|
|
|
| Influence of biofilms adsorption kinetics on the open-circuit-potential changes of passive metals in seawater |
| ;;; |
| 中国海洋大学化学化工学院 |
|
|
|
|
Abstract In seawater the influence of biofilms formation kinetics process on two types of passive metals open circuit potentials (EOCP) were studied. 1Cr18Ni9Ti and high Mo steel coupons were immersed in seawater for about 10 days and EOCP increased for about 200mV after about 1 day.Epifluorescence microscopy observation and EOCP data showed that during the initial bacteria adsorption period that EOCP changed greatly and in the following time EOCP increased slowly. The bacteria amounts on metal surface increased according to an exponential law and its adsorption kinetics at metal surface was proposed. The ennoblement of EOCP was similar to the bacteria number increasing: EOCP increased quickly during bacteria adsorption process and increased slowly after biofilms had formed.
|
|
Received: 29 December 2004
|
|
|
[1]Kirchman D,Mitchell R.A biochemical mechanisms for marine bio-fouling[A].The Ocean-An International Workplace[C].Boston:Naval Institute Press,1981:537-541
[2]Little B,Wagner P A,Mansfeld F.Microbiologically InfluencedCorrosion[A].Texas,Houston:NACE International,1997:4-7
[3]Xu K,Dexter S C,Luther G W.Voltammetric microelectrodes forbiocorrosion studies[J].Corrosion,1998,54(10):814-823
[4]Mollica A,Trevis A.Correlation between the formation of a primaryfilm and the modification of the cathodic surface steel in seawater[A].Proc.4thInt.Cong.Manne Corrosion and Fouling[C].An-tibes:Juan-Les-Prins,1976:351-365
[5]Dexter S C,Gao G Y.Effect of seawater biofilms on corrosion po-tential and oxygen reduction of stainless steel[J].Corrosion,1988,44(10):717-723
[6]Scotto V,Lai M E.The ennoblement of stainless steel in seawater:a likely explanation coming from the field[J].Corros.Sci.,1998,40(6):1007-1018
[7]Scotto V,Mollica A,et al.Biofilm influence on ennoblement of pas-sive metals[A].Proceeding Second MAST Days and EuropeanMarket[C].Scrrento:Wiley-VCH Press,1995:1060-1073
[8]Scotto V,Lai M E.Marine bacteria involved in the ennoblement ofstainless steel[A].European Federation of Corrosion[C].London:Cambridge University Press,1997:41-49
[9]Belas M R,Colwell R R.Adsorption kinetics of laterally and polarlyflagellated vibrio[J].Journal of Bacteriology,1982,(151):1568-1580
[10]Berkeley R C W,Lynch J M,Melling J,Rutter P R,Vincent B.Microbial Adhesion to Surfaces[M].London:Ellis Horwood Lim-ited,1980:67
[11]Springer E L,Roth I L.The ultrastructure of the capsules of diplo-coccus pneumoniae and klebsiella pnemoniae stained with tutheni-um red[J].Journal of General Microbiology,1973,(74):21-31
[12]Bangham A D,Pethica B A.The adhesiveness of cells and the na-ture of the chemical groups at their surfaces[A].Proceedings ofthe Royal Physical Society of Edinburgh[C].Scotland:The RoyalSociety of Edinburgh Press,1960,(28):43-52
[13]Curtis A S G.Cell contacts:some physical considerations[J].American Naturalist,1960,(94):37-56
[14]Pethica B A.The physical chemistry of cell adhesion[J].Experi-mental Cell Research Supplement,1961,(8):123-140 |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
