Corrosion Behavior of Mg-Al/TiC Composites in NaCl Solution

International Journal of Corrosion - Tập 2011 - Trang 1-7 - 2011
L. Falcón-Franco1, E. Bedolla B.1, J. Lemus-Ruíz1, C.A. León‐Patiño1, I. Rosales2, J.G. González-Rodrı́guez2
1Instituto de Investigaciones Metalurgicas, Universidad Michoacana de San Nicolás de Hidalgo, 58060 Morelia, MICH, Mexico
2CIICAp, Universidad Autonoma del Estado de Morelos, Avenue Universidad 1001, 62209 Cuernevaca, MOR, Mexico

Tóm tắt

The corrosion behavior of TiC particles reinforced Mg-Al alloy in 3.5% NaCl solution has been evaluated using electrochemical techniques. Tested alloys included an Mg-9Al (Mg AZ91E) alloy with and without 56 wt. % TiC particles. Electrochemical techniques included potentiodynamic polarization curves, linear polarization resistance, electrochemical noise, and electrochemical impedance spectroscopy measurements. All techniques showed that the composite exhibited a lower corrosion rate than the base alloy. Evidence of galvanic effects that increased the composite corrosion rate was found between the matrix and the TiC particles. Additionally, the tendency to suffer from pitting corrosion was higher for the base alloy than that for the composite. Electrochemical impedance results showed the importance of adsorption/diffusion phenomena in both materials.

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Tài liệu tham khảo

10.1023/A:1016523408906

10.1016/S1359-6462(03)00137-4

1992, Materials Science and Technology, 8, 971, 10.1179/mst.1992.8.11.971

10.1088/0953-8984/16/22/025

10.1016/j.corsci.2009.03.025

10.1016/j.matlet.2004.04.009

10.1016/j.matlet.2004.06.053

2002, Materials and Design, 23, 173, 10.1016/S0261-3069(01)00066-8

1997, Corrosion Science, 39, 1075, 10.1016/S0010-938X(97)00008-5

10.1016/S0010-938X(98)00179-6

10.1016/j.corsci.2007.11.005

1995, Corrosion Science, 37, 689, 10.1016/0010-938X(95)80003-4

2005, Materials Science Forum, 488-489, 705, 10.4028/www.scientific.net/MSF.488-489.705

10.1016/j.corsci.2006.05.047

10.1016/j.corsci.2008.06.043

1996, Corrosion, 52, 708, 10.5006/1.3292161

10.1007/BF00545474

1998, Corrosion, 54, 499, 10.5006/1.3284877

10.1007/BF00549882

1996, Materials Science Forum, 217–222, 1571

1996, Metallurgical and Materials Transactions A, 27a, 2653

1970, Bulletin of Electrochemistry, 13, 107

1996, Materials Science Forum, 217–222, 1593

1991, Corrosion, 47, 741

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International Journal of Corrosion

Tập 2011

1-7

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