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Measurement of time resolved photocurrents and photopotentials on passive layers of iron and titanium
Author(s) -
Rieger H. J.,
Plieth W. J.
Publication year - 1988
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.19880391208
Subject(s) - photocurrent , titanium , atomic physics , chemistry , electrode , kinetic energy , laser , analytical chemistry (journal) , optoelectronics , materials science , optics , physics , quantum mechanics , environmental chemistry , organic chemistry
The time dependence of photopotential and photocurrent decay occurring after the incidence of a laser pulse was measured at iron and titanium passive layers. The photopotential decay showed a second order reaction kinetic. The photopotential decay on titanium was found to be much slower than on iron. At the iron electrode the dependence of the photopotential transients on pH‐value, potential and light intensity was examined. The photocurrent transients were mainly determined by the electronic RC‐time constant of the cell and the measuring system.