Reaching magnetic performance targetsIron-nitride magnets must achieve or exceed the saturation magnetization and coercivity of NdFeB magnets to win adoption.
First-mover manufacturing challengesScaling from lab/pilot production to 1,500 tpa requires solving yield, quality, and cost challenges not yet encountered.
Physics limits
Magnetization physicsIron-nitride's maximum saturation magnetization is lower than NdFeB, limiting energy density in size-constrained applications.
Manufacturing complexitySynthesis of iron-nitride with the required microstructure is more complex than making conventional magnets from rare-earth alloys.
How it works
3 parts
Materials
Iron and nitrogen
Iron-nitride magnets use abundant iron and nitrogen; no rare-earth or critical minerals in the composition.
Manufacturing
Proprietary synthesis and processing
Company-developed processes create iron-nitride magnetic material with controlled microstructure and magnetic properties.
Applications
Drop-in replacement magnets
Magnets can replace rare-earth magnets in many applications: motors, cooling systems, defense electronics, drones, and robotics.
Rare-earth-free magnets, iron nitride, advanced manufacturing
Niron Magnetics develops and manufactures iron-nitride permanent magnets that work without rare-earth elements. The company is building a 1,500 tonne per year manufacturing facility in Sartell, Minnesota, with support from $150M in government loans and private investment.
Niron's iron-nitride magnets eliminate dependence on rare-earth elements controlled by hostile supply chains.
A 1,500 tonne per year plant in Sartell, Minnesota will be fully operational by end of 2027, creating 175+ manufacturing jobs.
The company secured $150M in DOD loans, $150M from the Shakopee Mdewakanton Sioux Community, and a $10M state grant.