Effects of the amounts of Fe catalyst on stacking faults and morphologies of β-SiC

Irregular β-SiC particles were prepared by a sol-gel and carbothermal reduction route,in which(tetraethoxysilane) and phenolic resin were employed to prepare carbonaceous silicon xerogels,the precursor of the SiC.The samples were characterized by XRD,FTIR,SEM and BET.Results indicated that β-SiC was not produced in the solgel process in the absence of Fe-catalyst and the existence of Fe enhanced the formation of(β-SiC).With an increase in the amount of Fe catalyst,the average crystallite size of the SiC particles increased,whereas the stacking fault density and the surface area decreased.