AMPP Store - Products tagged with 'electrochemical impedance spectroscopy (eis)'

Available for download

Evaluation and Prediction of Protective Performance for Epoxy Systems and Epoxy/Polyurethane Systems in Wet and Dry Environments

Product Number: 41206-258-SG

Author: Chul-Hwan Lee, Chil-Seok Shin, Kwang-Ki Baek

Publication Date: 2006

$20.00

Current coating practice requires the thickness of anti-corrosion organic coatings to be over 250 for immersion parts of ships and offshore structures and the protective performance of these coatings has been evaluated by destructive and qualitative analysis. Recently, Electrochemical Impedance Spectroscopy (EIS) method has been employed, as an alternative, to evaluate corrosion resistance of organic coatings. This method is characterized as being nondestructive, reproducible, and quantitative in evaluating aging of organic coatings.

Available for download

Formulators in the Field: The Effect of Over-Cure or Under-Cure of Polyclamine Cured Epoxy Linings

Product Number: 41216-993-SG

Author: Mike O’Donoghue, Vijay Datta, Travis Gafka

Publication Date: 2016

$20.00

Advanced technology high performance tank linings are often applied by plural spray equipment and occasionally one of the components could be off ratio. Worse still, some well-intentioned field personnel might add more curing agent to speed up the cure, or alter other properties, or may not utilize the entire curing agent portion in a single leg application. This paper investigates the effects of under-cure or over-cure on the performance of two high temperature tank linings by deliberately mis-mixing the two components.

Available for download

Influence of Nano-particles on Water Intrusion of a Nanoparticle Enriched Zinc Rich Coating by EIS Analysis

Product Number: 51320-15147-SG

Author: Saiada Fuadi Fancy, Ahsan Sabbir, Kingsley Lau, Dale DeFord

Publication Date: 2020

$20.00

Zinc-Rich Primer (ZRP) based coating systems are widely used to protect steel infrastructure from aggressive exposure environments. These coating systems provide corrosion protection of the steel substrate by both barrier and sacrificial mechanism. Electrical continuity between the zinc pigments and steel substrate is the fundamental parameter in order to achieve galvanic protection and the use of high pigment volume concentration may not necessarily ensure effective electrical continuity. Moreover, high zinc content also degrades the bond of the coating matrix to the steel substrate. Carbon nanoparticles are being considered in the development of ZRP coating systems to overcome these limitations considering its physical, electrical and mechanical properties. In this effort, a nanoparticle enriched zinc-rich primer coating system (NPE-ZRP) was evaluated to identify the influence of nano-particles on moisture intrusion of the coating system. A traditional inorganic zinc-rich coating system
(ZRP) was also evaluated to compare the overall performance of the NPE-ZRP coating system. Pre-exposure to the different levels of humidity (5%, 75% & 100% RH) was incorporated to identify the coating robustness and the influence of nano-particles to mitigate corrosion. Environmental pre-exposure to humidity didn’t appear to have a detrimental effect on the coating durability. Both coatings allow moisture intrusion inside the system and EIS can be used as an effective tool to estimate the moisture content.

Available for download

Issues with Correlation between Accelerated Test Methods and Field Performance

Product Number: 51324-20975-SG

Author: Gunnar Dunér; Ted Best; Dongrui Yang; Victoria Gelling

Publication Date: 2024

$40.00

Lifetime prediction often relies on various accelerated methods with the end goal of accurately predicting time-to-failure and failure modes which may occur during real-world exposure. This presentation will focus on a case study for organic coatings over a coil-type metal substrate. Samples from 2011 were evaluated by multiple corrosion, humidity, flexibility, and adhesion measurements prior to field exposure at two test fences in Florida. An unexpected field failure, general blistering, was observed relatively rapidly after the field exposure commenced. This study focuses on data analysis of the 2011 physical and corrosion tests, field exposure results, and recent electrochemical and microscopic evaluations of unexposed 2011 retain samples. The retain samples were from the same 2011 study, but they were never tested and were maintained wrapped on a shelf in a laboratory. No correlation was observed between the standard 2011 tests and the resulting field performance. However, newer test methods, including Electrochemical Impedance Spectroscopy (EIS) and Scanning Transmission Electron Microscopy (STEM) cross-section analysis with elemental mapping, provided insight into the reason for the field blister failure. The proposed mechanism of failure was inconsistencies in pretreatment deposition which caused inconsistent EIS performance and localized blistering upon field testing.

Available for download

Low Dose Novel Additive Synergist/Enhancer for Imidazoline Based Oilfield Chemical Products

Product Number: MECC23-20179-SG

Author: Yolanda De-Abreu; Gabriela Garcia; Jeremy Moloney

Publication Date: 2023

$20.00

Throughout the oil and gas industry, carbon steel continues to be the material of choice for most downhole production tubulars and pipelines. Given the environment of typical oilfield operations, comprehensive integrity management programs are followed to guard against the threats of internal corrosion and material degradation of such assets. Although there are various corrosion mitigation options available, the application of corrosion inhibitor chemical products is commonplace given their relative ease of use and cost effectiveness.

Available for download

Methodology for Coated Infrastructure Inspection by Mobile Potentiostat

Product Number: 41215-912-SG

Author: Bobbi Jo Merten, Susan Drozdz, Cassidy Gills, David Tordonato, Jeff Ryan

Publication Date: 2015

$20.00

A test methodology is shown for field application of electrochemical impedance spectroscopy (EIS). The method utilizes low-cost, accessible materials to secure a temporary solution cell to the infrastructure’s coated surface. A laptop computer provides the power source and operating system for the mobile potentiostat during EIS data collection. This data provides a quantitative measure of the coating condition. The objective of this work is to incorporate EIS testing into standard coatings inspection to estimate remaining service life for the intact coating, which improves coatings maintenance planning for facility owners.

Available for download

Re-Evaluating Electrochemical Impedance Spectroscopy (EIS) for the Field Inspector’s Toolbox: A First Approach

Product Number: 41214-837-SG

Author: Bobbi Jo Merten, Allen Skaja, David Tordonato, Daryl Little

Publication Date: 2014

$20.00

Electrochemical Impedance Spectroscopy (EIS) has maintained a presence in protective coatings laboratories for decades. EIS is valuable in that it captures resistive and capacitive changes to a coating film as it is exposed to the environmental conditions that produce these changes, i.e., degradations. It also assists in ranking coating systems for their anticipated corrosion protection performance, complementing qualitative, visual observations.

Available for download

The Corrosion of Electrocoated Steel Studied by a Combination of Accelerated Exposure and Electrochemical Methods

Product Number: 51324-21121-SG

Author: Pedro Atz Dick; Elizabeth Brown-Tseng; Balaji Kannan; Walter Tarr

Publication Date: 2024

$40.00

Most of the performance assessment in the automotive electrocoat industry relies on continuous salt spray exposure tests or cyclic tests, which typically consist of a combination of salt spray and cycles of humidity and temperature. Because the analysis of the results is usually limited to visual quantification of corrosion, these tests alone offer little information about the mechanisms of coating degradation and their rate of progression. In this work, electrochemical tests were employed in tandem with accelerated exposure tests to better understand the degradation mechanisms of electrocoated steel. Different electrocoats were ranked based on their performance in cyclic cabinet tests, full immersion in NaCl, or by accelerated electrochemical methods. Finally, the trends observed in corrosion behavior were compared, and conclusions were drawn based on the mechanisms captured by electrochemical techniques and their relevance in each testing protocol.

Available for download

Towards Automated Development and Evaluation of Optimal Corrosion Inhibitor Products

Product Number: 51323-18783-SG

Author: Hector Klie, Arturo Klie, Ana Ferrer, Yolanda De-Abreu

Publication Date: 2023

$20.00

In most engineering and scientific applications, machine learning (ML) or artificial intelligence (AI) methods in general, are primarily oriented to design a statistical/heuristic procedure to predict the outcome of a system under new conditions. This mechanism aims at exploring non-evident correlations between inputs and outputs that are embedded in the data. However, a large body of this effort relies on black-box function approximations (e.g., neural networks) that have shown limitations to elucidate additional insights from the underlying physical process that generated the data. Thus, this type of knowledge is generated in a data-driven manner without fully explaining the physics governing the problem.

Available for download

Using Electrochemical Impedance Spectroscopy to Evaluate Corrosion Behavior of Painted Galvanized Steel in Atmospheric and Soil Exposure

Product Number: 41206-295-SG

Author: Mehrooz Zamanzadeh, George T. Bayer, Gordon Kirkwood

Publication Date: 2006

$20.00

A review of galvanized steel and painted galvanized steel processes is provided, as well as the fundamentals and requirements for painted galvanized steel products. The corrosion processes found with both galvanized steel and painted galvanized steels are discussed.

Available for download

When Undercover Agents Can’t Stand the Heat” The CIA and the Nether World of Corrosion Under Insulation (CUI)

Product Number: 41212-694-SG

Author: Mike O’Donoghue, Vijay Datta, Adrian Andrews, Sean Adlem , Matthew Giardina,Nicole de Varennes, Bill Johnson

Publication Date: 2012

$20.00

Corrosion under insulation (CUI) is a costly and complex problem for industry to contend with successfully. This paper describes a suite of accelerated laboratory tests undertaken in part to evaluate some of the claims made for engineered coatings touted to possess high heat resistance to 400°C and simultaneous anticorrosion properties.

Products tagged with 'electrochemical impedance spectroscopy (eis)'

Association for Materials Protection and Performance