Intergranular Corrosion of Low Cr Ferritic Stainless Steel 429 Evaluated by the Optimized Double Loop Electrochemical Potentiokinetic Reactivation Test

Figure 4

Effect of potential scanning rate in the DL-EPR test. (a) Influence on values (0.5 M H₂SO₄ + 0.0001 M KSCN, °C); (b)–(f) micrographs of FSS 429 aging at 550°C for 1 h after test, (b) 30 mV/min, (c) 60 mV/min, (d) 100 mV/min, (e) 150 mV/min, and (f) 300 mV/min.

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