| 碳含量和浸泡时间对碳钢热带自然海水腐蚀产物中细菌组成的影响 |
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| 引用本文： | 杨雨辉,肖伟龙,柴柯,吴进怡. 碳含量和浸泡时间对碳钢热带自然海水腐蚀产物中细菌组成的影响[J]. 中国腐蚀与防护学报, 2011, 0(4) |
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| 作者姓名： | 杨雨辉 肖伟龙 柴柯 吴进怡 |
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| 作者单位： | 海南大学材料与化工学院海南优势资源化工材料应用技术教育部重点实验室;海南大学农学院; |
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| 基金项目： | 国家自然科学基金项目(50761004); 海南省自然科学基金项目(510204,511112); 海南大学2009科研项目(hd09xm77)资助 |
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| 摘 要： | 为了深入探讨海洋微生物对碳钢的腐蚀机理,通过细菌的分离鉴定方法,研究了不同碳含量碳钢在自然海水中浸泡不同时问后腐蚀产物中的细菌组成。结果表明不同碳钢每克表面刮取物中需氧菌及兼性厌氧菌的数量均在浸泡时间为91d时达最大值,而硫酸盐还原菌的数量在浸泡时间为184d时达最大值。铁细菌和硫细菌的变化不明显。不同碳钢,除7d实验周期外,随碳含量增加,腐蚀产物中需氧菌及兼性厌氧菌有增加趋势,而硫酸盐还原菌却存在降低趋势。需氧菌及兼性厌氧菌主要由两个菌属的细菌组成,即假单胞菌属和弧菌属,当浸泡时间达1a时,还出现大量黄杆菌。从各个菌属所占比例可见,碳钢腐蚀产物中菌群初期主要由需氧菌组成,随着浸泡时间延长,兼性厌氧菌开始占据主要地位。铁细菌主要是由瑙曼氏菌属和鞘铁菌属组成。不同细菌在生长过程中对氧的需求与消耗及代谢产物的差异,会对碳钢的腐蚀过程产生不同的影响。
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| 关 键 词： | 碳钢 腐蚀产物 细菌 海水 |
COMPOSITION OF BACTERIA IN CORROSION PRODUCT OF CARBON STEEL WITH DIFFERENT CARBON CONTENT IMMERSED IN SEAWATER FOR DIFFERENT TIME |
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| YANG Yuhui,XIAO Weilong,CHAI Ke,WU Jinyi .Key Laboratory of Ministry of Education for Application Technology of Chemical Materials in Hainan Superior Resources,Material , Chemical Engineering College,Hainan University,Haikou : .Agricultural College.Hainan University,Haikou. COMPOSITION OF BACTERIA IN CORROSION PRODUCT OF CARBON STEEL WITH DIFFERENT CARBON CONTENT IMMERSED IN SEAWATER FOR DIFFERENT TIME[J]. Journal of Chinese Society For Corrosion and Protection, 2011, 0(4) |
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| Authors: | YANG Yuhui XIAO Weilong CHAI Ke WU Jinyi .Key Laboratory of Ministry of Education for Application Technology of Chemical Materials in Hainan Superior Resources Material Chemical Engineering College Hainan University Haikou : .Agricultural College.Hainan University Haikou |
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| Affiliation: | YANG Yuhui~(1,2),XIAO Weilong~1,CHAI Ke~1,WU Jinyi~1 1.Key Laboratory of Ministry of Education for Application Technology of Chemical Materials in Hainan Superior Resources,Material and Chemical Engineering College,Hainan University,Haikou 570228: 2.Agricultural College.Hainan University,Haikou 570228 |
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| Abstract: | Bacterial adhesion and biofilm formation on the surface of carbon steel are common in seawater. The heterogeneous biofilm and the associated bacteria form complex biological systems that impact the physical and chemical characters of the metal/biofilm interface,such as pH,dissolved oxygen,chloride and sulfate,etc., and change the corrosion mechanism of carbon steel.Accordingly,it is important to investigate the bacteria composition in the corrosion product of carbon steel.In this work,the bacteria compositi... |
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| Keywords: | carbon steel corrosion product bacteria seawater |
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