Corrosion Behavior and Adsorption Thermodynamics of Some Schiff Bases on Mild Steel Corrosion in Industrial Water Medium

Table 1

W and IE % obtained from weight loss measurements of mild steel in industrial water containing various concentrations of SB₁ and SB₂ at different temperatures.

Temperature (°C)	SB1			SB2
	C (mole)	W (mg/cm^2d)	IE %	C (mole)	W (mg/cm^2d)	IE %
30	Blank	2.029	—	Blank	2.029	—
	4.46×10^−4	1.231	39.32	4.51×10^−4	0.993	51.05
	8.93×10^−4	0.877	56.77	9.01×10^−4	0.749	63.08
	13.39×10^−4	0.694	65.79	13.51×10^−4	0.613	69.78
	17.86×10^−4	0.527	74.02	18.02×10^−4	0.525	74.12
	22.32×10^−4	0.421	79.25	22.52×10^−4	0.428	78.90
	26.79×10^−4	0.340	83.27	27.03×10^−4	0.401	80.23
40	Blank	3.103	—	Blank	3.103	—
	4.46×10^−4	0.81	73.89	4.51×10^−4	1.714	44.77
	8.93×10^−4	0.73	76.47	9.01×10^−4	1.281	58.72
	13.39×10^−4	0.61	80.34	13.51×10^−4	1.045	66.33
	17.86×10^−4	0.54	82.59	18.02×10^−4	0.939	69.73
	22.32×10^−4	0.43	86.14	22.52×10^−4	0.813	73.80
	26.79×10^−4	0.37	88.07	27.03×10^−4	0.722	76.73
50	Blank	4.644	—	Blank	4.644	—
	4.46×10^−4	1.26	72.86	4.51×10^−4	2.832	39.02
	8.93×10^−4	1.09	76.52	9.01×10^−4	2.213	52.35
	13.39×10^−4	0.90	80.62	13.51×10^−4	1.811	61.00
	17.86×10^−4	0.82	82.34	18.02×10^−4	1.541	66.82
	22.32×10^−4	0.69	85.14	22.52×10^−4	1.341	71.12
	26.79×10^−4	0.60	87.08	27.03×10^−4	1.164	74.94
60	Blank	7.202	—	Blank	7.202	—
	4.46×10^−4	1.79	46.56	4.51×10^−4	4.823	33.03
	8.93×10^−4	1.58	52.83	9.01×10^−4	3.891	45.97
	13.39×10^−4	1.36	59.40	13.51×10^−4	3.231	55.14
	17.86×10^−4	1.24	62.98	18.02×10^−4	2.992	58.46
	22.32×10^−4	1.09	67.46	22.52×10^−4	2.697	62.55
	26.79×10^−4	0.92	72.53	27.03×10^−4	2.247	68.80