doc. dr. Marko Polajnar
Phone
+386 1 4771 467
Short biography
Marko Polajnar was born in 1985 in Ljubljana. After graduating from high school in 2004, he enrolled in the Faculty of Mechanical Engineering in Ljubljana and completed the study in 2010 with a thesis entitled Influence of surface energy and wetting on friction coefficient in lubricated contacts under the supervision of Prof. Dr. Mitjan Kalin. For his research work entitled Slippage of lubricant over non-fully wetted surfaces he recieve faculty Prešeren's award. After the graduating he was employed as a researcher at the Faculty of Mechanical Engineering in Ljubljana. In december 2010 he was elected to title an assistant. In the Laboratory for tribology and interface nanotechnology. Within his PhD study under the mentorship of prof. dr. Mitjan Kalin, he continued with investigation of the solid-liquid interactions, slippage of lubricant over solid surface and their influence on lubrication of tribological contacts and in 2015 defend his PhD thesis entitled The effect of lubricant-surface slip on tribological properties of lubricated contacts.
Reference Projects:
- InterEHL - Novel design of EHL contacts by employing solid-liquid interface phenomena (2019 - 2021)
- GreenSTAMP - Nano-engineered Green lubrication technology for sustainable high-performance stamping (2018 - 2021)
- E-maintenance of electro-mechanical drives: prognostics and health management solutions under non-stationary operating conditions (EMAINT) (2016 - 2019)
- MATERA SiNACERDI - Nanostructured composite materials and reinforced ductile iron for high wear applications (2011 - 2014)
Publications
- Wear of hydraulic pump with real particles and medium test dust
N. Novak, A. Trajkovski, M. Polajnar, M. Kalin, F. Majdič, Wear 532-533 (2023) 205101 1-13 - Base lubricants for green stamping: The effects of their structure and viscosity on tribological performance
M. Polajnar, L. Čoga, M. Kalin, Friction 11 (2023) 1741-1754 - Study on the influence of interfacial slip on the lubrication performance of a step slider bearing
Z. G. Jing, F. Guo, W. Jin, M. Kalin, M. Polajnar, Tribology International 176 (2022) 107822 1-9 - Elasto-hydrodynamic friction changes on steel surfaces arising from the modified surface energy of the steel due to additive boundary films
M. Polajnar, B. Thiebaut, F. Jarnias, M. Kalin, Tribology international 164 (2021) 107203 1-10 - Green Tribology for the Sustainable Engineering of the Future
M. Kalin, M. Polajnar, M. Kus, F. Majdič, Strojniški vestnik - Journal of Mechanical Engineering 65 (2019) 11-12, 709-727. - Friction and wear performance of functionally graded ductile iron for brake pads
M. Polajnar, M. Kalin, I. Thorbjornsson, J.T. Thorgrimsson, N. Valle, A. Botor-Probierz, Wear 382–383 (2017) 85–94. - High‐speed optical imaging of liquid film flow and liquid macro‐slip over free surfaces with different surface energies
M. Polajnar, B. Bizjan, B. Širok, M. Kalin, Lubrication Science (2017) 0: 1-10. - Effect of the slide-to-roll ratio and the contact kinematics on the elastohydrodynamic friction in diamond-like-carbon contacts with different wetting behaviours
M. Polajnar, M. Kalin, Tribology Letters 60 (2015) 1-10. - The wetting of steel, DLC coatings, ceramics and polymers with oils and water: The importance and correlations of surface energy, surface tension, contact angle and spreading
M. Kalin, M. Polajnar, Applied Surface Science 293 (2014) 97-108. - The Effect of Wetting and Surface Energy on the Friction and Slip in Oil-Lubricated Contacts
M. Kalin, M. Polajnar, Tribology Letters 52 (2013) 185-194. - The correlation between the surface energy, the contact angle and the spreading parameter, and their relevance for the wetting behaviour of DLC with lubricating oils
M. Kalin, M. Polajnar, Tribology International 66 (2013) 225-233. - more
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