Table of Contents
Journal of Metallurgy
Volume 2012 (2012), Article ID 258021, 4 pages
http://dx.doi.org/10.1155/2012/258021
Research Article

The Corrosion Behavior of Carburized Aluminum Using DC Plasma

Applied Plasma Physics Lab., Plasma Physics & Nuclear Fusion Research School, Nuclear Science & Technology Research Institute, Tehran 14399-51113, Iran

Received 17 August 2011; Revised 3 November 2011; Accepted 20 December 2011

Academic Editor: Ludo Froyen

Copyright © 2012 Somayeh Pirizadhejrandoost 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

Because of the outstanding properties of aluminum, it is widely used in today's advanced technological world. However, its insufficient wear resistance limits its use for commercial and industrial applications. In this study, we performed DC diode plasma carburizing of aluminum in the gas composition of CH4–H2 (20–80%) and at a temperature of about 350°C for 4 and 8 hours. The corrosion properties of the untreated and plasma-carburized samples were evaluated using anodic polarization tests in 3 N HCl solution according to ASTM: G5-94. The metallurgical characteristics were then investigated using XRD and SEM. The results showed that the carburizing process improves the corrosion resistance of treated specimens at low temperature.