2023
DOI: 10.3390/ma16155258
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The Corrosion Behavior of X100 Pipeline Steel in a Sodium Chloride Solution Containing Magnesium and Calcium

Abstract: The influences of Mg2+ and Ca2+ on the short-term (1800 s) corrosion behavior of X100 pipeline steel were investigated in a sodium chloride (NaCl) solution saturated with CO2. Either Ca2+ or Mg2+ in the solution inhibited the short-term corrosion of X100 pipeline steel, with the corrosion current density decreasing from 262.4 μA cm−2 to 163.5 μA cm−2 or 80.8 μA cm−2. During longer-term (8−48 h) immersion, the Mg2+ inhibited the formation of the protective scale, whereas the Ca2+ accelerated the formation of th… Show more

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“…It mostly appears on all kinds of internal metal inhomogeneities (nonmetallic inclusions, discharge, deformations) and external (edges, scratches, dents, residual scale, deposits, etc.). In cases where the metal undergoing corrosion is iron (the main component of steel), the role of the metal causing corrosion is fulfilled by carbon present in the steel in the form of graphite grains or iron carbide [62,63].…”
Section: Analysis Of the Obtained Resultsmentioning
confidence: 99%
“…It mostly appears on all kinds of internal metal inhomogeneities (nonmetallic inclusions, discharge, deformations) and external (edges, scratches, dents, residual scale, deposits, etc.). In cases where the metal undergoing corrosion is iron (the main component of steel), the role of the metal causing corrosion is fulfilled by carbon present in the steel in the form of graphite grains or iron carbide [62,63].…”
Section: Analysis Of the Obtained Resultsmentioning
confidence: 99%