Ceramic Magnets
Ceramic Magnets Overview
Ceramic magnet material (Ferrite) is one of the most cost effective magnetic materials manufactured in industry. The low cost is due to the cheap, abundant, and non-strategic raw materials used in manufacturing this alloy. Ceramic magnet material (Ferrite) is Strontium Ferrite. The permanent Ceramic magnets made with this material make themselves to large production runs. Ceramic magnet material (Ferrite) has a fair to good resistance to corrosion and it can operate in moderate heat. Ceramic (Ferrite) magnets have a low Energy Product and they are usually used in an assembly containing mild steel.
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Ceramic Magnets Properties
| Grade | Br (KGs) |
Hc (KOe) |
Hci(KOe) | (BH)max (MGOe) |
Curie Temp. (°C) |
Max. Op. Temp (°C) |
Inquiry |
|---|---|---|---|---|---|---|---|
| Ceramic 1 | 2.2 | 1.86 | 3.25 | 1.10 | 450 | 300 | Inquiry |
| Ceramic 5 | 3.8 | 2.4 | 2.5 | 1.1 | 450 | 300 | Inquiry |
| Ceramic 7 | 3.4 | 3.25 | 4.0 | 2.75 | 450 | 300 | Inquiry |
| Ceramic 8 | 3.85 | 2.95 | 3.20 | 3.5 | 450 | 300 | Inquiry |
| Ceramic 10 | 4.2 | 2.95 | 3.05 | 4.2 | 450 | 300 | Inquiry |
Key Advantages
- Does not rust
- Cheap but strong
- It is hard to demagnetize
- Magnetized with multiple poles is acceptable
- Not necessary for surface treatment
Quick Leads
- Density-4.95 g/cm³
- Manufacturing process- sintering (most common), injection molding, extruding or calendaring
- Various shapes- discs, bars, rings, blocks, arc segments, cylinders, etc
- Wide range of grades- from 0103 to 0404. (First 2 digits represent BH.max, and second two digits represent Intrinsic Coercivity, Hci.)
- Saturation magnetizing field required - about 10kOe
- The energy product of Flexible magnets is, however, much lower than that of fully dense, sintered Ferrite magnets
Common Applications
Craft projects Magnetic separators Automotive sensors Refrigerator magnets MRI DC motors