Aluminum-silicon and aluminum-silicon/carbon nanoparticles with core-shell structure synthesized by arc discharge method

Al-Si and carbon coated Al-Si nanoparticles were prepared by DC arc discharge method. The morphology and chemical composition of the as prepared nanoparticles were investigated by X-ray diffraction, high-resolution transmission electron microscopy (HRTEM). The Al-Si nanoparticles have a core shell structure with an Al2O3 shell around 5 nm. In the Al-Si nanoparticles there is no trace of metallic compounds, and in the carbon coated Al-Si nanoparticles, the only compounds is Al4C3.