Bonded NdFeB Magnet (Bonded Neodymium-Iron-Boron)

Category	Details
Composition	NdFeB magnetic powder mixed with resin/plastic, molded via injection or compression.
Cost Performance	- Lower magnetic performance than sintered NdFeB. - Low processing cost, suitable for complex shapes and miniaturization.
Applications	- Micro-motors (drones, camera shutters). - Consumer electronics (headphone magnets). - Office equipment (printer rollers). - Smart home components.
Magnetic Properties	- Low magnetic energy product (6–15 MGOe). - Moderate remanence (Br) and coercivity (Hc). - Poor temperature stability (max operating temp: ≤150°C).
Work Environment	- Poor corrosion resistance (requires epoxy resin coating). - Can be shaped into thin-walled or complex parts. - Better vibration resistance than sintered NdFeB.

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Comparison Notes




1. Magnetic Performance vs. Cost:

• Bonded NdFeB has lower energy product (6–15 MGOe) than sintered NdFeB (30–52 MGOe) but higher than Ferrites (3–6 MGOe).

• Cost-effective for mass-producing intricate shapes (no high-temperature sintering required).

2. Applications:

• Bonded NdFeB: Miniaturized, lightweight applications (e.g., consumer electronics, micro-motors).

• Sintered NdFeB: High-performance fields (e.g., EVs, wind turbines).

• Ferrites: Low-cost, high-volume uses (e.g., household appliances).

3. Environmental Adaptability:

• Temperature resistance (≤150°C) and corrosion resistance (requires coating) are weaker than SmCo (300°C) and AlNiCo (550°C).

• Superior vibration resistance and shape flexibility compared to sintered NdFeB.

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4. Key Advantages:

• Design Flexibility: Enables thin-walled, complex geometries via injection molding.