| 混凝土孔隙液中Cl-浓度对304不锈钢亚稳态点蚀的影响 |
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| 引用本文： | 刘欣怡,赵亚州,张欢,陈莉. 混凝土孔隙液中Cl-浓度对304不锈钢亚稳态点蚀的影响[J]. 中国腐蚀与防护学报, 2021, 0(2): 195-201 |
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| 作者姓名： | 刘欣怡 赵亚州 张欢 陈莉 |
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| 作者单位： | 河海大学海岸灾害及防护教育部重点实验室;河海大学港口海岸与近海工程学院 |
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| 基金项目： | 中央高校基本科研业务费专项资金(B200203003)。 |
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| 摘 要： | 通过动电位极化和恒电位极化研究了C1浓度对304不锈钢在模拟混凝土孔隙液(pH 12.6)中亚稳态点蚀的影响,并利用极值统计分布研究了亚稳态点蚀的峰值电流密度(Ipeak),亚稳态点蚀半径(rpit),亚稳态点蚀稳定性乘积(Ipeak·rpit)以及单个亚稳态点蚀的生长时间(tgrow),再钝化时间(trep),生长率...
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| 关 键 词： | 亚稳态点蚀 动电位极化 恒电位极化 304不锈钢 |
Effect of Chloride Concentration in a Simulated Concrete Pore Solution on Metastable Pitting of 304 Stainless Steel |
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| LIU Xinyi,ZHAO Yazhou,ZHANG Huan,CHEN Li. Effect of Chloride Concentration in a Simulated Concrete Pore Solution on Metastable Pitting of 304 Stainless Steel[J]. Journal of Chinese Society For Corrosion and Protection, 2021, 0(2): 195-201 |
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| Authors: | LIU Xinyi ZHAO Yazhou ZHANG Huan CHEN Li |
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| Affiliation: | (Key Laboratory of Coastal Disaster and Defence of Ministry of Education,Hohai University,Nanjing 210098,China;College of Harbour,Coastal and Offshore Engineering,Hohai University,Nanjing 210098,China) |
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| Abstract: | The influence of chloride concentration on metastable pitting of 304 stainless steel in a simulated concrete pore solution(pH 12.6) was investigated via potentiodynamic polarization and potentiostatic polarization measurement.The peak current density(Ipeak), metastable pit radius(rpit), pit stability product(lpeak·rpit),and growth time(tgrow), as well as the repassivation time(trep),growth rate(Kgrow) and repassivation rate(Krep) of individual metastable pits were studied by means of the extreme value statistics distribution method.The results revealed that the probability of transition from metastable pitting to stable pitting for 304 stainless steel might increase with the increasing chloride concentration in the simulated concrete pore solution. |
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| Keywords: | metastable pitting potentiodynamic polarization potentiostatic polarization 304 stainless steel |
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