Thesis supervisor: Tamás Kristóf
Location of studies (in Hungarian): University of Pannonia, Faculty of Engineering, Center for Natural Sciences, Corrosion Research Group Abbreviation of location of studies: PETTK
Description of the research topic:
Corrosion inhibitors are additives used to significantly slow down the degradation of structural materials (mainly metals), often added to the fluid in contact with the structural material. Many corrosion inhibitors are effective only at higher concentrations and most of the conventional constituent substances of the inhibitor mixture products are harmful to the environment. It is therefore important to search for environmentally friendly and nontoxic corrosion inhibitors. Some organic materials, e.g. certain plant extracts have already found application as green corrosion inhibitor.
The efficiency and protection mechanism of such corrosion inhibitors will be investigated by conventional direct and alternative current (DC and AC) as well as modern transient techniques of electrochemistry. Recent DC and AC evaluation methods developed in our laboratory [1, 2] allow us to determine more accurately the principal properties (e.g. corrosion current, polarization resistance, double layer capacitance) of the corrosion systems under study. These will help and speed up the characterization of the potential inhibitory substances. As the phenomena around us are frequently not attainable in sufficient detail (down to the level of atoms and molecules) by means of experimental techniques, we will also use molecular modeling and atomistic simulations for studying the protection mechanisms. The molecular details of the mechanisms of adsorption inhibitors (one of the largest group of inhibitors), e.g., are often poorly understood. Our classical molecular simulations (see, e.g. [3]) provide insights into the structure of the protective surface layer and the molecular motions in it.
[1] Z. Lukács, D. Baccilieri, J. Hancsók, T. Kristóf: A dispersion-invariant model of the electrochemical impedance. Electrochimica Acta 390 (2021) 138828.
[2] Z. Lukács, T. Kristóf: Linear transformations of the Butler-Volmer equation. Electrochemistry Communications 154 (2023) 107556.
[3] É. Makó, Zs. Sarkadi, Z. Ható, T. Kristóf: Characterization of kaolinite-3-aminopropyl-triethoxysilane intercalation complexes. Applied Clay Science 231 (2023) 106753.
Number of students who can be accepted: 2
Deadline for application: 2024-06-14
2024. IV. 17. ODT ülés Az ODT következő ülésére 2024. június 14-én, pénteken 10.00 órakor kerül sor a Semmelweis Egyetem Szenátusi termében (Bp. Üllői út 26. I. emelet).
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