화학공학소재연구정보센터
Materials Chemistry and Physics, Vol.71, No.3, 304-308, 2001
Microwave-hydrothermal synthesis of equi-axed and submicron-sized BaTiO3 powders
Microwave-hydrothermal (BT) route was used to synthesize BaTiO3 (BT) powders using barium nitrate, titanium tetrabutoxide and potassium hydroxide as starting materials. BT powders were synthesized in the present study by maintaining MH conditions at 200 degreesC, 200 psi and hold time approximate to 30 min using MARS-5 (CEM, USA) unit. Various physico-chen-deal techniques such as XRD, SEM were used to characterize the resulting BT powders. The characterization results revealed that cubic BT powders having equi-axed shape with agglomerate size approximate to0.2 mum were obtained using large excess concentration of barium reagent compared to titanium (Ba/Ti greater than or equal to 4) in solution.