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Motta, Antonella |
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- 2024Eco‐Friendly Approach to Ultra‐Thin Metal Oxides‐ Solution Sheared Aluminum Oxide for Half‐Volt Operation of Organic Field‐Effect Transistorscitations
- 2020Surface and corrosion properties of AA6063-T5 aluminum alloy in molybdate-containing sodium chloride solutionscitations
- 2019Narrow optical gap ferroelectric Bi2ZnTiO6 thin films deposited by RF sputteringcitations
- 2019Influence of the La3+, Eu3+, and Er3+ Doping on Structural, Optical, and Electrical Properties of BiFeO3 Nanoparticles Synthesized by Microwave-Assisted Solution Combustion Methodcitations
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article
Surface and corrosion properties of AA6063-T5 aluminum alloy in molybdate-containing sodium chloride solutions
Abstract
<p>Corrosion properties of aluminum alloy AA6063-T5 were investigated in molybdate-containing NaCl solutions. Electrochemical, microscopic, and spectroscopic experiments were utilized to examine the mechanism of corrosion inhibition by molybdates. SEM-EDX, magnetic force, and intermodulation electrostatic force microscopy data suggested that the inhibition initiation preferentially occurred over Fe-rich cathodic IMPs. Spectroscopic measurements demonstrated that the formed surface layer consists of mixed Mo(VI, V, IV) species. This layer provided inhibition with an efficiency of ∼90% after 4 h of exposure. High efficacy of ∼70% was achieved even after one week of exposure. A two-step oxidation-reduction mechanism of corrosion inhibition by aqueous molybdates was proposed.</p>