AMPP Store - Products tagged with 'magnetite'

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51318-11027-Formation Mechanisms of Iron Oxide and Iron Sulfide at High Temperature in H2S Corrosion Environment

Product Number: 51318-11027-SG

Author: Shujun Gao / Bruce Brown / David Young / Srdjan Nesic / Marc Singer

Publication Date: 2018

$20.00

Previous studies have shown that, from 80°C to 200°C in an H2S only environment, magnetite forms as an inner layer while iron sulfides are found in the outer layer. A descriptive model for the formation mechanisms of magnetite and iron sulfide at high temperature is presented.

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51318-11071-Corrosion Behavior of Naphthenic Acids Isolated from Vacuum Gas Oil Crude Fractions

Product Number: 51318-11071-SG

Author: Yathish Kurapati / Winston Robbins / Gheorghe Bota / David Young

Publication Date: 2018

$20.00

Corrosion behavior of native naphthenic acids in two VGO fractions are compared with white oil solutions of the acids isolated from them by solid phase extraction (SPE). Tests are per the in-house “pretreatment-challenge” protocol on carbon steel and 5Cr steel samples.

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51318-11622-Effectiveness of an imidazoline-type inhibitor against CO2 corrosion of mild steel at elevated temperatures (120C-150C)

Product Number: 51318-11622-SG

Author: Yuan Ding / Bruce Brown / David Young / Marc Singer

Publication Date: 2018

$20.00

Inhibition performance of a diethylenetriamine tall oil fatty acid imidazoline-type inhibitor (DETA/TOFA imidazoline) against CO2 corrosion of an API 5L X65 carbon steel was studied at two temperatures, 120C and 150C.

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Comprehensive Laboratory Analysis Of AC Coupon Test Stations

Product Number: 51322-18151-SG

Author: Mehrooz Zamanzadeh, Martin Latona, George Bayer, Anil Kumar Chikkam

Publication Date: 2022

$20.00

Several alternating current (AC) coupon test stations (CTS) located near AC power lines were investigated to assess the AC interference corrosion risk of the test coupons. Asstation consisted of two ½ inch (1.27 cm) diameter and 1received each AC test inch (2.54 cm) long carbon steel (CS ) coupons. Coupons are much larger than 1 cm ² and current density measurements are not 100% relatable to the SP21424 or ISO 18086 criteria, since these refer to measurements on (typically) 1 cm² . The current densities measured on the coupons in this study will underestimate the AC corrosion threat.

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Galvanic Interactions Between Surface Layers And Bare Carbon Steel In Aqueous CO2 Environments

Product Number: 51322-17654-SG

Author: Joshua Owen, Francois Ropital, Gaurav R. Joshi, Jean Kittel

Publication Date: 2022

$20.00

In aqueous carbon dioxide (CO₂)-saturated environments, such as those found in geothermal energy, oil and gas and carbon abatement industries, various naturally occurring layers can be found on the internal surface of carbon steel infrastructure, such as pipelines, as they corrode in the mildly acidic conditions. Amongst the most commonly found layers are iron carbonate (FeCO₃), iron carbide (Fe₃C) and magnetite (Fe₃O₄). FeCO₃ can offer corrosion protection to the underlying steel when formed under certain conditions, as too can Fe₃O₄. Fe₃C is typically associated with enhancement of electrochemical activity of carbon steel and is revealed due to preferential dissolution of ferrite in the steel microstructure – through the formation of a porous network at the steel surface. Each of these layers play a fundamental role in the uniform and localized corrosion of the underlying carbon steel.

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Impact of Fe3O4 on the Performance of an Imidazolinium-Based Inhibitor for Mitigation of CO2 Corrosion of Carbon Steel

Product Number: 51323-19072-SG

Author: Maria Serenario, Bernardo Santos, Xi Wang, David Young, Marc Singer, Maalek Mohamed-Said, Alysson Helton Santos Bueno

Publication Date: 2023

$20.00

Among the techniques disseminated in the industry to protect carbon steel pipelines against internal corrosion, the use of corrosion inhibitors (CIs) is one of the most common. Organic compounds containing nitrogen are commonly employed in the petroleum industry to decrease corrosion rates. The high inhibition efficiency can be attributed to adsorption capacity on the metallic surface, creating a protective film that interferes with the electrochemical reactions involved in the corrosion processes.

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Investigation of Amorphous Deposits and Potential Corrosion Mechanisms in Offshore Water Injection Systems

Product Number: 51317--9433-SG

ISBN: 9433 2017 CP

Author: Violette Eroini

Publication Date: 2017

$20.00

This paper reviews current observations from the offshore oil fields and presents the potential biotic and abiotic mechanisms to magnetite formation.

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Modified magnetite surface layers on carbon steel in aqueous CO2 environments

Product Number: 51323-19127-SG

Author: Joshua Owen, Richard Barker, Francois Ropital, Gaurav R. Joshi, Jean Kittel, Robert Jacklin, Danny Burkle, Erlend Straume, Sigrún Nanna Karlsdóttir

Publication Date: 2023

$20.00

Surface layers often form on carbon steel surfaces in carbon dioxide (CO2) saturated environments and under certain conditions can offer corrosion protection to the underlying steel. One such layer, magnetite (Fe3O4) is a semiconductor, having a reported electrical resistivity of the order of 10-2 to 10-1 Ω∙cm and band gap of 0.1 eV. The conductive properties of Fe3O4 are of significant importance when understanding the corrosion behaviour of carbon steel, as Fe3O4 can readily establish a galvanic couple with the steel surface upon which it has formed.

Products tagged with 'magnetite'

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