Influence of Nitrogen Content on the Corrosion Behavior of Powder Metallurgy Nickel-Free Austenitic Stainless Steel

Figure 4

Corrosion surface morphology of the HNNS samples after their immersion in a 6% FeCl₃ solution at 55°C for 72 (h): (a) 1.19 wt.% (N), (b) 1.28 wt.% (N), and (c) 1.37 wt.% N.

(a)

(b)

(c)