Electrochemical and Computational Investigations on the Corrosion Inhibition of X65 Steel by 2-Phenylbenzimidazole in H2SO4 Solution

Tan J., Guo L., Wu D., Duan X., Leng S., Obot I. B., ...Daha Fazla

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE, cilt.15, sa.9, ss.8837-8848, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 15 Sayı: 9
  • Basım Tarihi: 2020
  • Doi Numarası: 10.20964/2020.09.52
  • Dergi Adı: INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.8837-8848
  • Anahtar Kelimeler: Corrosion, X65 steel, Acid inhibitor, Electrochemistry, Weight loss, CARBON-STEEL, COPPER CORROSION, MILD-STEEL, INDAZOLE DERIVATIVES, IONIC LIQUIDS, SCHIFF-BASES, Q235 STEEL, ACID, SURFACE, SODIUM
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

In this work, we studied 2-phenylbenzimidazole (PBI) as a corrosion inhibitor for X65 steel in H2SO4 medium. The inhibition performance of PBI for X65 steel were studied using weight loss, electrochemical experiments, surface analysis and computational modelings. The results indicate that PBI has a superior anti-corrosion performance and belongs to modest cathodic-type corrosion inhibitor. The adsorption behavior of PBI molecule on steel conforms to Langmuir adsorption model. The adsorption type is a combination of physical and chemical adsorption. SEM morphology analysis can prove inhibition performance of PBI. DFT calculation and molecular dynamics simulations have revealed active adsorption sites and adsorption configuration of PBI molecule on Fe substrate.