Combustion synthesis of highly porous ceramics: The TiC-Al2O3 system

摘要

To make use of the porous nature of the SHSreaction products a novel investigation was made to manufacturethe highly porous ceramics with SHS method by adding certainamounts of volatile agents to the green compacts. Theinterconnected open porosity of the obtained highly porousceramics can be as high as 83% and the interconnected networkopen pore microstructure was developed in the obtained highlyporous ceramics. Large amounts of micropores were fund presentin the obtained highly porous ceramics, which is a special andimportant advantage of manufacturing porous ceramics with SHSmethod, Also this particular combustion process was studied indetail and it was found that the propagation rates are increasedconsiderably due to the unique green compact structure left by thevolatile agents.