Abstract
The powders were prepared from mixed alkoxide solutions of Al and Ti to investigate A12TiO5 formation reaction and sinterability of resultant powders. HCI-catalyzed hydrolysis of metal alkoxides enhanced the agglomeration of the resulting powders and the formation of anatase at low temperature. However, the conversion of A12TiO5 in a sintered body was almost independent upon the hydrolysis conditions, since A12TiO5 was formed through the solid-solid reaction of rutile and corundum. A uniform addition of Mg into the A12TiO5 through solgel technique made it possible to reduce the crack size of sintered body due to a homogeneous nucleation. Average thermal expansion coefficients, bulk density and flexural strengths of sintered bodies had maximum values in a certain amount of MgTi2O5 addition.
