Natural Hydroxyapatite: Green Catalyst for the Synthesis of Pyrroles, Inhibitors of Corrosion

Table 5

Electrochemical parameters of steel in 1 M HCl with and without different compounds at 10⁻³ M.

Inhibitor (10^−3 M)	icorr (mA/cm^2)	Ecorr (Ag/AgCl)	η (%)
Blank	0.682	−379	--
1e	0.116	−361	83
1d	0.123	−363	82
1f	0.071	−333	90
1m	0.083	−354	88
1l	0.105	−383	85
1k	0.072	−366	89
1i	0.072	−366	89
1j	0.052	−352	92
1p	0.067	−375	90
1o	0.085	−348	87
1n	0.094	−383	86
1q	0.068	−363	90
1t	0.085	−372	87
1s	0.029	−308	96
1u	0.070	−356	90
1r	0.108	−369	84