Ceramic Hard Ferrite Materials

Field magnets for reed switch actuators electron beam correction and.

Ceramic hard ferrite materials.

They are electrically nonconductive meaning that they are insulators and ferrimagnetic meaning they can easily be magnetized or attracted to a magnet. At this temperature they undergo a chemical conversion and the resulting material is ferrite. Ceramic ferrite magnet material was first formulated in the 1950s and then further developed in the 1960s as a less expensive alternative to other types of magnet materials. Hard ferrite magnets have excellent corrosion resistance and have normal operating capabilities between 40 c and 250 c.

Grades 5 and 8 ceramic materials are anisotropic and must therefore be magnetized in the manufactured dimension. Ceramic magnets are manufactured using powder technology techniques. They exhibit higher levels of magnetic force than do ceramic 1 materials. Ceramic 1 hard ferrite an isotropic dry pressed ferrite material which may be magnetized in any direction.

The major raw materials used to manufacture ceramic magnets are iron oxide commonly known as rust and strontium carbonate. Typical applications include latches axial magnetic couplings for water meters frictionless bearings for watt hour meters stepper motors magnetic sensors ie. Home material grades hard ferrite ceramic the chemical composition of ferrite magnets is sro 6 fe2o3 strontium hexaferrite. These materials are mixed together and then elevated in temperature to 1800 2000 degrees f.