Grain boundary diffusion

Grain boundary diffusion technology Can reduce the use volume of the rare earth (dysprosium /terbium) so that it can save the heavy rare earth resource effectively, and decreases the production cost of the magnet as well as enhance the comprehensive cost performance of high grade neodymium magnet.

Aiming at the magnets with same grade, compared with traditional technology, GBD technology uses less (HREE) Heavy rare earth and this technology can make the magnet with higher comprehensive cost performance, like 56SH, 52UH, 45EH, 42AH, 38TH, part of them Hcj(kOe)+(BH)max(MGOe)>83.


  • 01

    Uses less Dy/Tb; e.g., 80% of DyFe can be reduced in the production of 45UH

  • 02

    With dysprosium and terbium-free technology to produce cost-effective GBD products

  • 03

    Coercivity improved by 2-3 grades, Hcj improved from 12 KOe to 25-26 KOe

  • 04

    We've already started mass production of 52UH. Ultra-high grades 54UH 50EH can be produced

  • HREE Free
  • Traditional Method

    *GBD is available but traditional method’s price is better

  • Trad.+GBD
  • GBD
  • Under Developing


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