What is sintered neodymium iron boron magnet?

Sintered neodymium iron boron magnets are the most commonly used type of permanent magnet material. It is made of alloys of neodymium, iron, and boron, forming a Nd2Fe14B tetragonal crystal structure. Meanwhile, according to its raw material composition, it is a rare earth magnet.

How is sintered neodymium iron boron magnet made?

Customized sintered neodymium iron boron magnets are a complex process that includes the preparation, melting, grinding, pressing, sintering, machining, electroplating, magnetization, inspection, and packaging of formula powders.

Preparing the formula magnetic powder is the most important process. Because technicians can add additional rare earth elements to adjust magnetic properties, such as cobalt (Co) for high temperatures and dysprosium (Dy) for better intrinsic coercivity.

Why is sintered neodymium iron boron permanent magnet so sturdy?

Melted alloy ingots are made into powder using powder metallurgy technology, which is directionally formed in a magnetic field. So after sintering and densification of the formed rough embryo in inert gas or vacuum, the sintered neodymium iron boron has a relatively high magnetic energy product and coercivity, high cost-effectiveness, and good mechanical properties.