Formation and Decomposition of Sol-Gel Synthesized AluminumTitanate Nano Powders at the Presence of Fe_2O_3 Additive

摘要

Full formation of aluminum titanate compound at low temperatures was obtained by sol-gel method. With addition of various amount of Fe_2O_3 additive to tialite composition formation and decomposition of tialite phase have been investigated. X-ray diffraction (XRD), simultaneous thermal analysis (STA) and scanning electron microscopy (SEM) analysis showed that the formation of nano tialite at low temperatures (around 950℃) was improved at the presence of additive and decomposition rate of aluminum titanate to α-Al_2O_3 and TiO_2 (Rutile) in sample with 5%wt Fe_2O_3 was controlled with formation of Al_2TiO_5-Fe_2TiO_5 solid solution.