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

Table 3

Corrosion parameters for brass in acidic chloride solution after immersion in cysteine and SDS solutions for various periods of time.

Cinh (mol/dm^3)	t (min)	Ecorr (V) versus SCE	jcorr (μA/cm^2)	ba (V)	bc (V)
1·10^−2 Cys	15	−0.129	9	0.079	−0.099
	30	−0.140	8	0.072	−0.155
	60	−0.127	7.5	0.067	−0.262
	1140	−0.120	7	0.074	−0.256
1·10^−3 SDS	15	−0.213	3	0.048	−0.075
	30	−0.201	2.3	0.05	−0.0725
	60	−0.194	1.6	0.037	−0.066
	1200	−0.173	1	0.028	−0.049
	4080	−0.123	0.64	0.027	−0.046