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Celebrate World Corrosion Awareness Day with 20% off eCourses and eBooks with code WCAD2024 at checkout!

A Data-Driven Approach to Predicting Oxidation Rate Constants For Alloys

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High-temperature service places severe constraints on materials selection due to a combination of factors including the formation of oxide films, spallation and volatilization, and deterioration in mechanical properties. Materials selection is principally informed by laboratory testing under simulated conditions of temperature, thermo-mechanical fatigue, and environment chemistry (such as the presence of steam, exhaust gas chemistry, or salts). Models for predicting the high temperature performance of materials a priori are an active area for development, and are currently focused on elements such as predicting oxide formation, microstructure evolution and reduced order models for creep.

Product Number: 51323-19412-SG
Author: Christopher D Taylor
Publication Date: 2023
$20.00
$20.00
$20.00

High temperature alloys span multiple classes of materials including low alloy steels, stainless steels, nickel-chromium alloys, superalloys, aluminides, and, of more recent interest high entropy alloys, among others. Whereas many high temperature alloys deviate from the parabolic oxide growth law, the parabolic rate constant kp remains a useful indicator of the oxidation susceptibility for a given material. To design new classes of materials, and help with materials selection, it would be useful to directly predict the oxidation rate constants from materials features, such as composition and microstructure. With this goal in mind, parabolic rate constants have been collected from the literature for 75 alloys exposed to temperatures between 900 and 3000oF. Environments incorporated into the analysis include lab air, ambient and supercritical carbon dioxide, supercritical water, and steam. Predictive models for the oxidation rate constant were developed using machine learning and analyzed to provide insights into the leading factors producing corrosion resistance in these materials.

High temperature alloys span multiple classes of materials including low alloy steels, stainless steels, nickel-chromium alloys, superalloys, aluminides, and, of more recent interest high entropy alloys, among others. Whereas many high temperature alloys deviate from the parabolic oxide growth law, the parabolic rate constant kp remains a useful indicator of the oxidation susceptibility for a given material. To design new classes of materials, and help with materials selection, it would be useful to directly predict the oxidation rate constants from materials features, such as composition and microstructure. With this goal in mind, parabolic rate constants have been collected from the literature for 75 alloys exposed to temperatures between 900 and 3000oF. Environments incorporated into the analysis include lab air, ambient and supercritical carbon dioxide, supercritical water, and steam. Predictive models for the oxidation rate constant were developed using machine learning and analyzed to provide insights into the leading factors producing corrosion resistance in these materials.

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(Inspection) What Do You Really Need to Know to be a Good Coatings Inspector?

Product Number: 60-COAT_DEC21
Author: William D. Corbett
Publication Date: 2021
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The role of a Coating Inspector has evolved considerably over the past few decades, and the responsibilities have increased over what used to be a rather straightforward job: to verify that surface preparation and coating application meet the project specification requirements. Today there are week-long or multi-week basic and advanced coating inspection courses, specialty courses that are industry-specific (e.g., bridge, nuclear), courses that are substrate-specific (e.g., concrete coatings inspection) and even coating-specific (e.g., inspection of thermal spray coatings). 
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(Inspection) Coating Condition Assessments: The First Step in Fighting Corrosion on Aboveground Sto

Product Number: 53-COAT_DEC21
Author: Adam G. Beers / Lake H. Barrett, Jr.
Publication Date: 2021
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Being proactive and performing scheduled coating condition assessments on above ground storage tanks to prevent corrosion is of utmost importance to protect assets. Undetected corrosion can result in product contamination, section loss, create compliance issues resulting in fines levied by governmental agencies, and increase costs of asset replacement. Planned and detailed coating/lining condition assessments can help a tank owner realize the current condition of their assets and maximize life expectancy.
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(Coating Formulation) Can Low Zinc Epoxy Primers Work as Well as Traditional Zinc Rich Epoxy Primers

Product Number: 47-COAT_DEC21
Author: Alex Yagüe / Pinturas Hempel / David Morton
Publication Date: 2021
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Zinc-rich primers, with zinc dust loadings of 80-85% by weight in the dry film, are often the preferred primer during new construction of assets placed in environments with high atmospheric corrosivity. Coating standards such as SSPC-Paint 20 and ISO 12944 demand that zinc-rich primers contain at least 65% and 80% zinc dust by weight in the final dry film, respectively. Traditional zinc rich primers need this high zinc loading to achieve galvanic protection of steel. New technology allows us to develop zinc primers with a lower content of zinc and/or different zinc morphology than dust to provide similar or better corrosion protection to the steel.
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