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Petroleum Science >2021,??lssue 1:??- DOI: https://doi.org/10.1007/s12182-020-00532-z

Effect of anodic dissolution and passivation on X80 steel in NaHCO3 solution Open?Access

文章信息

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作者：Lai-Shun Yang & Chao Yang
作者單位：

  1. College of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China

    Lai-Shun Yang

  2. Technology Inspection Center of Shengli Oilfield, SINOPEC, Dongying, 257000, Shandong, China

    Chao Yang

  3. China University of Petroleum (East China), Qingdao, 266580, Shandong, China

    Lai-Shun Yang & Chao Yang


投稿時(shí)間：2020-11-1
引用方式：Yang, LS., Yang, C. Effect of anodic dissolution and passivation on X80 steel in NaHCO3 solution. Pet. Sci. (2020). https://doi.org/10.1007/s12182-020-00532-z

文章摘要

The effects of extreme stray current on the anodic dissolution and passivation of X80 steel in NaHCO3 solution were investigated using measurements of polarization curves and EIS, AFM and SEM techniques. Under the interference of anodic current (i?=?0~200 A/m2), main constituents of corrosion products of X80 steel were FeO(OH) and Fe3O4. A double-layer film formed at i?=?100 A/m2, in which FeOOH was in outer and Fe3O4 lied in inner. The formation mechanism of Fe3O4 was confirmed and described by the electrochemical reaction in various regions on anodic potentiodynamic polarization curve.

關(guān)鍵詞

    Anodic current ;Passivation ;X80 steel; Fe3O4 ;Near-neutral solution