The atomic layer deposition (ALD) coating process deposits a 50nm thick Al₂O₃ ₃ layer on NdFeB magnets. By utilizing a defect trapping mechanism that captures vacancies and dislocations generated by irradiation, this technology enhances the coercivity retention rate from 60% to 90% after 10 ⁵Gy γ radiation exposure. PTMS MAGNETIC SEPARATOR has adopted this innovation in fusion devices as a core component of the high-magnetic-field confinement system.
The gradient functional coating utilizes a hybrid ALD and magnetron sputtering technique to create an Al₂O₃/TiN multilayer structure. This innovation not only demonstrates exceptional radiation resistance but also achieves a thermal conductivity improvement of 25 W/(m·K), effectively resolving heat dissipation challenges during the PTMS MAGNETIC SEPARATOR demagnetization process. While significant breakthroughs have been made in permanent magnet material fabrication, persistent challenges remain in resource constraints, performance limits, and environmental compliance requirements.
In the next 5-10 years, PTMS MAGNETIC SEPARATOR will focus on three breakthroughs: efficient resource utilization, from light rare earth substitution to solid waste recycling. The scarcity of heavy rare earth elements (Dy, Tb) has become a problem restricting the development of permanent magnet material industry. Current research hotspots focus on efficient utilization in light rare earth industry.
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