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Peer-reviewedCC BYCorrosion Science

Study of cathodic reactions in defects of thermal spray aluminium coatings on steel in artificial seawater

  • Rosa Grinon-Echaniz
  • Philippe Refait
  • Marc Jeannin
  • René Sabot
  • Shiladitya Paul
  • Rob Thornton
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Abstract

Electrochemical and surface characterization techniques were used to study the corrosion protection provided by Thermal Spray Aluminium (TSA) coatings on carbon steel substrates with and without defects in artificial seawater. Results showed that the presence of defects accelerates the formation of a protective corrosion product layer on the TSA coating. Voltammetry and Electrochemical Impedance Spectroscopy (EIS) revealed that both calcareous deposits and aluminium corrosion products hindered diffusion of dissolved O2. Analysis of corrosion products by SEM-EDX, μ-Raman spectroscopy and XRD revealed Al oxides/hydroxides and hydrotalcite on top of TSA coating and a bilayer of calcareous deposits on the defect area.

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Cite

BibTeXRIS
BibTeX
@article{grinonechaniz2026study,
  title = {{Study of cathodic reactions in defects of thermal spray aluminium coatings on steel in artificial seawater}},
  author = {Rosa Grinon-Echaniz and Philippe Refait and Marc Jeannin and René Sabot and Shiladitya Paul and Rob Thornton},
  journal = {Corrosion Science},
  year = {2026},
  month = sep,
  doi = {10.1016/j.corsci.2021.109514},
  url = {https://univ-rochelle.hal.science/hal-05752251v1},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - Study of cathodic reactions in defects of thermal spray aluminium coatings on steel in artificial seawater
AU  - Rosa Grinon-Echaniz
AU  - Philippe Refait
AU  - Marc Jeannin
AU  - René Sabot
AU  - Shiladitya Paul
AU  - Rob Thornton
PY  - 2026
DA  - 2026/09/16
JO  - Corrosion Science
DO  - 10.1016/j.corsci.2021.109514
UR  - https://univ-rochelle.hal.science/hal-05752251v1
AB  - Electrochemical and surface characterization techniques were used to study the corrosion protection provided by Thermal Spray Aluminium (TSA) coatings on carbon steel substrates with and without defects in artificial seawater. Results showed that the presence of defects accelerates the formation of a protective corrosion product layer on the TSA coating. Voltammetry and Electrochemical Impedance Spectroscopy (EIS) revealed that both calcareous deposits and aluminium corrosion products hindered diffusion of dissolved O2. Analysis of corrosion products by SEM-EDX, μ-Raman spectroscopy and XRD revealed Al oxides/hydroxides and hydrotalcite on top of TSA coating and a bilayer of calcareous deposits on the defect area.
SN  - 0010-938X
SN  - 1879-0496
ER  -