A5100813872- Physics of Superconductivity and Magnetism
- Superconducting Materials and Applications
- Superconductivity in MgB2 and Alloys
- Particle accelerators and beam dynamics
- Magnetic and transport properties of perovskites and related materials
- Magnetic properties of thin films
- Magnetic Properties and Applications
- Iron-based superconductors research
- Simulation and Modeling Applications
- Fusion materials and technologies
- Boron and Carbon Nanomaterials Research
- High-pressure geophysics and materials
- Theoretical and Computational Physics
- Geophysics and Gravity Measurements
- Advanced Condensed Matter Physics
- Geomechanics and Mining Engineering
- Advanced Computational Techniques and Applications
- Advancements in Solid Oxide Fuel Cells
- Medical Imaging Techniques and Applications
- Frequency Control in Power Systems
- Remote Sensing and Land Use
- Metal and Thin Film Mechanics
- Fuel Cells and Related Materials
- HVDC Systems and Fault Protection
- GNSS positioning and interference
University of South China
2025
Changsha Central Hospital
2025
Western Metal Materials (China)
2012-2024
China University of Mining and Technology
2024
Chongqing University
2024
Northwestern Polytechnical University
2023
Northwest Institute For Non-Ferrous Metal Research
1996-2021
Supercon (United States)
2013-2015
China University of Geosciences
2007
China Center of Advanced Science and Technology
1996-1999
Due to the low cost, high critical current density ( <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">J</i> <sub xmlns:xlink="http://www.w3.org/1999/xlink">c</sub> ), anisotropy and a temperature of about 40 K, MgB xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> tapes/wires is promising operate in High-temperature Superconducting Magnetic Energy Storage (SMES). Based on development world's first 10 MJ/5 MW class SMES prototype China...
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...
Abstract We prepared Nb 3 Al superconducting wires doped with nano-size SnO 2 (n-SiO ) particles through a multi-time rapid heating and quenching process investigated their microstructure properties. All the samples showed highly homogeneous A15 phase. Compared pure Al, n-SnO presented larger Δ T c value higher J value. The best at 4.2 K was found in 1 wt% sample, 3.37 × 10 5 A cm −2 , 2.55 1.80 8 T, 12 respectively. These results were an improvement of about 60% compared same applied...
NbTi superconducting Wire has the advantage of excellent processing characteristics, stable properties and low cost. It been widely used for magnetic fields <9 T. To increase stability reduce cost magnets, it is necessary to improve Critical Current Density at high (≥9 T) wire. Therefore, this research focuses on procedure obtain samples with higher Jc (4.2 K, 9 738 A/mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> . In addition, in...
NbTi strands are widely used in magnetic resonance imaging (MRI) and other superconducting magnets for their good processing characteristics, low cost, performance. With the huge demand high yield strength monolith wire MRI using less liquid helium, improving of becomes a problem that urgently needs to be solved. In this study, we adopted new fabrication process by "enameling insulation before rolling forming" improve wire. By choosing suitable material adjusting working rate, property has...
The heat treatment process plays a central role in optimizing the critical current density of Nb <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$_{\text{3}}$</tex-math></inline-formula> Sn wire. Increasing wire, reducing use amount wire magnets and price are important ways to promote industrialization mass application microstructure state an even distribution Ti factors for enhancing grain size increases...
Regarding the terrestrial water storage anomaly (TWSA) gap between Gravity Recovery and Climate Experiment (GRACE) GRACE Follow-on (-FO) gravity satellite missions, a BEAST (Bayesian estimator of abrupt change, seasonal change trend)+GMDH (group method data handling) gap-filling scheme driven by hydrological meteorological is proposed. Considering these driving usually cannot fully capture trend changes TWSA time series, we propose first to use algorithm perform piecewise linear detrending...
The temperature dependences of the Raman spectrum and lattice parameters polycrystalline MgB2 have been investigated by means spectroscopy x-ray diffraction. It is found that show an approximately linear change with decrease, giving different thermal expansions along a- c-axes, which caused comparatively weak metal–boron bonding in MgB2. grain size determined diffraction around 45 nm for both [100] [001] directions. There no evidence any structural transition while changes from 300 K down to...
We report the fabrication process and critical current-carrying properties of a 20-m-length (6+1)-structure MgB <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> superconducting cable with Nb-Ti central reinforcement wire. The results suggest that twisting hardly degrades current wire, when cables are prepared by twist react process. Comparing common single-filament wire (CW) Ic 118.4 A at 4.2 K 4 T, extracted from (EW) has almost no...
In this paper, we compare the superconducting properties of Nb3Al wires prepared by two different techniques. The first is in situ powder-in-tube method: first, powder Nb-Al saturated solid solution, Nb(Al)ss, mechanical alloying filled into a metal niobium tube, and then subjected to cold working such as swaging drawing form wire. Heat treatment at 800-1000 °C converts Nb(Al)ss phase phase. Another method use jelly-roll technology make precursor wire, rapid heating quenching (RHQ) process...
The authors have prepared (YHo)Ba2Cu3O7-y superconductors with high Jc by the powder melting process (PMP) method. DTA result shows that temperature of Y-system superconductor can be reduced Ho addition. value improved and size 211 phase substitution. Microstructures X-ray diffraction pattern indicate 123 grains are preferentially aligned mutually parallel a-b conductive planes. There many twins fine particles in sample. Many crystal defects also found to exist around phase. These may acting...