AMPP Store - Individual Conference Papers

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Real-Time Measurement of Aerospace Organic Coating Condition and Performance in Atmospheric Corrosion Conditions

Product Number: 51324-20742-SG

Author: Victoria Avance; Rebecca Marshall; Fritz Friedersdorf; Matthew Repasky; Henry Yuchi

Publication Date: 2024

$40.00

The purpose of this work is to develop a predictive coating condition model that processes continuous coating condition measurements to characterize changes in coating protection in atmospheric laboratory and outdoor environments. Zero resistance ammeter measurements across an interdigitated electrode composed of two different aerospace materials were used to monitor the inhibitive ability of a scribed coating and detect loss of inhibitor protection. Results will be presented that demonstrate the ability of a stochastic model to detect loss of inhibitor protection and predict coating failure in comparison to observational results. A description of the samples, electrochemical measurements, and test environments will be reported along with the approach used to extract parameters to model and predict coating performance.

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Real-Time Measurement of Electrocoat, Powder Coat, and Organic Coatings for Atmospheric Galvanic Protection

Product Number: 51324-20945-SG

Author: Victoria Avance; Fritz Friedersdorf

Publication Date: 2024

$40.00

In this laboratory work, zero resistance ammeter measurements were used to collect galvanic corrosion measurements for scribed organic coating samples and e-coated samples in situ. For this work, a new sample design was derived from samples currently used in the automotive industry consisting of a base plate and a cover plate of another material to form a galvanic couple with a crevice between them. The samples were connected to a developmental test system that uses zero resistance ammeter (ZRA) measurements to collect galvanic corrosion rates for multiple samples in situ. E-coated samples were evaluated in accelerated corrosion tests for comparison with traditional organic coatings. A description of the samples, electrochemical measurement device, and methods for coating testing will be reported along with the analysis of the resulting data and its implications for evaluating various coating types.

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Real-time measurement of organic coating performance for atmospheric galvanic corrosion protection

Product Number: 51323-19036-SG

Author: Victoria Avance, Lindsay Davis, Brandi Clark, Fritz Friedersdorf

Publication Date: 2023

$20.00

The corrosion of aircraft costs the U.S. Department of Defense more than $20 billion annually and accounts for approximately 20% of all maintenance. Coatings are the most effective way to protect aircraft, but they have a finite lifetime and must be maintained or replaced before the underlying substrate is damaged by corrosion. Current aircraft maintenance practices call for coating inspections and repairs based on elapsed time and not on measurements of coating health.

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Reassessment Of CP Effectiveness In A Multifaceted Electrolyte

Product Number: 51321-16863-SG

Author: Paul Murray, C.E.T.; Wolfgang Fieltsch, P.Eng.; Samay-Sanat Sahoo, P.Eng.; Stephen Gibson, P.Eng.; Lyndon Crone, E.I.T.

Publication Date: 2021

$20.00

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Recent Advance in Corrosion Monitoring of Atmospheric Corrosion

Product Number: 51319-12713-SG

Author: Dominique Thierry

Publication Date: 2019

$20.00

A compact and autonomous corrosion sensor using the principle of electrical resistance variations of its metallic sensitive tracks has been used for different applications under atmospheric corrosion conditions. The measurement of the corrosion rate is performed in-situ both under laboratory and field exposure. From the results it is possible to better understand the atmospheric corrosion of steel and hot-dip galvanised steel under various exposure conditions. The technique should also allow the design of realistic and reliable corrosion tests for different indiustrial applications.

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Recent Advancements of Corrosion Inhibitors Using Graphene Oxide-Based Nanomaterial

Product Number: 51323-19268-SG

Author: Bader Alharbi, Norah Aljeaban, Ahmed Busaleh, Tawfik A. Saleh

Publication Date: 2023

$20.00

The corrosion is a spontaneous chemical reaction connected to heat exchangers and pipelines that degrades the strength and quality of utilized steel. The aggressive environment, which is ongoing, intense, and frequently difficult to totally prevent, is the key factor contributing to the metal's deterioration. Additionally, it demonstrates a serious economic problem that causes industrial operational assets to require expensive repairs, ruining the public space.

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Recent Advances In Depth Assessment Of Stress Corrosion Cracking Using Tangential Eddy Current Array On Carbon Steel Pipelines

Product Number: 51322-17983-SG

Author: Michael Sirois, Mathieu Bouchard

Publication Date: 2022

$20.00

Stress corrosion cracking (SCC) is a failure mechanism that occurs in susceptible materials exposed to a corrosive environment and submitted to tensile stress above a certain threshold. In the presence of these combined factors, SCC can occur and potentially lead to the failure of an asset. This failure mechanism has been widely reported in several susceptible alloys of carbon steel, making SCC a considerable threat for pipelines in contact with corrosive soil.

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Recent Advances in Hybrid Laser-Arc Welding of Thick Steel Plates

Product Number: MPWT19-15295

Author: Mohamed Wahba, Masami Mizutani, Seiji Katayama

Publication Date: 2019

$0.00

With the objective of reducing the number of welding passes in thick plate welding, hybrid laser-arc welding technique was utilized to one-pass weld 25mm thick steel plates. Butt joints were designed with a square groove and 2.5mm air gap. Either ceramic strip or submerged arc welding flux was used for joint backing. The joint gap was filled up with cut-wire particles of the same chemical compositions as those of the arc welding filler wire. Cut-wire particles were inserted to protect the backing material from direct interaction with the laser irradiation. Welding parameters were optimized to obtain full penetration joints without damaging the backing material. Square groove butt joints of 25mm thickness were successfully welded in one welding pass. Similarly, 50 mm thick square groove butt joints could be double-side welded

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Recent Advances in Water-Based Coatings and Their Contributions to Asset Protection and Sustainability Goals

Product Number: 51324-20581-SG

Author: Brian Cheshire; Jeremy Ethington; Jennifer Gleisberg

Publication Date: 2024

$40.00

In a society that strives to reduce its environmental impact, water-based coatings are growing in popularity. Historically, solvent-based coatings have out-performed water-based coatings in some service environments, but advances in coating technology have allowed for higher-performing water-based alternatives on the market. This paper will discuss some of the previous misconceptions surrounding water-based coatings and how newer formulations of these materials can provide a multitude of advantages over their solvent-based counterparts. Also, much discussion will be laid out as to how these materials can provide a more sustainable solution while not compromising service life. After reading this paper, the reader will have a greater understanding of these next generation water-based coatings and their benefits. In addition, there will be an in-depth discussion on some of the applications where these materials are now appropriate, including potable water immersion service and exterior environments where top level color and gloss retention performance is coveted.

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Recent Advances On The Influence Of Microstructural Characteristics On Corrosion Resistance In H2SO4 Of Anodized Titanium

Product Number: 51322-17589-SG

Author: Luca Casanova, MariaPia Pedeferri, Gianluigi A. Botton, Marco Ormellese

Publication Date: 2022

$20.00

Industrial usage of Plasma Electrolytic Oxidation (PEO) has grown consistently in recent years, thanks to the improved characteristics imparted to the oxide film in terms of surface adhesion, hardness, crystallinity, uniformity, and corrosion resistance. The metallic substrate is not subjected to elevated temperature and the overall equipment complexity is relatively simple, making the technique a good candidate for surface functionalization. In PEO treatments, high voltages are employed (~ 150-750 V 1) allowing for the formation of an insulating, or at least semiconductive, oxide layer that’s limits ion transport responsible for the initial coating growth. Beyond the spark voltage (prerequisite the enter the PEO regime) oxidation does not occur only as the result of a continuous flow of ions but rather it takes place after the cooling of a plasma discharge.

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Recent Developments in Glassflake Technology and the Use of Glassflake Coatings in Heavy Duty Coating Systems

Product Number: 41205-170-SG

Author: Graham Greenwood-Sole

Publication Date: 2005

$20.00

Traditional coating systems for steel have often used a sacrificial primer, barrier coat and topcoat, to provide good UV resistance and appearance. One fundamental problem with all organic coating systems is that there will always be some permeation through the coating. These systems are therefore sacrificial in nature and have a finite life. The use of multi-coat systems also dramatically increases application time, presenting problems both for new construction and maintenance projects.

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Recent Developments in the Measurement and Monitoring of Climatic Conditions

Product Number: 41210-539-SG

Author: John Fletcher

Publication Date: 2010

$20.00

The measurement of climatic conditions prior to applying a coating is vital to the success of the process, as it is well known that a surface at the dewpoint temperature will have a thin film of moisture over which the paint will be applied.

Individual Conference Papers

Association for Materials Protection and Performance