K3-en / PhysChemLabCorrSGCoatingsRight

Research programme

Corrosion protection

In the field of corrosion protection our research is focused on the following topics:


Sol-gel coatings

In the last two decades sol-gel coatings have been extensively studied for corrosion protection applications. According to the definition, sol-gel is every process which starts from the precursor’s solution and goes through the stage of sol and gel. Sol is a stable suspension of colloidal particles within a liquid, and gel is a rigid and interconnected network. Precursors can be inorganic and organic, nowadays usually hybrid sol-gels are explored which consist of both inorganic and organic precursors. Sol-gel can be applied to metal surface using various techniques, such as dipping, spinning, spraying. Once deposited onto a metal surface, sol-gel coating is subjected to thermal treatment (or curing) for final condensation and densification.

Hybrid sol-gel coatings used in corrosion protection act as barrier, i.e. prevent the penetration of electrolyte to underlying substrate. In real applications, barrier protection is often not sufficient to resist corrosion attack. Once damaged, coating will become permeable to aggressive medium eventually leading to corrosion of substrate. Once corrosion process begins, it cannot be stopped. One of the solutions is to incorporate inhibitors, for example cerium salts, into sol-gel matrix which would then contribute the active recovery necessary to prolong the protection.

Sol-gel coatings
Figure:(a) Potentiodynamic polarization curves recorded in 0.1 M NaCl, after 1 h stabilization for bare AA7075-T6 aluminium alloy and coated with GTS and GTS-Ce coatings. dE/dt=1 mV/s. (Reprinted from the publication by U. Tiringer, I. Milošev, A. Durán, Y. Castro, J. Sol-Gel Sci. Technol., 2018, 85, 546–557). (b) Images of uncoated aluminium alloy 7075-T6 and coated with GTS and GTS-Ce+GTS coatings during an immersion test in 0.1 M NaCl. Images were takes at different times of immersion up to 50 days. (Reprinted from the publication by U. Tiringer, A. Durán, Y. Castro, I. Milošev, J. Electrochem. Soc., 2018, 165, C1–C13).

Publications related to sol-gel coatings

  1. I. Milošev, D. Hamulić, P. Rodič, C. Carrière, S. Zanna, H. Budasheva, D. Korte, M. Franko, D, Mercier, A. Seyeux, P. Marcus, Appl. Surf. Sci., 2022, 574, 151578-1–151578-18.

  2. D. Hamulić, P. Rodič, I. Milošev, Prog. Org. Coat., 2021, 150, 105982-1–105982-13.

  3. R. del Olmo, U. Tiringer, I. Milošev, P. Visser, R. Arrabal, E. Matykina, J. M. C. Mol, Surf. Coat. Technol., 2021, 419, 127251-1–127251-14.

  4. U. Tiringer, J. P. B. van Dam, S. T. Abrahami, H. Terryn, J. Kovač, I. Milošev, J. M. C. Mol, Surf. Interfaces, 2021, 26, 101417-1–101417-12.

  5. D. Hamulić, P. Rodič, I. Milošev, Prog. Org. Coat., 2020, 150, 105982.

  6. P. Rodič, M. Lekka, F. Andreatta, L. Fedrizzi, I. Milošev, Prog. Org. Coat., 2020, 147, 105701.

  7. P. Rodič, R. Cerc Korošec, B. Kapun, I. Milošev, Polymers, 2020, 12, 948.

  8. D. Hamulić, P. Rodič, M. Poberžnik, M. Jereb, J. Kovač, I. Milošev, Coatings, 2020, 10, 172 (20 strani)

  9. U. Tiringer, B. Mušič, D. Zimerl, G. Šekularac, S. Stavber, I. Milošev, J. Non-Cryst. Solids, 2019, 510, 93–100.

  10. U. Tiringer, A. Durán, Y. Castro, I. Milošev, J. Electrochem. Soc., 2018, 165, C1–C13.

  11. P. Rodič, J. Katić, D. Korte, P.M. Desimone, M. Franko, S.M. Ceré, M. Metikoš-Huković, I. Milošev, Metals, 2018, 8, met8040248.

  12. U. Tiringer, I. Milošev, A. Durán, Y. Castro, J. Sol-Gel Sci. Technol., 2018, 85, 546–557.

  13. P. Rodič, I. Milošev, M. Lekka, F. Andreatta, L. Fedrizzi, Prog. Org. Coat., 2018, 124, 286–295.

  14. P. Rodič, I. Milošev, J. Electrochem. Soc., 2014, 161, C412–C420.

  15. P. Rodič, A. Mertelj, M. Borovšak, A. Benčan, D. Mihailović, B. Malič, I. Milošev, Surf. Coat. Technol., 2016, 286, 388–396.

  16. P. Rodič, J. Iskra, I. Milošev, J. Non-Cryst. Solids, 2014, 396–397, 25–35

  17. P. Rodič, J. Iskra, I. Milošev, J. Sol-Gel Sci. Technol., 2014, 70, 90–103.

  18. I. Santana, A. Pepe, E. Jimenez-Pique, S. Pellice, I. Milošev, S. Ceré, Surf. Coat. Technol., 2015, 265, 106–115.

  19. I. Milošev, Ž. Jovanović, J.B. Bajat, R. Jančić-Heinemann, V.B. Mišković-Stanković, J. Electrochem. Soc., 2012.


Projects related to sol-gel coatings