International Journal of Corrosion

Research Article

Experimental and Theoretical Studies on the Corrosion Inhibition of Brass in Hydrochloric Acid by N-(4-((4-Benzhydryl Piperazin-1-yl) Methyl Carbamoyl) Phenyl) Furan-2-Carboxamide

Table 2

Tafel polarization parameters for brass in 1M HCl with BFC from 30°C to 60°C.


S.No.	Temp. (°C)	Conc. of inhibitor (mM)	(V/SCE)	- (mV dec⁻¹)	- (mV dec⁻¹)	(mA cm⁻²)	IE%

1	30°C	Blank	-0.483	6.85	6.78	3.846	-

		0.20	-0.516	11.63	5.94	1.882	51.06

		0.40	-0.548	10.54	5.70	1.723	55.20

		0.60	-0.549	11.77	4.88	1.570	59.17

		0.80	-0.546	11.10	4.17	1.401	63.57

		1.01	-0.550	11.62	6.72	1.398	63.65

		1.21	-0.566	11.82	6.87	1.354	64.79

		1.41	-0.599	12.68	6.11	1.136	70.46

2	40°C	Blank	-0.466	5.663	6.36	5.728	-

		0.20	-0.468	6.631	6.77	2.457	57.10

		0.40	-0.470	6.178	8.82	2.280	60.19

		0.60	-0.466	8.817	8.70	2.161	62.27

		0.80	-0.474	8.875	8.97	1.986	65.32

		1.01	-0.478	9.957	8.18	1.804	68.50

		1.21	-0.482	13.25	8.50	1.629	71.56

		1.41	-0.493	11.50	6.90	1.472	74.30

3	50°C	Blank	-0.433	6.307	6.09	8.532	-

		0.20	-0.446	6.128	8.51	3.428	59.82

		0.40	-0.451	8.695	7.62	3.276	61.60

		0.60	-0.459	13.30	7.84	3.174	62.79

		0.80	-0.466	13.81	6.81	2.862	66.45

		1.01	-0.472	11..68	6.22	2.650	68.94

		1.21	-0.473	8.105	8.90	2.266	73.44

		1.41	-0.461	11.73	6.78	1.951	77.13

4	60°C	Blank	-0.423	5.681	6.36	9.578	-

		0.20	-0.436	7.897	7.45	3.773	60.60

		0.40	-0.437	11.32	6.95	3.562	62.81

		0.60	-0.442	12.92	7.98	3.118	67.44

		0.80	-0.448	10.91	7.44	3.046	68.19

		1.01	-0.451	10.17	6.76	2.852	70.22

		1.21	-0.457	10.33	9.06	2.312	75.86

		1.41	-0.478	13.42	7.63	1.268	86.79