The Effect of Achyranthes aspera Extracts on Mild Steel Corrosion in Industrial Water Medium

Table 4

𝐸_corr, 𝐼_corr, 𝑅_ct, and IE % obtained from polarization and impedance measurements for mild steel in industrial water medium containing various concentrations of AA extracts at 30°C.

C (ppm)	EIS				Polarization
	𝑅ct (Ω cm^2)	IE %	𝐸corr (mV)	𝐼corr (mA cm^−2)	𝑏𝑎 (mA dec^−1)	𝑏𝑐 (mA dec^−1)	IE %
0	111.7		−0.785	0.00476	6.000	1.034
200	226.7	50.72	−0.503	0.00250	10.585	2.301	47.57
400	232.7	51.99	−0.574	0.00270	12.216	3.715	52.29
600	290.6	61.56	−0.706	0.00199	10.174	1.380	58.29
800	328.7	66.01	−0.684	0.00156	9.978	1.763	67.23
1000	412.0	72.88	−0.653	0.00128	7.320	1.481	73.14
1200	559.7	80.04	−0.610	0.00089	8.949	2.423	81.23