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2507双相不锈钢在SO2污染模拟海水中的腐蚀行为

朱敏 朱涛 陈明 郭绍义 袁永锋 俞高红 聂轮

朱敏, 朱涛, 陈明, 郭绍义, 袁永锋, 俞高红, 聂轮. 2507双相不锈钢在SO2污染模拟海水中的腐蚀行为[J]. 工程科学学报, 2018, 40(5): 587-593. doi: 10.13374/j.issn2095-9389.2018.05.009
引用本文: 朱敏, 朱涛, 陈明, 郭绍义, 袁永锋, 俞高红, 聂轮. 2507双相不锈钢在SO2污染模拟海水中的腐蚀行为[J]. 工程科学学报, 2018, 40(5): 587-593. doi: 10.13374/j.issn2095-9389.2018.05.009
ZHU Min, ZHU Tao, CHEN Ming, GUO Shao-yi, YUAN Yong-feng, YU Gao-hong, NIE Lun. Corrosion behavior of 2507 duplex stainless steel in simulated SO2-Polluted seawater[J]. Chinese Journal of Engineering, 2018, 40(5): 587-593. doi: 10.13374/j.issn2095-9389.2018.05.009
Citation: ZHU Min, ZHU Tao, CHEN Ming, GUO Shao-yi, YUAN Yong-feng, YU Gao-hong, NIE Lun. Corrosion behavior of 2507 duplex stainless steel in simulated SO2-Polluted seawater[J]. Chinese Journal of Engineering, 2018, 40(5): 587-593. doi: 10.13374/j.issn2095-9389.2018.05.009

2507双相不锈钢在SO2污染模拟海水中的腐蚀行为

doi: 10.13374/j.issn2095-9389.2018.05.009
基金项目: 

国家自然科学基金资助项目(51501164)

中国博士后科学基金资助项目(2017M621974)

浙江省自然科学基金资助项目(LY18E010004)

详细信息
  • 中图分类号: TG172.5

Corrosion behavior of 2507 duplex stainless steel in simulated SO2-Polluted seawater

  • 摘要: 采用开路电位、电化学阻抗谱(EIS)、Mott-Schottky曲线和浸泡腐蚀实验研究了2507双相不锈钢在含不同浓度(0,0.001和0.01 mol·L-1)NaHSO3模拟海水中的腐蚀行为. 研究表明:开路电位随NaHSO3浓度的增加而负移,腐蚀倾向增大;电荷转移电阻Rt随浓度的增加而减小,耐蚀性降低;2507不锈钢的腐蚀形态为局部腐蚀,点蚀程度随浓度升高有所加剧,腐蚀速率随浓度的增加而增大;Mott-Schottky曲线和成膜后电化学阻抗谱测试表明,NaHSO3的加入增加了2507不锈钢表面钝化膜的点缺陷浓度,降低了钝化膜的稳定性,电荷转移阻力减小,腐蚀更容易发生. 这可能归因于NaHSO3的加入增加了模拟海水的酸度,并随NaHSO3浓度的增加促进了不锈钢表面钝化膜的破坏.
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出版历程
  • 收稿日期:  2017-08-01

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