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HYDROGEN PERMEATION INVESTIGATION OF A MARINE STEEL IN THE SEA MUD WITH SULFATE-REDUCING BACTERIA |
HUANG Yanliang1;ZHU Yongyan1;HUANG Sidi2;ZHANG Yangyang3 |
1. Institute of Oceanology; Chinese Academy of Sciences; Qingdao 266071
2. No. 58 Middle School of Qingdao; Qingdao 266000
3. No. 2 Middle School of Qingdao; Qingdao 266071 |
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Abstract Hydrogen permeation behavior of corroding pipeline steel of API X56 in sea-mud was studied by using Devnathan-Stachurski Double cell technique. The study showed that the culturing cycle of sulfate reducing bacteria (SRB) in sea-mud can be divided into 4 periods: rapid growing period, steady growing period, declining period and surviving period. The hydrogen permeation current time curve under free corrosion potential within one SRB culturing cycle corresponds to SRB growing curve; Active SRB can promote hydrogen permeation and cathodic polarization accelerates the effect.
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Received: 15 March 2007
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Corresponding Authors:
HUANG Yanliang
hyl@ms.qdio.ac.cn
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[1]Huang Y L.Corrosion failure of marine steel in sea-mud contain-ing sulfate reducing bacteria[J].Mater.Corros.,2004,55(2):124-127 [2]Huang Y L,Duan J Z,Ma S D.Effects of anaerobe in sea bottom sediment on the corrosion of carbon steel[J].Mater.Corros.,2004,55(1):46-48 [3]Devnathan M A V,Stachurski Z.A technique for the evaluation of hydrogen embrittlement characteristics of electroplating baths[J].J.Electrochem.Soc.,1963,110(8):886-890 [4]Zhu Y Y,Zheng C B,Li Y T,et al.The change in corrosion pa-rameter with SRB growth in sea mud[J].Marine Sci.,2006,30(11):37~40(朱永艳,黄彦良,李言涛等.海泥中SRB含量变化对环境腐蚀因子的影响[J].海洋科学,2006,30(11):37-40) [5]Zhang J L,Hou B R,Guo G Y,et al.Effect of sulphate-reducing bacteria on electro-chemical corrosion behavior of16Mn steel in sea mud[J].Chin.J.Oceanol.Limnol.,2001,26(1):87-90 |
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