| Corrosion Behavior of X52 Anti-H_2S Pipeline Steel Exposed to High H_2S Concentration Solutions at 90 ℃ | |
| Alternative Title | Corrosion Behavior of X52 Anti-H_2S Pipeline Steel Exposed to High H_2S Concentration Solutions at 90 ℃ |
| Liu Meng; Wang Jianqiu; Ke Wei; Han Enhou | |
| 2014 | |
| Source Publication | Journal of Materials Science & Technology
 |
| ISSN | 1005-0302 |
| Volume | 30Issue:5Pages:504-510 |
| Abstract | Initial corrosion kinetics of X52 anti-H_2S pipeline steel exposed to 90 ℃/1.61 MPa H_2S solutions was investigated through high temperature and high pressure immersion tests. Corrosion rates were obtained based on weight loss calculation. The corrosion products were analyzed by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and electron probe micro-analysis (EPMA). The initial corrosion kinetics was found to obey the exponential law. With increasing immersion time, the main corrosion products changed from iron-rich mackinawite to sulfur-rich pyrrhotite. The corrosion films had two layers: an inner fine-grained layer rich in iron and an outer columnar-grained layer rich in sulfur. The corrosion film formed through the combination of outward diffusion of Fe~(2+) ions and inward diffusion of HS~- ions. The variation of the corrosion products and compaction of the corrosion layer resulted in a decrease in the diffusion coefficient with increasing immersion time. The double-layered corrosion film formed after long time immersion acted as an effective barrier against diffusion. |
| Other Abstract | Initial corrosion kinetics of X52 anti-H_2S pipeline steel exposed to 90 ℃/1.61 MPa H_2S solutions was investigated through high temperature and high pressure immersion tests. Corrosion rates were obtained based on weight loss calculation. The corrosion products were analyzed by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and electron probe micro-analysis (EPMA). The initial corrosion kinetics was found to obey the exponential law. With increasing immersion time, the main corrosion products changed from iron-rich mackinawite to sulfur-rich pyrrhotite. The corrosion films had two layers: an inner fine-grained layer rich in iron and an outer columnar-grained layer rich in sulfur. The corrosion film formed through the combination of outward diffusion of Fe~(2+) ions and inward diffusion of HS~- ions. The variation of the corrosion products and compaction of the corrosion layer resulted in a decrease in the diffusion coefficient with increasing immersion time. The double-layered corrosion film formed after long time immersion acted as an effective barrier against diffusion. |
| Keyword | H_2S corrosion X52 anti-H_2S pipeline steel High temperature Iron sulfide |
| Indexed By | CSCD |
| Language | 英语 |
| CSCD ID | CSCD:5148739 |
| Citation statistics |
Cited Times:9[CSCD]
[CSCD Record]
|
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/86952 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Liu Meng,Wang Jianqiu,Ke Wei,et al. Corrosion Behavior of X52 Anti-H_2S Pipeline Steel Exposed to High H_2S Concentration Solutions at 90 ℃[J]. Journal of Materials Science & Technology,2014,30(5):504-510. |
| APA | Liu Meng,Wang Jianqiu,Ke Wei,&Han Enhou.(2014).Corrosion Behavior of X52 Anti-H_2S Pipeline Steel Exposed to High H_2S Concentration Solutions at 90 ℃.Journal of Materials Science & Technology,30(5),504-510. |
| MLA | Liu Meng,et al."Corrosion Behavior of X52 Anti-H_2S Pipeline Steel Exposed to High H_2S Concentration Solutions at 90 ℃".Journal of Materials Science & Technology 30.5(2014):504-510. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment