Characterization of hydrogen permeation in armco-Fe during cathodic polarization in aqueous electrolytic media

Samuel M. Charca; Oswald N.C. Uwakweh; Basir Shafiq; Vinod S. Agarwala

doi:10.1007/s11665-007-9114-3

Characterization of hydrogen permeation in armco-Fe during cathodic polarization in aqueous electrolytic media

Samuel M. Charca
, Oswald N.C. Uwakweh
, Basir Shafiq
, Vinod S. Agarwala

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	127-133
Number of pages	7
Journal	Journal of Materials Engineering and Performance
Volume	17
Issue number	1
DOIs	https://doi.org/10.1007/s11665-007-9114-3
State	Published - Feb 2008
Externally published	Yes

Keywords

Armco-Fe
Cathodic polarization
Hydrogen permeation
Hydrogen recombination inhibitor agent (poison)

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10.1007/s11665-007-9114-3

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@article{0d646434edb84b8ab5410100c9f20a76,

title = "Characterization of hydrogen permeation in armco-Fe during cathodic polarization in aqueous electrolytic media",

abstract = "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.",

keywords = "Armco-Fe, Cathodic polarization, Hydrogen permeation, Hydrogen recombination inhibitor agent (poison)",

author = "Charca, \{Samuel M.\} and Uwakweh, \{Oswald N.C.\} and Basir Shafiq and Agarwala, \{Vinod S.\}",

note = "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.",

year = "2008",

month = feb,

doi = "10.1007/s11665-007-9114-3",

language = "English",

volume = "17",

pages = "127--133",

journal = "Journal of Materials Engineering and Performance",

issn = "1059-9495",

number = "1",

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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 -

Characterization of hydrogen permeation in armco-Fe during cathodic polarization in aqueous electrolytic media

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