Structural characterization of the Ta5Si3 and Cr5Si3 phases

Abstract

In recent studies, much research is focused on the silicides alloys based in refractory transitions metal, becoming these materials as potential candidate for structural applications in high-temperatures for the fact of them possess excellent balance of properties, of is extreme importance for aeronautical and aerospace industries. This work presents results of microstructural characterization of the Ta5Si3 and Cr5Si3 important phases. These silicides were obtained by arc melting under argon atmosphere. Analyzes generated by X-ray Diffraction (XRD) and Scanning Electron Microscope (SEM) were used to obtain information about chemical and crystallographic characteristics of the samples generated before and after the heat-treatment