Calculated C-MoSi2 and B-Mo5Si3 pseudo-binary phase diagrams for the use in advanced materials processing

The phase diagrams were calculated for the pseudo-binary systems, C-MoSi2, and B-Mo5Si3, in which the composites have significant potentials to functi on in high-temperature environments. The calculations have been executed wi th the aid of the software ChemSage and thermodynamic data derived based on the solution database of Scientific Group Thermodata Europe (SGTE). The co nstructed phase diagrams-are discussed with respect to some published exper imental information for the fabrication of molybdenum silicide materials an d provide a guideline for the experimental work of advanced materials proce ssing, such as second-phase reinforcement for MoSi2 and other low silicides in the Mo-Si system. (C) 2000 Elsevier Science S.A. All rights reserved.