574321.fig.006a
(a)
574321.fig.006b
(b)
574321.fig.006c
(c)
Figure 6: SEM micrographs of; (a) polished carbon steel (control)—Magnification ×500, (b) carbon steel immersed in sea water—magnification ×500, (c) carbon steel immersed in sea water containing 8ml of HE and 25 ppm of —magnification—×500.