Research Article

Protection of Brass in HCl Solution by L-Cysteine and Cationic Surfactant

Figure 9

SEM and EDS analysis of (a) the polished brass surface without any treatment, (b) the brass surface after immersion of the electrode for 1140 min in 1·10−2 M cysteine solution, and (c) the brass surface after immersion of the electrode for 4080 min in 1·10−3 M SDS solution.
(a)
(b)
(c)