Corrosion Behavior of X52 Anti-H_2S Pipeline Steel Exposed to High H_2S Concentration Solutions at 90 ℃

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	Corrosion Behavior of X52 Anti-H_2S Pipeline Steel Exposed to High H_2S Concentration Solutions at 90 ℃
其他题名	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
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	30 期号:5 页码:504-510
摘要	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.
其他摘要	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.
关键词	H_2S corrosion X52 anti-H_2S pipeline steel High temperature Iron sulfide
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:5148739
引用统计	被引频次：9[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/86952
专题	中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 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.