Magnetic Materials TRIZ Cases
- Ce-Containing NdFeB Magnet Shell Structure for High Coercivity
Staged diffusion controls heavy rare earth distribution in Ce-containing NdFeB magnets to raise coercivity while limiting remanence loss.
- Ti-Containing NdFeB Magnet With TiB2 Grain-Boundary Coercivity Control
Nanoscale TiB2 crystals concentrated in thin grain boundaries raise NdFeB coercivity and thermal stability while reducing heavy rare-earth use.
- Contactor Iron Core Cathodic Protection Without Air Gap Increase
A sacrificial metal rod protects laminated contactor cores from salt-fog corrosion while preserving retention force by avoiding coating-induced air gaps.
- Laser-Marked Amorphous Metal Ribbon for Lower Iron Loss
Precisely spaced laser marks refine magnetic domains in amorphous metal ribbon, cutting iron loss and excitation power without weakening the ribbon.
- NdFeB Magnet Grain Boundary Diffusion for Higher Coercive Force
Electrochemical deposition of heavy rare earth salts enables grain boundary diffusion in NdFeB magnets, raising coercive force with lower rare earth use.
- Soft Magnetic Core Compaction and Rapid Heating for Nanocrystallization
Simultaneous strip compaction and rapid current or induction heating forms nanocrystalline soft magnetic cores with higher fill factor and lower coercivity.
- Sm-Fe-N Magnet Processing for Low-Oxygen Fine-Grain Magnetization
Degassed liquid pulverizing and magnetic-field sintering keep Sm-Fe-N magnets low in oxygen and fine in grain size to raise flux density and coercive force.
- Soft Magnetic Alloy Ribbon Oxide Profile for Corrosion Resistance
P and Si oxide peaks within 20 nm of the ribbon surface limit Fe oxidation, improving corrosion resistance without sacrificing magnetic material.