Correlation between electrochemical reactions with bare surfaces and corrosion fatigue crack growth in steels |
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| Affiliation: | 1. School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116, China;2. School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China;3. School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou 221116;4. Fasten Group, Jiangyin 214433, China;5. State Key Laboratory of Solid Lubrication, Lanzhou Institute Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;6. Faculty of Technology, University of Brasilia, Brasilia 70910-900, Brazil;1. School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China;2. Nuclear Power Institute of China, Chengdu, Sichuan, 610015, China |
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| Abstract: | The results of this preliminary correlation demonstrate the relationship between electrochemical reactions with bare metal surfaces and CF crack growth for steels in aqueous environments, and is very encouraging. These findings provide further support for the hypothesis of surface/electrochemical react control, and indicate the effectiveness of the in-situ fracture technique in providing unambiguous measurements of bare-surface reaction kinetics. For quantitative modeling, efforts will be needed to provide measurements of current and charge densities, and to address the issue of actual surface areas of cracks. Additional research is in progress and will be reported. |
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