| pH与温度对2205DSS在盐卤中的孔蚀行为影响研究 |
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| 引用本文： | 龚敏,蒋伟,曾宪光,李伟清.pH与温度对2205DSS在盐卤中的孔蚀行为影响研究[J].腐蚀科学与防护技术,2009,21(1):28-32. |
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| 作者姓名： | 龚敏 蒋伟 曾宪光 李伟清 |
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| 作者单位： | 四川理工学院,材料与化学工程系,自贡,643000 |
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| 摘 要： | 利用电化学方法、交流阻抗技术、失重法及金相显微术研究了pH与温度变化对2205DSS在盐卤中耐孔蚀行为的影响.结果表明：随着卤水pH值的增大，2205DSS耐孔蚀性能先略微增强、然后减弱;根据实际制盐工艺条件，卤水的pH值应适当控制在8.7或8.8以内；随温度升高，2205DSS基体抵抗孔蚀能力明显下降；试样在盐卤水介质中的电极反应是不可逆的，其腐蚀反应既受活化极化控制，又受溶液扩散控制.
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| 关 键 词： | 盐卤 孔蚀 pH 温度 金相显微镜 |
| 收稿时间： | 2007-09-11 |
| 修稿时间： | 2007-11-02 |
INFLUENCE OF pH AND TEMPERATURE ON PITTING CORROSION OF 2205DSS IN BITTERN |
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| GONG Min,JIANG Wei,ZENG Xian-guang,LI Wei-qing.INFLUENCE OF pH AND TEMPERATURE ON PITTING CORROSION OF 2205DSS IN BITTERN[J].Corrosion Science and Protection Technology,2009,21(1):28-32. |
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| Authors: | GONG Min JIANG Wei ZENG Xian-guang LI Wei-qing |
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| Affiliation: | School of Material and Chemical Engineering;Sichuan University of Science and Engineering |
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| Abstract: | The influence of pH value and temperature on the resistance to pitting corrosion of stainless steel 2205DSS in bittern was investigated by means of electrochemical methods and electrochemical impedance spectra in this paper.The weight-loss data for 2205DSS in bittern solution were measured in the solutions.Pitting corrosion images were observed by metalloscope and the surface roughness was analyzed.The results showed that the resistance to pitting corrosion for 2205DSS in bittern solution was enhanced sligh... |
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| Keywords: | pH |
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