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| EFFECT OF MICROBE ON THE CORROSION BEHAVIORS AND MECHANICAL PROPERTIES OF 25 CARBON STEEL IN TROPICAL SEAWATER CONDITION |
| XIAO Weilong1, CHAI Ke1, YANG Yuhui2, WU Jinyi1 |
1. Ministry of Education Key Laboratory of Application Technology of Hainan Superior Resources Chemical Materials, Material and Chemical Engineering College, Hainan University, Haikou 570228
2. Agricultural College, Hainan University, Haikou 570228 |
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Abstract In this work, the single effect of microbe on the corrosion behaviors of 25 carbon steel is studied by comparing the average corrosion depth of the carbon steel in natural seawater and in sterile seawater in tropic condition. Through examining the strength and Charpy impact absorbed energy after different corrosion periods, the effects of microbiologically influenced corrosion (MIC) process on mechanical properties of 25 steel are illustrated. The results show that the bacterial activity at the interface accelerates the corrosion of 25 steel. When the corrosion time is 365 d, the average corrosion depth of 25 steel in natural seawater is 2.6 times higher than that in sterile seawater. Localized attack is also observed on the specimens immersed in natural seawater for 365 d. The corrosion of 25 steel in natural seawater and sterile seawater reduces the ultimate tensile strength of 25 steel, and this effect is more notable during the corrosion in natural seawater than in the sterile seawater. The analysis reveals that the decrease of the ultimate tensile strength is related to the increase of average corrosion depth. MIC does not decrease the elongation and Charpy impact absorbed energy of the annealed 25 steel, and MIC induced hydrogen embrittlement is not found.
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Received: 10 September 2009
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| Fund: The effect of MIC process on mechanical properties of steels in sea water under tropic condition |
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Corresponding Authors:
WU Jinyi
E-mail: wujinyi1976@yahoo.com.cn
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| [1] Little B, Wagner P. Myths related to microbiologically influenced corrosion [J]. Mater. Perform., 1997, 36(6): 40-44
[2] Little B, Wagner P. Factors influencing the adhesion of microorganisms to surfaces [J]. J. Adhesion, 1986, 20(3): 187-210
[3] Wu J Y, Xiao W L, Chai K, et al. The single effect of microbe on the corrosion behaviors of 45 steel in seawater in tropic condition [J]. Acta Metall. Sin., 2010, 46(1): 118-122
(吴进怡, 肖伟龙, 柴柯等. 热带海洋环境下海水中微生物对45钢腐蚀行为的单因素影响 [J]. 金属学报, 2010, 46(1): 118-122)
[4] Mansfeld F, Little B. A technical review of electrochemical techniques applied to microbiologically influenced corrosion [J].Corros. Sci., 1991, 32(3): 247-261
[5] de Damborenea J J, Cristobal A B, Arenas M A, et al.Selective dissolution of austenite in AISI 304 stainless steel by bacterial activity [J]. Mater. Lett., 2007, 61(3): 821-823
[6] Cristobal A B, Arenas M A, Conde A, et al. Corrosion of stainless steels covered by exopolymers [J]. Electrochim. Acta,2006, 52(2): 546-551
[7] Li X B, Wang W, Wang J, et al. Effect of biofilms on metal corrosion in sea water [J]. Corros. Sci. Prot. Technol., 2002,14(4): 218-222
(李相波, 王伟, 王佳等. 海水中微生物膜的生长对金属腐蚀过程的影响 [J]. 腐蚀科学与防护技术, 2002, 14(4): 218-222)
[8] Jung H G, Yoo J Y, Woo J S. The microbiologically influenced corrosion behavior of C-Mn ship structural steel with different manufacturing processes [J]. ISIJ Int., 2003,43(10): 1603-1610
[9] Mathiyarasu J, Palaniswamy N, Muralidharan V S. Corrosion resistance of cupronickels-An overview [J]. Corros. Rev., 2000,18(1): 65-103
[10] Walsh D, Pope D, Danford M, et al. The effect of microstructure on microbiologically influenced corrosion [J]. JOM,1993, 45(9): 22-30
[11] Chen D B, Hu Y L, Chen X Q. Progress of microbial influenced corrosion in warship [J]. J. Nav. Univ. Eng., 2006, 18(1): 79-84
(陈德斌, 胡裕龙, 陈学群, 舰船微生物腐蚀研究进展 [J]. 海军工程大学学报, 2006, 18(1): 79-84)
[12] Liu D Y, Wei K J, Li W J, et al. Influence of environmental factors in Yulin area of the south China sea on localized corrosion of steels [J]. J. Chin. Soc. Corros. Prot., 2003, 23(4): 211-216
(刘大扬, 魏开金, 李文军等. 南海榆林海域环境因素对钢局部腐蚀的影响 [J]. 中国腐蚀与防护学报, 2003, 23(4): 211-216)
[13] Sreekumari K R, Nandakumar K, Takao K, et al. Silver containing stainless steel as a new outlook to abate bacterial adhesion and microbiologically influenced corrosion [J]. ISIJ Int,2003; 43(11): 1799-1806
[14] Wu J Y, Chai K, Xiao W L, et al. The single effect of microbe on the corrosion behaviors of 25 steel in seawater [J].Acta Metall. Sin., 2010, 46(6): 755-760
(吴进怡, 柴柯, 肖伟龙等. 25钢在海水中的微生物单因素腐蚀 [J]. 金属学报, 2010, 46(6): 755-760)
[15] Biezma M V. The role of hydrogen in microbiologically influenced corrosion and stress corrosion cracking [J]. Int. J.Hydrogen Energ., 2001, 26(5): 515-520 |
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