首页|Synergistic effect of O2-Cl? on localized corrosion failure of L245N pipeline in CO2-O2-Cl? environment
Synergistic effect of O2-Cl? on localized corrosion failure of L245N pipeline in CO2-O2-Cl? environment
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
? 2022 Elsevier LtdTo enhance the understanding of the corrosion mechanism on rapid perforation failure, the corrosion behavior of L245N with the synergistic effect of O2-Cl? and different Cl? contents in CO2-O2-Cl? environment were studied by weight-loss test and characterization analysis. It showed that the O2 was the dominant factor inducing localized corrosion and the synergistic effect of O2-Cl? in CO2-O2-Cl? environment mainly accounted for the growth of the corrosion, because porous Fe oxides generated by O2 promoted the mass transfer and catalysis of Cl? and Cl? in turn promoted the expansion of localized corrosion pits. The increase of the Cl? under low content enhanced the synergistic effect with O2, while high content of Cl? (3000–5000 mg/L) could reduce the solubility of CO2/O2 and replace the adsorption of corrosive medium and ions on the substrate surface, inhibiting the cathodic process of corrosion reaction.
Cl? contentL245N steelLocalized corrosionPipeline failureSynergistic effect of O2-Cl?
NSTL
Elsevier
