8 MG-Oe Energy Product in NdFeB-Based Alloy with 90% Reduced Neodymium Content

CMI researchers from Ames National Laboratory and Oak Ridge National Laboratory conducted the activity for this highlight

Innovation
Significant energy products and coercivities achieved in an NdFeB-based alloy with 90% of the Nd replaced by low-cost, abundant Cerium and Lanthanum. 

Achievement

  • Demonstration that significant hard magnet performance can be achieved despite great reduction in Nd content.
  • Provisional Patent “High Performance, Critical-Element-Free Permanent Magnet Materials Based on Ce2Fe14B”, D.S. Parker et al, filed April 20, 2023. 

Significance and Impact
Alloy may become a useful NdFeB substitute for many applications employing NdFeB magnets due to lack of a viable alternative.

Hub Target Addressed
Accelerated magnet discovery and maturation.

line graph shows hysteresis loops of MM2Fe12Co2B alloys, employing the indicated sintering aids. Here ’MM’ stands for Mischmetal, a mixture of approximately 60% Cerium, 30% Lanthanum, and 10% Neodymium.
Hysteresis loops of MM2Fe12Co2B alloys, employing the indicated sintering aids. Here ’MM’ stands for Mischmetal, a mixture of approximately 60% Cerium, 30% Lanthanum, and 10% Neodymium.