Characterization of the Corrosion Behavior of Hot Pressed Nanocomposites Al-SiC Powder

Abstract:

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The object of the present work is the characterization of the corrosion behavior of Al-5%SiC nanocomposites prepared by mechanical alloying and the hot pressing method. Al/SiC metal matrix composite (MMCp) powder with volume fraction of 5% SiC was synthesized by high-energy milling of the blended micro component powder. The mechanically mixed nanocomposite powder was consolidated into bulk compacts using hot pressing at 1 GPa pressure for thirty seconds at three different temperatures of 440, 480 and 520°C. The microstructure was investigated by Secondary electron microscopy (SEM) and X-ray diffraction (XRD) analyses. The corrosion behavior of the coating was evaluated using electrochemical techniques such as potansiodynamic polarization and EIS. It was found that the corrosion resistance of Al-5%SiC nanocomposite when hot pressed at 480°C, in 3.5% NaCl solution was higher than pure Al and Al-SiC nanocomposite that had been hot pressed at other temperatures.

Info:

Periodical:

Advanced Materials Research (Volumes 83-86)

Edited by:

M. S. J. Hashmi, B. S. Yilbas and S. Naher

Pages:

429-438

DOI:

10.4028/www.scientific.net/AMR.83-86.429

Citation:

T. Rostamzadeh et al., "Characterization of the Corrosion Behavior of Hot Pressed Nanocomposites Al-SiC Powder", Advanced Materials Research, Vols. 83-86, pp. 429-438, 2010

Online since:

December 2009

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Price:

$35.00

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