Author(s):
1. Nebojša Vasiljević, Univerzitet u Istočnom Sarajevu, Tehnološki fakultet Zvornik, Republic of Srpska, Bosnia and Herzegovina
2. Marija Mitrović, Faculty of Technology - University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina
3. Regina Fuchs-Godec, Faculty of Chemistry and Chemical Engineering, University of Maribor, Slovenia
4. Bojan Gorančić, University of East Sarajevo, Faculty of Technology, Republic of Srpska, Bosnia and Herzegovina
5. Milorad Tomić, University of East Sarajevo, Faculty of Technology, Republic of Srpska, Bosnia and Herzegovina

Abstract:
In this paper, the inhibitory effect of thyme extract on the corrosion of two types of steel in 3% NaCl solution was investigated. Steel samples were immersed in 3% NaCl solution without inhibitor and solutions with 0.5, 1.0 and 1.5 g/L inhibitor (thyme extract), and the exposure times to the corrosive environment were 2, 4, 6, 8, 24, 48 and 168 hours. MINITAB 21 software was used to optimize and process the experimentally obtained results, and the analyzed parameters were corrosion rate (Km-), corrosion depth index (π) and inhibitor efficiency (z). It was found that the use of inhibitors significantly reduces the corrosion rate and increases the protection efficiency, and the highest efficiency (z>85%) is at an inhibitor concentration of 1.5 g/L after 48 and 168 hours. Steel 2 showed higher resistance in the absence of inhibitors, while the addition of inhibitors significantly reduced the corrosion rate of both steels.

Key words:
green inhibitors,NaCl solution,statistical analysis,steel corrosion,thyme extract,green inhibitors,NaCl solution,statistical analysis,steel corrosion,thyme extract

Thematic field:
SYMPOSIUM A - Science of matter, condensed matter and physics of solid states

Date of abstract submission:
01.07.2025.

Conference:
Contemporary Materials 2025 - Savremeni Materijali

Applied paper from author