In-situ alignment of filament-based 3D printed magnets

This CMI research was conducted at Ames Laboratory. 

Achievement:
Demonstrated ability to perform in-situ alignment of magnetic materials in polymer-based bonded magnets during 3D printing

Significance and impact:

• Applies intense magnetic field during 3D printing which results in alignment of magnet particles
• Designed as an integrated attachment to existing 3D additive manufacturing printers and controlled through the printer’s motor and position controls
• Electromagnetic field source enables control of magnetic field via current control during 3D printing
• Eliminates risk of thermal demagnetization if permanent magnets were used to provide the in-situ field

Details and Next Steps:

• Increase loading fraction of magnet powder and, thus, better performing bonded magnets
• Extend to other magnet materials (e.g., Nd-Fe-B)