Combustion synthesis of TiB2-Al2O3-Al composite materialsThe oxide-aluminum exothermic reduction reaction is presently used in the combustion-synthesis of ceramic/metal composites. An excess of Al is used in the reacting materials, which rapidly generate enough heat to exceed Al's melting point. The molten Al thus evolved is allowed to infiltrate the porous ceramic matrix as the exothermic reaction proceeds; this feature of the process turns the disadvantage of high porosity levels in combustion-synthesized materials into an advantage. Attention is given to the system obtained with 3TiO2 + 3B2O3 + (10-x)Al starting materials.
Document ID
19920053767
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Feng, H. J. (NASA Lewis Research Center Cleveland, OH, United States)
Moore, J. J. (Colorado School of Mines Golden, United States)
Wirth, D. G. (Coors Ceramics Co. Golden, CO, United States)