Invention Reference Number
Researchers at Oak Ridge National Laboratory have developed a new class of iron-based soft magnetic alloys incorporating a unique additive that enhances strength and formability while maintaining excellent magnetic performance. These alloys can be processed into very thin sheets, enabling improved efficiency in motors and transformers. The technology addresses the long-standing brittleness of high-silicon magnetic materials, offering a cost-effective alternative that can be manufactured through conventional steelmaking processes.
Description
Soft magnetic materials are vital to the performance of motors, transformers, and other electrical devices. Traditional iron-silicon alloys with high silicon content exhibit desirable magnetic properties but are too brittle for practical manufacturing. ORNL’s invention introduces a specialized additive to iron-silicon alloys that restores ductility and allows them to be rolled into ultra-thin sheets while preserving high strength and magnetic efficiency. These thin sheets are suitable for use in vehicle motors, as well as advanced transformers. The innovation enables the use of higher silicon content without the mechanical drawbacks associated with conventional alloys, reducing manufacturing complexity and cost compared to alternative production methods.
Benefits
- Enables thin-sheet production using standard steelmaking techniques
- Lower energy losses at high operating frequencies
- Cost-effective alternative to chemical vapor–deposited electrical steels
Applications and Industries
- Vehicle traction motors
- Power transformers and electrical motors
- Efficient power generation and transmission systems
Contact
To learn more about this technology, email partnerships@ornl.gov or call 865-574-1051
