... chloride and low dissolved oxygen (DO) brines. Tests have been performed for various temperatures and ammonium chloride (NH₄Cl) concentrations. The susceptibility to SCC was assessed in terms of ductility loss, detailed fractography, and cross-sectional inspections to identify the damage...

... of trace amounts of O_2(aq), ⁵ it is essential to investigate the effects of oxygen in detail. ⁵ Overall, the effect of the presence of dissolved oxygen on a sour corrosion system can be divided into three aspects: (1) oxygen can be directly reduced on the steel surface...

... ^‡ Corresponding author. E-mail: [email protected] . MetCorr, 100 Fillmore Street, Suite 500, Denver 80206, Colorado. 20 August 2020 21 December 2020 21 December 2020 © 2021, NACE International 2021 chloride oxygen pitting pitting factor seawater stainless steels T he...

... conducted for two FeCrAl alloys (APMT and C26M) in typical simulated boiling water reactor conditions at 288°C containing either dissolved hydrogen or oxygen. Crack propagation studies showed that both ferritic FeCrAl alloys were resistant to SCC at stress intensities below 40 MPa√m. Current results...

... dioxide carbon steel localized corrosion oxygen sulfur dioxide supercritical environment Carbon capture and storage (CCS) technique has been universally recognized as one of the potential and practical ways to reduce global carbon emission from the use of fossil fuels. Large volumes...

...-mail: [email protected] . ^*Institute of Functional Surfaces, School of Mechanical Engineering, University of Leeds, Leeds, LS2 9JT, United Kingdom. 30 9 2014 26 11 2014 26 11 2014 © 2015 NACE International 2015 carbon capture and storage carbon steel oxygen...

...Liu Cao; G.S. Frankel; N. Sridhar It is known that dissolved oxygen promotes stress corrosion cracking (SCC) of carbon steel in fuel-grade ethanol. The effects of oxygen on ethanol SCC were investigated using controlled-potential tests in deaerated simulated fuel-grade ethanol (SFGE...

... was observed in the subsequent exposure periods, i.e., N₂, H₂S, mixed gas (H₂S and O₂ with a volumetric ratio of 5:1) exposure period, when compared to the blank. © 2012 NACE International 2012 corrosion localized corrosion oxidized sulfur species oxygen...

...Y.-S. Choi; D. Duan; S. Nešić; F. Vitse; S.A. Bedell; C. Worley The objective of the present study was to evaluate the corrosion properties of carbon steel in MDEA/H₂O/CO₂/O₂/HSS (methyldiethanolamine/water/carbon dioxide/oxygen/heat stable salts) mixtures related...

... the performance of the inhibitors at very high flow velocities; the jet flow velocity was varied in the range from 0.5 m/s to 20 m/s. Methods for characterization of mass transfer and calculation of wall shear stress are described. To assess how dissolved oxygen (O₂) biased the test results...

... measurements of dissolved oxygen concentrations in a solution stream circulating in a closed loop through a tubular reactor containing the corroding specimen, and accessories to help intermittent oxygenation of the solution. The results showed that the corrosion process in distilled water followed first-order...

... conditions. The effect of flow, dissolved oxygen, and the type of ion on the critical ion concentration was also investigated. The value under flowing conditions using a jet-in-slit testing apparatus was lower, 500 ppm. However, the values for a solution saturated with nitrogen and a solution containing...

...N. Sridhar; K. Price; J. Buckingham; J. Dante This paper presents the results of a study on the effects of water, acetic acid (CH₃COOH), oxygen, corrosion inhibitor, chloride, methanol (CH₃OH), denaturant, and corrosion product on the stress corrosion cracking (SCC) of steel...

... component at maximum load, a crack growth rate of 0.4 mm/y is estimated. Under constant load for the same environment no crack growth occurred at exposure times up to 9 months but a temporary uncontrolled increase in oxygen and chloride for just 1 h was sufficient to induce crack growth with rates as high...

...E. Gulbrandsen; J. Kvarekvål; H. Miland The effect of oxygen (O₂) contamination on the inhibition of carbon dioxide (CO₂) corrosion was studied using carbon steel rotating cylinder electrodes (RCE). The test conditions were 40°C, 1 bar CO₂, pH 5.5, and 1 wt% sodium...

... emphasis on the determination of the effects of bulk levels of pH, chlorides, and oxygen, at constant crevice geometry frequently applied in experimental work with a remote crevice assembly (RCA). As a result, increasing chloride contents, bulk oxygen levels, and decreasing pH reduce the calculated...

...A.A. Efimov; L.N. Moskvin; O.Yu. Pykhteev Oxide film formation on the surface of carbon steels during contact with solutions of reagents such as oxygen, hydrogen peroxide (H₂O₂), hydrazine-hydrate (N₂H₄·H₂O), ammonium acetate...

...F.M. Song; D.A. Jones; D.W. Kirk The objective of this work was to develop a model to describe pipeline corrosion within a disc-shaped crevice in the presence of oxygen (O₂). The model results from modification of the pipeline crevice corrosion model (PCCM) previously developed...

... potential to a more negative value while consuming the oxygen diffusing to the pipe surface as well as the hydrogen ions that dissociate from carbonic acid (H₂CO₃). This decrease of corrosion rate is greatest near the free corrosion potential and becomes less as the potential...

... in an alkaline chloride solution and that in a neutral chloride solution. For practical crevice corrosion in alkaline chloride solutions, the achievable crevice corrosion current would be strongly affected by the reduced kinetics of oxygen reduction at high pH. For solutions with pH ≥ 13, natural aeration...