AMPP Store - Products tagged with 'corrosion'

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Influence of grout conditions on duct-to-strand galvanic coupling within bonded internal posttensioned tendons

Product Number: 51323-19371-SG

Author: David Dukeman, Dr. Christopher Alexander

Publication Date: 2023

$20.00

External post-tensioned tendons are used in segmental precast box girder bridge construction to hold segments together and prevent service cracking. The tendons consist of multiple 7-wire prestressing strands contained within a high-density Polyethylene (HDPE) duct located within the inner opening of the box girders. They run continuously through deviator blocks, which helps form the profile of the tendon.

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Influence Of Organic Acids Released During Hydrothermal Liquefaction Of Biomass On Corrosion Of Candidate Reactor Alloys

Product Number: 51321-16612-SG

Author: Minkang Liu/ Yimin Zeng/ Xue Han/ Jing-Li Luo

Publication Date: 2021

$20.00

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Influence of the Soil Moisture Level and Differential Aeration Cell on the Corrosion Rate of Carbon Steel and Zinc Coated Steel

Product Number: 51324-20694-SG

Author: Erwan Diler; Philippe Verpoort; Souhail Amami; Ansbert De Cleene; Benoit Emo

Publication Date: 2024

$40.00

Soil is a complex media involving solid particles, gas and liquid phases. Among the many soil parameters influencing the corrosion rate, beyond the pH and resistivity, disregards the microbial activity, the moisture level and the related oxygen diffusion is usually pointed out as a key parameter. Depending on the soil texture and related ability to retain water, as well as the ground water level, differential aeration corrosion cells (DACC) might appear. Such phenomenon locally affects the corrosion rate and distribution by galvanic action. This phenomenon is particularly relevant for large metallic pieces such as buried pipes, tubular piles, and sheet piles. In this study, an experimental setup composed of 30 coupons in carbon steel or zinc coated steel was exposed in two different soils to a vertical gradient of moisture level. The setup allows measuring the corrosion potential and galvanic current of each coupon, before and after their interconnection. The obtained results highlight i) the influence of the moisture level and oxygen diffusion on the corrosion potential for both carbon steel and zinc, and ii) quantify the differential aeration corrosion cells. The results are compared to coupons exposed for 1 year in the same environment, with and without DACC.

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Installed UT Sensors for Continuous Corrosion Monitoring: Better Understanding How Process Changes Influence Corrosion Rates

Product Number: 51321-16228-SG

Author: Mitchell Gribi

Publication Date: 2021

$20.00

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Instant-Off Potentials Underestimate Cathodic Protection Levels on Pipelines

Product Number: 51323-19083-SG

Author: Peter Haas

Publication Date: 2023

$20.00

Cathodic protection (CP) is used to prevent external corrosion on underground pipelines. The effectiveness of CP is commonly evaluated by measuring the DC potential (voltage) of the pipeline with respect to a reference electrode located on the surface of the earth above the pipeline. Criteria used to interpret pipeline potential measurements are given by Section 6 of NACE SP-0169-2013 “Control of External Corrosion on Underground or Submerged Metallic Piping Systems.

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Integrated Coating System For Corrosion Protection Of Carbon Steel In Artificial Geothermal Brine

Product Number: 51322-17708-SG

Author: Gabriela Aristia, Le Quynh Hoa, Ralph Bäßler

Publication Date: 2022

$20.00

Geothermal energy is a promising choice for alternative energy resources due to its reliability and low CO₂ emissions. One way to harness this energy, is to extract hot fluid from a geothermal well. Geothermal fluids are a complex medium with different physical and chemical properties depending on the location and depth of a geothermal well. Thus, these fluids can be corrosive to the geothermal power plant depending on the corrosivity class. The geothermal power plant consists of various parts, such as pipelines and heat exchangers. For continuous power generation, this power plant should be safe and durable. Therefore, it is important to protect the infrastructure in this environment from corrosion.

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Integrated Corrosion Analysis Software and its Application to dc Corrosion Analysis

Product Number: 51323-18819-SG

Author: F. P. Dawalibi, J. Cheng, Y. Jiang,

Publication Date: 2023

$20.00

When a metal or metal alloy is immersed in an electrolyte made of a conducting material of sufficient oxidizing power, such as moist soil, it will corrode according to a well-defined electrochemical mechanism. dc corrosion is a result of dissolution of material due to oxidizing reactions, liberating electrons and forming positive ions transported into the electrolyte, leading to material loss. The current-potential relationship governing this electrochemical process termed polarization, is non-linear. This relationship is often represented by a polarization curve, which is typically, an experimentally determined function. There are a number of parameters that can contribute to the final characteristics of the polarization curve within a system ranging from material parameters (e.g. material, geometry) to environmental factors (e.g. composition of the electrolyte).

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Integrating Real Time Corrosion Measurements with Process Data Using Plantweb Insight

Product Number: 51321-16275-SG

Author: William Fazackerley

Publication Date: 2021

$20.00

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Integration of microstructure- mechanical with corrosion characterization of UNS S31603 material manufactured by Direct Energy Deposition

Product Number: 51323-19427-SG

Author: M. L Cedeno- Vente, I. Karaman, A. C. Ferrel- Alvarez, R. Case, M. Vaughan, H. Castaneda

Publication Date: 2023

$20.00

The UNSS31603 stainless steel (316-L SS) is one of the most used austenitic alloys in the industry for its excellent corrosion resistance and mechanical properties. The 316-L SS is mainly fabricated by conventional methods such as casting, rolling and forging. However, in recent years the investigation and production of the 316-L SS through additive manufacturing (AM) techniques have seen a sharp increase.

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Integrity evaluation of offshore wind structures utilizing complementary monitoring techniques

Product Number: 51323-19292-SG

Author: Annika Martina Diederichs, Anders Nilas Rosborg Black, Khadijeh Nastaran Jafari, Birit Buhr

Publication Date: 2023

$20.00

To categorize the level of corrosion internally in uncoated offshore wind turbine structures a combination
of different online monitoring systems has successfully been utilized combining findings from online
corrosion monitoring, continuous water level monitoring and online water quality monitoring.

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Intellisyn™ - A New Class Of Multifunctional Smart Particles For Advanced Corrosion Protection

Product Number: 51322-17959-SG

Author: Benjamin Pearman, Xuejun Zhang, Dillon Campbell, Victoria Scarborough, Stephen Dickey

Publication Date: 2022

$20.00

Left unprotected, metals corrode quickly which over time contributes to the loss of structural integrity and the failure of buildings, bridges, oil & gas platforms, airplanes, cars and many other metal assets, all of which pose a risk to human safety and the surrounding environment. In 2016, the National Association for Corrosion Engineers (NACE) – now known as AMPP – published a landmark study, well-known to those attending this conference, that estimated the direct cost of corrosion to the world economy as $2.5T per year, equivalent to 3.4% of the Gross World Product (1). In the United States, the annual cost of corrosion is estimated at 3.1% of gross domestic product (2), equivalent to $635B (2018). When including indirect costs, such as asset downtime, ship dry-docking and the impact of bridge collapses, the cost of corrosion is estimated at twice that amount.

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Internal Corrosion in Natural Gas Pipelines

Product Number: 51323-19507-SG

Author: Christopher A. Walker

Publication Date: 2023

$20.00

Corrosion is defined as the degradation of a material or its properties due to a reaction with the environment and is one of the most common pipeline integrity threats for operators. External corrosion may be visually inspected during excavation; however, due to accessibility, additional non-destructive examination (NDE) methods must be utilized to identify the presence and severity of internal corrosion.

Understanding the chemistry and electrical properties of how corrosion occurs aids in mitigating the presence of corrosion, specifically internal corrosion.

Products tagged with 'corrosion'

Association for Materials Protection and Performance