AMPP Store - Products tagged with 'electrochemical impedance spectroscopy'

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Laboratory Investigation Of Coating Impedance In Controlled Environments Using A Two-Cell Field Test Method

Product Number: 51323-19155-SG

Author: Bobbi Jo Merten, Meredith Heilig, Matt Jermyn

Publication Date: 2023

$20.00

The recent development of ASTM D8370-22 provides a field-applicable technique for measuring impedance on protective coatings. The test method expands the use of electrochemical impedance spectroscopy (EIS) beyond the laboratory and standardizes the approach for various applications to polymeric coatings on conductive substrates, e.g., barrier coatings on steel structures. Example applications include condition assessments and quality control testing.

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Microstructural And Transport Properties Changes In Blended Cement Concrete Resulting From DC Treatments

Product Number: 51323-19124-SG

Author: Milan Kouril, Vojtech Hybasek, Matej Reiser, Sarka Msallamova, Ivona Sedlarova, Jiri Nemecek

Publication Date: 2023

$20.00

The direct current electrical treatments are applied with the aim of improving corrosion resistance of steel embedded in concrete. It is the impressed current cathodic protection in both widely used modes – preventive or remedial, electrochemical chloride extraction, realkalization of carbonated concrete and electrochemical injection of protective agents. All the treatments are similar to each other in its principle and arrangement.

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Modified magnetite surface layers on carbon steel in aqueous CO2 environments

Product Number: 51323-19127-SG

Author: Joshua Owen, Richard Barker, Francois Ropital, Gaurav R. Joshi, Jean Kittel, Robert Jacklin, Danny Burkle, Erlend Straume, Sigrún Nanna Karlsdóttir

Publication Date: 2023

$20.00

Surface layers often form on carbon steel surfaces in carbon dioxide (CO2) saturated environments and under certain conditions can offer corrosion protection to the underlying steel. One such layer, magnetite (Fe3O4) is a semiconductor, having a reported electrical resistivity of the order of 10-2 to 10-1 Ω∙cm and band gap of 0.1 eV. The conductive properties of Fe3O4 are of significant importance when understanding the corrosion behaviour of carbon steel, as Fe3O4 can readily establish a galvanic couple with the steel surface upon which it has formed.

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Multiplexed Sensor Array for Accurate Time-of-Wetness (TOW) Measurement

Product Number: 51317--9370-SG

ISBN: 9370 2017 CP

Author: Nathaniel Sutton

Publication Date: 2017

$20.00

In this work, we use electrochemical impedance spectroscopy (EIS) to observe the response of a single interdigital transducer (IDT) sensor to different wetting conditions, including electrolyte volumes and concentrations. Deliquescence of solid salt particles in a dynamic-humidity atmosphere is examined.

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Preliminary Study to Characterize Concrete Durability by Water Permeation and Electrochemical Impedance Spectroscopy

Product Number: 51324-21167-SG

Author: Kingsley Lau; Amer Awwad; Samanbar Permeh; Atorod Azizinamini

Publication Date: 2024

$40.00

Sustainability of civil infrastructure construction can in part be attained by better testing to identify important material characteristics that affect durability. The quality of the concrete in reinforced concrete structures is a primary factor that enhances corrosion durability of reinforced concrete structures. The concrete may be assessed for quality control using methods such as bulk ion diffusivity tests, accelerated electrical migration tests, and electrical resistivity. There is interest in non-destructive in-situ testing for assessment of structures in service. In this study, preliminary tests were conducted to characterize the durability of concrete using a water permeation test, acoustic testing, as well as electrochemical impedance spectroscopy. Test results showed that the electrical properties of the hardened concrete can be assessed by electrochemical impedance spectroscopy where a high frequency impedance loop (relating to the bulk material and internal moisture content) can be discerned. The concretes with lower water-to-cement ratio and larger coarse aggregates showed larger resonant frequency values that can be attributed to greater developed stiffness. A water permeation test was also demonstrated to differentiate internal moisture conditions, and its results (described by a decay factor derived from mass and energy balance) was well correlated to its concrete electrical parameters.

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Surface treated metallic bipolar plates as an alternative to platinized titanium

Product Number: 51323-19247-SG

Author: Jakub Ludvík, Richard Bureš, Milan Kouřil, Hala Miroslav, Fojt Jaroslav, Michalcová Alena, Iryna Danylo

Publication Date: 2023

$20.00

Organic coatings protect the underlying metallic substrate against corrosion by acting as a barrier to corrosive species such as water, ions, and oxygen. Unfortunately, coatings might contain defects and could degrade or disbond under some environmental conditions, resulting in favorable pathways for such corrosive species.

Barrier protection is one of the modes by which intact coatings provide protection to metal substrates through a reduction of the transport of materials, ions, or charge.

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The Effect of CO2 Partial Pressure on the Formation and Protective Characteristics of Iron Carbonate Corrosion Products

Product Number: 51324-20666-SG

Author: Amber Sykes; Robert Jacklin; Danny Burkle; Richard C. Woollam; Joshua Owen

Publication Date: 2024

$40.00

This study investigates the effect of carbon dioxide (CO2) partial pressure on the rate of formation and the protective characteristics of iron carbonate (FeCO3) corrosion product layers on X65 carbon steel in aqueous systems. Autoclave corrosion tests were performed at 80 °C in CO2-saturated 3 wt.% sodium chloride solution at partial pressures from 5.5 to 15.5 bar. Linear polarization resistance and electrochemical impedance spectroscopy electrochemical methods were utilized to provide insight into the stages of corrosion product layer development. Analysis of the electrochemical response under each condition revealed key, distinguishable stages associated with the development of an FeCO3 layer as its role transitions from predominantly blocking steel active sites, to ultimately providing additional corrosion suppression through formation of a diffusion barrier. It was found that at higher CO2 partial pressures, the onset of diffusion control was accelerated, but the overall corrosion rate was greater than at lower pressures.

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The Most Recent Test Results of One-Coat Systems Applicable to Steel Bridge Structures

Product Number: 41209-492-SG

Author: Seung-Kyoung Lee, Yuan Yao, Shuang-Ling Chong

Publication Date: 2009

$20.00

A two-year Federal Highway Administration (FHWA) in-house study was launched in November 2006 to evaluate various coating materials that may be applied as one-coat systems to steel bridges. A total of eight test materials plus two control systems, a 3-coat and a 2-coat, were applied over near-white steel test panels (SSPC-SP10). Their performance has been evaluated for 20 months using electrochemical impedance spectroscopy, surface failure characterizations, rust creepage at scribe, pull-off adhesion, and changes of color and gloss.

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Understanding Carbon Steel Corrosion and Inhibition in Deep Pit-Like Features Under Thick Deposit Layers

Product Number: 51323-19284-SG

Author: Raeesa Bhamji, Frederick Pessu, Joshua Owen, Richard Barker

Publication Date: 2023

$20.00

Corrosion of carbon steel is the most prominent reason for pipeline failure in a range of industries, from oil and gas transportation to water treatment facilities and nuclear waste storage. Under-deposit corrosion occurs in low fluid flow rate environments, when particulate matter (such as sand and clay) settles on the bottom of transportation pipelines. The presence of deposits results in a diffusion barrier, which significantly alters interfacial solution chemistry compared with that of the bulk.

Products tagged with 'electrochemical impedance spectroscopy'

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