采用微生物分析、电化学测试、扫描电镜观察及表面能谱分析等方法,研究了316L不锈钢在硫酸盐还原菌(Sulfate-Reducing Bacteria,SRB)与铁氧化菌(Iron-Oxidizing Bacteria,IOB)共同作用的溶液中的腐蚀电化学行为,分析了炼油厂冷却水系统中微生物腐蚀的特征及机制.结果表明,不锈钢电极在SRB与IOB相结合的溶液中的自腐蚀电位、点蚀电位和再钝化电位均随浸泡时间的增加而负移,其滞后环增大;在SRB与IOB共同作用的溶液中的腐蚀速率大于在无菌溶液中;显微观察表明生物膜疏松多孔,生物膜内细菌的生长代谢活动促使不锈钢表面的钝化膜层腐蚀破坏程度增加,在SRB与IOB共同作用下316L不锈钢电极发生了严重的点蚀.
参考文献
| [1] | Rao T S;Sairam T N;Viswamathan B;Nair K V K .Carbon steel corrosion by iron oxidising and sulphate reducing bacteria in a freshwater cooling system[J].Corrosion Science,2000,42(08):1417. |
| [2] | Federal Highway Administration.Corrosion cost and preventive strategies in the United States[M].New York:Plenum Press,2002 |
| [3] | Adibi N .Environmentally acceptable methods control pipeline corrosion at lower cost[J].Materials Performance,1997,36(02):71-75. |
| [4] | Costerton J W;LeWandowski Z;Caldwell D E .Influence of the microbial content of different precursory nuclei on the anaerobic granulation dynamics[J].Annual Review of Microbiology,1995,49(05):711. |
| [5] | Dexter S C;Duquette D J;Siebert O W;Videla H A .The inhibition of corrosion of S30403 stainless steel by a naturally occurring catecholic polymer[J].Corrosion,1991,47(04):308. |
| [6] | Kh. M. Ismail;A. Jayaraman;T. K. Wood;J. C. Earthman .The influence of bacteria on the passive film stability of 304 stainless steel[J].Electrochimica Acta,1999(26):4685-4692. |
| [7] | Werner S E;Johnson C A;Laycock N J et al.Pitting of type 304 stainless steel in the presence of a biofilm containing sulphate reducing bacteria[J].Corrosion Science,1998,40(03):465. |
| [8] | Jeana Starosvetsky;Robert Armon;Alex Groysman;David Starosvetsky .Fouling of carbon steel heat exchanger caused by iron bacteria[J].Materials Performance,1999(1):55-61. |
| [9] | Rao T S;Eswaran M S;Venugopalan V P.Pitting corrosion of titanium by a freshwater strain of sulphate reducing bacteria[J].BIOFOULING,1993(06):245. |
| [10] | David Straosvetsky;Robert Armon;Josef Yahalom .Pitting corrosion of carbon steel caused by iron bacteria[J].International Biodeterioration and Biodegradation,2001,47:79-87. |
| [11] | I. G. Chamritski;G. R. Burns;B. J. Webster;N. J. Laycock .Effect of Iron-Oxidizing Bacteria on Pitting of Stainless Steel[J].Corrosion: The Journal of Science and Engineering,2004(7):658-669. |
| [12] | M. F. de Romero;Z. Duque;O.T. de Rincon .Microbiological Corrosion: Hydrogen Permeation and Sulfate-Reducing Bacteria[J].Corrosion: The Journal of Science and Engineering,2002(5):429-435. |
| [13] | B. J. Pitonzo;P. Castro;P. S. Amy .Microbiologically Influenced Corrosion Capability of Bacteria Isolated from Yucca Mountain[J].Corrosion: The Journal of Science and Engineering,2004(1):64-74. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%