pippee/iStock/Getty Images Plus
3D magnet

Can 3D-Printed Magnets Replace Rare Earth Magnets?

June 13, 2018
Additive manufacturing can turn everyday magnetic material into alternatives for expansive rare-earth magnets.

Engineers at the Amess Laboratory’s Critical Materials Institute used laser 3D metal printing to turn permanent magnet material into an economical alternative to more expensive rare-earth neodymium iron boron (NdFeB) magnets. The researchers experimented with magnets 3D printed from different combinations of cobalt, iron, copper, and cerium (a less-expensive, more-plentiful rare earth material than neodymium). The researchers produced a range of compositions in samples that were printed using a 3D laser metal printer.

“The ceria-based alloy was a known magnetic material, but we wanted to revisit it to see if we could find exceptional magnetic properties,” says CMI scientist Ryan Ott. “With four elements, there is a vast number of compositions to explore, and3D printing greatly accelerates the search process.”

A range of magnets was created using 3D printing, cutting production time from weeks to a mere two hours. Samples with the most promising properties were identified; a second set of those samples were then made by conventional casting methods and compared to the 3D printed originals. This comparison confirmed that the chosen samples has a higher level of magnetism.

“It is very challenging to use laser printing to identify potential permanent magnet phases for bulk materials because of the need to develop the necessary microstructure,” says CMI scientist Ikenna Nlebedim. “But this research shows that additive manufacturing can be used to rapidly and economically identifying promising permanent magnet alloys.”

Sponsored Recommendations

Flexible Power and Energy Systems for the Evolving Factory

Aug. 29, 2024
Exploring industrial drives, power supplies, and energy solutions to reduce peak power usage and installation costs, & to promote overall system efficiency

Timber Recanting with SEW-EURODRIVE!

Aug. 29, 2024
SEW-EURODRIVE's VFDs and gearmotors enhance timber resawing by delivering precise, efficient cuts while reducing equipment stress. Upgrade your sawmill to improve safety, yield...

Advancing Automation with Linear Motors and Electric Cylinders

Aug. 28, 2024
With SEW‑EURODRIVE, you get first-class linear motors for applications that require direct translational movement.

Gear Up for the Toughest Jobs!

Aug. 28, 2024
Check out SEW-EURODRIVEs heavy-duty gear units, built to power through mining, cement, and steel challenges with ease!

Voice your opinion!

To join the conversation, and become an exclusive member of Machine Design, create an account today!