Review on the state-of-the-art and challenges in the MgB2 component manufacturing for superconducting applications

Carvalho de Castro Sene, Fabiano

doi:10.1016/j.supcon.2023.100083

Cited by 3 publications

(1 citation statement)

References 109 publications

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“…The MgB 2 superconductors with a bulk density of about 2.63 g/cm 3 are the lightest materials among practical superconductors. This makes MgB 2 attractive for portable applications [ 143 , 144 , 145 , 146 , 147 , 148 , 149 , 150 , 151 , 152 , 153 , 154 , 155 , 156 , 157 , 158 , 159 , 160 , 161 , 162 , 163 , 164 , 165 , 166 , 167 , 168 , 169 , 170 , 171 , 172 , 173 , 174 , 175 , 176 , 177 , 178 , 179 ], especially for aviation and space technology [ 26 , 146 , 171 ].…”

Section: Application Of Bulk Mgb 2 Superconductorsmentioning

confidence: 99%

Bulk MgB2 Superconducting Materials: Technology, Properties, and Applications

Prikhna,

Sokolovsky,

Moshchil

2024

Materials

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The intensive development of hydrogen technologies has made very promising applications of one of the cheapest and easily produced bulk MgB2-based superconductors. These materials are capable of operating effectively at liquid hydrogen temperatures (around 20 K) and are used as elements in various devices, such as magnets, magnetic bearings, fault current limiters, electrical motors, and generators. These applications require mechanically and chemically stable materials with high superconducting characteristics. This review considers the results of superconducting and structural property studies of MgB2-based bulk materials prepared under different pressure–temperature conditions using different promising methods: hot pressing (30 MPa), spark plasma sintering (16–96 MPa), and high quasi-hydrostatic pressures (2 GPa). Much attention has been paid to the study of the correlation between the manufacturing pressure–temperature conditions and superconducting characteristics. The influence of the amount and distribution of oxygen impurity and an excess of boron on superconducting characteristics is analyzed. The dependence of superconducting characteristics on the various additions and changes in material structure caused by these additions are discussed. It is shown that different production conditions and additions improve the superconducting MgB2 bulk properties for various ranges of temperature and magnetic fields, and the optimal technology may be selected according to the application requirements. We briefly discuss the possible applications of MgB2 superconductors in devices, such as fault current limiters and electric machines.

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Section: Application Of Bulk Mgb 2 Superconductorsmentioning

confidence: 99%

Bulk MgB2 Superconducting Materials: Technology, Properties, and Applications

Prikhna,

Sokolovsky,

Moshchil

2024

Materials

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Fabrication of MgB₂ Coil with the Center Field of 5.71 Tesla Using 520‐m Inner Magnesium Diffusion Wire

Chen,

Yang,

Wang

et al. 2024

Adv Funct Materials

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The poor deformation ability of magnesium rods makes it challenging to fabricate long MgB2 inner magnesium diffusion (IMD) wires, further seriously limiting the application of high‐performance MgB2 wires. A 600 m IMD 30‐filament MgB2 wire is fabricate by alternating use of rotary‐swaging and drawing strategy. The critical current density (Jc) and the critical engineering current density (Je) are 8.0 × 104 A cm−2 and 7.6 × 105 A cm−2 (at 4.2 K, 4 T), respectively, which are some of the best performances reported so far. The flux‐pinning behavior of the MgB2 wires is investigated, and the surface pinning behavior is found to be dominant in the IMD 30‐filament wire in the whole field range at 4.2 K. The critical point for the IMD 30‐filament MgB2 wire to keep high performance in high fields is revealed by comparing it with the reference wires. Then, 520 m of wire are cut from the 30‐filament MgB2 wire and wound into a coil. The center field of the coil is 5.71 T at 4.2 K when the current loads to 219 A, which is the highest value among the IMD MgB2 coils. This work made breakthroughs in the wire length, filament numbers, and transport performance of IMD MgB2 wire, while also providing a paradigm study for exploring the in situ magnetic performance of multi‐filament wires.

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Review on high-temperature superconducting trapped field magnets

Wang,

Zhang,

Hao

et al. 2024

Supercond. Sci. Technol.

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Superconducting (SC) magnets can generate exceptionally high magnetic fields and can be employed in various applications to enhance system power density. In contrast to conventional coil-based SC magnets, high-temperature superconducting (HTS) trapped field magnets (TFMs), namely HTS trapped field bulks (TFBs) and trapped field stacks (TFSs), can eliminate the need for continuous power supply or current leads during operation and thus can function as super permanent magnets. TFMs can potentially trap very high magnetic fields, with the highest recorded trapped field reaching 17.89 T, achieved by TFSs. TFMs find application across diverse fields, including rotating machinery, magnetic bearings, energy storage flywheels, and magnetic resonance imaging (MRI). However, a systematic review of the advancement of TFMs over the last decade remains lacking, which is urgently needed by industry, especially in response to the global net zero target. This paper provides a comprehensive overview of various aspects of TFMs, including simulation methods, experimental studies, fabrication techniques, magnetisation processes, applications, and demagnetisation issues. Several respects have been elucidated in detail to enhance the understanding of TFMs, encompassing the formation of HTS bulk composites and TFSs, trapped field patterns, enhancement of trapped field strength through pulsed field magnetisation (PFM), as well as their applications such as SC rotating machines, levitation, and Halbach arrays. Challenges such as demagnetisation, mechanical failure, and thermal instability have been illuminated, along with proposed mitigation measures. The different roles of ferromagnetic materials in improving the trapped field during magnetisation and in reducing demagnetisation have also been summarised. It is believed that this review article can provide a useful reference for the theoretical analysis, manufacturing, and applications of TFMs within various domains such as materials science, power engineering, and clean energy conversion.

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Review on the state-of-the-art and challenges in the MgB2 component manufacturing for superconducting applications

Cited by 3 publications

References 109 publications

Bulk MgB2 Superconducting Materials: Technology, Properties, and Applications

Bulk MgB2 Superconducting Materials: Technology, Properties, and Applications

Fabrication of MgB₂ Coil with the Center Field of 5.71 Tesla Using 520‐m Inner Magnesium Diffusion Wire

Review on high-temperature superconducting trapped field magnets

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Review on the state-of-the-art and challenges in the MgB2 component manufacturing for superconducting applications

Cited by 3 publications

References 109 publications

Bulk MgB2 Superconducting Materials: Technology, Properties, and Applications

Bulk MgB2 Superconducting Materials: Technology, Properties, and Applications

Fabrication of MgB2 Coil with the Center Field of 5.71 Tesla Using 520‐m Inner Magnesium Diffusion Wire

Review on high-temperature superconducting trapped field magnets

Contact Info

Product

Resources

About

Fabrication of MgB₂ Coil with the Center Field of 5.71 Tesla Using 520‐m Inner Magnesium Diffusion Wire