Ceramic Hard Ferrite Materials

The major raw materials used to manufacture ceramic magnets are iron oxide commonly known as rust and strontium carbonate.

Ceramic hard ferrite materials.

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. They are electrically nonconductive meaning that they are insulators and ferrimagnetic meaning they can easily be magnetized or attracted to a magnet. Grades 5 and 8 ceramic materials are anisotropic and must therefore be magnetized in the manufactured dimension.

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. Ceramic magnets are manufactured using powder technology techniques. Ceramic 1 hard ferrite an isotropic dry pressed ferrite material which may be magnetized in any direction.

These materials are mixed together and then elevated in temperature to 1800 2000 degrees f. At this temperature they undergo a chemical conversion and the resulting material is ferrite. A ferrite is a ceramic material made by mixing and firing large proportions of iron iii oxide fe 2 o 3 rust blended with small proportions of one or more additional metallic elements such as barium manganese nickel and zinc. They exhibit higher levels of magnetic force than do ceramic 1 materials.