Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Badr G. Ateya"'
Publikováno v:
e-Journal of Surface Science and Nanotechnology. 8:17-20
The effect of oxygen bubbling on the dissolution of brass was studied. Brass samples were immersed in acidified sodium sulfate solution at different temperatures (25-80°C) and subjected to bubbled oxygen during the testing period of 7 h. Samples of
Publikováno v:
Applied Surface Science. 253:8986-8991
Benzotriazole (BTAH) is an excellent inhibitor for the corrosion of copper and many of its alloys in unpolluted media. Protection is attributed to the formation of a film of Cu(I)BTA. Injection of sulfide ions into a benzotriazole inhibited salt wate
Publikováno v:
Scripta Materialia. 54:1673-1677
While benzotriazole (BTAH, C6H5N3) has long been known as an efficient inhibitor for the general corrosion of copper, this paper documents the occurrence of intergranular corrosion (IGC) of copper in a salt solution (3.5 wt.% NaCl) in the presence of
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
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
Publikováno v:
Journal of The Electrochemical Society. 144:L58-L61
The results presented show that benzotriazole (BTA) inhibits the absorption of hydrogen into iron which is cathodically polarized in an acid (pH {approx_equal} 1.7) sulfate solution. Analysis of the results indicates that BTA inhibits also the hydrog
Publikováno v:
Journal of The Electrochemical Society. 144:922-927
A mathematical model is developed to simulate the electrowinning of non-noble metals (e.g., Zn, Cr) within flowthrough porous electrodes under the conditions of simultaneous evolution of hydrogen gas bubbles. The results of the model are presented as
Publikováno v:
Journal of Solid State Chemistry. 123:249-254
An autocatalytic mechanism is shown to explain the kinetics of the surface reaction occurring during the low-temperature reduction of sintered hematite pellets with hydrogen between 300 and 500°C. The results satisfactorily fit the predictions of a
Publikováno v:
International Journal of Hydrogen Energy. 21:273-280
The aim of this work was to test the feasibility of using commercially available Cu screens as cathodes for the electrolytic production of hydrogen. The screens were stacked in the form of packed bed flow-through electrodes. The effects of the variou
Publikováno v:
Journal of The Electrochemical Society. 142:4122-4128
This paper presents an interpretation of the experimental results obtained on the electrowinning of zinc at a flowthrough porous electrode in light of a mathematical model which was presented in Part I. The process is accompanied by simultaneous hydr