Solidification Sequences In The Ternary Fe-V-Nb System

Abstract

The present work is a continuation of research on alloys based on iron, with the aim to understanding the solidification behaviour of Fe-V-Nb alloys. Solidification sequences are proposed in relation to the observed microstructures for Fe-V-Nb synthesis alloys. Fe-V-Nb binary alloys with different concentrations are arc melted and characterized systematically by means of differential thermal analysis, optical and scanning electron microscopy coupled to an energy dispersive X-Ray microprobe analysis, quantitative XRF spectrometry and X-Ray diffraction. In the present work, the thermal and microsructural behavior of Fe-V -Nb alloys with different concentrations have been studied with the aim of answering some questions and especially paying attention to the microstructures and temperature transition. Two primary surfaces are identified: (Fe) and Fe 2 Nb. Moreover, one invariant line is also identified as a binary eutectic reaction (L   + Fe 2 Nb), which is clearly shown according to the observed microstructure. In perspective, other shades of this ternary alloy will be studied for a path projection of liquidus surface.

Monitoring of 2-butanone using a Ag–Cu bimetallic alloy nanoscale electrochemical sensor

“…Some intermetallic compounds having complex and stiff structures provide useful guidelines for the development of new material systems. 1 Among such new material systems, bimetallic alloys of Ag and Cu are of utmost technological importance. The electronic conduction of Cu is signicantly affected on coupling with Ag.…”