Invention Reference Number
A novel approach has been developed for fabricating bonded magnets using Samarium Iron Nitride (Sm-Fe-N) in a polymer matrix, achieving superior magnetic properties and stability. This innovation addresses challenges in producing high-performance, rare-earth magnets for industrial applications, particularly where thermal stability and corrosion resistance are critical.
Description
The method combines Sm-Fe-N powders with a polymer matrix to create bonded magnets through extrusion and compression molding techniques. Post-magnetic field annealing process enhances the degree of magnetic particle alignment, resulting in high energy products and improved performance. Key features include minimized particle-to-particle interactions and optimized polymer content for mechanical strength. The fabricated magnets demonstrate high magnetic strength, thermal stability across a range of temperatures, and suitability for even low-temperature applications. This technology represents a significant advancement in the field of magnetic materials, providing a sustainable alternative to traditional rare-earth magnets.
Benefits
- High magnetic energy product with optimized particle alignment
- Superior thermal stability and resistance to corrosion
- Enhanced mechanical strength and durability
Applications and Industries
- Electric motors and generators
- Renewable energy systems such as wind turbines
- Automotive and aerospace components
- Advanced industrial machinery
Contact
To learn more about this technology, email partnerships@ornl.gov or call 865-574-1051.
