Zobrazeno 11 - 20
of 105
pro vyhledávání: '"Badr G. Ateya"'
Publikováno v:
Journal of Applied Electrochemistry. 35:297-303
Carbon felt was used in porous electrodes to achieve electrochemical oxidation of sulfide ions from flowing chloride brines. Using X-ray photoelectron spectroscopy (XPS) and Energy Dispersive Spectroscopy (EDS), sulfur was identified as the final rea
Publikováno v:
Journal of Applied Electrochemistry. 34:47-53
The selective dissolution of brass was studied using potentiodynamic polarization, coloumetric analysis and electrochemical impedance spectroscopy (EIS). Using coloumetric analysis, the partial currents i Zn and i Cu were measured under various poten
Publikováno v:
The Journal of Physical Chemistry B. 107:5575-5585
Benzotriazole (BTAH) and copper ions exhibit synergistic effects on the electrochemical impedance spectroscopy and corrosion behavior of iron in sulfuric acid. The presence of submicro- and micromolar amounts of Cu2+ ions along with millimolar amount
Publikováno v:
Materials Chemistry and Physics. 78:534-541
Low carbon steel exhibits active–passive transition in buffered slightly acidic (pH 4–6) brines at various temperatures. The pH, the temperature and the concentration of chloride ions have significant effects on the active–passive behavior and
Autor:
Badr G. Ateya, F. Al-Kharafi
Publikováno v:
Electrochemistry Communications, Vol 4, Iss 3, Pp 231-238 (2002)
The anodic oxidation of sulfide ions from chloride brines at graphite electrodes is shown to produce elemental sulfur, that was identified using XPS and EDS measurements. The process is controlled by charge transfer at the interface and diffusion of
Publikováno v:
Journal of Applied Electrochemistry. 32:1363-1370
The polarization curves of low carbon steel in deaerated carbonate bicarbonate buffers (pH 10.3) show three distinct regions: (a) an active region characterized by a Tafel slope of 125 ± 5 mV which is independent of the chloride concentration, (b) a
Publikováno v:
CORROSION. 57:749-752
Stress corrosion behavior of alpha Al bronze (Cu-7%Al) (UNS C61400) was studied in solutions of 0.1 M to 8 M sodium hydroxide (NaOH) under various potentials (−600 mV vs normal hydrogen electrode [NHE] to 800 mVNHE) and slow strain rates. Analysis
Publikováno v:
CORROSION. 57:428-432
Effects of thiosulfate (S2O32−) and sulfite (SO32−) on hydrogen evolution and permeation within iron have been studied in acid and neutral solutions. Results show that thiosulfate increases the hydrogen permeation rate and depolarizes the hydroge
Publikováno v:
Journal of Applied Electrochemistry. 31:1261-1265
Benzotriazole (BTAH) is shown to decrease the extent of localized corrosion of alpha brass in salt water contaminated by sulfide ions. The results are interpreted in terms of competitive adsorption of BTAH and sulfide ions on the brass surface and in
Publikováno v:
Journal of The Electrochemical Society. 146:208-213
Packed bed electrodes, made of stacked screens, have been used as cathodes for the removal of lead ions from flowing alkaline electrolytes. We consider the coulombic efficiency ξ = i Pb / ( i Pb + i H ) , where i Pb and i H are, respectively, the le