: providing an organoboron precursor, an inert carrier gas, and a nitriding agent; aerosolizing the precursor; introducing the carrier gas into a chamber containing the aerosolized precursor and forming a combined gas stream; sweeping the combined gas stream into a heated furnace; injecting the nitriding agent into the furnace; allowing the nitriding agent and aerosolized precursor to react to form a powder of a boron-nitrogen-oxygen-carbon-hydrogen composition 