Fig. 3: OCP and Tafel Analysis of Coated Substrates. | npj Materials Degradation

Fig. 3: OCP and Tafel Analysis of Coated Substrates.

From: Mechanistic origins of corrosion protection of aluminum alloys by graphene/polyetherimide nanocomposite coatings

Fig. 3

a Evolution of OCP measured 100 days for abraded AA 7075, five benchmark polymeric coatings, and four PEI and UFG/PEI coatings. The coated substrates have been immersed in 3.5 wt.% aqueous NaCl solutions under ambient conditions. b Tafel plot of AA 7075, three epoxy formulations, PEEK, PEI, and as-cast PEI. c Tafel plot of as-cast PEI, and 1, 3, and 5 wt.% UFG/PEI formulations.

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