Introduction of Hard Ferrite Magnet 

Hard ferrite (ceramic) magnets were developed in the 1960's as a low cost alternative to metallic magnets. As a kind of permanent magnet, it is composed of barium or strontium. It is hard, brittle and possesses lower magnetic energy compared with other permanent magnets. However, it has excellent corrosion and demagnetization resistance properties and very competitive price, which make it quite popular and are still widely used today. If measured by weight, ferrite represents more than 75 percent of the world magnet consumption. It is the first choice for most types of DC motors, magnetic separators, magnetic resonance imaging and automotive sensors.

Ferrite magnet is charcoal gray in color and usually appear in the forms of blocks, discs, rings, cylinders, sometimes arcs for motors and other customized forms. They are manufactured by a die pressing followed by sintering process and have normal operating capabilities from -40℃ to 250℃.