Characteristics of permanent magnets
Permanent magnet is a material with permanent magnetism, usually made of materials such as ferrite, neodymium iron boron, cobalt magnets, etc. Its main features include:
1. High magnetic performance: Permanent magnets have high magnetic induction intensity and energy product. Compared with traditional magnetic materials such as iron and steel, permanent magnets have stronger magnetic properties.
2. High stability: Permanent magnets have good magnetic stability and are not affected by external magnetic fields, temperature, humidity, and other factors. Therefore, permanent magnets are commonly used in applications that require stable magnetic performance.
3. Complex shapes: Permanent magnets have the ability to prepare complex shapes, such as magnets with different shapes and sizes that can be produced through injection molding, extrusion, and other methods.
4. Lightweight: Permanent magnets have high magnetic properties and low specific gravity, which can achieve lightweight magnetic materials and can be used in fields such as electric vehicles and wind turbines.
5. High cost: Permanent magnets usually require materials such as rare metals or precious metals to be prepared, so their cost is relatively high.
In summary, permanent magnets have the characteristics of high magnetic performance, high stability, ability to prepare complex shapes, and lightweight. However, their cost is high and they require the use of rare or precious metals for preparation.
