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The issue of induced AC current corrosion and its mitigation for buried pipelines continues. A review of the design methods and mitigation technologies used in the past, and those recently developed and continue to evolve, to meet the AC mitigation challenges faced by buried pipeline operators.
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In a previous investigation, AC corrosion rate data from weight loss experiments was compared with the results from a model for AC corrosion developed using a modified Butler-Volmer approach. In the present work, an extension of this is presented to investigate the influence of scale formation on AC corrosion rates.
This study demonstrates that the mechanisms of microbiologically influenced corrosion (MIC) by Desulfovibrio vulgaris, a sulfate reducing bacterium (SRB), against X65 carbon steel and pure copper belong to two different types of MIC.
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.
The gas carrier terminal project is located on the Yamal peninsula on the Arctic Ocean. This quantitative study was to collect field data to define a corrosion protection system for carbon steel submerged structure and to forecast the related corrosion risks.
Black powder is a generic term used to describe entrained corrosion products that can accumulate in sales gas pipelines. This study was to evaluate the efficiency of model inhibitor compounds.
The objective of the present study was to evaluate the effect of alloying elements (Cr, Mo and Cu) on the corrosion behavior of low carbon steel in CO2 environments. Six samples were prepared with varying Cr content from 0 to 2 wt.% and with added 0.5 wt.% of Mo and Cu.
The influence of elastic strain on general corrosion and metastable pitting is investigated for steels through in-situ test setup. Results from electrochemical tests on specimens with different amounts of in-situ elastic strain.
The IDDP-1 well was the hottest flowing geothermal well in the world ~ 450 °C and 140 bar superheated steam that contained corrosive dissolved gases, H2S, CO2, H2, HCl and HF. The well had to be closed. Steel samples from down-hole were analyzed.
The role of solution and reaction time on properties of the scales formed on carbon steel in sour environments is discussed: dynamic phase-changes are found to occur, and nanostructure formation emerges during film growth.
Very different corrosion behavior was observed between adjacent welds. This paper describes the investigation to identify the corrosion mechanism, trying to understand the influence of filler metal composition and welding parameters.
Corrosion behavior of carbon steel in an in-house solvent was investigated in a pilot-scale post combustion CO2 capture process. Carbon steel specimens were placed where corrosion problems were previously found in the stripper column and the CO2-rich amine piping.