Effects of Alloying Elements (Cr, Mn) on Corrosion Properties of the High-Strength Steel in 3.5% NaCl Solution

Table 4

Summaries on corrosion potentials, Tafel slopes, and corrosion rates of the experimental alloys from analysis of cathodic polarization curves in Figure 2(b).

Alloys	Immersion time
	1 day			56 days
	Corros. pot. (VSCE)	Tafel slope (βc)	icorr (μA/cm^2)	Corros. pot. (VSCE)	Tafel slope (βc)	icorr (μA/cm^2)
REF	−0.679	−0.557	27.8	−0.652	−0.209	25.1
18Mn	−0.758	−0.557	29.5	−0.704	−0.511	31.6
18Mn5Cr	−0.608	−0.288	16.2	−0.577	−0.345	13.4