Exfoliation Corrosion Behavior of 2524 Aluminum Alloy

Sheng Yang; Dan Qing Yi; Su Juan Yao; Ya Ping Hou

doi:10.4028/www.scientific.net/MSF.546-549.1159

Paper Titles

Effects of HTCA on Microstructure and Surface Morphology of Porous Anodic Alumina Membrane
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Structure and Properties of Microarc Oxidation Films on Zinc-Containing Aluminum Alloy
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Anti-Oxidation and Anti-Corrosion Properties of Al-Si Metal Anodes
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Corrosion Behavior Improvements of High Active Aluminum Alloy Anode in Alkaline Solution by Adding Inhibitors
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Exfoliation Corrosion Behavior of 2524 Aluminum Alloy
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Liquation Cracking in Heat Affected Zone in Ni Superalloy Welds
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The Future of Commercial Air Transport and Aeroengines: Challenges and Opportunities
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French Research and Development Activities on High-Performance Superalloys for Gas Turbine Components
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Atomic Partitioning of Platinum and Ruthenium in Advanced Single Crystal Ni-Based Superalloys
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Exfoliation Corrosion Behavior of 2524 Aluminum Alloy

Abstract:

The exfoliation corrosion behavior of 2524 aluminum alloy was studied by Transmission Electron Microscope (TEM), hydrogen evolution and Electrochemical impedance spectroscopy (EIS) . The results showed that 2524 aluminum alloy was very susceptible to exfoliation corrosion and the exfoliation corrosion appeared after 24 h. EIS could better explain the exfoliation corrosion than hydrogen evolution. Exfoliation corrosion kinetics included accelerated formation of pitting, quick development of pitting, retarded formation of exfoliation and steady development of exfoliation.