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 3

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

S.No.	Temp. (°C)	Conc.of inhibitor (mM)	Rct; (ohm cm^2)	Cdl; (ohm µF/cm^2)	I.E %
1.	30°C	Blank	28.9	298.0	-
		0.20	62.6	167.5	53.83
		0.40	68.7	155.0	57.93
		0.60	73.5	149.3	60.68
		0.80	79.4	141.7	63.60
		1.01	86.3	136.2	66.51
		1.21	94.1	135.4	69.28
		1.41	103.6	113.9	72.10
2.	40°C	Blank	21.7	382.0	-
		0.20	51.8	268.7	58.10
		0.40	58.3	229.0	62.77
		0.60	66.5	215.0	67.36
		0.80	74.3	209.0	70.74
		1.01	78.9	195.7	72.49
		1.21	85.2	191.6	74.53
		1.41	89.5	177.0	75.78
3.	50°C	Blank	10.67	975.0	-
		0.20	28.1	582.4	62.02
		0.40	30.5	570.0	65.01
		0.60	37.2	559.8	71.31
		0.80	40.9	533.0	73.91
		1.01	45.3	517.9	76.44
		1.21	47.6	507.5	77.58
		1.41	59.8	480.2	82.15
4.	60°C	Blank	7.5	1126	-
		0.20	24.8	954.0	62.09
		0.40	27.9	922.8	63.74
		0.60	35.4	879.0	68.37
		0.80	39.7	823.0	71.73
		1.01	47.5	760.5	73.51
		1.21	56.3	731.0	80.57
		1.41	84.0	674.4	91.07