| 几种不锈钢和镍在高温碱液中的腐蚀行为 |
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| 引用本文： | 殷华敏,李国明,陈珊,刘亚强,孟令岽.几种不锈钢和镍在高温碱液中的腐蚀行为[J].装备环境工程,2017,14(1):9-13. |
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| 作者姓名： | 殷华敏 李国明 陈珊 刘亚强 孟令岽 |
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| 作者单位： | 海军工程大学理学院材料科学与工程系,武汉,430033 |
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| 摘 要： | 目的为了减少制碱设备在碱液蒸发浓缩阶段发生的严重腐蚀。方法采用静浸泡、电化学稳态极化测试技术、光学显微镜和扫描电镜(SEM)观察,以及XRD,XPS腐蚀产物分析等试验方法,研究几种材料(26-1,30-2,18-8Ti和Ni)在高温高浓碱液中的腐蚀行为。结果在150℃、50%Na OH的碱液中,加入NaClO_3会使18-8Ti的耐蚀性提高,却使镍的耐蚀性降低。只有碱液中NaClO_3含量适量时(如0.15%NaClO_3),才能使26-1和30-2和耐蚀性提高,NaClO_3含量过多或过少,均使26-1和30-2耐蚀性降低。结论 Cl–的加入能够降低镍和18-8Ti和耐蚀性,而使30-2的耐蚀性提高,与18-8Ti相比,26-1和30-2的耐蚀性有着显著的提高。
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| 关 键 词： | 不锈钢 镍 高温碱液 腐蚀 |
| 收稿时间： | 2016/8/19 0:00:00 |
| 修稿时间： | 2017/1/15 0:00:00 |
Corrosion Behaviors of Several Kinds of Stainless Steel and Nickel in High Temperature Alkali Solutions |
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| YIN Hua-min,LI Guo-ming,CHEN Shan,LIU Ya-qiang and MENG Ling-dong.Corrosion Behaviors of Several Kinds of Stainless Steel and Nickel in High Temperature Alkali Solutions[J].Equipment Environmental Engineering,2017,14(1):9-13. |
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| Authors: | YIN Hua-min LI Guo-ming CHEN Shan LIU Ya-qiang and MENG Ling-dong |
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| Institution: | Materials Science and Engineering, College of Science, Naval University of Engineering, Wuhan 430033, China,Materials Science and Engineering, College of Science, Naval University of Engineering, Wuhan 430033, China,Materials Science and Engineering, College of Science, Naval University of Engineering, Wuhan 430033, China,Materials Science and Engineering, College of Science, Naval University of Engineering, Wuhan 430033, China and Materials Science and Engineering, College of Science, Naval University of Engineering, Wuhan 430033, China |
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| Abstract: | Objective To reduce severe corrosion of alkali production equipment in evaporation and concentration of alkali solution.Methods Static immersion,electrochemical static polarization measurement technology,optical microscope and scanning electron microscope were used for observation.Test methods such as XRD,XPS corrosion product analysis,etc.were used to analyze corrosion behaviors of several kinds of materials (26-1,30-2,18-8Ti and Ni) in high temperature and high concentration alkali solution.Results The corrosion resistance of 18-8Ti would increase if NaClO3 was added to 50％NaOH at 150 ℃.But the corrosion resistance was nickel decreased.The corrosion resistance of 26-1 and 30-2 would increase only if NaClO3 in alkali solution is proper (0.15％NaClO3 for example);otherwise,the corrosion resistance of 26-1 and 30-2 would decrease.Conclusion Adding Cl-increases corrosion resistance of nickel and 18-8Ti,and thus increases the corrosion resistance of 30-2.Compared with 18-8Ti,the corrosion resistance of 26-1 and 30-2 increases more apparently. |
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| Keywords: | stainless steel nickel high temperature alkali solution corrosion |
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