海洋微生物在船舶用结构钢表面附着成膜过程及其腐蚀研究

doi:10.3969/j.issn.1001-909X.2015.01.006

海洋学研究 ›› 2015, Vol. 33 ›› Issue (1): 39-44.DOI: 10.3969/j.issn.1001-909X.2015.01.006

海洋微生物在船舶用结构钢表面附着成膜过程及其腐蚀研究

董耀华, 贺中意, 郭娜, 刘涛, 董丽华^*

上海海事大学海洋科学与工程学院,上海 201306

收稿日期:2014-10-24 修回日期:2014-12-10 出版日期:2015-03-15 发布日期:2022-11-25
通讯作者: *董丽华(1964-),女,教授,主要从事海洋与船舶工程方面的研究。E-mail:lhdong@shmtu.edu.cn
作者简介:董耀华(1983-),男,湖北潜江市人,博士,讲师,主要从事海洋与船舶工程方面的研究。E-mail:yhdong@shmtu.edu.cn
基金资助:
国家重点基础研究发展计划(973计划)资助(2014CB643306);上海自然科学基金项目资助(14ZR1419800)

The formation process of biofilm of marine microorganism and the influence on the corrosion of the ship structural steel

DONG Yao-hua, HE Zhong-yi, GUO Na, LIU Tao, DONG Li-hua^*

The Institute for Marine Materials Science and Engineering,Shanghai Maritime University, Shanghai 201306, China

Received:2014-10-24 Revised:2014-12-10 Online:2015-03-15 Published:2022-11-25

摘要/Abstract

摘要： 通过紫外分光光度计测定了海洋微生物需钠弧菌 Vibrio natriegens 的生长曲线,通过扫描电镜和原子力显微镜观测了该细菌在船舶用结构钢(DH32)钢样表面成膜过程及试样腐蚀形貌,探讨了生物膜的形成过程及其对材料表面腐蚀的影响。结果表明,生物膜的形成过程与微生物生命活动关系密切。根据对比暴露在菌液和无菌培养基中的试样表面形貌,发现细菌的附着及成膜过程的不均匀性,改变了DH32钢样表面的物理和化学状态。细菌附着区与周围形成的氧浓差电池,以及细菌新陈代谢主要产物对金属离子的络合,共同促进了试样局部腐蚀加速。

关键词: 海洋微生物, 生物膜, 腐蚀

Abstract: In order to study the influence of the formation of biofilm on the corrosion of DH32 structural steel, the growth curve of a marine microorganism (Vibrio natriegens) was tested by UV-Vis spectra, the formation process of biofilm and the surface of the coupons were characterized by scanning electron microscope and atomic force microscope, respectively. The results show that the formation of biofilm closely associates with the growth of bacteria, the formation process of biofilm changes the chemical and physical state of the steel surface. Moreover, the formation of oxygen concentration cell and binding power of extracellular polymeric substances with metal ions greatly promotes the DH32 surface oxidation corrosion.

Key words: marine microorganism, biofilm, corrosion

中图分类号:

董耀华, 贺中意, 郭娜, 刘涛, 董丽华. 海洋微生物在船舶用结构钢表面附着成膜过程及其腐蚀研究[J]. 海洋学研究, 2015, 33(1): 39-44.

DONG Yao-hua, HE Zhong-yi, GUO Na, LIU Tao, DONG Li-hua. The formation process of biofilm of marine microorganism and the influence on the corrosion of the ship structural steel[J]. Journal of Marine Sciences, 2015, 33(1): 39-44.

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海洋微生物在船舶用结构钢表面附着成膜过程及其腐蚀研究

The formation process of biofilm of marine microorganism and the influence on the corrosion of the ship structural steel

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