Browsing by Author "Sk, Mobbassar hassan"
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Corrosion of general oil-field grade steel in CO2 environment - An update in the light of current understanding
Sk, Mobbassar Hassan; Abdullah, Aboubakr M ( Electrochemical Science Group , 2017 , Article)In this review, we discussed the current mechanistic understanding and effects of key parameters on corrosion of carbon and low alloy steel (CLAS) in CO2 environments. In particular, we emphasized on the current understanding ... -
Effect of Trace 100 vppm H2S on the Corrosion Behaviour of Plain Carbon and Microalloyed Steels in a Predominant Sweet Environment in High Flow Regime
Sk, Mobbassar hassan; Abdullah, Aboubakr Moustafa; Al-Qahtani, Noora Hamad S; Laycock, Nick; Ryan, Mary P; Williams, David E... more authors ... less authors ( Hamad bin Khalifa University Press (HBKU Press) , 2018 , Conference Paper)We investigate the effects of the presence of trace (100 vppm) H2S on the corrosion behaviour of plain carbon steel and its various micro-alloyed counterparts in a CO2 saturated (sweet) brine (0.5 M NaCl) environment, in ... -
Effects of microstructures on hydrogen induced cracking of electrochemically hydrogenated double notched tensile sample of 4340 steel
Sk, Mobbassar Hassan; Overfelt, Ruel A.; Abdullah, Aboubakr M. ( Elsevier Ltd , 2016 , Article)Quantitative fractographic characteristics of 4340 steel is demonstrated for a grain size range of 10-100 ?m and hardness range of 41-52 HRC. Double-notched tensile samples were electrochemically charged in-situ with ... -
Local supersaturation and the growth of protective scales during CO2 corrosion of steel: Effect of pH and solution flow
Sk, Mobbassar Hassan; Abdullah, Aboubakr M.; Ko, Monika; Ingham, Bridget; Laycock, Nick; Arul, Rakesh; Williams, David. E.... more authors ... less authors ( Elsevier Ltd , 2017 , Article)By correlating in-situ synchrotron X-ray diffraction measurements with electrochemical measurements using a rotating disc electrode, we demonstrate the critical dependence on the local supersaturation of the kinetics of ... -
Time-resolved photocurrent spectroscopic diagnostics of electrically active defects in AlGaN/GaN High Electron Mobility Transistor (HEMT) structure grown on Si wafers
Ozden, Burcu; Khanal, Min P; Mirkhani, Vahid; Yapabandara, Kosala; Yang, Chungman; Ko, Sangjong; Youn, Suhyeon; Hamilton, Michael C; Sk, Mobbassar Hassan; Ahyi, Ayayi Claude; Park, Minseo... more authors ... less authors ( American Scientific Publishers , 2016 , Article)Time-resolved photocurrent (TRPC) spectroscopy with a variable-wavelength sub-bandgap light excitation was used to study the dynamics of the decaying photocurrent generated in the heterostructures of the AlGaN/GaN high ... -
Usefulness of In-Situ Synchrotron Study on Scale Formation during CO2 Corrosion of Mild Steel: A Review
Sk, Mobbassar Hassan ( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)Despite the availability of the detailed knowledge about the chemical, electrochemical and transport processes associated with the formation of ferrous carbonate during CO2- corrosion of mild steel, information available ...