在含硫酸盐还原菌(SRB)的鹰潭、沈阳、大港土壤模拟溶液中进行14 d 的挂片浸泡试验和电化学试验,研究了 X80管线钢在三种土壤模拟溶液中的微生物腐蚀规律。结果表明：X80钢在大港土壤模拟溶液中的腐蚀速率最大,在鹰潭土壤模拟溶液中的最小,SRB和Cl－的共同作用可促进X80钢表面点蚀坑的形成；X80钢在上述三种土壤模拟溶液中的腐蚀过程相同,阴极过程是以氢去极化为主的控制过程,阳极过程为金属溶解,生成黄色疏松的腐蚀产物 FeO(OH),同时Fe2＋与SRB结合生成铁硫化合物；鹰潭土壤的p H 较低,可抑制水解反应；在大港土壤模拟溶液中生成的腐蚀产物中未检测出FeS,这是体系中少量SRB参与氢去极化过程的结果。
Immersion test for 14 days and electrochemical test were carried out in Yingtan,Shenyang and Dagang simulated soil solutions with sulfate-reducing bacteria(SRB),the microbiological corrosion rules of X80 steel in the three simulated soil solutions were studied.The results show that the corrosion rates of X80 steel in Dagang simulated soil solution was maximum,and the corrosion rate in Yingtan simulated soil solution was minimum.The combined action of SRB and Cl- promoted the formation of pits on X80 steel surface.The corrosion process of X80 steel in three simulation soil solutions was the same,the cathodic process was predominantly controlled by hydrogen reduction,the anodic dissolution generated the yellow loose corrosion products FeO(OH), and Fe2+ with SRB produced iron sulfur compounds.The hydrolysis reaction was inhibited in Yingtan soil with a lower pH.Due to the corrosion process was controlled by cathodic reduction,therefore FeS did not detect in corrosion products formed in Dagang simulated soil solution.
参考文献
| [1] | 杨海洋;黄桂桥;张波;韩东锐.实海环境碳钢的微生物腐蚀浅析[J].腐蚀与防护,2012(08):712-714. |
| [2] | Javaherdashti, R..Impact of sulphate-reducing bacteria on the performance of engineering materials[J].Applied Microbiology and Biotechnology,20116(6):1507-1517. |
| [3] | Liu Jianhua;Liang Xin;Li Songmei.Study of Microbiologically Induced Corrosion Action on Al-6Mg-Zr and Al-6Mg-Zr-Sc[J].Journal of Rare Earths,20075(5):609-614. |
| [4] | J.J. Santana Rodriguez;F.J. Santana Hernandez;J.E. Gonzalez Gonzalez.Comparative study of the behaviour of AISI 304 SS in a natural seawater hopper, in sterile media and with SRB using electrochemical techniques and SEM[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,20065(5):1265-1278. |
| [5] | 李付绍;安茂忠;刘光洲;段东霞.硫酸盐还原菌的含硫代谢产物在加速碳钢腐蚀中的作用[J].无机化学学报,2009(1):13-18. |
| [6] | 李霞;陈海燕;李欢园;陈丕茂;秦传新;唐振朝;余景.厌氧微生物对紫铜腐蚀行为的影响[J].腐蚀与防护,2012(09):757-760,764. |
| [7] | 柳伟;赵艳亮;路民旭.SRB和CO2共存环境中X60管线钢腐蚀电化学特征[J].物理化学学报,2008(3):393-399. |
| [8] | 贾思洋;李超;孙成.含硫酸盐还原菌污染土壤中Q235钢的宏电池腐蚀研究[J].腐蚀与防护,2011(12):954-957. |
| [9] | Faisal M. AlAbbas;Charles Williamson;Shaily M. Bhola;John R. Spear;David L. Olson;Brajendra Mishra;Anthony E. Kakpovbia.Microbial Corrosion in Linepipe Steel Under the Influence of a Sulfate-Reducing Consortium Isolated from an Oil Field[J].Journal of Materials Engineering and Performance,201311(11):3517-3529. |
| [10] | Fu-shao Li;Mao-zhong An;Dong-xia Duan.Corrosion inhibition of stainless steel by a sulfate-reducing bacteria biofiim in seawater[J].矿物冶金与材料学报,2012(08):717-725. |
| [11] | 谢飞;吴明;陈旭;王丹;胡宗柳;刘勇峰.SO42-对X80管线钢在库尔勒土壤模拟溶液中腐蚀行为的影响[J].中南大学学报（自然科学版）,2013(1):424-430. |
| [12] | S. Sh. Abedi;A. Abdolmaleki;N. Adibi.Failure analysis of SCC and SRB induced cracking of a transmission oil products pipeline[J].Engineering failure analysis,20071(1):250-261. |
| [13] | 胥聪敏;戚东涛;张瑞峰;胡海军;刘彦明;王洪铎.X80管线钢在西北盐渍土壤模拟溶液中的电化学腐蚀行为[J].机械工程材料,2009(8):60-64,99. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%