Morphology of alumina particles synthesized by sol-gel method and irradiated with high-energy electrons
The morphology of aluminum oxide synthesized by sol-gel method and irradiated by high-energy electrons was investigated. Aluminum foils were dissolved in hydrochloric acid to obtain aluminum chloride which was converted to aluminum hydroxide by the addition of baking soda. The resultant powder was dried at 200°C for 4 hrs, calcined at 500°C for 2 hrs, pelletized, sintered at 1100°C for 1.5 hrs, and irradiated by high-energy electrons for an absorbed dose of 50 kGy. The results of XRD showed that γ-alumina particles were synthesized. SEM images show irregular and flake-like grains for the non-irradiated pellet, and larger rounded grains for the irradiated one.