Transactions of the INDIAN CERAMIC SOCIETY Vol. 62 2003
Reaction-Induced Processing of Al2O3-Based Interpenetrating Phase Composites
Sujit K.Roy
Pages : 1-17
DOI :10.1080/0371750X.2003.11012062
Abstract
Interpenetrating network (IPN) composites containing Al2O3 and Al phases constitute a novel class of materials that exhibit connectivity of both the phases in all directions and as a result, possess interesting properties which can be designed to suit specific applications. Reaction-induced methods of fabrication of such materials are considered economical and provide opportunity for optimizing phase contents. Four different methods of synthesizing Al2O3/Al-IPNs using exothermic reactions are reviewed. The important aspects of thermodynamics of exothermic systems, wetting phenomenon in solid-liquid contacts and control of porosity in solid-gas reaction are discussed. Some data on properties are collected from available literature and on the basis of these values, a few applications are indicated.
