Imperial College London

ProfessorMaryRyan

Faculty of EngineeringDepartment of Materials

Vice-Dean (Research), Faculty of Engineering
 
 
 
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Contact

 

+44 (0)20 7594 6755m.p.ryan

 
 
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Location

 

B338Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Hassan:2017:10.1149/08010.0509ecst,
author = {Hassan, Sk M and Abdullah, AM and Ko, M and Laycock, N and Ingham, B and Ryan, MP and Williams, DE},
doi = {10.1149/08010.0509ecst},
pages = {509--517},
title = {Effect of Cr/Mo on the protectiveness of corrosion scales on carbon steel in sweet medium under high flow regime},
url = {http://dx.doi.org/10.1149/08010.0509ecst},
year = {2017}
}

RIS format (EndNote, RefMan)

TY  - CPAPER
AB - © The Electrochemical Society. We investigate the effects of Cr/Mo micro-alloying of plain carbon steel on the corrosion behaviour and scale protectiveness in CO 2 saturated (sweet) brine (0.5 M NaCl) environment, under hydrodynamic conditions, at 80 o C in a slightly acidic environment (pH 6.6). Potentiostatic current transients indicate positive effects of Cr/Mo micro-alloying on an individual as well as synergistic level of the alloyents. Increase in Cr/Mo content appears to reduce the overall current passing through corrosion scale and encourage faster crystallization. SEM images suggest that Cr/Mo micro-alloying induced formation of thinner scale with better protectiveness. From the mechanistic perspective, we suggest that the addition of small amounts of Cr/Mo modulates the current due to dissolution of iron, as well as the current due to growth of a crystalline layer, by modifying the local environment at the steel surface. Modeling of the hypothesis is currently in progress.
AU - Hassan,Sk M
AU - Abdullah,AM
AU - Ko,M
AU - Laycock,N
AU - Ingham,B
AU - Ryan,MP
AU - Williams,DE
DO - 10.1149/08010.0509ecst
EP - 517
PY - 2017///
SN - 1938-6737
SP - 509
TI - Effect of Cr/Mo on the protectiveness of corrosion scales on carbon steel in sweet medium under high flow regime
UR - http://dx.doi.org/10.1149/08010.0509ecst
ER -