In this study, enamel-coated steel pipe samples with various levels of cathodic protection were tested to investigate their impedance models by electrochemical impedance spectroscopy (EIS).
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The paper discusses “past” developments, “present” status, and “future” advancements of inspection, monitoring, and modelling technologies.
Metallurgical investigations on a welded sample of 25% Cr super duplex stainless steel (UNS S32750) from a vessel that had operated above 300-350°C (570-660°F) for six months, resulting in brittle fracture.
Galvanic coupling corrosion risk between connection bolt materials and ASTM A1010 structural steel. ASTM A1010 has recently emerged for the construction of more corrosion-resistant bridges.
Builds upon a previous study that compared the corrosion resistance of multiple corrosion resistant alloys in several simulated (marine exhaust) scrubber environments.
Successful trials on enhancing gas well threshold velocity beyond those recommended by API RP 14E.
The effect of gas-liquid flow and inhibitor concentration on corrosion of carbon steel was evaluated by laboratory experiment.
A developed monitoring approach confirmed that the EN-based electrochemical surveillance can detect changes in a petrochemical plant that otherwise could lead to catastrophic failure.
Specimens of 12Cr martensitic stainless were annealed, tempered and shot-peened – then artificially pitted. Through a variety of tests, it was determined that the advantages of shot-peening are mostly retained after pitting.
The electrochemical behavior of UNS(1) N08031 was investigated as a function of electrode potential in Green-Death(2) solution at 40 °C.
Pitting corrosion of these steels in a high-temperature, high-CO2, low-H2S, and high-Cl- environment was investigated by scanning electron microscope (SEM), energy dispersive detector (EDS) and X-ray diffraction (XRD).
Ferrite measurements are used during welding procedures on duplex stainless steel. We studied the effects on the measured ferrite contents of (1) grid size, (2) number of fields and (3) measurement locations.