Grain boundary diffusion is a technology that makes heavy rare earth enter into magnet base along the grain boundary through heat treatment to improve coercivity. Thus, less heavy rare earth can be used to achieve high coercivity and high working temperature. We can reduce the use of medium and heavy rare earths by 50% to 80% (The industry standard level is 20-50%). It has significant cost advantage and stable performance for high coercivity magnet.
Less&Free Heavy Rare Earth Magnet is to improve the microstructure of products by refining the particle size and increasing coercivity to achieve low content or free heavy rare earth. Thus it can reduce production cost.
microstructure of magnet under high power microscope
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