Corrosion inhibition of 2024-T3 aluminum alloy in 3.5% NaCl by thiosemicarbazone derivatives

B. G. Prakashaiah, D. Vinaya Kumara, A. Anup Pandith, A. Nityananda Shetty, B. E. Amitha Rani

Research output: Contribution to journalArticlepeer-review

79 Citations (Scopus)

Abstract

Three thiosemicarzone derivatives, namely (E)-2-(2-hydroxybenzylidene) hydrazinecarbothioamide(MHC), (E)-2-(2,4-dihydroxybenzylidene)hydrazinecarbothioamide (DHC) and (E)-2-(2,3,4-trihydroxybenzylidene)hydrazinecarbothioamide (THC) were synthesized and their corrosion inhibition action on 2024-T3 aluminum alloy was studied in 3.5% NaCl solution. The surface morphology and surface composition of the corroded alloy were examined using FESEM, 3D profilometry, EDX spectroscopy and X-ray photoelectron spectroscopy. The synthesized inhibitors were found to provide corrosion protection on AA2024-T3 by forming an adsorbed layer of the complex on the alloy surface. They exhibited inhibition efficiency in the order, MHC < DHC < THC. Quantum chemical calculations corroborated the experimental results.

Original languageEnglish
Pages (from-to)326-338
Number of pages13
JournalCorrosion Science
Volume136
DOIs
Publication statusPublished - May 15 2018
Externally publishedYes

Keywords

  • A. Alloy
  • A. Aluminum
  • B. EIS
  • B. Polarization

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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