Iron nitride permanent magnets made with DIY ball mill and tested with DIY magnetometer

2025-05-27

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I show the process of making iron nitride permanent magnets by ball milling ammonium nitrate and iron powder. Some researchers think that the theoretical performance limit of iron nitride magnets is higher than neodymium iron boron, but so far, no one has been able to show this.

Main paper that I used: https://sci-hub.se/http://dx.doi.org/10.1002/adem.201500455

https://www.connectedpapers.com/main/d9bb02f3a85d6f74be490b1504435b87403ab191/Preparation-of-an-%CE%B1%E2%80%B3%E2%80%90Fe16N2-Magnet-via-a-Ball-Milling-and-Shock-Compaction-Approach-%E2%80%89/graph

Company working on commercializing iron nitride: https://www.nironmagnetics.com/

More references:

https://sci-hub.ru/https://doi.org/10.1016/j.jmmm.2019.165962

https://conservancy.umn.edu/items/5ba0e697-ff69-42e6-9773-4b1dc965c604

https://sci-hub.se/https://doi.org/10.1016/j.progsolidstchem.2017.06.001

https://www.lakeshore.com/docs/default-source/product-downloads/application-notes/permanent-magnet-paper.pdf?sfvrsn=1ccd61c7_1

https://par.nsf.gov/servlets/purl/10203577

https://sci-hub.ru/https://doi.org/10.1063/1.5017708

Planetary ball mill plans and materials list: https://github.com/benkrasnow/Planetary_Ball_Mill

Alumitone pickup: https://lacemusic.com/products/alumitone-humbucker

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