AMPP Store - Individual Conference Papers

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Naturally Buffered Iron Chloride Containing Solutions for SSC Tests of Low Alloy Steels

Product Number: 51324-20732-SG

Author: Florian Thebault; Hervé Marchebois

Publication Date: 2024

$40.00

Addition of controlled quantity of iron (II) chloride (FeCl2) in a test solution allows a tight control of the pH of Sulfide Stress Cracking (SSC) tests for low alloy steels. The natural buffering capacity is a consequence of the precipitation of iron sulfide corrosion products at a very early stage during the corrosion test. This work shows that FeCl2 can efficiently replace acetic acid for pH buffering of the SSC tests. NACE TM0177 Method A and D tests have been performed and showed similar environmental severity for SSC compared to standardized test solutions at a given pH. Thanks to a reduction of the corrosion rate in FeCl2 containing environments, which limits the increase of the applied stress during the test, the environmental severity appears to be fairly evaluated. Iron sulfide scale characterization and failure observations support the conclusion that FeCl2 containing solutions do not modify the SSC corrosion mechanism. This alternative test solution is well adapted to the determination of threshold pH for SSC.

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Naval Aviation Environmental Severity Correlation

Product Number: 51322-17808-SG

Author: Christine Sanders, Raymond Santucci, Jr

Publication Date: 2022

$20.00

The exposure environment of an engineering material quite often has a large impact on how that material behaves over time. Environments are distinguished by differences in meteorological patterns, geography, salinity, Ultraviolet (UV) radiation, etc^1-3. Thus, the degradation of various materials scales proportionately to the characteristics of the exposure site, with more severe sites leading to worse degradation. Developing an understanding of how the local environment impacts the corrosion rates of metals and the deterioration of anti-corrosion coatings is critical for informing asset maintenance schedules and lifetime predictions⁴.

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Naval Sea Systems Command and the National Surface Treatment Centers Preservation Technical and Quality Assurance Assessment Program

Product Number: 41205-206-SG

Author: Richard B. Southard

Publication Date: 2005

$20.00

The U.S. Navy spends tens of millions of dollars each year repairing failed coatings on its ships and submarines. The Naval Sea Systems Command (NAVSEA) and the National Surface Treatment Center (NST Center) have developed and implemented a process to assess preservation work being conducted by both public and commercial shipyards and the Navy’s Supervisor of Shipbuilding commands

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Necessity and Challenges of Using a Float Coat for Preservation of Ballast Tanks

Product Number: 51317--9366-SG

ISBN: 9366 2017 CP

Author: John Wulterkens

Publication Date: 2017

$20.00

Traditional water treatment methods pose several challenges to large-vessel preservation. A solution to these challenges involves the application of an immiscible corrosion inhibiting oil partition on the water surface. This paper will highlight challenges of traditional preservation methods and examine the efficacy of one commercial float coat.

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New Technology: Coatings Inspection Instrumentation

Product Number: 51218-108-SG

Author: Matt Fajt

Publication Date: 2018

$20.00

This workshop will review historical methods of data collection and the latest, ever evolving technology to provide rapid, accurate inspection results.

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New Additives for Environmentally Friendly Coatings

Product Number: 41206-236-SG

Author: John W Du

Publication Date: 2006

$20.00

Over the past few decades, dramatic technology shifts have occurred in the coatings industry. Rapid changes in pigments, resins, and solvents have helped make environmentally friendly coatings possible; however, such changes have also created many technical hurdles.

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New Additives for Today’s Modern Coatings

Product Number: 41213-738-SG

Author: John Du

Publication Date: 2013

$20.00

Today’s coating formulations have and are continuing to evolve in chemistry and composition in response to environmental regulations as well as raw material availability, and social expectations. The performance expectations for coatings have, if anything increased rather than decreased.

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New Advances in Corrosion Protection: Powder Coating of PEKK

Product Number: 51324-20610-SG

Author: Zak Eckel; Yash Adhia

Publication Date: 2024

$40.00

Poly Ether Ketone Ketone (PEKK) is part of the Poly Aryl Ether Ketone (PAEK) family of ultra-high-performance polymers. These polymers have an outstanding combination of physical, chemical, and thermal properties making them excellent for anti-corrosive coatings in demanding applications. Through the development of a unique copolymer structure, the ratio of monomer units allows a range of melting points (305 -358 oC) and crystallization rates (t1/2: 2-32 minutes). This capability significantly broadens the processing window of PEKK compared to other PAEKs and thermoplastic powder coatings, enabling powder coating processes while still delivering the highest performance. In this presentation we demonstrate the corrosion resistance of PEKK-based powder coatings in aggressive chemical environments while retaining its mechanical performance. The coatings are applied easily through conventional electrospray equipment without the need of a primer and the processing window can be tuned to provide a defect-free finish without any residual stresses.

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New Advances in Epoxy Protective Coatings

Product Number: 41216-983-SG

Author: James McCarthy

Publication Date: 2016

$20.00

Epoxy coatings are a mainstay of the protective and marine coatings markets. Used as intermediate coats over inorganic and organic zinc rich primers or used as direct-to-metal primers in coating systems, epoxy coatings are widely recognized for their versatility and the excellent corrosion resistance they provide. One drawback to current epoxy coating technology is that it requires separate packaging for the epoxy resins and the amide or amine hardeners because the chemical reaction between these materials causing the applied film to cure to a dry state would also cause the bulk material to gel if packaged together (pot life).

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New Anti-Fouling Technology Applied to Prevent the Growth of Invasive Species on the Southern Delivery Project in Pueblo, Colorado

Product Number: 41213-725-SG

Author: Steve Davis, Brett Allison, Charles Fisher

Publication Date: 2013

$20.00

The Southern Delivery System is a 62-mile steel pipeline built to transport water from Pueblo Reservoir to Colorado Springs. A contract was awarded to the coatings applicator to install an antifouling coating system that would start from the new conduit, exiting the dam, to the first bulkhead.

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New Approach on Iron Sulfide Scale Modeling and Prediction at pH 4-7

Product Number: 51320-14532-SG

Author: Xin Wang, Saebom Ko, Alex Yi-Tsung Lu, Guannan Deng, Yue Zhao, Chong Dai, Samridhdi Paudyal, Amy T. Kan, Mason B. Tomson

Publication Date: 2020

$20.00

In this study, a plug flow reactor was built to investigate iron sulfide scale precipitation at various temperatures, pH and ionic strength conditions and two pieces of carbon steel C1018 coupons were put inside as reaction surfaces. The ferrous ion and total sulfide in collected effluent samples were measured to determine precipitation kinetics and solubility. The solid that formed on the steel surfaces were analyzed by Scanning Electron Microscopy (SEM/EDS) and X-ray Diffraction (XRD). The solubility data from this study and literature were collected and fitted by Matlab to build up a reliable FeS solubility prediction model. The experimental results show that mackinawite is the predominant precipitated scale and could be stable for a week at pH higher than 6.0. Iron sulfide precipitation is under diffusion control, accelerated by high temperature and ionic strength. At pH 6 – 7, the aqueous phase neutral species, such as 𝐹𝑒𝑆0𝑎𝑞, plays an important role in the solubility and precipitation kinetic. Based on this study, a new solubility model that combines Pitzer theory and ion-complexes (speciation of ferrous ion) has been developed for iron sulfide solubility calculation and scale prediction.

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New Architectural Coatings Technology Targeted At Stricter Hospital Infection Protocols

Product Number: 41212-704-SG

Author: Steven Reinstadtler

Publication Date: 2012

$20.00

For the hospital administrator who is concerned with meeting the newer CDC (Center for Disease Control) and JCAHO (Joint Commission on Accreditation of Healthcare Organizations) protocols without sacrificing aesthetics and durability, there are new developments in architectural coating technologies for targeted hospital environments that require a higher frequency of cleaning with harsher disinfectants.

Individual Conference Papers

Association for Materials Protection and Performance