A black or brown powder used primarily for its thermal properties, boron powder comes in a variety of granule sizes, purities, and other configurations to better match the specific needs of various applications. 

• Abrasive: Applied properly, boron can serve as a rugged, highly abrasive surface for any number of purposes. Combined with it’s thermal properties, this makes it highly effective for high speed cutting and similar tasks.
• Biocide: Borates in general work to kill a variety of insects and similar pests through simple physical destruction, making them one of the most universally effective pest control options.
• Corrosion inhibition: Boron compounds produced with boron nanopowders make it useful in anti-freeze, brake fluids, hydrolic systems, and other applications where ferrous materials need protection against corrosion.

"Boron Nanoparticles/Nanopowders ( B, 97.5%, <100nm)" -Retrieved 6/11/2021 from https://www.ssnano.com/inc/sdetail/boron_nanoparticles__nanopowders___b__99_9____100nm_/799

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