Attributes of Ceramic Material

High intrinsic coercive force
Tooling is expensive
Least expensive material compared to alnico and rare earth magnets
Limited to simple shapes due to manufacturing process
Lower service temperature than alnico, greater than rare earth
Finishing requires diamond cutting or grinding wheel
Lower energy product than alnico and rare earth magnets
Most common grades of ceramic are 1, 5 and 8 (1-8 possible)
Grade 8 is the strongest ceramic material available

Applications of Ceramic Magnets

• Speaker magnets
• DC brushless motors
• Magnetic Resonance Imaging (MRI)
• Magnetos used on lawnmowers and outboard motors
• DC permanent magnet motors (used in cars)
• Separators (separate ferrous material from non-ferrous)
• Used in magnetic assemblies designed for lifting, holding, retrieving and separating