Hard Ferrite/Ceramic

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Hard Ferrite/Ceramic Magnets

The chemical composition of Ferrite magnets is SrO-6(Fe2O3), Strontium Hexaferrite. The raw materials used to produce ferrite magnets are strontium carbonate and iron oxide, both of which are readily available and low in cost. As a result, the use of ferrite magnets in most applications is more economical than other materials.
Ceramic - Injection Molded

Ceramic - Sintered

Ceramic - Bonded

Ferrite/Ceramic Magnetic Performance

Sintered Ceramic/Ferrite magnets are formed by compaction in dedicated, multi-cavity dies followed by sintering in high-temperature furnaces.

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Ceramic/Ferrite Magnetic Performance

Sintered Ceramic/Ferrite magnets are formed by compaction in dedicated, multi-cavity dies followed by sintering in high-temperature furnaces. This produces a hard, brittle part that requires specialized equipment for grinding to close tolerances.

While physically quite strong, these magnets (like all cast or sintered magnetic materials) should not be considered a structural member in an assembly. And like most ceramics, they are brittle not unlike glass, and should be handled with due care to avoid chipping and cracking.

Here are more helpful attributes for Ceramic/Ferrite Magnets:

  • The corrosion resistance of Ceramic/Ferrite is considered excellent, and no surface treatments are required.
  • Ferrite magnets may have a thin film of fine magnet powder on the surface and for clean, non-contaminated applications some form of coating may be required.
  • They’re rather porous, and there may be applications where the surface should be sealed.
  • Urethanes and epoxies work well.
  • In addition, ferrite magnets lend themselves to printing.

Hard Ferrite magnets have excellent corrosion resistance and have normal operating capabilities between -40°C and +250°C. At extremely low temperatures, there’s a risk of permanent demagnetization in magnet systems with low permeance coefficients. Ferrite magnets have good intrinsic coercivity, making them resistant to demagnetizing effects.

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Common Applications for Hard Ferrite/Ceramic

Ferrite magnets, prized for their affordability, serve as crucial components across a diverse array of applications.

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Common Applications for Hard Ferrite/Ceramic

Due to their low cost, Ferrite magnets enable a wide range of applications:

  • DC permanent magnet motors, especially for the automotive industry (blowers, window lifts, windshield wiper motors, etc.)
  • Magnetic couplings
  • Separators (removing ferrous materials from liquid, powder, and bulk commodities)
  • Holding-magnet systems
  • Sensor applications
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Don’t let the challenges of finding a reliable source for versatile and dependable Ferrite/Ceramic magnets slow you down. At BJA Magnetics, we’re here to cater to all your magnet-related needs with our wide range of magnetic materials and comprehensive services. Whether you require Ferrite/Ceramic magnets for specific applications, we have a diverse selection to fulfill your requirements. Reach out to us for any inquiries about Ferrite/Ceramic magnets, and we’ll make sure to provide you with the perfect solution for your magnetic needs.