Ferrite (Ceramic) Magnets
Ferrite magnet, composed essentially of Fe2 O3 (Ferric Oxide) and BaCo3 (Bariumar Bonate) or SrCo3(Strontium Carbonate), offers an excellent cost/performance ratio.
It is manufactured under a powder metallurgy process and classified into two types: Isotropic and Anisotropic. Isotropic is molded in absence of a magnetic field. Anisotropic can be further divided into "wet" and "dry" depending on pressing methods.
Ferrite magnet is substantially a kind of ceramic. Due to its excellent resistance to demagnetization and corrosion as well as the advantage of economic cost, it has been widely used in a variety of products and become popular in the market.
Practically, it is not necessary to make dimension precise by machining process, tolerance is generally approximately ?0.2% though it still depends on magnet shape. For a special application, the dimensional tolerance could be reduced to ?.05mm by grinding after machining process. The residual flux density of ferrite magnet is subject to dimensional ratio, or magnet shape. If a magnet is designed for special use, such details as dimensional ratio and magnetizing direction are requested to provide for our reference.
Features:
1. High coercive force, good uniformity in magnetic energy distribution and constant magnetic flux.
2. Suitable for mass production.
3. Easy to control uniformity.
4. High electric resistance, acting like an insulator.
Application: It can be used in domestic electrical equipments, micro motors,magnetic separators, magnetic chucks, electro acoustic devices,instruments & meters and magnetic couplers
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