Table 2.

The corrosion current density and corrosion rate of MWCNTs/WPU conductive coating.

Sample	0 wt %	0.2 wt %	0.3 wt %	0.4 wt %	0.5 wt %	0.6 wt %	Q235 Steel
I0 (A/cm2)	1.8706 × 10−6	1.7713 × 10−6	4.8596 × 10−6	7.6046 × 10−6	1.2015 × 10−6	4.3907 × 10−6	1.9749 × 10−6
Corrosion rate (mm/a)	0.022058	0.020888	0.005731	0.008968	0.014169	0.051777	2.328900