caa a22 4500 475815521 CHVBK 20180406123809.0 cr unu---uuuuu 170329e20000301xx s 000 0 eng 10.1023/A:1003981509603 doi (NATIONALLICENCE)springer-10.1023/A:1003981509603 The effect of benzotriazole on mass transfer in the corrosion of a copper rotating disk electrode [Elektronische Daten] [J.L. Guiñón, J. García-Antón, V. Pérez-Herranz] The effect of benzotriazole, BTA, on mass transfer in dissolution-corrosion of the copper rotating disk electrode in 0.02 M Fe(III)-0.5 M H2SO4 has been studied by means of atomic absorption spectrometry. The mass transfer coefficient, K, was determined from the slope of ln(C 0/C)Fe(III) vs. time plots. In the absence of BTA the corrosion process can be described by the correlation Sh = KR/D = 4.47Re 0.5. The difference in values between Sh and Sh Levich, and the change in slope in the Arrenhius plot points to mixed control for the cathodic process Fe3+ + 1e− → Fe 2+ and charge transfer control for the anodic process, Cu → Cu2+ + 2e. The average activation energies were 7.7 kJ mol−1 and 19.5 kJ mol−1 at (500-1500) and (2000-3000) rpm, respectively. At low concentration of BTA the inhibiting action of BTA increases with concentration and with rotation speed. For [BTA] ≥ 5 × 10−3 M, the K value, 10−4 cm s−1, remains constant and is independent of rotation rate. The morphology of the copper rotating disk after corrosion in the absence and presence of BTA was examined using scanning electron microscopy (SEM). Kluwer Academic Publishers, 2000 benzotriazole nationallicence copper nationallicence corrosion nationallicence mass-transfer coefficient nationallicence rotating-disk electrode nationallicence Guiñón J.L. Departamento de Ingeniería Química y Nuclear. E.T.S.I. Industriales, Universidad Politécnica de Valencia, P.O. Box 22012, E 46071, Valencia, Spain aut García-Antón J. Departamento de Ingeniería Química y Nuclear. E.T.S.I. Industriales, Universidad Politécnica de Valencia, P.O. Box 22012, E 46071, Valencia, Spain aut Pérez-Herranz V. Departamento de Ingeniería Química y Nuclear. E.T.S.I. Industriales, Universidad Politécnica de Valencia, P.O. Box 22012, E 46071, Valencia, Spain aut Journal of Applied Electrochemistry Kluwer Academic Publishers 30/3(2000-03-01), 379-384 0021-891X 30:3<379 2000 30 10800 https://doi.org/10.1023/A:1003981509603 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1003981509603 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Guiñón J.L. Departamento de Ingeniería Química y Nuclear. E.T.S.I. Industriales, Universidad Politécnica de Valencia, P.O. Box 22012, E 46071, Valencia, Spain aut NATIONALLICENCE 700 1- García-Antón J. Departamento de Ingeniería Química y Nuclear. E.T.S.I. Industriales, Universidad Politécnica de Valencia, P.O. Box 22012, E 46071, Valencia, Spain aut NATIONALLICENCE 700 1- Pérez-Herranz V. Departamento de Ingeniería Química y Nuclear. E.T.S.I. Industriales, Universidad Politécnica de Valencia, P.O. Box 22012, E 46071, Valencia, Spain aut NATIONALLICENCE 773 0- Journal of Applied Electrochemistry Kluwer Academic Publishers 30/3(2000-03-01), 379-384 0021-891X 30:3<379 2000 30 10800 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer