Heats of reaction in the formation of TIB < inf> 2 reinforced titanium aluminide composites

Document Type

Conference Proceeding

Publication Date



Experimental heats of reaction for the formation of several Al 3Ti + TiB2 intermetallic composite formulations have been determined utilizing bomb calorimetry. To overcome the kinetic constraints and achieve ignition in these formulations, a boron (B)/potassium nitrate (KNO 3) initiation aid was incorporated within the blended reactant compact. The heat contribution from the initiation aid was regressed to provide estimates of the heat of reaction of the nominal formulations. Powder x-ray diffraction was utilized to identify the products of the reaction and discern any differences between the predicted equilibrium products of the formulation and the actual products.

Publication Title

TMS Annual Meeting