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

Table 2

Percentage of inhibitor efficiency (% I.E.) for corrosion of Al in alkaline media in presence of inhibitors. [OH⁻] = 4.0 and I = 4.0 mol dm⁻³ at 30°C.

[Inhibitor]; mol dm^−3	0.01	0.02	0.03	0.04
Alginate	36.54	46.15	57.69	69.23
Pectates	51.92	61.54	71.15	78.85