| SO24-对304不锈钢在含氯循环水中腐蚀的影响 |
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| 引用本文： | 秦会敏,郦和生,谢文州,杨玉.SO24-对304不锈钢在含氯循环水中腐蚀的影响[J].石油化工腐蚀与防护,2012,29(6):39-42. |
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| 作者姓名： | 秦会敏 郦和生 谢文州 杨玉 |
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| 作者单位： | 中国石化北京北化院燕山分院,北京,102500 |
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| 摘 要： | 采用电化学法、扫描电镜和能谱分析法研究了SO42-对304不锈钢在含氯循环水中腐蚀的影响.动电位扫描试验结果表明,SO42-在Cl-浓度低时可有效抑制点蚀,而在Cl-浓度高时不能有效抑制点蚀.扫描电镜和能谱分析结果表明在Cl-浓度较高时,SO42-对Cl-的排斥作用已经不足以阻止Cl-在不锈钢表面的吸附,此时SO42-不能有效抑制Cl-的腐蚀作用.
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| 关 键 词： | 循环水 304不锈钢 点蚀 SO42- |
Impact of SO42- on Corrosion of 304 Stainless Steel in Cooling Water Containing Cl- |
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| Qin Huimin
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Li Hesheng
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Xie Wenzhou
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Yang Yu.Impact of SO42- on Corrosion of 304 Stainless Steel in Cooling Water Containing Cl-[J].Petrochemical Corrosion and Protection,2012,29(6):39-42. |
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| Authors: | Qin Huimin Li Hesheng Xie Wenzhou Yang Yu |
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| Affiliation: | (Yanshan Branch,SINOPEC Beijing Research Institute of Chemical Industry,Beijing 102500,China) |
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| Abstract: | The impact of SO4 2- on the corrosion of 304 stainless steel in cooling water containing CI- is studied by electrochemistry, scanning electron microscope （ SEM ） and energy dispersive spectrometry （EDS）. The results of dynamic potential scamfing show that the pitting con＇osion can be effectively inhibited by SO4 2- in low Cl- solution, but the inhibition effect will disappear in high Cl- solution. The analysis by SEM and EDS indicate that the repel effect SO4 2- against Cl- is not high enough to preveut the adsorption of Cl- on the surface of 304 stainless steel. The corrosion of Cl- can not be effectively inhibited by SO4 2- . |
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| Keywords: | cooling water 304 stainless steel pitting corrosion SO4 2- |
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