What's the difference between a permanent ferrite magnet and a NdFeB magnet?
Ferrite magnets are ferromagnetic metal oxides. As far as electrical characteristics are concerned, ferrite resistivity is much larger than metal and alloy magnetic materials, and has higher dielectric properties. The magnetic properties of ferrites also exhibit high permeability at high frequencies. As a result, ferrite has become a high frequency, weak current field of non-metallic materials widely used. Non metallic magnetic materials, composite oxide and one or more other metal oxides (or ferrite). Magnetic force is usually 800-1000 Gauss, often used for speakers, speakers and other equipment.
The difference between NdFeB magnet and ferrite magnet is mainly as follows: 1. ferrite magnet is inferior to ndfeb. 2. on the price, ferrite is much cheaper than NdFeB magnets. 3. NdFeB magnets have good temperature resistance, while ordinary NdFeB usually only 80 degrees, more than the work temperature will appear demagnetization. 4. ferrite stability is very good, it is itself oxide, very stable, NdFeB is alloy, and its easy to oxidize, must do coating protection.
The advantages of NdFeB magnets is cost-effective, with good mechanical properties; shortcomings in the Curie temperature of low temperature performance, easy powder corrosion, surface treatment must be adjusted by the chemical composition and take to improve, in order to meet the requirement of practical application. NdFeB belongs to the third generation of rare earth permanent magnet material. It has the characteristics of small volume, light weight and strong magnetism. It is the best magnet with the best performance and price, and is regarded as "magnetic king" in the magnetic field. The advantages of high energy density make NdFeB permanent magnet materials widely used in modern industry and electronic technology. In the bare state, the magnetic force can reach about 3500 Gauss.
