| 海水中硫酸盐还原菌对09Cr2AlMoRE钢的腐蚀行为 |
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| 引用本文： | 梁成浩,黄乃宝,王华.海水中硫酸盐还原菌对09Cr2AlMoRE钢的腐蚀行为[J].大连海事大学学报(自然科学版),2010(1). |
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| 作者姓名： | 梁成浩 黄乃宝 王华 |
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| 作者单位： | 大连海事大学交通与物流工程学院;大连理工大学化工学院; |
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| 摘 要： | 采用动极化曲线、电化学交流阻抗谱(EIS)等电化学测试技术和化学浸泡法研究海水中硫酸盐还原菌(SRB)对09-Cr2AlMoRE钢的腐蚀行为.结果表明,SRB新陈代谢产物S2-与腐蚀产物Fe2+反应生成硫化铁,促进了09Cr2AlMoRE钢的阳极活性溶解.09Cr2AlMoRE钢的腐蚀产物呈絮状,颗粒粗大、疏松,分布不连续;杆状硫酸盐还原菌在钢表面局部富集、附着,细菌通过细胞外高聚物被腐蚀产物所包裹.09-Cr2AlMoRE钢在接菌海水中的腐蚀产物由FeS构成,其中硫元素含量高达8.29%.膜沉积处的FeS与附近的09-Cr2AlMoRE钢表面组成腐蚀电偶电池,而SRB的作用在于不断提供H2S以维持FeS的电化学活性,从而加速腐蚀.
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| 关 键 词： | 海水 硫酸盐还原菌（SRB） 09Cr2AlMoRE钢 腐蚀 |
Corrosion behavior of 09Cr2AlMoRE steel in seawater with sulfate-reducing bacteria |
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| LIANG Cheng-hao,HUANG Nai-bao,WANG Hua.Corrosion behavior of 09Cr2AlMoRE steel in seawater with sulfate-reducing bacteria[J].Journal of Dalian Maritime University,2010(1). |
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| Authors: | LIANG Cheng-hao HUANG Nai-bao WANG Hua |
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| Institution: | 1.Transportation & Logistics Engineering College;Dalian Maritime University;Dalian 116026;China;2.School of Chemical Engineering;Dalian University of Technology;Dalian 116012;China |
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| Abstract: | Electrochemical techniques such as potentiodynamic polarization,electrochemical impedance spectroscopy(EIS),etc.,and chemical immersion method were used to analyze the corrosion behavior of sulfate-reducing bacteria(SRB) on 09Cr2AlMoRE steel in seawater.Results indicate that S2-,which is the metabolite of SRB,reacts with Fe2+ to produce FeS,which can accelerate the anodic active dissolution of the 09Cr2AlMoRE steel.The loose corrosion products discontinuously distribute over the surface of 09Cr2AlMoRE steel... |
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| Keywords: | seawater sulfate-reducing bacteria(SRB) 09Cr2AlMoRE steel corrosion |
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