A Revisit to the Corrosion Inhibition of Aluminum in Aqueous Alkaline Solutions by Water-Soluble Alginates and Pectates as Anionic Polyelectrolyte Inhibitors

Figure 3

Plots of evolved 𝑉_H2 versus time for corrosion of Al in alkaline media in absence of inhibitors at 30°C. [OH⁻]: (𝐴)=2.0; (𝐵)=3.0; (𝐶)=4.0 mol dm⁻³.