LAPSE:2023.5123
Published Article
LAPSE:2023.5123
Electrochemical Study of Stainless Steel Anchor Bolt Corrosion Initiation in Corrosive Underground Water
February 23, 2023
Abstract
Application of low-nickel stainless steel anchor was one of the economical and effective methods to solve the durability problem of slope engineering. At present, there are scarce reports about corrosion characteristics of low-nickel stainless steel in various underground waters. For investigating the corrosion initiation of stainless steel anchor bolt in corrosive underground water, the effect of SO42−, HCO3− and pH value on the corrosion behavior of 201 low-nickel stainless steel was studied via electrochemical methods. As the SO42− concentration, HCO3− concentration or pH value increase, the open circuit potential and polarization resistance increase, while the double-layer capacitance, donor density and passive current density decrease. The results indicate that corrosion is inhibited by SO42−, HCO3− and OH− in underground water. In addition, the inhibitive efficiency of SO42− and HCO3− increases with the SO42− and HCO3− concentration.
Application of low-nickel stainless steel anchor was one of the economical and effective methods to solve the durability problem of slope engineering. At present, there are scarce reports about corrosion characteristics of low-nickel stainless steel in various underground waters. For investigating the corrosion initiation of stainless steel anchor bolt in corrosive underground water, the effect of SO42−, HCO3− and pH value on the corrosion behavior of 201 low-nickel stainless steel was studied via electrochemical methods. As the SO42− concentration, HCO3− concentration or pH value increase, the open circuit potential and polarization resistance increase, while the double-layer capacitance, donor density and passive current density decrease. The results indicate that corrosion is inhibited by SO42−, HCO3− and OH− in underground water. In addition, the inhibitive efficiency of SO42− and HCO3− increases with the SO42− and HCO3− concentration.
Record ID
Keywords
corrosion, low-nickel stainless steel, passive film, underground water
Subject
Suggested Citation
Ma F, Zeng Q, Lu X, Wu T, Lu X, Zhang T, Feng X. Electrochemical Study of Stainless Steel Anchor Bolt Corrosion Initiation in Corrosive Underground Water. (2023). LAPSE:2023.5123
Author Affiliations
Ma F: Guoneng Dadu River Hydropower Development Co., Ltd., No. 7 Tianyun Road, High-Tech Zone, Chengdu 610041, China; Department of Water Resources and Hydropower Engineering, Tsinghua University, Beijing 100084, China
Zeng Q: Tianfu Jingrong Center, Sichuan Energy Internet Research Institute, Tsinghua University, Building No. 5th, District A, Science City of Chengdu, Chengdu 610042, China
Lu X: College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China
Wu T: College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China
Lu X: College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China
Zhang T: College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China
Feng X: College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China
Zeng Q: Tianfu Jingrong Center, Sichuan Energy Internet Research Institute, Tsinghua University, Building No. 5th, District A, Science City of Chengdu, Chengdu 610042, China
Lu X: College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China
Wu T: College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China
Lu X: College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China
Zhang T: College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China
Feng X: College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China
Journal Name
Processes
Volume
9
Issue
9
First Page
1553
Year
2021
Publication Date
2021-08-30
ISSN
2227-9717
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Original Submission
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PII: pr9091553, Publication Type: Journal Article
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LAPSE:2023.5123
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https://doi.org/10.3390/pr9091553
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Feb 23, 2023
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