D01:10.13374j.isml00103x.2009.0B.B6 第31卷第3期 北京科技大学学报 Vol.31 No.3 2009年3月 Journal of University of Science and Technology Beijing Mar.2009 低碳贝氏体钢在三种典型环境中的腐蚀行为和腐蚀产 物 崔雷 杨善武王树涛高克玮柳伟贺信莱 北京科技大学材料科学与工程学院。北京100083 摘要通过干湿循环加速腐蚀实验并结合X射线衍射、扫描电镜、能谱分析和N,吸附等方法研究了低碳贝氏体钢在用相 应溶液模拟的三种大气环境（海洋、工业和海洋工业大气）中加速腐蚀行为和腐蚀产物特征.实验结果表明.低碳贝氏体钢在 三种环境中的腐蚀速率均低于商业化耐候钢09 CuPCrNi..低碳贝氏体钢在上述三种环境中的腐蚀速率也有较大差别，其在含 有复合腐蚀因子(C厂和S0)的环境中腐蚀最为严重，而在只含腐蚀因子S0的环境中腐蚀程度最轻.在不同环境中形成 的腐蚀产物相组成差别很小，但锈层致密程度相差较大并且锈层越致密，对应的钢腐蚀速率越低.在三种环境中的腐蚀对钢 的拉伸力学性能的影响较小，说明没有产生严重的局部腐蚀 关键词低碳贝氏体钢：大气环境：腐蚀行为：腐蚀产物 分类号TG172.3 Corrosion behavior and corrosion products of a low carbon bainite steel in three kinds of typical environments CUI Lei.YANG Shan-wu,WANG Shu-tao,GAO Ke-wei,LIU Wei.HE Xin-lai School of Materials Science and Engimeering.University of Science and Technology Beiing,Beijng 100083 China ABSTRACT Wet-dry cyclic accelerated corrosion tests together with XRD.SEM,EDS and N2 adsorption technology were employed to investigate the corrosion behavior and corrosion products of a low carbon bainite steel.The steel was subjected to three kinds of at- mospheric environments i.e.marine environment.industrial environment and marine industrial environment which were simulated by corresponding solutions.It is found that the corrosion rates of the low carbon bainite stee are lower than that of the commercial weathering steel 09CuPCrNi in all the three kinds of environments The corosion rates of the bainite steelin the three kinds of envi- ronments are also different.In the environment containing both CI and SO the corrosion is the most serious w hile in the envirom ment only containing SO3 the corrosion is the lightest.The distinction of corrosion products in the three kinds of environments is ne- glectable while the compact degree of nust layers formed in different envimnments is obviously different.The more compact the rust layer is the lower corrosion rate the steel ex hibits.There is no serious selective corrosion in the bainite steel for the corosion has little effect on its tensile mechanical properties. KEY WORDS low carbon bainite steel atmospheric environment:corrosion behavior;cormsion products 钢的大气腐蚀问题存在于国民经济的各个领 别加以研究.因此耐候钢的开发和对其耐候性的评 域它给社会带来了巨大的经济损失和环境危害. 价应该和其服役的环境条件结合起来考虑，有针对 随着工业化程度的提高，大气污染也日益严重，污染 性地研发在不同环境中使用的特定耐候钢.我国幅 物引起的腐蚀问题受到了人们越来越多的关注.不 员辽阔，大气环境更是各有特征：沿海城市所处大气 同的大气环境中钢的腐蚀行为往往也不同，需要分 中盐分含量高，其中C厂溶解于钢表面的液膜，能增 收稿日期：2008-06-04 基金项目：国家重点基础研究发展计划资助项目(No.2004CB619102) 作者简介：崔雷(1983一)，男.硕士研究生：杨普武(1963一)，男，教授博士，E-mail:yangshanw u@master.ustb.adu.m低碳贝氏体钢在三种典型环境中的腐蚀行为和腐蚀产 物 崔 雷 杨善武 王树涛 高克玮 柳 伟 贺信莱 北京科技大学材料科学与工程学院, 北京 100083 摘 要 通过干湿循环加速腐蚀实验并结合 X 射线衍射、扫描电镜、能谱分析和 N2 吸附等方法, 研究了低碳贝氏体钢在用相 应溶液模拟的三种大气环境(海洋、工业和海洋工业大气)中加速腐蚀行为和腐蚀产物特征.实验结果表明, 低碳贝氏体钢在 三种环境中的腐蚀速率均低于商业化耐候钢 09CuPCrNi .低碳贝氏体钢在上述三种环境中的腐蚀速率也有较大差别, 其在含 有复合腐蚀因子(Cl -和 SO 2 - 3 )的环境中腐蚀最为严重, 而在只含腐蚀因子 SO 2 - 3 的环境中腐蚀程度最轻.在不同环境中形成 的腐蚀产物相组成差别很小, 但锈层致密程度相差较大, 并且锈层越致密, 对应的钢腐蚀速率越低.在三种环境中的腐蚀对钢 的拉伸力学性能的影响较小, 说明没有产生严重的局部腐蚀. 关键词 低碳贝氏体钢;大气环境;腐蚀行为;腐蚀产物 分类号 TG172.3 Corrosion behavior and corrosion products of a low carbon bainite steel in three kinds of typical environments CUI Lei , YANG Shan-wu , WANG Shu-tao , GAO Ke-wei , LIU Wei , HE Xin-lai S chool of Materials S cience and Engineering , Universit y of Science and Technology Beijing , Beijing 100083 , China ABSTRACT Wet-dry cyclic accelerated corrosion tests to gether with XRD, SEM , EDS and N2 adsorption technolo gy were employed to investigate the co rrosion behavio r and corrosion products of a low carbon bainite steel.The steel was subjected to three kinds of at￾mospheric environments, i.e.marine environment , industrial environment and marine industrial environment, which were simulated by corresponding so lutions.It is found that the corrosion ra tes of the low carbon bainite steel are lower than that of the commercial w eathering steel 09CuPCrNi in all the three kinds of environments.The corro sion ra tes of the bainite steel in the three kinds of envi￾ronments are also different .In the environment containing bo th Cl - and SO 2 - 3 the corrosio n is the most serious, w hile in the enviro n￾ment o nly containing SO 2 - 3 the corrosion is the lightest .The distinction of corrosion productsin the three kinds of environments is ne￾glectable , while the compact deg ree of rust layers formed in different enviro nments is obviously different .The more compact the rust lay er is, the lower corrosion rate the steel ex hibits .There is no serious selective co rrosion in the bainite steel for the corro sion has little effect on its tensile mechanical properties . KEY WORDS low carbon bainite steel;atmospheric environment ;corrosio n behavior;corro sion products 收稿日期:2008-06-04 基金项目:国家重点基础研究发展计划资助项目(No .2004CB619102) 作者简介:崔 雷(1983—), 男, 硕士研究生;杨善武(1963—), 男, 教授, 博士, E-mail:yangshanw u@master .ustb.edu.cn 钢的大气腐蚀问题存在于国民经济的各个领 域,它给社会带来了巨大的经济损失和环境危害 . 随着工业化程度的提高, 大气污染也日益严重 ,污染 物引起的腐蚀问题受到了人们越来越多的关注 .不 同的大气环境中钢的腐蚀行为往往也不同, 需要分 别加以研究 .因此耐候钢的开发和对其耐候性的评 价应该和其服役的环境条件结合起来考虑 ,有针对 性地研发在不同环境中使用的特定耐候钢 .我国幅 员辽阔 ,大气环境更是各有特征 :沿海城市所处大气 中盐分含量高,其中 Cl -溶解于钢表面的液膜 , 能增 第 31 卷 第 3 期 2009 年 3 月 北 京 科 技 大 学 学 报 Journal of University of Science and Technology Beijing Vol .31 No.3 Mar.2009 DOI :10.13374/j .issn1001 -053x.2009.03.036