Magnetic Longevity of NdFeB Magnets (English, 100 Words)

1. Long-Term Stability

   • Under proper conditions (room temperature, anti-corrosion coatings), NdFeB magnets retain >95% magnetic flux for 30-50 years 12.

   
   

2. Temperature Impact

   • Performance degrades faster at high temperatures (e.g., >80°C). High-grade variants (SH/UH) extend tolerance to 150-220°C 13.

   
   

3. Corrosion Risks

   • Uncoated magnets exposed to humidity/chemicals show accelerated decay (surface oxidation reduces lifespan by ~50%) 18.

   
   

4. Demagnetization Factors

   • Avoid mechanical shocks, reverse magnetic fields, and exceeding temperature limits to prevent irreversible flux loss 67.

   
   

Key: Use coated magnets in stable environments for maximum longevity.