TY - JOUR
T1 - Characterization of hydrogen permeation in armco-Fe during cathodic polarization in aqueous electrolytic media
AU - Charca, Samuel M.
AU - Uwakweh, Oswald N.C.
AU - Shafiq, Basir
AU - Agarwala, Vinod S.
N1 - Funding Information:
The authors, ONCU and BS would like to acknowledge support of ASEE through Summer Faculty program at different times, and also wishes to acknowledge the support of Dr. Yapa Rajapakse, the program manager of ONR-grant # N000140310540.
PY - 2008/2
Y1 - 2008/2
N2 - The study of hydrogen permeation behavior in Armco-Fe showed that 0.1 M H 2SO 4 was a more effective medium for cathodic polarization compared to 0.1 M NaOH. When both electrolytes were "poisoned" with 1.00 g/L Na 2HAsO 4 • 7H 2O, as hydrogen recombination inhibitor, the corresponding hydrogen permeation levels were 3.5 × 10 -5 A/cm 2 in 0.1 M H 2SO 4 while 0.75 × 10 -5A/cm 2 in 0.1 M NaOH. The breakthrough times were less than 30 s in 0.1 M H 2SO 4, while about 100 s in the NaOH. With varying amounts of "poisons", peak permeation of hydrogen (1.75 × 10 -5 A/cm 2) was achieved with 10 g/L Na 2HAsO 4 • 7H 2O in 0.1 M H 2SO 4, while the least permeation resulted with 10 g/L (NH 2CSH 2) Thiourea addition for same level of 1.00 mA/cm 2 cathodic polarization.
AB - The study of hydrogen permeation behavior in Armco-Fe showed that 0.1 M H 2SO 4 was a more effective medium for cathodic polarization compared to 0.1 M NaOH. When both electrolytes were "poisoned" with 1.00 g/L Na 2HAsO 4 • 7H 2O, as hydrogen recombination inhibitor, the corresponding hydrogen permeation levels were 3.5 × 10 -5 A/cm 2 in 0.1 M H 2SO 4 while 0.75 × 10 -5A/cm 2 in 0.1 M NaOH. The breakthrough times were less than 30 s in 0.1 M H 2SO 4, while about 100 s in the NaOH. With varying amounts of "poisons", peak permeation of hydrogen (1.75 × 10 -5 A/cm 2) was achieved with 10 g/L Na 2HAsO 4 • 7H 2O in 0.1 M H 2SO 4, while the least permeation resulted with 10 g/L (NH 2CSH 2) Thiourea addition for same level of 1.00 mA/cm 2 cathodic polarization.
KW - Armco-Fe
KW - Cathodic polarization
KW - Hydrogen permeation
KW - Hydrogen recombination inhibitor agent (poison)
UR - https://www.scopus.com/pages/publications/38149133599
U2 - 10.1007/s11665-007-9114-3
DO - 10.1007/s11665-007-9114-3
M3 - Article
AN - SCOPUS:38149133599
SN - 1059-9495
VL - 17
SP - 127
EP - 133
JO - Journal of Materials Engineering and Performance
JF - Journal of Materials Engineering and Performance
IS - 1
ER -