Volume 12, Number 2 (June 2015)                   IJMSE 2015, 12(2): 10-17 | Back to browse issues page

DOI: 10.22068/ijmse.12.2.10

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Fattah-Alhosseini A, Ranjbaran M, Vajdi Vahid S. AN INVESTIGATION ON CORROSION BEHAVIOUR OF A356-10 VOL.% SiC COMPOSITES IN HCl SOLUTIONS. IJMSE. 2015; 12 (2) :10-17
URL: http://ijmse.iust.ac.ir/article-1-798-en.html

Abstract:   (1484 Views)
In this study, corrosion behaviour of A356-10 vol.% SiC composites casted by gravity and squeeze casting is evaluated. For this purpose, prepared samples were immersed in HCl solution for 1h at open circuit potential. Tafel polarization and electrochemical impedance spectroscopy (EIS) were carried out to study the corrosion resistance of composites. The Tafel polarization and EIS studies of the corrosion behaviour of the A356-10 vol.% SiC composites showed that the corrosion resistance of the composite casted by squeeze casting was higher than that of the composites casted by gravity in selected corrosion media. Also, the Tafel polarization and EIS studies revealed that the corrosion current densities of both composites increase with the increase in the concentration of HCl. The micrographs of scanning electron microscope (SEM) clearly showed the squeeze casting composite exhibits a good dispersion/matrix interface compared to that of the composites produced by gravity casting
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Type of Study: Research paper |

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