Electrochemical Studies of Monoterpenic Thiosemicarbazones as Corrosion Inhibitor for Steel in 1 M HCl

Figure 3

Nyquist plots of steel (a) in 1 M HCl (b) with different concentrations of Camphor thiosemicarbazone (c), with different concentrations of Carvone thiosemicarbazone (d), and with different concentrations of Pulegone thiosemicarbazone at 293 K.

(a)

(b)

(c)

(d)