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| Pitting Corrosion Behavior of 304 Stainless Steel in Simulated Concrete Pore Solutions |
GAI Xipeng, LEI Li, CUI Zhongyu( ) |
| School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China |
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Abstract The pitting corrosion behavior of 304 stainless steel in two simulated concrete pore solutions with different chloride ion concentrations was assessed via electrochemical measurement methods and SEM, in terms of the critical chloride ion concentration for pitting initiation and surface morphology before and after test of 304 stainless steel. The results showed that the critical chloride ion concentration of 304 stainless steel determined by potentiodynamic polarization and potentiostatic electrochemical impedance spectrum in saturated Ca(OH)2 and HCO3-/CO32- solutions were basically consistent. The SEM test results also confirmed the above conclusion. The electrochemical impedance acquired form open circuit potential measurement could not reveal the critical chloride concentration.
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Received: 18 November 2020
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| Fund: Basic Scientific Research Operating Expenses of Central Universities(201762008) |
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Corresponding Authors:
CUI Zhongyu
E-mail: cuizhongyu@ouc.edu.cn
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About author: CUI Zhongyu, E-mail: cuizhongyu@ouc.edu.cn
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