| 温度对316L不锈钢耐海水腐蚀性能的影响 |
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| 引用本文： | 郎丰军,阮伟慧,李谋成,沈嘉年.温度对316L不锈钢耐海水腐蚀性能的影响[J].腐蚀科学与防护技术,2012,24(1):61-64. |
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| 作者姓名： | 郎丰军 阮伟慧 李谋成 沈嘉年 |
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| 作者单位： | 上海大学 材料研究所, 上海 200072 |
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| 摘 要： | 运用临界点蚀温度(CPT)、环状阳极极化曲线和电化学阻抗谱等方法研究了不同温度下316L不锈钢的海水腐蚀行为. 结果表明, 晶粒尺寸不同的两种316L不锈钢的CPT基本相同; 随着海水温度升高, 点蚀电位和再钝化电位均呈线性降低, 但是细晶钢的点蚀性能下降更大, 85℃时粗晶钢比细晶钢的点蚀电位约高60 mV. 与粗晶钢相比, 细晶钢在65℃下形成的钝化膜微缺陷更多, 且点蚀诱导时间较短.
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| 关 键 词： | 不锈钢 点蚀 临界点蚀温度 环状阳极极化 海水淡化 |
| 收稿时间： | 2010-09-07 |
| 修稿时间： | 2010-10-25 |
Influence of Temperature on Corrosion of 316L Stainless Steel in Seawater |
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| LANG Feng-jun,RUAN Wei-hui,LI Mou-cheng,SHEN Jia-nian.Influence of Temperature on Corrosion of 316L Stainless Steel in Seawater[J].Corrosion Science and Protection Technology,2012,24(1):61-64. |
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| Authors: | LANG Feng-jun RUAN Wei-hui LI Mou-cheng SHEN Jia-nian |
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| Affiliation: | Institute of Materials, Shanghai University, Shanghai 200072 |
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| Abstract: | The corrosion behavior of 316L stainless steel in seawater was investigated by measurements of critical pitting temperature,cyclic anodic polarization and electrochemical impedance spectroscopy under different temperature.The results indicated that two 316L specimens with different grain size showed similar critical pitting temperature.The increase of seawater temperature led to the linear decrease of pitting potential and repassivation potential.The pitting resistance of the fine grain steel decreased larger than that of coarse grain steel with temperature increasing, the latter had a higher pitting potential about 60 mV at 85℃.Compared with the coarse grain steel,the surface of passive film formed on the fine grain steel showed more defects and thereby which showed a shorter incubation time of pitting corrosion at 65℃. |
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| Keywords: | stainless steel pitting critical pitting temperature cyclic anodic polarization desalination of seawater |
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