What's the difference between NdFeb and ferrite?

The advantage of Neodymium iron boron is cost-effective, with good mechanical properties; The disadvantage is low temperature point, poor temperature characteristics, and easy to powder corrosion, it must be adjusted by chemical composition and surface treatment methods to improve, to meet the requirements of practical application. Ferrite is a ferromagnetic metal oxide. In terms of electrical properties, ferrite has a much higher resistivity than metal or alloy magnetic materials, and it also has higher dielectric properties. Ferrite also exhibits high permeability at high frequencies. Therefore, ferrite has been widely used in the field of high frequency weak current non-metallic magnetic materials. Ndfeb belongs to the third generation of rare earth permanent magnetic material. Characterized by small size, light weight and strong magnetism, it is the best performance-to-price magnet at present and is known as the king of magnetism in the field of magnetism. The advantage of high energy density makes ndFeb permanent magnet widely used in modern industry and electronic technology. In the bare magnetic state, the magnetic force can reach about 3500 Gauss. Ferrite, also known as ferrooxygen or magnetic porcelain, is a non-metallic magnetic material, which is a composite oxide of magnetic ferric oxide and one or more other metal oxides (or n-ferrite). Magnetic force is usually 800-1000 Gauss, often used in speakers, loudspeakers and other instruments.

Ndfeb | magnetic ring

The main differences between NdFeb and ferrite magnets are as follows:

1. Ferrite magnet performance is not as good as Ndfeb.

Ferrite is much cheaper than NdFeb magnets.

3. Ndfeb magnets are highly temperature-resistant, while normal NdFeb magnets are usually only at 80 degrees. Beyond this working temperature, demagnetization will occur.

4. Ferrite is very stable, it is oxide itself, very stable, Ndfeb is an alloy, it is easy to oxidize, must be done coating protection.