Table of Contents
Indian Journal of Materials Science
Volume 2013 (2013), Article ID 251495, 7 pages
http://dx.doi.org/10.1155/2013/251495
Research Article

Growth of Hierarchically Structured High-Surface Area Alumina on FeCrAl Alloy Wires

1The University of Manchester, SCEAS, Manchester M13 9PL, UK
2Saudi Aramco, Research and Development Centre, Dhahran, Saudi Arabia

Received 20 August 2013; Accepted 28 October 2013

Academic Editors: A. Bhattacharyya and A. Facchetti

Copyright © 2013 Chandni Rallan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The formation of metastable alumina phases due to the oxidation of commercial FeCrAl alloy wires (0.5 mm thickness) at various temperatures and time periods has been examined. Samples were isothermally oxidised in air using a thermogravimetric analyzer (TGA). The morphology of the oxidised samples was analyzed using an Electronic Scanning Electron Microscope (ESEM) and X-ray on the surface analysis was done using an Energy Dispersive X-Ray (EDX) analyzer. The technique of X-Ray Diffraction (XRD) was used to characterize the phase of the oxide growth. The entire study showed that it was possible to grow high-surface area gamma alumina on the FeCrAl alloy wire surfaces when isothermally oxidised above 800°C over several hours.