Neodymium-Iron-Boron Magnet

Neodymium-Iron-Boron Magnet Latest News

Recently, a Pilot Plant for the manufacture of Nd-Fe-B (Neodymium-Iron-Boron) rare earth permanent magnets was established at the International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad.

About Neodymium-Iron-Boron Magnet

• The NdFeB magnet is the strongest permanent magnet in the world.
• It is a tetragonal crystal formed of neodymium, iron, and boron.
• It is made mainly from a combination of Neodymium, Iron, Boron, Cobalt and varying levels of Dysprosium and Praseodymium.
• Neodymium Magnets can be divided into three types: 
  • Sintered NdFeB magnets: It has the largest output and the most widely used in the NdFeB family.
  • Bonded NdFeB magnets: This has the advantages of low cost, high dimensional accuracy, a large degree of freedom of shape, good mechanical strength, light specific gravity, etc., and has been widely used in the market. 
  • Hot-pressed NdFeB magnets: They can achieve magnetic properties similar to sintered NdFeB without adding heavy rare earth elements. 
    • They have the advantages of high density, , and high coercivity, but the mechanical properties are not good. high orientation, good corrosion resistance
  • Due to different production processes, they have big differences in product magnetic properties, post-processing, and applications.
• Applications: It is widely used in electronic products, such as hard drives, mobile phones, earphones, and battery-powered tools.

Source: PIB

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