Research Article

Inhibition of Corrosion of Carbon Steel in Well Water by DL-Phenylalanine-Zn2+ System

Figure 4

AC impedance spectra of carbon steel immersed in test solution (phase-Bode plot) (pH = 8). (a) Well water (blank). (b) Well water + DL-phenylalanine (150 ppm) + Zn2+ (5 ppm).
720965.fig.004a
(a)
720965.fig.004b
(b)