574321.fig.007a
(a)
574321.fig.007b
(b)
574321.fig.007c
(c)
574321.fig.007d
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574321.fig.007e
(e)
574321.fig.007f
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574321.fig.007g
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574321.fig.007h
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574321.fig.007i
(i)
Figure 7: Two-dimensional AFM images of the surface of (a) polished carbon steel (control); (b) carbon steel immersed in sea water (blank); (c) carbon steel immersed in sea water containing HE(8 mL) + (25 ppm). Three-dimensional AFM images of the surface of (d) polished carbon steel (control); (e) carbon steel immersed in sea water (blank); (f) carbon steel immersed in sea water containing HE(8 mL) + (25 ppm). AFM cross-sectional images of the surface of (g) polished carbon steel (control); (h) carbon steel immersed in sea water (blank); (i) carbon steel immersed in sea water containing HE(8 mL) + (25 ppm).