Development of anodic and cathodic blisters at a model Zn/epoxy interface studied using local electrochemical impedance
TLDR
In this paper, local electrochemical impedance spectroscopy (LEIS) and mapping (LEIM) were used to in situ follow blistering on a model epoxy coated hot dip galvanized steel without any initial artificial defect during alternating Open Circuit Potential (OCP) / cathodic polarization cycles.About:
This article is published in Electrochemistry Communications.The article was published on 2020-02-01 and is currently open access. It has received 6 citations till now. The article focuses on the topics: Blisters & Cathodic protection.read more
Citations
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Electrochemical Impedance Measurements in Scanning Ion Conductance Microscopy
Viacheslav Shkirskiy,Minkyung Kang,Ian J. McPherson,Cameron Luke Bentley,Oluwasegun J. Wahab,Enrico Daviddi,Alex W. Colburn,Patrick R. Unwin +7 more
TL;DR: Comprehensive finite element method (FEM) modeling is undertaken to optimize experimental conditions and minimize experimental artifacts originating from the frequency dispersion phenomenon, and provides an avenue to explore means by which the spatial resolution could be further improved.
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Corrosion Inhibition at Scribed Locations in Coated AA2024-T3 by Cerium- and DMTD-Loaded Natural Silica Microparticles under Continuous Immersion and Wet/Dry Cyclic Exposure
TL;DR: Wet/dry cyclic exposure tests showed that cyclic conditions can increase the buildup of stable inhibitor-containing layers in the case of cerium-loaded silica microparticles, which underlines the need for more research using wet/dry exposure conditions.
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Detection and quantification of defect evolution at buried metal-oxide-polymer interface on rough substrate by local electrochemical impedance mapping
Thomas Sanchez,Ekaterina Kurchavova,Ekaterina Kurchavova,Viacheslav Shkirskiy,Jolanta Światowska,Vincent Vivier,Polina Volovitch +6 more
TL;DR: In this article, the role of local nanometric thinning in trivalent chromium conversion coating for the electrochemical stability of buried metal-oxide-model epoxy interface formed on a rough (arithmetic average roughness parameter Ra = 5 µm) electrodeposited substrate is presented.
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Enhanced anticorrosion performance of epoxy primer coating on zinc in 3.5% NaCl by micro and nano particulates of biopolymers
Mikitha Pais,Padmalatha Rao +1 more
TL;DR: In this paper , the performance of epoxy primer with micro and nano particulates of biopolymers has been investigated and the overall efficiency of the coating formulation was found to be 99.5%.
In-situ Visual Quantification of Corrosion and Corrosion Protection
TL;DR: In this paper, the authors explore the route towards new anticorrosion coatings for the protection of aerospace aluminium alloys using alternative strategies that can replace the currently used toxic chromate corrosion inhibitors.
References
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The Delamination of Polymeric Coatings from Steel. Part 1: Calibration of the Kelvinprobe and basic delamination mechanism
TL;DR: In this paper, it is shown that the electrochemical reactions taking place at the substrate/electrolyte and substrate/polymer interfaces are responsible for delamination of model coatings on steel.
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The delamination of polymeric coatings from steel. Part 2: First stage of delamination, effect of type and concentration of cations on delamination, chemical analysis of the interface
TL;DR: In this article, a simple, non-pigmented polymer was used for the verification of the model presented in Part 1 and several key experiments were conducted to verify the model.
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The mechanism for the cathodic delamination of organic coatings from a metal surface
TL;DR: In this article, a detailed mechanism of cathodic delamination from a defect in an organic coating is presented, which takes into account the reactants and how they get to the delaminating front.
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The delamination of polymeric coatings from electrogalvanised steel – A mechanistic approach. Part 1: delamination from a defect with intact zinc layer
Wolfram Fürbeth,Martin Stratmann +1 more
TL;DR: The basic mechanism of the cathodic delamination of polymer films from zinc-coated steel starting from a defect with an intact zinc layer has been derived in this paper, where the delamination is presented as the formation of a galvanic element between the active defect and the delaminated front with electrons and cations being transported to the local cathode.
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The delamination of polymeric coatings from steel Part 3: Effect of the oxygen partial pressure on the delamination reaction and current distribution at the metal/polymer interface
TL;DR: In this paper, it is shown that oxygen reduction plays a central role in the delamination process and the reaction rate of the oxygen reduction for the simple non-pigmented polymer under investigation is determined by the ohmic potential drop between the defect and the delamination frontier.