems harmful...
Adoption of powder-in-tube method to fabricate superconducting wire can realize a large application Nb3Al prepared by powder metallurgy. Powder metallurgy was used synthesize under various heat-treatment conditions, annealing temperature varied from 700 1,000 °C and heating time 10 50 h. X-ray diffraction patterns reveal that reaction between Nb Al took place formed NbAl3 phase. Under current conditions (annealing h), so stable it did not further react with the unreacted sensitive condition....
Mechanically alloyed Nb3(Al1−xGex) compounds with nominal composition x = 0%, 10%, 15%, 20%, 25% and 30% were synthesized using high-energy ball milling. The effects of Ge content sintering temperature on the formation Nb3Al superconducting phase at a relatively low without extremely high-temperature rapid heating, quenching transformation process studied. results revealed that doping in improved A15 temperatures, enhanced transition (Tc), refined grain structure, thus improving overall...
The quench properties for REBCO conductor in SN <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> and conduction cooled system are studied. normal zone propagation velocity determined by voltage, temperature, strain methods is compared to demonstrate the feasibility of method detect conductor.
The influences of vertical vibration on suspension stability and side-suspending gap for the high-temperature superconducting (HTS) maglev system are investigated. results show that attenuations height augment with increases amplitude initial gap, respectively. These phenomena observed can be attributed to fact process causes ac loss effects. will helpful future applications HTS system.
The A15 phase superconductor Nb3Al has been considered as an alternative to Nb3Sn for high field and large scale applications. However, prepare a stoichiometric with fine grain structures is very difficult. High-energy ball milling solid state powder processing technique useful preparing Nb-Al alloys (Nb3Al). effects of time annealing temperature on the formation superconducting have studied. Pure Nb Al powders ratio were mixed milled, charging performed in inert atmosphere. Phase structural...
In this paper, we have reported the manufacture of a novel simple-structured jelly-roll Nb3Al precursor long wire, and its electromagnetic properties microstructure with different rapid heating quenching (RHQ) heat-treatments. By comparing three processing methods, it is found that rolling drawing (RD) method more suitable to fabrication kilometer-length wire without annealing. Using homemade RHQ equipment, successfully carried out heat-treatment samples various conditions. Based on...
Abstract Although both the mass density and grain connectivity of MgB 2 superconducting layers can be greatly improved via an internal Mg diffusion (IMD) process, poor structural uniformity low filling factor IMD wires limit further enhancement their performance. Herein, we prepared 19-filament 37-filament IMD-MgB using a combination optimization component structure introduction intermediate annealing process. Microstructure analysis suggests that good high layer have been achieved in...
In this paper, we reported the recent progress in developing practical kilometer-length rod-in-tube (RIT) multifilamentary Nb <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> Al superconducting wires at WST, which included preparation of Cu/Nb-Al precursor wires, design and manufacture rapid heating quenching (RHQ) equipment, RHQ heat-treatment process wires. Superconducting properties microstructure RIT have been discussed. By measuring...