Polypyrrole Bilayer Coating Doped with Phosphoric Acid and Salicylic Acid and its Efficiency for Protecting Carbon Steel against Corrosion. Rev. Proc. Q. [Internet]. 2023 Dec. 5 [cited 2026 Oct. 25];17(34):93. Available from: https://ojs.rpqsenai.org.br/index.php/rpq/article/view/702