Magnetically Aligned Gap Magnet with Applied Fields

CMI Highlight: Magnetically Aligned Gap Magnet with Applied Fields

illustration of induction coil
MAGMA technology (Magnetically Aligned Gap Magnet with Applied Fields). Schematic displays an induction coil with solidifying molten metal being oriented in a uniform magnetic field.

CMI researchers at Ames National Laboratory and Oak Ridge National Laboratory conducted the research for this highlight.

Innovation
Production of fully dense anisotropic Cerium Gap Magnets (CGMs) via one-step casting and heat treatment in applied magnetic fields.

Achievement

  • 50% reduction of magnet processing steps with 33% increased performance, increased magnetic alignment and homogeneity. Frees up critical neodymium dysprosium their current middle energy applications by using abundant cerium.
  • Technique potentially applicable for high-temperature samarium and cobalt, significantly improving price/performance for mass-market applications.

Significance and Impact
Replacing rare earth magnets in intermediate applications, using CMI CGM compositions and scalable process to deliver affordable performance while reducing supply risk and energy consumption.

Hub Target Addressed
Accelerated magnet discovery and maturation.

bar graph
Performance and processing enhancements from MAGMA compared with traditional processing.