Advances in Materials Science and Engineering

Research Article

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

Table 2

Polarization resistance and inhibition efficiency for brass in 0.05 M HCl solution with addition of various concentrations of cysteine.
Cinh (mol/dm3)Rp (kΩ·cm2)IE (%)
0.05 HCl1.18—
1·10−4 Cys4.5561.1
1·10−3 Cys6.483.3
5·10−3 Cys6.6486.1
1·10−2 Cys8.4588.9