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:2018,
author = {Hassan, Sk M and Abdullah, AM and Ryan, MP and Ko, M and Williams, DE and Laycock, N and Ingham, B},
title = {Mo-mediated corrosion behaviour of 1 Cr - Carbon steel in sweet medium under hydrodynamic control},
year = {2018}
}

RIS format (EndNote, RefMan)

TY  - CPAPER
AB - © 2018 by NACE International. The effects of micro-alloying of plain carbon steel with Mo (0.7 wt.%) in the presence of 1 wt.% Cr on the corrosion behaviour and scale protectiveness in CO2 saturated (sweet) brine (0.5 M NaCl) environment, under hydrodynamic conditions, at 80°C in a slightly acidic environment (pH 6.6) were investigated. Potentiostatic current transients suggest that there exists a synergistic interaction of Cr and Mo, which induces more rapid scale crystallization compared to the Mo-free steel. The presence of Mo also suppressed the current passing through corrosion scale. SEM images suggested that 1Cr.0.7Mo steel induced formation of thinner scale with better protectiveness compared to their non-Mo counterparts. From the mechanistic perspective, we suggest that the addition of small amounts of Mo induces formation of a crystalline scale at short times and then it accelerates the growth of that crystalline layer, by modifying the local environment at the steel surface. Modeling of this hypothesis is currently in progress.
AU - Hassan,Sk M
AU - Abdullah,AM
AU - Ryan,MP
AU - Ko,M
AU - Williams,DE
AU - Laycock,N
AU - Ingham,B
PY - 2018///
SN - 0361-4409
TI - Mo-mediated corrosion behaviour of 1 Cr - Carbon steel in sweet medium under hydrodynamic control
ER -