By taking 3TiO2 + 3C + （4+x）Al as a reaction system

a dense TiC-Al2O3-Al composite was directly fabricated by an electric field inducing combustion synthesis process and the molten Al formed during the process penetrating into the synthesized products.Effect of different electric field application methods and field strength on microstructures of the combustion synthesized composite was investigated.The results show that the imposition an external electric field application method plays a significant role in influencing microstructures of the products.In addition

with increasing of field strength the grain size of Al2O3 and TiC particles decrease gradually and the density of the composites are improved.In case of x=14 mol

with E=25 V/cm applied at the start of the reaction and stopped at the finish of the combustion reaction

a dense TiC-Al2O3-Al composite has been successfully fabricated

in which TiC and Al2O3 particles are fine and uniformly distribute in metal Al.As a result

the composites have obvious features of tough fracture.