Jamal M. Ali; Shatha A. Sameh; Qasim M. Abbas
Abstract
As the practical importance of protection of industrial equipments fromcorrosion the need arises to study the corrosion of different metals as Carbon steel, Zinc and Copper measured ...
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As the practical importance of protection of industrial equipments fromcorrosion the need arises to study the corrosion of different metals as Carbon steel, Zinc and Copper measured their corrosion current and potentials have been investigated in 3.5% NaCl solution at 40ºC for different flow conditions (Re = 5000, 10000 and 15000), by using commercial metal pipe as test specimens cylindrical. Potentiodynamic polarization studies have been performed for single metals. It was found experimentally that the corrosion of metals (Fe, Zn, Cu) is underdiffusion control since the corrosion current density (iL) increases and corrosion potential (Ecorr.) shifts to less negative with increasing velocity, the limiting diffusion current density is independent of the nature of the cathode material, but it depends onthe Reynolds number. The corrosion current density of metals (Fe, Zn, Cu), shows a good agreements with other works, and reasonable agreement with Culburn –Chilton and Paulson correlations are also observed at different Re.No.
