New Trend Of Motor Magnets
Manufacturers need light, extremely strong magnets to power electric-vehicle motors, and they have long relied on the rare-earth metals neodymium and dysprosium to create them. But those metals are expensive and subject to wild price jumps and shaky supply chains—problems that have become more acute as demand for electric cars grows.
More and more researchers began to find new solution. Currently, there are three main trends:
1. Develop Strong Magnet Free of Dysprosium
Dy is a rare earth mineral that is in extremely short supply and increasingly expensive.
“GBD Neo” magnets offer a combination of high energy density and temperature stability at moderate cost by reducing the amount of Dysprosium (Dy) (GBDD) and Terbium (Tb) (GBDT) used.
This process enhances coercivity while limiting the adverse effects on remanence, when compared to traditional neo manufacturing methods.
This process favors smaller magnets with a thickness of less than 6mm or laminated materials. For high frequency applications at working temperatures approaching 180°C, consider using this product.
2. Recycle Rare Earth Metals
Urban Mining Company (UMC), USA, has made a new process for reclaiming magnets containing rare earth metals to produce new, higher performance neodymium iron boron (Nd2Fe14B)-type sintered magnets.
The methodology offers a practical way to reuse the minerals that are readily available in domestic e-waste.
UMC’s objective is to use 100% recycled Nd2Fe14B powder for the production of new permanent magnets, providing producers with the benefit of a more economical source of rare earth raw metals. (Anthony Caggiano, Materials World magazine)
3. Search for Alternatives to Rare Earths