Neodymium Iron Boron Magnets (NdFeB)


Best in magnetic performance and energy. The NdFeB magnet is currently the strongest one available. General Information: Neodymium Iron Boron (NdFeB) magnets, of the Rare Earth class, have been commercially available since the mid -1980's. Their popularity has grown rapidly due to their high Maximum Energy Product and their wide range of available shapes, sizes, and grades. Today, a Remanence of over 1,4 Tesla is possible. Energy products of up to 50MGOe are currently available. The majority of NdFeB magnets are anisotropic and can only be magnetized in the orientation direction. In general, magnetizing fields of approximately 30KOe are required to saturate NdFeB magnets. An important disadvantage of the NdFeB magnet is its sensitivity to corrosion. Therefore, to prevent undesired oxidation, the finnished magnets are coated with a zinc-, nickel-, tin-, al-, au- or epoxy layer. The NdFeB magnets are produced in big blocks which are pressed in a mold and then sintered. A smaller...

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