Lead-free joining of Niobium based superconductors for MRI/NMR machines
A novel high-current, persistent-grade and lead-free superconducting joint between Nb-based multi-filamentary superconducting wires for MRI/NMR and other high-field applications.
Applications: MRI (Magnetic Resonance Imaging), NMR (Nuclear Magnetic Resonance), Superconducting Magnets, Power Transmission
| Features | Benefits |
|---|---|
| Novel method for joining Nb (Niobium)-based multifilamentary wires, such as Nb-Ti (Niobium Titanium), using doped MgB2 (Magnesium Diboride) as a filler material | Joints enable high current flow for the generation of powerful magnetic fields using multiple superconducting coils |
| MgB2 has excellent superconducting properties, e.g. critical field much higher than current joint filler materials; a much higher critical temperature | Joints have higher magnetic fields can be placed easily inside the magnet cryostat – providing greater flexibility in magnet design |
| Resultant joints can carry hundreds of amperes at resistances well below 10-12Ω, satisfying the requirements for persistent-mode superconducting magnets | Joints with persistent-grade performance at high currents facilitate the ultra-stable fields necessary for MRI and NMR designs |
| No lead-based materials used in the making of the joint | Lead-free joints mitigate removal or possible weakened exemptions by Regulatory Bodies on use of of lead in medical devices |
| The Oxford method of joining is straight forward: no complex steps or exotic substances inhibiting manufacturing scale-up | The manufacturability and repeatability of the jointing research are important outcomes to underpin industrial scale development |
Available For
- Co-development
- Consulting
- Licensing