SiC-MoSi2 Composites.

摘要

Previous studies have shown that SiC whisker-reinforced MoSi2 is an excellent candidate material for structural use at elevated temperatures. The yield strength at 1400C was doubled with the addition of Los Alamos VLS SiC whiskers, and increased by a factor of five with the addition of VS SiC whiskers, despite a non-optimal distribution of the reinforcement resulting from dry blending fabrication procedures. A more optimal wet processing technique, providing a much more uniform distribution of the whisker reinforcement will be discussed. Activities directed at alloying MoSi2 with other silicides to improve the mechanical properties of the matrix material will also be described. 6 refs., 5 figs., 1 tab.