Thermal treatment is unfit for preparing high solid loading SiC suspensions because the increase of unformed SiO2 on SiC surface leads to coagulation of particles.

• 通过高温加热处理使粉体表面无定型SiO2含量大大增加，使用这种粉体制得的料浆易产生团聚，不利于颗粒的悬浮；