Erosion-corrosion of electrodeposited superhydrophobic Ni-Al2O3 nanocomposite coatings under jet saline-sand slurry impingement

A. H. Noorbakhsh Nezhad, E. Mohammadi Zahrani, A. M. Alfantazi

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

For the first time, this study developed a detailed insight into the correlation between superhydrophobicity, erosion-corrosion resistance, and reinforcing phase amounts of Ni-Al2O3 nanocomposite coatings electrodeposited on Cu. Erosion-corrosion was electrochemically investigated at a 90° impact angle via a jet-impingement slurry erosion setup with erodent particles primarily under 100 µm. The preferred crystallographic growth orientation was along (220). No synergy emerged between superhydrophobicity and erosion-corrosion resistance. Ni-(2.9 wt%) Al2O3 resistance to erosion-corrosion outperformed Ni-(0, 2.0, 2.4 wt%) Al2O3. Depend on the duration of slurry exposure, either kinetic or a mixed kinetic and diffusion control mechanism was predominant at the OCP.

Original languageBritish English
Article number110095
JournalCorrosion Science
Volume197
DOIs
StatePublished - 1 Apr 2022

Keywords

  • A. Metal matrix composites
  • A. Nickel
  • B. EIS
  • B. Erosion
  • B. SEM
  • C. Electrodeposited films

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