Synthesis of hollow SiC microglobules by a combustion method

Hollow β-SiC microglobules have been synthesized successfully by a combustion technique by using a Si + C starting mixture. In this process, a controlled amount of KClO3 + 3Mg is mixed with Si + C to enable a self-sustaining combustion regime and to promote a carburization of the silicon. The structures and morphologies of the products were analyzed by X-ray diffractometry (XRD) and a scanning electron microscopy (SEM). This procedure provides an easy method for the synthesis of hollow microglobular assemblies with SiC composed of submicrometer size particles.