853730.fig.0015a
(a)
853730.fig.0015b
(b)
853730.fig.0015c
(c)
853730.fig.0015d
(d)
853730.fig.0015e
(e)
853730.fig.0015f
(f)
853730.fig.0015g
(g)
853730.fig.0015h
(h)
853730.fig.0015i
(i)
Figure 15: Effect of concentration on anodic and cathodic polarization curves of steel immersed in different pH solutions with and without 0.1 mol/L or . (a) pH 12.6 without or , (b) pH 10.3 without or , (c) pH 8.1 without or , (d) pH 12.6 with 0.1 mol/L , (e) pH 10.3 with 0.1 mol/L , (f) pH 8.1 with 0.1 mol/L , (g) pH 12.6 with 0.1 mol/L , (h) pH 10.3 with 0.1 mol/L , and (i) pH 8.1 with 0.1 mol/L .