1. NdFeB is a kind of magnet, which is different from the magnets we usually see. Because of its excellent magnetic properties, it is called "magneto". Neodymium iron boron contains a lot of rare earth elements, such as neodymium, iron and boron. It is hard and brittle.
Because the surface is easy to be oxidized and corroded, NdFeB must be coated. Surface chemical passivation is one of the best solutions.
As a kind of rare earth permanent magnetic material, NdFeB has high magnetic energy product and coercivity, and the advantages of high energy density make NdFeB permanent magnetic material widely used in modern industry and electronic technology, which makes it possible to miniaturize, lighten and thin instruments, electro acoustic motor, magnetic separation and magnetization equipment.
The advantages of NdFeB are high cost performance and good mechanical properties; The disadvantages are low working temperature, poor temperature characteristics, and easy to be powdered and corroded. It must be improved by adjusting its chemical composition and adopting surface treatment methods to meet the requirements of practical application.
Neodymium iron boron magnetic material, as the latest result of the development of rare earth permanent magnetic materials, is known as "magneto king" because of its excellent magnetic properties. Neodymium iron boron magnetic materials are alloys of praseodymium, neodymium, ferroboron, etc. Also known as magnetic steel.,
2. NdFeB magnets can be divided into bonded NdFeB magnets and sintered NdFeB magnets. Bonding is actually injection molding, and sintering is vacuum molding through high temperature heating!   NdFeB magnet is a permanent magnet with magnetic force up to now. The material grade is n35-n52; Various shapes can be processed according to specific requirements: round, square, drilling, magnetic tile, magnetic rod, convex, trapezoid, etc; Despite these advantages, but the surface is easy to rust, so usually need to do some protective surface treatment: nickel plating, zinc plating, gold plating, epoxy resin plating, etc. Ordinary Nd-Fe-B magnets are suitable for the environment temperature below 80 degrees, but there are several kinds of magnets that can withstand 200 degrees. Mainly used in electronics, electrical appliances, packaging, motor, toys, leather goods, automotive machinery, etc.