Transactions of the INDIAN CERAMIC SOCIETY Vol. 54 1995
Sol-Gel Concepts as Applied to Alumina Ceramics
K. G. K. W ARRIER
Pages : 144-148
DOI : 10.1080/0371750X.1995.10804707
Abstract
Alumina has been recognised as one of the most important
high temperature ceramic materials; as its application has
expanded the scope, a variety of preparative processes have
also emerged. For example, sol-gel based synthesis
techniques have been applied with a variety of modifications.
The monohydroxy aluminium oxide (boehmite) is
the precursor in most of the synthesis techniques. Keeping
boehmite sol as the starting material, ceramic materials
such as alumina, aluminium titanate and alumina-titania
high surface area particulates have been prepared at low
processing temperatures, and are reported here.
Details regarding the in-depth problems with respect to
the understanding of structure-property relations in
boehmite are presented. Further, the details of synthesis of
some high temperature alumina ceramics are discussed.
The importance of hydrolysis procedure and calcination
conditions in the control of the end properties is
highlighted.
