Keywords: carbides, natural silica, rice husk, silica, synthesis, silicon carbide
Synthesis of silicon carbide from rice husk
Mexican rice hulls were pyrolysed in an inert atmosphere to form silicon carbide. The first step was a preheating process; the next step was the synthesis of silicon carbide, by using an extremely simple system of heating. Scanning electron microscopy, X-ray diffraction and differential thermal analysis were used to characterize the product. The type of SiC obtained was the so-called b-silicon carbide, in the form of fibres.