硫酸盐还原菌对18-8不锈钢点蚀行为的影响

金属学报, 2009, 45(5): 536-540. doi: 10.3321/j.issn:0412-1961.2009.05.004

硫酸盐还原菌对18-8不锈钢点蚀行为的影响

基金项目: 青岛市科技局资助项目(YK010403)

关键词：硫酸盐还原菌 , 点蚀 , 原子力显微镜 , 阳极循环极化 , XPS分析

EFFECT OF SULFATE-REDUCING BACTERIA ON THE PITTING CORROSION BEHAVIOR OF 18-8 STAINLESS STEEL

利用原子力显微镜(AFM)和电化学方法研究了海水中硫酸盐还原菌(SRB)对18-8不锈钢(18-8SS)点蚀过程的影响. AFM探测显示,微观蚀孔的生长速率在含SRB介质中明显高于在灭菌介质中.阳极循环极化结果表明,SRB的代谢产物显著降低了18-8SS的点蚀电位和再钝化电位;而且在含SRB介质中,18-8SS在短时间内就能被活化,表明SRB的代谢活动极大地促进了钝化层的破坏过程.阴极极化曲线表明,含SRB介质中单质硫或多态硫的还原是促使点蚀生长的主要因素,其阴极还原电流密度可以达到很高的数值(＞10 μA/cm2).

参考文献

[1]	Newman R C,Webster B J,Kelly R G.ISIJ Int,1991:31:201
[2]	Webster B J,Newman R C.Corros Sci,1993:35:675
[3]	Duan J Z,Hou B R,Yu Z G.Mater Sci Eng,2006:C26:624
[4]	Dominique T,Wolfgang S.In:Marcus P,Oudar J eds.,Corrosion Mechanisms in Theory and Practice,New York:Marcel Dekker Inc,1995:457
[5]	van Ommen K F,Bryant R D,Laishley E J.Anaerobe,1995:1:351
[6]	Silva S D,Basseguy R,Bergel A.J Electroanal Chem,2004:561:93
[7]	Dinh H T,Kuever J,Mubmann M,Hassel A W,Stratmann M,Widdel F.Nature,2004:427:829
[8]	King R A,Miller J D A.Nature,1971:233:491
[9]	Costello J A.S Afr J Sci,1974:70:202
[10]	Schaschl E.Mater Performance,1980:19:9
[11]	Silva S D,Basseguy R,Bergel A.Electrochim Acta,2004;49:4553
[12]	Landoulsi J,Elkirat K,Richard C,Feron D,Pulvin S.Environ Sci Technol,2008:42:2233
[13]	Liu J H,Liang X,Li S M.Acta Metall Sin,2005:41:545(刘建华,梁馨,李松梅.金属学报,2005;41:545)
[14]	Cheng Q H,Wu Q S,Yu J F.China Guide to Grade of Iron and Steels.Beijing:Chinese Standard Press,1994:515(陈庆恒,伍千思,于吉福.中国钢铁材料牌号手册.北京:中国标准出版社,1994:515)
[15]	Postgate J R.The Sulfate Reducing Bacteria.2nd ed,Cambridge:Cambridge University Press,1984:208
[16]	Shibata T,Takeyama T.Corrosion,1977:33:2431
[17]	Chamriski I G,Burns G R,Webster B J,Laycock N J.Corrosion,2004:60:658
[18]	Marcus P,Oudar J.In:McCafferty E,Clayton C R,Oudar J eds.,Fundamental Aspects of Corrosion Protection by Surface Modification,Pennington,NJ:The Electrochemical Society,1984:173
[19]	Marcus P,Teissier A,Oudar J.Surf Sci,11983:29:432
[20]	Marcus P,Teissier A,Oudar J.Corros Sci,1984:24:259
[21]	Chen G,Clayton C R.J Electrochem Soc,1997:144:3140
[22]	Iverson W P.Science,1967:156:1112
[23]	Wagner C D,Riggs W M,Davis L E,Moulder J F.Hand Book of X-ray Photoelectron Spectroscopy.Eden Prairie,MN:Perkin Elmer Corporation Physical Electronics,1979:235

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网

硫酸盐还原菌对18-8不锈钢点蚀行为的影响

EFFECT OF SULFATE-REDUCING BACTERIA ON THE PITTING CORROSION BEHAVIOR OF 18-8 STAINLESS STEEL

参考文献