3.2.4. Thermal analysis
As shown in TGA curve (Fig. 8), there is a mass loss of 1.2% in the sample when the temperature increases from room temperature to 450 C; the mass loss at this stage is attributed to desorption of water and other species absorbed on the SiC surface. The percentage of mass is constant from 450 C to 850 C, but the SiC mass starts to increase at 850 C due to oxidation of SiC. There is about a 0.2% mass increase from 850 C to 1000 C,