3d Printed Metallic Glass Components Increase Electric Motor Efficiency
3D printed metallic glass components let motor buyers optimize efficiency and reduce battery dependencies.
Soft Magnetic Alloys
Magnetic Classification
Ferromagnetic materials exhibiting low coercivity and high initial magnetic permeability magnetize and demagnetize efficiently under alternating electromagnetic fields. Specialized soft magnetic alloys direct magnetic flux in electrical transformer cores, motor stators, inductors, and magnetic shielding housings. These compositions include electrical silicon steels or nickel-iron Permalloys engineered for high flux density.
The class excludes permanent hard magnetic materials designed to retain magnetization against substantial opposing demagnetizing forces.
Hysteresis Characteristic
Narrow hysteresis loops minimize energy dissipation per electrical cycle, lowering core iron losses caused by alternating flux reversals. High crystalline ordering and minimal mechanical lattice strain permit rapid magnetic domain wall movement during field oscillations. Final high-temperature annealing under pure hydrogen atmospheres removes interstitial carbon and nitrogen impurities while enlarging crystallite grain sizes.
Sheet laminations coated with surface insulation layers restrict eddy current paths, reducing parasitic high-frequency resistive heating within the core volume. Precision stamping processes shape these laminations while introducing minimal residual edge stresses.
Saturation Threshold
External magnetic fields driving the core past its magnetic saturation level induce sharp permeability drops. Thermal overheating above the material Curie temperature destroys spontaneous magnetic ordering, rendering the component paramagnetic. Soft magnetic alloys govern electrical conversion efficiency across utility transformers and vehicle powertrain inductors.