By D. Thierry
This quantity comprises eleven chapters representing experiences made in the MIC consultation at EUROCORR '96 including a paper from the operating social gathering at the economics of MIC with regards to strength station functionality. a lot awareness is given to the presently very important topic of biofilms, really on chrome steel in seawater. There are descriptions of the characterisation of biofilms and their results. the quantity concludes with an account of organic results in strength stations, the industrial implications and prevention tools
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Additional resources for Aspects of Microbially Induced Corrosion: Papers from Eurocorr'96 and the Efc Working Party on Microbial Corrosion
4). Figure 4 shows, in particular, that the two biological and electrochemical parameters appear to be linked by a non linear relationship with two linear arms: A W 0 E > E E W" 0 200 m 600 800 loo0 Extra-Carb (ng cm-2) Fig. 4 Correlation between the corrosion potentials and the EPS carbohydrate contents of biofilms formed on S S surfnces at all marine stations. The dashed area covers 80% of all experimental data . Aspects of Microbially Induced Corrosion one characterised by a very sharp increase of potentials, which corresponds to the first clasping phase of biofilm to surfaces, and which is visible only in the Northern stations, and another, corresponding to EPS carbohydrate contents higher than 100-150 ng cm-2, which follows the relationship of Fig.
Bonis: ’An Optimised Procedure for Corrosion Testing Under CO, and H,S Gas Pressure’, Corrosion, 1990,46 (7), 81-86. 21. K. Tiller: ’Electrochemical aspects of microbial corrosion: an overview’, Microbial Corrosion, The Metals Society, London, 1983,54-65. 22. P. Sury: ’Similarities in the corrosion behaviour of iron, cobalt, and nickel in acid solutions. A review with special reference to the sulphide adsorption’, Corros. Science, 1976,16, 879-901. 23. C. P. Wong, H. Ezuber and A. Garner: ’Pitting of Stainless Steels by Thiosulfate Ions’, Corrosion, 1989,45 (4), 282-287.
22] The fluctuations would have been due to the successive formation and rupture of such films. , a biofilm with corrosion products trapped inside (ferrous sulfide). 0 -100 $ -200 E v -300 e W -400 wG -500 -600 -700 0 1 2 3 4 5 6 7 8 9101112131415 TIME (days) Fig. 7 Development with time of the potential difference between anodes and cathodes during preconditioning,with or without TRB, in a medium containing thiosulfate Risk Factors Involved in the Carbon Steel Corrosion lnduced by Sulfdogenic Bacteria 33 -100 -200 -300 -400 € c;l -500 -600 -700 -800 0 -900 -1000 8 * 2 E 0 1 2 3 4 5 6 7 8 9101112131415 TIME (days) Fig.