Print Email Facebook Twitter An integral non-intrusive electrochemical and in-situ optical technique for the study of the effectiveness of corrosion inhibition Title An integral non-intrusive electrochemical and in-situ optical technique for the study of the effectiveness of corrosion inhibition Author Homborg, A.M. (TU Delft Team Arjan Mol; Netherlands Defence Academy) Olgiati, M. (TU Delft Novel Aerospace Materials) Denissen, P.J. (TU Delft Novel Aerospace Materials) Garcia, Santiago J. (TU Delft Novel Aerospace Materials) Date 2022 Abstract This work investigates an integrated analysis of in-situ optical data and time-frequency information from electrochemical potential noise (EPN) data to study the effectiveness and durability of an anodic and cathodic corrosion inhibitor. Two different corrosion inhibiting species, cerium(III) (Ce(III)) and phytic acid (PHA), are tested on aluminum alloy AA2024-T3. Corrosion of AA2024-T3 serves as a negative reference. Time-frequency analysis of EPN data provides a direct insight in the kinetics of the electrochemical processes related to different types of corrosion and/or inhibitor activity over time. The simultaneous, in-situ optical technique allows visualizing and quantifying the surface changes associated with the electrochemical signals. Both Ce(III) and PHA were not capable to inhibit corrosion to a large extent, as re-immersion led to electrochemical (corrosion) activity for both inhibitors. Time-variant changes between corrosion, inhibitor activity, inhibited state and re-activation can effectively be discriminated from each other. Subject Combined electrochemical-optical analysisCorrosion inhibitionElectrochemical noiseIn-situ opticsTime-frequency analysis To reference this document use: http://resolver.tudelft.nl/uuid:d81b94ef-f998-4303-9a26-f3d11bfee5b0 DOI https://doi.org/10.1016/j.electacta.2021.139619 Embargo date 2023-07-01 ISSN 0013-4686 Source Electrochimica Acta, 403 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2022 A.M. Homborg, M. Olgiati, P.J. Denissen, Santiago J. Garcia Files PDF 1_s2.0_S0013468621019034_main.pdf 6.23 MB Close viewer /islandora/object/uuid:d81b94ef-f998-4303-9a26-f3d11bfee5b0/datastream/OBJ/view