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http://dx.doi.org/10.14773/cst.2012.11.4.108

Corrosion Behavior of Silicon Carbide/7091 Aluminum Matrix Composites  

Kang, Wooseung (Dept. of Metallurgical & Materials Engineering, Inha Technical College)
Publication Information
Corrosion Science and Technology / v.11, no.4, 2012 , pp. 108-111 More about this Journal
Abstract
The effects of volume fraction (15-30%) of SiC particulate reinforcements on the corrosion behavior of SiCp/7091 Al composites in the 3.5% NaCl solution were studied by electrochemical techniques and scanning electron microscopy. The results showed that the amount of SiC particulate reinforcements did not cause much difference in the corrosion behavior of SiCp/7091 Al composites but the corrosion rate was proportional to the amount of SiCp reinforcement. And numerous pits and severe dissolution of the matrix was observed probably due to the discontinuities and galvanic effects between Al matrix and SiC reinforcements.
Keywords
composites; reinforcements; corrosion potential; polarization resistance; pitting;
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