Problems of Manufacturing Neodymium Magnets
1. Oxidation
2. Break apart
3. Low density: low (Jr , Br ) or low (BH)m can be improved by sintered; low (bHc) can be improved by lengthening the sintered time.
4. Lack of angle
5. Can not polished
6. Wrong size
7. Bad coating
8. Instability in the working temperature

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