This work describes how different additives and base oils influence the oil film formation and lubrication behaviour due to chemical and physical interactions with DLC coatings in different regimes. Chemical activity of various DLC coatings with low- and high-SAPS oils were investigated in boundary lubrication regime. In addition, phenomena such as wetting and surface energy are discussed and slip at the oil-DLC interface is evidenced in hydrodynamic regime. The work shows how the Stribeck curve and lubrication regimes can be controlled by using various DLC coatings, additives and base oils.
B.04 Guest lecture
COBISS.SI-ID: 11818523Surfaces and surface roughness are discussed from the mechanical or engineering perspective. The notion of surface roughness and how it is measured is explained as well as how the acquired data is processed in order to characterize the surfaces with appropriate surface parameters. Furthermore, the correlations of surface roughness to contact area and plasticity index are discussed, in respect that they are both important for the behaviour of material pair in contact. Some basic concepts behind friction and causes for this phenomenon are also presented and an explanation is given on how it depends on the interaction between the surfaces and their properties and therefore on how it correlates to surface roughness.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 12182299In 2011, Professor. Dr. Mitjan Kalin took over co-editorship of journal Lubrication Science with Prof. Dr. Hugh Spikes. In this year he became editor in chief. The journal is published since 1984 and is designed to meet the information requirements of lubricant professionals whose primary concern is the design, formulation, and performance of lubricants and their additives in tribological systems, whichever field of interest - commercial, government, academic, or pure research - they may be involved with.
C.04 Editorial board of an international magazine
COBISS.SI-ID: 2144539