排序方式: 共有5条查询结果,搜索用时 15 毫秒
1
1.
Bahaa El-Dien M. El-Gendy Atwa Shoukar T. Ahmed Aziza A. El-Etre Ali Y. 《Protection of Metals and Physical Chemistry of Surfaces》2019,55(1):179-186
Protection of Metals and Physical Chemistry of Surfaces - Three novel inhibitors based on 4,5,6,7-tetrahydrobenzo[b]thiophene scaffold were synthesized and characterized. The inhibitive action of... 相似文献
2.
M. Abdallah A. Y. El-Etre M. F. Moustafa 《Protection of Metals and Physical Chemistry of Surfaces》2011,47(2):246-252
The effect of addition of some amidopoly ethylamine, with different numbers of ethylamine units, on the corrosion of zinc
electrode in 35% ZnCl2, (26% ZnCl2 + 8.8% NH4Cl), (8.8% ZnCl2 + 26% NH4Cl) and 26% NH4Cl electrolytes has been studied using galvanostatic polarization measurements and hydroden evolution reaction (HER). The
effect of the addition on discharge and shelf life of Zn-manganese batteries has been studied. The results showed that the
inhibition efficiency increases with increasing number of ethylamine units per molecule. Inhibition is explained on the basis
of adsorption of amidopoly ethylamine molecules on the zinc electrode surface through their ethylamine groups. 相似文献
3.
The corrosion inhibition characteristics of aqueous extract of seeds of Melia azedarach L.(MA) have been studied as eco-friendly green inhibitor for corrosion control of C-steel in 2 mol·L~(-1) HCl solution by gravimetric and electrochemical methods. The results depict that, the extract inhibits efficiently the corrosion of carbon steel in hydrochloric acid. The efficiency of extract is increased with increasing the extract concentration but independent on the studied temperature. The adsorption of the extract components onto the steel surface was found to be spontaneous, and follows Langmuir adsorption isotherm. The surface morphology of C-steel, in the absence and presence of MA extract in 2.0 mol·L~(-1) hydrochloric acid solution, was studied using scanning electron microscopy(SEM). 相似文献
4.
M. Abdallah E. M. Kamar A. Y. El-Etre Salah Eid 《Protection of Metals and Physical Chemistry of Surfaces》2016,52(1):140-148
The corrosion behavior of aluminum and aluminum silicon alloys in 0.1 M NaOH solution in the absence and presence of gelatin was studied using potentiostat polarization, electrochemical impedance spectroscopy (EIS), cyclic voltammetry and potentiodynamic anodic polarization techniques. The percentage inhibition efficiency increases with increasing the concentration of gelatin and with decreasing temperature as well as Si content. This was attributed to a lower affinity of the inhibitor to adsorb on Si than on Al. The inhibitory action of gelatin was explained in terms of adsorption of gelatin on the surface of Al or Al–Si alloys forming a barrier of mass and charge transfer leading to protect the metal surface from the aggressive ones. The adsorption of gelatin on the metal surface follows Freundlich isotherm. Some activated thermodynamic parameters were calculated and discussed. 相似文献
5.
A.Y. El-Etre 《Corrosion Science》2003,45(11):2485-2495
The inhibitive action of the mucilage extracted from the modified stems of prickly pears, toward acid corrosion of aluminum, is tested using weight loss, thermometry, hydrogen evolution and polarization techniques. It was found that the extract acts as a good corrosion inhibitor for aluminum corrosion in 2.0 M HCl solution. The inhibition action of the extract was discussed in view of Langmuir adsorption isotherm. It was found that the adsorption of the extract on aluminum surface is a spontaneous process. The inhibition efficiency (IE) increases as the extract concentration is increased. The effect of temperature on the IE was studied. It was found that the presence of extract increases the activation energy of the corrosion reaction. Moreover, the thermodynamic parameters of the adsorption process were calculated. It was found also that the Opuntia extract provides a good protection to aluminum against pitting corrosion in chloride ion containing solutions. 相似文献
1