Synthesis of Al–Al2O3 and Al–Aln Nanoparticle Composites Via Electric Explosion of Wires

Abstract

Composite Al–Al₂O₃ and Al–AlN nanoparticles were synthesized via electric explosion of aluminum wires in an argon–oxygen gas mixture and in nitrogen. The parameters of electric explosion and gas medium affect the size and relative content of nitride and aluminum oxide in the nanoparticles. Processes of forming chemical compounds during aluminum oxidation at the contact surface between explosive products and gas and of nitrogen diffusions into the nanoparticles of the condensed phase are considered.