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It is known that carbon steels in Fuel Grade Ethanol (FGE) has pitting corrosion and active path corrosion-type stress corrosion cracking (SCC) susceptibility. In the current work, susceptibility of pitting and SCC of two types of X52 grade carbon steel were investigated by immersion testing and Slow Strain Rate Testing (SSRT).
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Repeated cyclic potentiodynamic polarization (CPP) measurements were performed in different environments for both carbon steel and Type 304L stainless steel. The effect of different environmental species, nitrite and hydroxide on repassivation/reactivation mechanism of carbon steel is examined.
In-situ electrochemical techniques were used to investigate the effect of sulfate-reducing bacteria specie Desulfovibrio alaskensis AL1 colonization and its metabolic products on carbon steel corrosion. Open circuit potential (OCP) measurements showed a slight potential shift toward more positive values appearing just after microbial inoculations.
This study focuses on a better understanding of significant pitting corrosion on coating surface damaged carbon steels, or low alloy steels, during salt spray testing for automotive applications. Anodic cyclic polarization test was used to evaluate the severity of pitting corrosion, and to estimate the corrosion rate of raw materials.
The corrosive effects of iron monosulfide deposited on carbon steel surfaces were investigated in autoclave experiments. The H2S and CO2 partial pressures were 1 to 20 bar. Temperatures were 10-120 °C. The test solutions consisted of high-salinity brine and low-salinity condensed water. Typical duration was 14 days. Weight loss and localized corrosion data were obtained.
The corrosion process of carbon steel in the presence of silica sand deposit in chloride-containing solution at 30 °C was monitored by use of electrochemical noise (EN). Results demonstrated that electrochemical noise with recurrence quantification analysis is useful for monitoring localized under deposit corrosion.
Aging mechanisms - including general corrosion, pitting/crevice corrosion, galvanic corrosion, microbiologically influenced corrosion, stress corrosion cracking (SCC), creep, fatigue, thermal aging, radiation embrittlement, stress relaxation, and wear - based on literature and operating experience from nuclear and nonnuclear applications.
In this paper, we will present a study that is aimed at understanding the relative rates of reactions between oxidizers and bacteria, iron sulfide, H2S, other oxidizable compounds present in produced waters and the overall impact on metal corrosion.
An investigation into the effect of ppm concentrations of acetic acid on the electrochemical corrosion behavior of API 5L X65 carbon steel in a sour environment. Electrochemical techniques, Linear Polarization Resistance (LPR), Potentiodynamic Polarization and Electrochemical Impedance Spectroscopy (EIS), were used.
The Hanford Site in Richland, WA stores liquid radioactive waste in underground, carbon steel tanks. Electrochemical corrosion testing was performed to determine new limits that optimize the chemistry control, yet are robust enough to inhibit against the possibility of increased concentrations of aggressive species.
A combination of carbon and stainless steel probes and coupons was used to evaluate microbiologically influenced corrosion (MIC) in humid air and determine whether dry storage systems (DSSs) could be affected by MIC during extended storage.