Mechanoactivated SHS of Si–SiC Powders from Natural Sand: Influence of Milling Time

详细

Si–SiC composite powders were SHS-produced from milled ‘natural sand–C–Mg’ precursors under pressure of Ar gas; and the effect of milling time τ on the morphology and phase composition of combustion product was investigated. The reduction in particle size of sand with increasing τ was extremely significant for the formation of Si–SiC composite powders due to an increase in the surface area of contact. Smaller sand particles yielded finer Si–SiC powders.