Preparation of β-SiC Nanometersized Powder by Sol-Gel Process

It was reported that monodispersed spherical β- SiC nanostructured powder was synthesized by a sol- gel process derived from the hydrolysis of a mixture of two organisms in this paper. The gel powder became monodispersed spherical β-SiC nanostruc tured powder by heat- treating at 900~ 1300℃ in Ar atmosphere. The sizes of β-SiC powder of high purity and low oxygen were about 10nm~l. spin at different heat treatment temperatures. The content of the β-SiC was 99. 92 %. The morphology and structure and grain size were systematically studied by XRD,TEM and Raman spectroscopy. Finally, the process of the growth mechanism of the β- SiC nanostructured Powder at different temperatures was discussed.