| Q235-Fe电偶对中的纯铁在高温浓硫酸中的腐蚀研究 |
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| 引用本文： | 周勇,熊金平,陆正良.Q235-Fe电偶对中的纯铁在高温浓硫酸中的腐蚀研究[J].金属制品,2011,37(2):25-28. |
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| 作者姓名： | 周勇 熊金平 陆正良 |
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| 作者单位： | 1. 北京化工大学材料科学与工程学院,北京,100029
2. 钢铁研究总院,北京,100081 |
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| 摘 要： | 研究高温环境中质量分数为98%的浓H2SO4对工业纯铁的腐蚀行为。在实验室模拟实际工况,采用金相、SEM和EDS分析,XRD化学成分分析和电化学测试等方法,得出结论:(1)Q235-Fe电偶对中的阳极工业纯铁在90℃质量分数为98%浓H2SO4中的腐蚀产物主要有Fe,O,S和S i元素,而其相组成主要是Fe2O3,FeS,FeSO4和Fe2(SO4)3;(2)在90℃、质量分数为98%浓H2SO4中,当工业纯铁和Q235钢组成面积比为1∶1的电偶对时,电偶腐蚀效应达到2,即工业纯铁的腐蚀速率增大了1倍。
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| 关 键 词： | 工业纯铁 电偶腐蚀 浓硫酸 电化学 |
Corrosion research of pure iron in Q235-Fe galvanic couple in high temperature concentrated sulfuric acid |
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| ZHOU Yong,XIONG Jin-ping,LU Zheng-liang.Corrosion research of pure iron in Q235-Fe galvanic couple in high temperature concentrated sulfuric acid[J].Steel Wire Products,2011,37(2):25-28. |
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| Authors: | ZHOU Yong XIONG Jin-ping LU Zheng-liang |
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| Affiliation: | ZHOU Yong1,XIONG Jin-ping1,LU Zheng-liang2(1.College of Material Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China,2.Central Iron & Steel Research Institute,Beijing 100081,China) |
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| Abstract: | To research the corrosion of concentrated sulfuric acid of mass fraction 98% to industrial pure iron under high-temperature.To imitate real working condition in the lab,and get below conclusion by metallographic analysis,SEM and EDS analysis,XRD chemical composition analysis and electrochemical test：（1） The corrosion products of Q235-Fe galvanic couple in concentrated sulfuric acid of mass fraction 98% is Fe,O,S,Si,and their compositions are Fe2O3,FeS,FeSO4,and Fe2（SO4）3;（2） Mass fraction 98% H2SO4 in 90℃,when industrial pure iron and Q235 steel composition area tatio is 1∶1 galvanic couple,the galvanic couple corrosion reaches to 2,ie,industrial pure iron＇s corrosion speed has been doubled. |
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| Keywords: | industrial pure iron galvanic couple corrosion concentrated sulfuric acid electrochemistry |
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