caa a22 4500 475814959 CHVBK 20180406123807.0 cr unu---uuuuu 170329e20000601xx s 000 0 eng 10.1023/A:1003945214539 doi (NATIONALLICENCE)springer-10.1023/A:1003945214539 Electrochemical behaviour of aluminium in the presence of EDTA-containing chloride solutions [Elektronische Daten] [G.M. Treacy, A.L. Rudd, C.B. Breslin] The electrochemical behaviour of pure aluminium in an EDTA-containing chloride solution was investigated using potentiodynamic and potentiostatic electrochemical techniques and electrochemical impedance spectroscopy. A pronounced EDTA-induced anodic dissolution was observed in alkaline solutions, but the presence of EDTA in solution had little activating effect on the passivation properties at pH values close to 4.0. This was attributed to the relative stability of the Al(EDTA)− complex formed at the different pH values. This EDTA-induced activation had no deleterious effect on pitting attack, in fact, higher breakdown potentials were observed in the presence of EDTA. This was attributed to the buffering action of EDTA, which inhibited the attainment of a critical pit solution composition. But, in the presence of molybdate, EDTA had no observable effect on pitting attack. The impedance spectra recorded in the presence of EDTA showed evidence for the adsorption of EDTA species during the dissolution process, which in turn, form a large capacitive network, with capacitance values of the order of 3 mF cm−2 in the low frequency region. Kluwer Academic Publishers, 2000 aluminium nationallicence dissolution nationallicence EDTA nationallicence pitting nationallicence Treacy G.M. Department of Chemistry, National University of Ireland Maynooth, Maynooth, Co. Kildare, Ireland aut Rudd A.L. Department of Chemistry, National University of Ireland Maynooth, Maynooth, Co. Kildare, Ireland aut Breslin C.B. Department of Chemistry, National University of Ireland Maynooth, Maynooth, Co. Kildare, Ireland aut Journal of Applied Electrochemistry Kluwer Academic Publishers 30/6(2000-06-01), 675-683 0021-891X 30:6<675 2000 30 10800 https://doi.org/10.1023/A:1003945214539 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1003945214539 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Treacy G.M. Department of Chemistry, National University of Ireland Maynooth, Maynooth, Co. Kildare, Ireland aut NATIONALLICENCE 700 1- Rudd A.L. Department of Chemistry, National University of Ireland Maynooth, Maynooth, Co. Kildare, Ireland aut NATIONALLICENCE 700 1- Breslin C.B. Department of Chemistry, National University of Ireland Maynooth, Maynooth, Co. Kildare, Ireland aut NATIONALLICENCE 773 0- Journal of Applied Electrochemistry Kluwer Academic Publishers 30/6(2000-06-01), 675-683 0021-891X 30:6<675 2000 30 10800 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer