AMPP Store - Products tagged with 'electrochemistry'

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Casing Corrosion in Geothermal Environments Containing Sulfuric Acid

Product Number: 51324-20932-SG

Author: Joseph Thevakumar; Joshua Owen; Richard Barker; Evgeny Barmatov

Publication Date: 2024

$40.00

This work focusses on understanding corrosion severity and material performance within model geothermal sulfuric acid (H2SO4)-containing environments. With the use of a tantalum-lined high pressure/high temperature autoclave, the corrosion behavior of N80 carbon steel was compared against duplex stainless steel when exposed to H2SO4 solutions (pH 2-4) at temperatures up to 150°C. Electrochemical linear polarization resistance measurements were implemented to gather real time corrosion kinetic data. Complimentary ex-situ analyses (scanning electron microscopy and white light interferometry) were conducted to understand the corrosion mechanism and quantify localized corrosion rates. A quantitative relationship was identified in terms of pH, temperature and metal corrosion for the selected materials to highlight material capability within such low pH geothermal environments.

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Cathodic Protection and MIC - Effects of local electrochemistry

Product Number: 51317--9452-SG

ISBN: 9452 2017 CP

Author: Stefan Jansen

Publication Date: 2017

$20.00

The goal of this research was to improve the understanding of the mechanisms of cathodic protection (CP) by determining the interactions between corrosion and local chemical parameters, such as pH, under varying CP conditions, both in the absence and presence of MIC.

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Characterizing the Evolution of Iron Carbonate in a Demanding CO2 Environment Using a Combined Electrochemical Impedance Spectroscopy and Linear Polarization Resistance Approach

Product Number: 51323-19278-SG

Author: Robert Jacklin, Joshua Owen, Danny Burkle, Richard C. Woollam, Richard Barker

Publication Date: 2023

$20.00

Carbon steel exposed to aqueous CO2 environments can be conducive to the formation of naturally protective corrosion products, namely iron carbonate (FeCO3). Understanding how FeCO3 develops across a range of conditions is a critical step in enabling the optimization of corrosion products as a natural form of corrosion mitigation. To date, most studies investigating FeCO3 development focus on near-neutral pH solutions conducive to fast precipitation while test pressures are generally atmospheric to simplify in situ electrochemical measurements.

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Corrosion Behavior Of UNS S31600 In Purified Molten Salts

Product Number: 51321-16945-SG

Author: Chi Ying Loh; Jared O. Butner; Connor J. Veronese; Christopher J. Faraj; Chi Ying Loh; Jared O. Butner; Connor J. Veronese; Christopher J. Faraj; Vilupanur A. Raviilupanur A. Ravi

Publication Date: 2021

$20.00

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Corrosion of Stainless Steel Alloys in Fresh Water Simulating Condensed Water in Contact with Supercritical CO2- An Electrochemical Study

Product Number: 51324-20621-SG

Author: Suresh Divi; Bruce Craig; Adam Rowe

Publication Date: 2024

$40.00

There has been a recent and significant surge in projects for injection of supercritical CO2 (SC-CO2) into saline reservoirs due to enhanced financial incentives. This has created a rush to permit projects without the necessary data to make informed decisions regarding the corrosion resistance of materials for well completions. Of urgent need is a better understanding of the corrosion performance of alloys for injection tubing and well equipment exposed to the injectate above the saline aquifer contact zone. An electrochemical study was performed to simulate contact of SC-CO2 containing some impurities with fresh water consistent with water condensing from the CO2 phase. The simulated condition represents a pH of 3 typical of water in contact with CO2 at greater than 73.8 bar and 31oC. A range of alloys were tested, including 13Cr, 17Cr, 22Cr, and others. Weight loss corrosion and pitting attacks were measured. The results of this study can be used for life prediction only in the cases where there is no localized corrosion to support material selection decisions for well equipment based on upsets and well shut-in during the life of SC-CO2 injection.

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Corrosion-Induced Hydrogen Entry to Steel and a Risk of Hydrogen Embrittlement

Product Number: 51323-19560-SG

Author: Darya Rudomilova, Gerald H. Luckeneder, Tomáš Prošek, Josef Faderl, Andreas Muhr

Publication Date: 2023

$20.00

Hydrogen embrittlement is a process that results in a decrease of the ductility of metals as a result of absorbed hydrogen. Advanced high-strength steels used in the automotive industry are materials that are considered prone to hydrogen embrittlement. Hydrogen can enter the material during steelmaking or processing steps, such as pickling, cleaning, phosphating, and electroplating.

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Determination Of Oxygen Limits For Corrosion Resistant Alloys (Cras) In Oil & Gas Produced Water Based On Electrochemical Test Methods – Part 2.

Product Number: 51322-17947-SG

Author: Marion Duparc, Roy Johnsen, Jan Ivar Skar, Tov Eivind Saxegaard

Publication Date: 2022

$20.00

Crevice corrosion is a geometrical-dependent type of localized attack that occurs in occluded regions where a stagnant and corrosive electrolyte is in contact with the surface of a passive metal^1,2. Crevices are present in all industrial designs and can lead to major failure since their detection is often challenging^3,4. Main strategies for the prevention and mitigation of crevice corrosion include design awareness and adequate materials selection⁵.

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Electrochemical Evaluation of the Localized Corrosion Susceptibility of Ni Based Precipitation Hardening Alloys in Supercritical Sour Gas Service Conditions

Product Number: 51324-20426-SG

Author: Raymundo Case; Lei Zhao; Yuan Ding; Jason Ren; Tin Dunne

Publication Date: 2024

$40.00

This study evaluates the susceptibility to localized corrosion of alloys UNS N06625 and N07725 in both supercritical and subcritical CO2 with H2S present. Electrochemical experiments were performed at 200 °C, with CO2 present in both supercritical at 1500 psi and sub critical (450 psi) conditions, the H2S content was up to 10% mol and chloride concentration in the brine up to 25000 ppm, the test are performed with 1 g/l of S. The results in this study, indicate that the performance of both alloys in supercritical CO2 phase with H2S, show an extremely high anodic dissolution rate. This behavior is attributed to the formation of NiCO3 and NiS. The H2S content within the supercritical CO2 phase can support a high cathodic reaction rate through the S reduction reaction, which is incorporated in the passive layer to form Ni sulfides, this creates a passive layer susceptible to pitting at high Cl- content.

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Electrochemical Investigation and Modeling of Cathodic Reactions on Iron Sulfides in Acidic Solutions

Product Number: 51323-19428-SG

Author: Payman Sharifi Abdar, Bruce Brown, Srdjan Nesic

Publication Date: 2023

$20.00

H2S corrosion, also known as sour corrosion, is a very serious type of metal degradation in oil and gas transmission pipelines. When H2S is present in an operating pipeline, localized corrosion is the type of attack which contributes to the most failures in oilfields, consequently, its impact on the economics of oil and gas production is indisputable. Therefore, mitigation of this type of corrosion could prevent such failures and significantly enhance asset integrity while reducing maintenance costs as well as eliminating environmental damage.

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Electrochemical Testing To Predict Corrosion Performance on Various Aluminum Alloys

Product Number: 51321-16292-SG

Author: Dr. Catherine A. Munson/Dr. Sjon Westre/Alex Westre

Publication Date: 2021

$20.00

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Electrodeposited Nanolaminar Zinc-Nickel Alloy Coatings – Analysis of Advanced Corrosion Resistance Performance

Product Number: 51323-19204-SG

Author: Herman E Amaya, Timm Burnett, Richard Morgan, Vikas Joshi

Publication Date: 2023

$20.00

Nanolaminar or nanostructured zinc-nickel electrodeposited coatings are compliant with the composition requirements of ASTM B841 and F1941 (12 to 16% Ni: balance Zn). The term nanolaminar refers to the successive thin layered deposition of nanostructured grains (≈ 25nm); accomplished by modulating the electrodeposition into a waveform applied at defined time periods and varying current densities. Standard electroplating in contrast, applies a continuous DC current throughout the electrodeposition process, resulting in grains that while initially fine will coarsen as a function of thickness ranging to the micrometer range.

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Evaluation of Stray Current Interference of Thermally Insulated Pipelines in Real Soil Environments

Product Number: 51323-19229-SG

Author: Yoon-Sik So, Woo-Cheol Kim, Sin-Jae Kang, Jung-Gu Kim

Publication Date: 2023

$20.00

As using underground infrastructures, such as heat transport facilities continues for a long time, damage cases due to corrosion continue to occur. Therefore, it is essential to understand the corrosion behavior of underground metal facilities in terms of safety and economy. Many studies have been conducted on the corrosion of pipeline steels in soil.

Products tagged with 'electrochemistry'

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