Table 7.

PDP corrosion parameters of CS utilizing 1.0 M HCl without and with besides utilizing diverse doses of the organic constitutions a-d at 298 K

Inhibitor	Conc., M	− Ecorr (mVvs.SCE),	βa, mV decˉ1	− βc, mV decˉ1	icorr, μA mˉ2	θ	ηPDP
HM-1223	1.0 mol Lˉ1 HCl	278 ± 0.2011	88.5	176	990 ± 0.1754	–	–
	5 × 10ˉ6	289 ± 0.2144	80	227	137 ± 0.1711	0.862	86.2
	7 × 10ˉ6	291 ± 0.2214	72	179	128 ± 0.1952	0.871	87.1
	9 × 10ˉ6	289 ± 0.1952	54	251	95 ± 0.2145	0.904	90.4
	11 × 10ˉ6	292 ± 0.1722	54	260	83 ± 0.2111	0.916	91.6
HM-1222	5 × 10ˉ6	275 ± 0.1625	66	225	161 ± 0.2145	0.837	83.7
	7 × 10ˉ6	280 ± 0.1754	58	267	144 ± 0.1234	0.855	85.5
	9 × 10ˉ6	274 ± 0.1952	51	153	110 ± 0.2156	0.889	88.9
	11 × 10ˉ6	275 ± 0.1854	64	132	96 ± 0.2011	0.903	90.3
HM-1224	5 × 10ˉ6	273 ± 0.1625	66	139	188 ± 0.2014	0.810	81.0
	7 × 10ˉ6	277 ± 0.1524	65	202	157 ± 0.1245	0.841	84.1
	9 × 10ˉ6	277 ± 0.1754	66	135	125 ± 0.1857	0.874	87.4
	11 × 10ˉ6	275 ± 0.1874	63	142	101 ± 0.1574	0.898	89.8
HM-1221	5 × 10ˉ6	272 ± 0.1957	70	146	195 ± 0.1541	0.803	80.3
	7 × 10ˉ6	287 ± 0.1875	66	152	177 ± 0.1475	0.821	82.1
	9 × 10ˉ6	270 ± 0.1789	71	136	138 ± 0.1524	0.861	86.1
	11 × 10ˉ6	269 ± 0.1321	74	129	121 ± 0.1325	0.878	87.8