Abstract
This chapter describes the main research performed in corrosion of composites using TiC and SiC like reinforcement and Al, Ni, and some Al-Cux, Al-Mgx, and Al-Cu-Li alloys like matrix. The corrosion behavior of MMC is of great importance to predict its behavior in corrosive environments that can be exposed during service. The corrosion resistance of commercial aluminum alloy (2024) and binary Al-Cux and Al-Mgx alloys reinforced with TiC particles using a pressureless infiltration method has been evaluated in 3.5% NaCl solution. In addition, the corrosion behavior of some heat-treated composites, either artificially or naturally, was analyzed. Additionally, electrochemical study of nickel and Ni/TiC composite immersed in synthetic seawater was carried out. Effect of TiC as reinforcement into the Ni matrix was evaluated. The mechanism of corrosion was cells of differential aeration (pits and crevice). Finally, the corrosion behavior of Al-Cu-Li/SiC and Al-Cu/SiC composites in NaCl solutions with different pH values was studied. The addition of lithium and copper on the corrosion behavior of the composites was evaluated.
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