应用丝束电极研究阻锈剂对孔溶液中钢筋局部腐蚀的抑制能力
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- 论文作者：石维 ; 董泽华 ; 朱涛 ; 郭兴蓬
- 年：2010
- 作者机构：华中科技大学化学与化工学院;
- 论文关键词：丝束电极 ; 混凝土孔溶液 ; 缓蚀机理 ; 局部腐蚀
- 会议召开时间：2010-07-28
- 会议录名称：第十六届全国缓蚀剂学术讨论会论文集
- 语种：中文
- 分类号：TU528
- 学会代码：ZGHA
- 会议名称：第十六届全国缓蚀剂学术讨论及应用技术经验交流会
- 会议地点：中国上海
- 主办单位：中国腐蚀与防护学会缓蚀剂专业委员会
- 学会名称：中国腐蚀与防护学会缓蚀剂专业委员会
- 页数：4
- 文件大小：739k
- 原文格式：O
- 会议级别：全国
摘要
应用丝束电极的电位/电流扫描法,研究了混凝土模拟孔溶液中Q345B碳钢局部腐蚀在空间和时间上的发生和发展特征。针对不同阶段的局部腐蚀,比较了四乙烯五胺和亚硝酸盐缓蚀剂对丝束电极表面局部腐蚀区的修复能力。结果表明,NO_2~-离子能快速渗透到腐蚀产物层下而抑制局部腐蚀发展,而乙烯胺缓蚀剂由于在腐蚀产物层内渗透速率低,初期反而会促进局部腐蚀发展。结合电化学阻抗谱(EIS)测量,发现EIS只反映缓蚀剂对电极表面全面腐蚀的阻滞能力,而不能反映腐蚀的不均匀性。本工作还提出了采用LEI指数来对局部腐蚀进行量化的方法。
引文
[1]Tan Y J,Aung N N,Liu T.Novel corrosion experiments using the wire beam electrode.(Ⅰ)Studying electrochemical noise signatures from localised corrosion processes[J].Corrosion Science,2006,48(1):23-38.
[2]Tan Y J.An experimental comparison of three wire beam electrode based methods for determining corrosion rates and patterns[J].Corrosion Science,2005,47(7):1653-1665.
[3]翁永基,赵海燕.用丝束电极(WBE)评价不锈钢在NaCl溶液中点蚀敏感性[J].中国腐蚀与防护学报,2003,23(6):326-329.
[4]董泽华,郭兴蓬,郑家燊,等.用丝束电极研究16Mn钢的缝隙腐蚀行为[J].材料保护,2001,34(9):6-7.
[5]董泽华,郭兴蓬,刘宏芳,等.用丝束电极研究SRB微生物诱导腐蚀的电化学特征[J].中国腐蚀与防护学报,2002,22(1):48-53.
[6]Loulizi A,Al-Qadi I L,Diefenderfer B K.Effects of nitrite-based corrosion inhibitor on concrete's rapid chloride permeability values and its dielectric properties[J].Aci Materials Journal,2000,97(4):465-471.
[7]Ngala V T,Page C L,Page M M.Investigations of an ethanolamine-based corrosion inhibitor system for surface treatment of reinforced concrete[J].Materials and Corrosion,2004,55(7):511-519.
[8]Aung N N,Tan Y J.Monitoring pitting-crevice corrosion using the WBE-noise signatures method[J].Materials and Corrosion,2006,57(7):555-561.
[9]Jamil H E,Shriri A,Boulif R,et al.Electrochemical behaviour of amino alcohol-based inhibitors used to control corrosion of reinforcing steel[J].Electrochimica Acta,2004,49(17-18):2753-2760.
[10]Valcarce M B,Vazquez M Carbon steel passivity examined in alkaline solutions:the effect of chloride and nitrite ions[J].Electrochimica Acta,2008,53(15):5007-5015.
[2]Tan Y J.An experimental comparison of three wire beam electrode based methods for determining corrosion rates and patterns[J].Corrosion Science,2005,47(7):1653-1665.
[3]翁永基,赵海燕.用丝束电极(WBE)评价不锈钢在NaCl溶液中点蚀敏感性[J].中国腐蚀与防护学报,2003,23(6):326-329.
[4]董泽华,郭兴蓬,郑家燊,等.用丝束电极研究16Mn钢的缝隙腐蚀行为[J].材料保护,2001,34(9):6-7.
[5]董泽华,郭兴蓬,刘宏芳,等.用丝束电极研究SRB微生物诱导腐蚀的电化学特征[J].中国腐蚀与防护学报,2002,22(1):48-53.
[6]Loulizi A,Al-Qadi I L,Diefenderfer B K.Effects of nitrite-based corrosion inhibitor on concrete's rapid chloride permeability values and its dielectric properties[J].Aci Materials Journal,2000,97(4):465-471.
[7]Ngala V T,Page C L,Page M M.Investigations of an ethanolamine-based corrosion inhibitor system for surface treatment of reinforced concrete[J].Materials and Corrosion,2004,55(7):511-519.
[8]Aung N N,Tan Y J.Monitoring pitting-crevice corrosion using the WBE-noise signatures method[J].Materials and Corrosion,2006,57(7):555-561.
[9]Jamil H E,Shriri A,Boulif R,et al.Electrochemical behaviour of amino alcohol-based inhibitors used to control corrosion of reinforcing steel[J].Electrochimica Acta,2004,49(17-18):2753-2760.
[10]Valcarce M B,Vazquez M Carbon steel passivity examined in alkaline solutions:the effect of chloride and nitrite ions[J].Electrochimica Acta,2008,53(15):5007-5015.