| Influence of NaCl Deposition on Atmospheric Corrosion of A3 Steel |
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| 引用本文： | Qing QU,Chuanwei YAN,Lei ZHANG,Ye WAN and Chunan CAO1) State Key Laboratory for Corrosion and Protection,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China2) Chemistry Department,Yunnan University,Kunming 650091,China3) School of Chemical Science and Engineering,Liaoning University,Shenyang 110036,China. Influence of NaCl Deposition on Atmospheric Corrosion of A3 Steel[J]. 材料科学技术学报, 2002, 18(6) |
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| 作者姓名： | Qing QU Chuanwei YAN Lei ZHANG Ye WAN and Chunan CAO1) State Key Laboratory for Corrosion and Protection Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China2) Chemistry Department Yunnan University Kunming 650091 China3) School of Chemical Science and Engineering Liaoning University Shenyang 110036 China |
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| 作者单位： | Qing QU，Chuanwei YAN，Lei ZHANG，Ye WAN and Chunan CAO1) State Key Laboratory for Corrosion and Protection，Institute of Metal Research，Chinese Academy of Sciences，Shenyang 110016，China2) Chemistry Department，Yunnan University，Kunming 650091，China3) School of Chemical Science and Engineering，Liaoning University，Shenyang 110036，China |
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| 基金项目： | This work was financially supported by the National Natural Science Foundation of China. The number of the project is 5989914. The authors are grateful to Ms. Ping Wan for English diction. |
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| 摘 要： | Regularity of the initial atmospheric corrosion of A3 steel in the presence of NaCI was investigated. The results showed that NaCI can accelerate the corrosion of A3 steel. Dry mass gain of A3 steel in the presence of NaCI deposition increases with the exposure time, which can be correlated by using exponential decay function. The relationship between dry mass gain and amount of NaCI deposition at a certain exposure time follows a quadratic function. More amount of NaCI deposition will slow down the corrosion rate to some extent after exposure for a certain time. SEM/EDAX was used to characterize the corrosion surface and products. The surfaces of the NaCI treated A3 steel were obviously uneven, and some tiny crevices appear in the corrosion products that could help O2 transmit to the inner layer. The amount of oxygen in atomic percentage in the corrosion products increases with the amount of NaCI deposition.
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Influence of NaCl Deposition on Atmospheric Corrosion of A3 Steel |
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| Qing QU,Chuanwei YAN,Lei ZHANG,Ye WAN,Chunan CAO. Influence of NaCl Deposition on Atmospheric Corrosion of A3 Steel[J]. Journal of Materials Science & Technology, 2002, 18(6) |
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| Authors: | Qing QU Chuanwei YAN Lei ZHANG Ye WAN Chunan CAO |
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| Abstract: | Regularity of the initial atmospheric corrosion of A3 steel in the presence of NaCI was investigated. The results showed that NaCI can accelerate the corrosion of A3 steel. Dry mass gain of A3 steel in the presence of NaCI deposition increases with the exposure time, which can be correlated by using exponential decay function. The relationship between dry mass gain and amount of NaCI deposition at a certain exposure time follows a quadratic function. More amount of NaCI deposition will slow down the corrosion rate to some extent after exposure for a certain time. SEM/EDAX was used to characterize the corrosion surface and products. The surfaces of the NaCI treated A3 steel were obviously uneven, and some tiny crevices appear in the corrosion products that could help O2 transmit to the inner layer. The amount of oxygen in atomic percentage in the corrosion products increases with the amount of NaCI deposition. |
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| Keywords: | A3 steel Atmospheric corrosion Corrosion NaCl |
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