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Effect of extremely aggressive environment on the nature of corrosion scales of HP-13Cr stainless steel
Li, Xuanpeng; Zhao, Yang; Qi, Wenlong; Xie, Junfeng; Wang, Jidong; Liu, Bin; Zeng, Guanxin; Zhang, Tao; Wang, Fuhui
2019-03-01
Source PublicationAPPLIED SURFACE SCIENCE
ISSN0169-4332
Volume469Pages:146-161
AbstractThe nature of corrosion scales formed on HP-13Cr stainless steel (HP-13Cr SS) in the extremely aggressive environment was investigated by means of microstructure characterization and high-temperature-high-pressure electrochemical measurements. The results of these studies indicated that the precipitation of Cr(OH)(3) is the dominating factor affecting on the formation of corrosion scales, and its effect can be categorized based on two compromising aspects. On the one hand, Cr(OH)(3) precipitation contributed to the increase of scales thickness. On the other hand, it inhibited the precipitation of FeCO3 due to the hydrolysis of Cr3+. Because of these reasons, the corrosion scales undergo significant microstructural changes, i. e., from monolayer (95 degrees C/2.8 MPa) to bilayer (120 degrees C/3.2 MPa and 150 degrees C/3.6 MPa), then to single layer (180 degrees C/3.8 MPa). Therefore, the corrosion-resistance performance of corrosion scales decreased with increasing temperature and CO2 pressure, wherein the decreasing pitting potential and repassivation potential accompanied with the increasing density and diffusivity of acceptor in the scales.
KeywordHP-13Cr stainless steel TEM XPS CO2 corrosion Corrosion scales
Indexed BySCI
Language英语
WOS IDWOS:000454617200019
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81339
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Li, Xuanpeng,Zhao, Yang,Qi, Wenlong,et al. Effect of extremely aggressive environment on the nature of corrosion scales of HP-13Cr stainless steel[J]. APPLIED SURFACE SCIENCE,2019,469:146-161.
APA Li, Xuanpeng.,Zhao, Yang.,Qi, Wenlong.,Xie, Junfeng.,Wang, Jidong.,...&Wang, Fuhui.(2019).Effect of extremely aggressive environment on the nature of corrosion scales of HP-13Cr stainless steel.APPLIED SURFACE SCIENCE,469,146-161.
MLA Li, Xuanpeng,et al."Effect of extremely aggressive environment on the nature of corrosion scales of HP-13Cr stainless steel".APPLIED SURFACE SCIENCE 469(2019):146-161.
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