Research Article

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

Figure 2

Open circuit potential of brass in 0.05 M HCl solution (a) without and with the addition of different concentrations of cysteine (1·10−4 to 1·10−2 M), (b) after immersion in 1·10−2 M cysteine solution for various periods of time (15, 30, 60, and 1140 min), and (c) OCP of brass in 0.05 M HCl + 1·10−2 M cysteine solution after immersion in 1·10−3 M SDS solution for various periods of time (15, 30, 60, 1200, and 4080 min).
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(b)
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