Synergistic effect of amino acids and chloride ion on adsorption On copper metal

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Author Gomma, Gamal E. K. [جمال ك. جمعة] en_US
Author Wahdan, Mostafa H. M. en_US
Available date 2009-11-25T15:28:01Z en_US
Publication Date 1994 en_US
Citation Qatar University Science Journal, 1994, Vol. 14, No. خاص, Pages 203-208. en_US
URI http://hdl.handle.net/10576/10140 en_US
Abstract The effect of adsorption of a- alanine, P-alanine, DL-aspartic, L-glutamine, iso-leucine and L-lysine in 1 M HC1 solution on the corrosion of copper has been studied using the potentiokinetic technique. The examined amino acids inhibited the corrosion of copper at all examined concentrations, but L-lysine accelerated the corrosion rate. The corrosion rates of copper were measured as a function of concentrations. The degree of surface coverage as calculated from the corrosion rate is used to calculate the free energy of adsorption of the amino acids. The variation of the free energy of adsorption with surface coverage is interpreted in terms of change in the mechanism of inhibition of amino acids with concentration. The synergistic effect of amino acids and chloride ions is discussed from the viewpoint of adsorption models. The inhibitive action requires a knowledge of inhibitor at the electrode-solution interface. Adsorption isotherm of the inhibitors for the corrosion process have been discussed. en_US
Abstract تمت لمحراسة تأثير إدمصاص . ar
Language en en_US
Publisher Qatar University en_US
Subject Physical Chemistry en_US
Subject الكيمياء الفيزيائية ar
Title Synergistic effect of amino acids and chloride ion on adsorption On copper metal en_US
Alternative Title تأثير الأحماض الأمينية وأيون الكلوريد علىالادمصاص على فلز النحاس ar
Type Article en_US


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