Effects of Cl- and SO42- ions on corrosion behavior of X70 steel
文献类型：期刊论文
| 作者 | J. W. Wu ; X. G. Li ; C. W. Du ; S. Wang ; Y. Q. Song |
| 刊名 | Journal of Materials Science & Technology
 |
| 出版日期 | 2005 |
| 卷号 | 21期号:1页码:28-32 |
| 关键词 | X70 steel chloride ions sulphate ions pitting general corrosion pitting corrosion pipeline steel electrochemical impedance nacl solution pits |
| ISSN号 | 1005-0302 |
| 中文摘要 | Corrosion behaviors of X70 steel were studied by means of electrochemical experiments and morphology observation. First, through potentiodynamic polarization in solution of various Cl- ions concentration, it was found that E-pit began to appear in solution of Cl- concentration above 0.1 mol/L, and there was a critical point of Cl- concentration between 0.05 mol/L and 0.1 mol/L, below which the extent of pitting and general corrosion were trivial, while in solution of Cl- concentration above 0.1 mol/L, general and pitting corrosion became greater as the increasing of Cl- concentration. All of them were confirmed by the SEM observations after anodic polarization. Second, via the potentiodynamic polarization curves of X70 steel in 0.5 mol/L Cl- solution with 0, 0.05, 0.5 and 1 mol/L SO42- ions, it was found SO42- ions were able to inhibit corrosion aroused from Cl- ions, accordingly a model was set up to describe the process. In addition, to further explore the inhibited effect of SO42- ions, EIS was used in solutions of different Cl- and SO42- concentrations, the results revealed that the electrochemical resistance has a relation with the [SO42-]/[Cl-], that was, the bigger the value of [SO42-]/[Cl-], the greater the electrochemical resistance. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35112]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | J. W. Wu,X. G. Li,C. W. Du,et al. Effects of Cl- and SO42- ions on corrosion behavior of X70 steel[J]. Journal of Materials Science & Technology,2005,21(1):28-32. |
| APA | J. W. Wu,X. G. Li,C. W. Du,S. Wang,&Y. Q. Song.(2005).Effects of Cl- and SO42- ions on corrosion behavior of X70 steel.Journal of Materials Science & Technology,21(1),28-32. |
| MLA | J. W. Wu,et al."Effects of Cl- and SO42- ions on corrosion behavior of X70 steel".Journal of Materials Science & Technology 21.1(2005):28-32. |
入库方式： OAI收割
来源：金属研究所
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