Effect of Alternating Current on Corrosion Behavior of X80 Pipeline Steel in Near-Neutral Environment
文献类型：期刊论文
| 作者 | Li Xiaogang; Song Dongdong; Liu Zhiyong; Du Cuiwei; Wan Hongxia |
| 刊名 | ACTA METALLURGICA SINICA
 |
| 出版日期 | 2017 |
| 卷号 | 53期号:5页码:575-582 |
| ISSN号 | 0412-1961 |
| 英文摘要 | The rapid development of energy, electricity, and transportation industries has created a market for steel pipes; however, buried steel pipelines near high-voltage transmission lines and electrified railways often experience alternating current (AC) corrosion at the damaged coating of pipelines; such phenomenon is mostly due to the resistance between the capacitance and inductance coupling, especially for long-distance pipelines in parallel operation. AC corrosion can cause pipeline corrosion perforation and stress corrosion cracking (SCC) in some cases, which has been a vital threat to the pipeline safety. In this work, the influence of AC on corrosion behavior of X80 pipeline steel was investigated in NS4 near-neutral solution by data acquisition technique, electrochemical test, immersion tests and surface analysis techniques. Results show that with the increasing of AC density, corrosion morphology changed from uniform corrosion to localized corrosion with many pits. Under the full AC interference, X80 steel occurred cathodic and anodic polarization which resulted in iron dissolution and hydrogen precipitation. The negative half wave AC would lead to hydrogen evolution and hydrogen induced anodic dissolution, the pits in X80 steel surface present sharp. However, under disturbance of positive half-wave AC, only anodic dissolution occurred and the pitting appeared spill shape and smoothly. Under various AC waveform interference, the corrosion products of X80 steel surface were different. Under full AC wave and positive half-wave interference, the corrosion products were loose, had have no alpha-FeOOH and occurred cracks; however, under negative half-wave AC interference, the corrosion products were denser and contained alpha-FeOOH which has protective effect on substrates. |
| 公开日期 | 2017-12-25 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/13834]  |
| 专题 | 2017专题 |
| 推荐引用方式 GB/T 7714 | Li Xiaogang,Song Dongdong,Liu Zhiyong,et al. Effect of Alternating Current on Corrosion Behavior of X80 Pipeline Steel in Near-Neutral Environment[J]. ACTA METALLURGICA SINICA,2017,53(5):575-582. |
| APA | Li Xiaogang,Song Dongdong,Liu Zhiyong,Du Cuiwei,&Wan Hongxia.(2017).Effect of Alternating Current on Corrosion Behavior of X80 Pipeline Steel in Near-Neutral Environment.ACTA METALLURGICA SINICA,53(5),575-582. |
| MLA | Li Xiaogang,et al."Effect of Alternating Current on Corrosion Behavior of X80 Pipeline Steel in Near-Neutral Environment".ACTA METALLURGICA SINICA 53.5(2017):575-582. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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