Monitoring the Interaction of Two Heterocyclic Compounds on Carbon Steel by Electrochemical Polarization, Noise, and Quantum Chemical Studies

Table 2

Potentiodynamic polarization parameters of CS in the presence and absence of P2APH and RP2APH in 1 M HCl at °C for immersion period of 30 min.

	P2APH					RP2APH
(mM)	(mV/SCE)	(μA/cm^2)	(mV/dec)	(mV/dec)		− (mV/SCE)	(μA/cm^2)	(mV/dec)	(mV/dec)
0	531	639.31	102	152	—	531	639.31	102	152
0.2	511	383.20	110	137	40.03	433	375.61	126	161	41.22
0.4	497	219.93	85	123	66.68	517	249.71	122	175	60.92
0.6	488	108.08	67	126	83.08	511	206.93	94	162	67.62
0.8	501	55.67	52	126	91.23	509	105.76	119	168	83.45
1.0	484	49.40	112	136	92.27	512	77.55	146	167	87.86