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ZHANG Wenliang, ZHANG Xiaohu, ZHANG Yunan, ZHU Jinyang, ZHANG Lei. Effect of Dissolved Oxygen on H2S Corrosion Behavior of BNS Pipeline Steel[J]. Corrosion & Protection, 2020, 41(8): 6-10. DOI: 10.11973/fsyfh-202008002
Citation: ZHANG Wenliang, ZHANG Xiaohu, ZHANG Yunan, ZHU Jinyang, ZHANG Lei. Effect of Dissolved Oxygen on H2S Corrosion Behavior of BNS Pipeline Steel[J]. Corrosion & Protection, 2020, 41(8): 6-10. DOI: 10.11973/fsyfh-202008002

Effect of Dissolved Oxygen on H2S Corrosion Behavior of BNS Pipeline Steel

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  • Received Date: March 14, 2020
  • Based on a two-stage corrosion immersion test, the effect and mechanism of dissolved oxygen on H2S corrosion behavior of BNS pipeline steel were studied. The results show that in H2S environment, the mixture of oxygen could significantly promote the corrosion of BNS pipeline steel because of the formation of SO42-, S2O32- and elemental sulfur in the reaction between O2 and H2S. Compared with the single H2S environment, the corrosion product on BNS pipeline steel surface in the O2/H2S coexistence environment was much more and looser. The mixture of oxygen increased the localized corrosion sensitivity of BNS pipeline steel, which was contributed to dissolved oxygen, elemental sulfur and S2O32- generated by the reaction between H2S and O2.
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