Mo/Mo silicide composites prepared by pressure-assisted reactive infiltration

Abstract

Pressure-assisted reactive infiltration of Mo wire preforms with molten silicon was tested in order to prepare compact and void-free Mo/Mo silicide composite. It appears that when Mo silicides were formed in a stressed condition, the porosity and extensive cracking could be suppressed. Relatively compact samples were prepared. The cumulative failure mode was recorded during bending tests, and the excellent oxidation resistance had been confirmed by TG measurements.