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Superconducting material
Superconducting materials: refer to materials with zero DC resistance and complete diamagnetism under certain conditions; certain conditions refer to appropriate temperature, magnetic field strength and current density.
characteristic:
1) Zero resistance: Superconductivity is characterized by zero resistance. To be precise, when the material is in the superconducting state, its DC resistance is zero, and it can transmit electrical energy without loss.
2) Completely diamagnetic (Meissner effect): Superconductors are not “ideal conductors” in the classic sense. Even if the external magnetic field is small, when the superconductor is cooled below the superconducting transition temperature, the magnetic field lines of the external magnetic field will be repelled from the superconductor, and the magnetic field lines cannot enter the superconductor, and the magnetic flux in the superconductor is zero.
The chemical composition of NbTi
| Grade | chemical composition | |||||||
| Al | Impurities≤ | |||||||
| ≥ | >Fe | Si | Cu | Ga | Mg | Other | Total | |
| Al99.85 | 99.85 | 0.12 | 0.08 | 0.005 | 0.03 | 0.03 | 0.015 | 0.15 |
| Al99.80 | 99.8 | 0.15 | 0.1 | 0.01 | 0.03 | 0.03 | 0.02 | 0.02 |
Niobium Titanium (NbTi) Superconducting Material
Nb-Ti alloy is a low-temperature superconducting material of plastic solid solution alloy. It has excellent plasticity, mechanical strength and high current carrying capacity under a magnetic field.
Niobium-titanium superconducting materials can be made into various composite practical materials through conventional deformation processing and heat treatment processes. When it is used in a low and medium magnetic field of 2~8T, its raw material and manufacturing costs are much lower than other superconductors and other manufacturing technologies.
The niobium-titanium superconductor has already completed the heat treatment process to generate the magnetic flux pinning center before the stranded cable, wound magnet or other magnet application assembly steps, rather than such heat treatment as some superconductors need to be after the final application assembly step This greatly facilitates the practical application of the project.
The mechanical tensile strength of the niobium-titanium superconducting material can be compared with ordinary ones, and it can match its supporting structure material well in the stress-strain design.
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Application of NbTi Superconducting Materials
Niobium-titanium superconducting materials are mainly used in: medical diagnosis of magnetic resonance imaging (MRI), nuclear magnetic resonance spectrometer (NMR), laboratory magnets, high-energy physics particle accelerators, power regulators, mine sweepers, magnetic separation beneficiaries, magnetic levitation trains and Superconducting magnet energy storage (SMES), etc.
