Introduction to Basic Composition and Microstructure of Sintered NdFeB Magnet

Introduction to Basic Composition and Microstructure of Sintered NdFeB Magnet Sintered neodymium iron boron (NdFeB) magnet or neodymium (Nd) magnet, as its name implies, contains essential rare earth Nd element. Nd atoms, coupling with ferromagnetic element iron (Fe) atoms, help the magnet obtain high remanence (Br) and maximum energy product ((BH)max), which makes it extraordinary compared with other permanent magnets. In commercial sintered NdFeB magnet, Nd element is usually partially substituted by other rare earth elements including praseodymium (Pr), dysprosium… Read More

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How to Understand the Grade of Sintered NdFeB Magnet?

How to Understand the Grade of Sintered NdFeB Magnet? Generally, the grades of sintered neodymium iron boron (NdFeB) magnets are strings containing three parts, i.e. “N” + “number” + “letter”. The left part “N” is the initial letter of neodymium, meaning it is sintered NdFeB magnet. So it is constant for all the grades. The middle part “number” represents value of maximum energy product (BH)max (in CGS unit). The value varies from 28 to 52. The right part “letter” reflects… Read More

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