Commercial-Scale Modification of NdFeB Magnets under Laser-Assisted Conditions.

Area of Science:

• Materials Science
• Surface Engineering
• Magnetism

Background:

• Neodymium-iron-boron (NdFeB) magnets, utilizing rare earth elements (REEs), are vital for green energy technologies (wind turbines, electric vehicles).
• Growing demand and REE depletion necessitate methods to extend magnet lifespan and improve performance against environmental degradation.
• Nanostructured coatings are explored to enhance magnet functionality and protection against humidity, pressure, and temperature.

Purpose of the Study:

• To develop and assess a scalable laser cladding strategy for modifying and regenerating NdFeB magnets.
• To investigate the impact of laser cladding using four different micropowders on NdFeB magnet properties.

Main Methods:

• Commercial NdFeB samples were modified using a laser cladding technique.
• Four distinct micropowders were employed for surface modification.
• Characterization included analysis of morphology, structure, chemical composition, crystallography, and magnetic flux density.

Main Results:

• Laser cladding successfully modified the NdFeB magnet surfaces.
• The treated magnets exhibited changes in morphology, structure, and composition.
• Magnetic flux density was evaluated, indicating potential for property enhancement.

Conclusions:

• Laser cladding presents a viable and promising strategy for modifying and regenerating REE-based permanent magnets.
• This technique shows potential for improving the durability and resistance of NdFeB components.
• The findings contribute to addressing REE scarcity by extending the useful life of critical magnetic materials.