Motor Magnet

Motor magnet,usually have huge magnetism and high working temperature, neodymium magnets, smco magnets ferrite magnet are motor magnets,pending on magnetic properties and unit price, neodymium magnet is the best motor magnet of industrial areas.

Neodymium magnets are have the most rich remanence of magnetism, but the working temperature of pure ndfeb magnet is low, formula need adjustment for higher working temperature of neodymium magnet.Surface coating is needed to prevent neodymium magnet from corrosion.

Ferrite magnet are economic magnet which have relatively low magnetism,(1/10) Br of neodymium magnet) thus ferrite magnet in a motor is very big pf size.And because ferrite magnet is weak in magnetic properties,it will cost more electricity while motor works, but ferrite is have high temperature coercivity hence very hard to get demagnetization.

Smco magnet are permanent magnet that have highest working temperature while have high magnetic properties.Smco magnets are used in aerospace and military areas, storage reserves of samarium mineral are very limited on earth, Since there is no magnet could replace smco magnet, smco magnets are the most expensive magnets.