Sintered Rare Earth Neodymium Iron Boron Magnets: Unleashing Exceptional Power

Neodymium Iron Boron (NdFeB) magnets, produced through a refined powder metallurgy process, represent the pinnacle of permanent magnet technology. After sintering, these magnets are carefully sized using grinding or slicing methods, followed by a protective coating and precise magnetization. Boasting the highest energy density among all permanent magnet materials, NdFeB magnets can astonishingly lift up to 1000 times their own weight.

These magnets come in a spectrum of energy and temperature grades, ranging from 33 MGOe to an impressive 63 MGOe in advanced laboratory developments. The maximum operating temperature of these magnets is a function of their intrinsic coercive force (jHc). However, it’s crucial to understand that even high coercivity (SH) materials rated for 150°C experience notable temperature coefficients, leading to a loss of about 0.10% of Remanence per °C in open circuit conditions. These reversible losses can be regained as the temperature drops.

Our inventory includes a comprehensive selection of standard disc and block sizes, while custom sizes can be rapidly produced through diamond slicing or grinding techniques.

An essential aspect to consider is the susceptibility of NdFeB magnets to corrosion, primarily due to their high iron content. While standard coatings offer protection, special care is needed in environments with hydrogen or saltwater exposure. For high-temperature or challenging environments, SmCo magnets might be a better fit, despite their lower energy levels compared to Neodymium magnets.

The versatility of Neodymium magnets spans a vast array of applications, from magic tricks to aerospace engineering, thanks to their exceptional performance and power-to-weight ratio. This has revolutionized design concepts across industries, turning previously inconceivable ideas into tangible realities for modern engineers. Due to their brittle nature and strong magnetic forces, handling NdFeB magnets requires utmost care. For more information on safe handling and other queries, please visit our FAQ section.