Corrosion Behavior of in-Situ AlB2/Al-Cu Metal Matrix Composite

H. Elciceka, Ö. Savaşa, Z. Aydina, O.K. Özdemirb and R. Kayikcic aYildiz Technical University, Faculty of Naval Architecture and Maritime, 34349 Istanbul, Turkey bYildiz Technical University, Department of Metallurgical and Material Engineering, 34220 Istanbul, Turkey cSakarya University, Department of Metallurgical and Materials Engineering, 54187 Sakarya, Turkey

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The aim of this study was to fabricate 30 wt.% AlB2/Al-Cu composites using in-situ casting processes and to investigate the corrosion behavior of the composites and of the matrix material in various media. The electrochemical parameters were obtained from potentiodynamic polarization curves. The composites were prepared by liquid reaction of aluminum matrix with boron oxide at 1400°C. The results show that the corrosion resistance of the composite was higher than that of the matrix in selected corrosion media. The anodic corrosion current density values were decreased by reinforcing AlB2 particles.

DOI: 10.12693/APhysPolA.129.661 PACS numbers: 81.05.Bx