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

Figure 10

Schematic diagrams of rust layers formed on REF (a), 18Mn (b), and 18Mn5Cr (c) in 3.5% NaCl solution for 56 days at 60°C, where solid circle, M, and δ indicate goethite, magnetite, and feroxyhyte, respectively.

(a)

(b)

(c)