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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 the scale. Further, an experimental equation establishing the relationship between the precipitation rate of the corrosion scale and the exposure time was proposed to quantitatively study the effects of Mg²⁺ and Ca²⁺ on the precipitation rate of the corrosion scale.

SUBMITTER: Yang X

PROVIDER: S-EPMC10420105 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature

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The Corrosion Behavior of X100 Pipeline Steel in a Sodium Chloride Solution Containing Magnesium and Calcium.

Yang Xiaoning X Hao Tiancong T Sun Qingya Q Zhang Zhongwei Z Lin Yuan Y

Materials (Basel, Switzerland) 20230726 15

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 ...[more]

PMID: 37569959

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