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Types of Ferrite Magnet

The good thing that a Ferrite Magnets has is the easy availability. As the raw material it uses is available in sufficient quantity, there is no chance of having a scarcity in the production Ferrite Magnets .It is a type of ceramic magnets. And like all other ceramic magnets, it has the easily breaking quality. But due to its high-coercive attribute, demagnetization is not possible. The raw material used to make Ferrite magnets is the ferric oxide. It is a cheap magnet among all other magnets available in market due to its easy availability. Moreover, it is a magnet that can be used in flat forms. For the preparation of Ferrite Magnets, the magnet is mold by pressing with ferric oxide dust. Then it is to be heated in a furnace in a temperature of 1200 degrees Celsius approximately. Therefore they are fitted for mass production and can be available at economical prices. The two basic types of Ferrite magnets are Anisotropic Ferrite and Isotropic Ferrite.

Anisotropic Ferrite Magnet

As we know the coercive force in this magnet is strong, it cannot be demagnetization. It is a

ceramic magnet. Ferrite magnet is extremely anticorrosive. The unique feature of this magnet is

that, it is best fitted for a flat shape magnet to use. While the weak point here is that it is

supposed to be easily broken. From long back Ferrite magnet is used in the mechanism of audio

speakers and headphones. But now due technical innovation it gets lighter. In recent days

Ferrite magnet is used progressively more for automobile motors or generators.

The other saving grace is the abundant supply of raw material of Ferrite magnet. As there is

plenty of ferric oxide, used as raw materials of Ferrite magnet, it is possible for the

manufacturers to produce the magnet at the lowest price amongst all other present day

magnets.

A wet type of Granulated powder of ferric oxide mixed with a little portion of strontium with also water into a slurry state. After that it has been poured and pressed in a metal mold. Then the real molding process starts. It is done in a compact magnetic field so that even smallest units of the magnet are aligned in a certain specific direction, building them an Anisotropic Ferrite magnet. Following undergone through the heated furnace, thus the magnets are refined and polished into the preferred sizes of requirement and rinse for a finishing touch.

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A dry type Granulated powder of ferric oxide is pressed in a mold, and then heated in a furnace to make this magnet. However, the magnetic force present in it is approximately 7% weaker than the wet type of magnet.

Isotropic Ferrite Magnet:

We can get Isotropic Ferrite Magnet by mixing a correct portion of ferric oxide with a few percent of Barium. It is powered with granulated before being pressed. Her no need to do the molding with a magnetic field. The magnetism present in it is about half of that of an Anisotropic Ferrite magnet as the direction of the magnetic force aligns is in an axial or radial direction.

For more information about various magnets, please visit http://www.usrareearthmagnet.com/