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Metals 2015, 5(4), 1799-1811;

Corrosion Properties in Sodium Chloride Solutions of Al–TiC Composites in situ Synthesized by HFIHF

Center of Excellence for Research in Engineering Materials (CEREM), Advanced Manufacturing Institute, King Saud University, P.O. Box 800, Al-Riyadh 11421, Saudi Arabia
Electrochemistry and Corrosion Laboratory, Department of Physical Chemistry, National Research Centre (NRC), Dokki, Cairo 12622, Egypt
Mechanical Design and Materials Department, Faculty of Energy Engineering, Aswan University, Aswan 81521, Egypt
Department of Mechanical Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia
Author to whom correspondence should be addressed.
Academic Editor: Hugo F. Lopez
Received: 6 September 2015 / Revised: 19 September 2015 / Accepted: 28 September 2015 / Published: 8 October 2015
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Al–TiC nanocomposite materials have been prepared by a new in situ synthesizing technique. A mixture of aluminum, titanium, and graphite has been prepared using ball milling technique and then melted in a high frequency induction heat furnace (HFIHF) at different sintering temperatures, namely 900, 1100, and 1300 °C. The effect of sintering temperature on the corrosion of the Al–TiC composite in 3.5% NaCl solutions was investigated using cyclic potentiodynamic polarization, chronoamperometric current-time, open-circuit potential, and electrochemical impedance spectroscopy measurements. The surface of the composites after their corrosion in the test solution was investigated using scanning electron microscopy and energy dispersive X-ray analyses. It has been found that all manufactured composites suffer uniform corrosion. All corrosion test techniques were consistent with each other and confirmed clearly that the corrosion resistance of Al composites increased according to their sintering temperature in the following order 900 > 1100 > 1300 °C. View Full-Text
Keywords: Al composites; corrosion; mechanical alloying; polarization; sintering temperature Al composites; corrosion; mechanical alloying; polarization; sintering temperature

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Sherif, E.-S.M.; Abdo, H.S.; Khalil, K.A.; Nabawy, A.M. Corrosion Properties in Sodium Chloride Solutions of Al–TiC Composites in situ Synthesized by HFIHF. Metals 2015, 5, 1799-1811.

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