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This paper discusses how precipitation of scales and corrosion products on the pipe surface along with other influencing factors contributed to the initiation of pits and finally failure of a wet gas pipeline in a sweet gas field, south of Iran.
Exposure tests were performed at normal and high pressure where CO2 is supercritical or in dense phase. The focus was set on the corrosion process of condensate as drops on the surface of carbon steels in CO2 with impurities at 278 K
This paper attempts to compare the critical pitting temperature (CPT) for alloys when ASTM G150 is not applicable. By using MgCl2 as electrolyte, the boiling point is increased and the measuring zone for CPT is broader.
Corrosion behaviors on carbon steel - in presence of sulfate reducing bacteria (SRB) - were studied via weight loss methods and electrochemical tests including polarization curve and EIS measurements.
Round-Robin tests on electrochemical noise between 2014 and 2017 showed that only very few commercial potentiostats can perform valid EN measurements. This paper is aimed at guiding users by providing the minimum knowledge for EN measurements
In this work, both planar electrode and 1-dimensional (1D) artificial pit experiments were performed The effects of deposit chemistry and morphology on the electrochemical dissolution behavior are discussed in terms of a transport-controlled model for pit propagation.
Critical pitting temperature (CPT) for UNS S31266 was compared to UNS S31254 with the newly developed electrochemical method, modified ASTMG150 developed by K. Lund et al., using 3M magnesium chloride (MgCl2) instead of 1M sodium chloride (NaCl).
This paper explores four specific modes of failure. 1. The dezincification of brass. 2. Problems that plague galvanized pipe. 3. Graphitization of cast iron. 4. Pitting corrosion of stainless steel due to effects of manganese.
To evaluate the effect of annealing temperature on microstructure, hardness, and pitting corrosion of an UNS S32304 lean duplex stainless steel, using a light optical microscope and cyclic potentiodynamic polarization electrochemical measurements.
Passive layer stability and breakdown, metastable pitting and stable pit growth in stainless steels. Also, the benefits and challenges of using electrochemical noise for studying localized corrosion of stainless steels.
Localized corrosion of solubilized and thermally aged alloys UNS N06690 and N06600, used in nuclear power plant steam generator tubing, was studied in simulated wet lay-up conditions.