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Projects / Programmes source: ARIS

Influence of surface treatment on tribological properties of lubricated hard coatings.

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Research activity

Code Science Field Subfield
2.11.03  Engineering sciences and technologies  Mechanical design  Special development know-how 

Code Science Field
T115  Technological sciences  Medical technology 
Keywords
hard coatings, modification, surface characteristics, adsorption properties, tribological properties
Evaluation (rules)
source: COBISS
Evaluation of bibliographic research performance indicators according to ARIS methodology
Citations Citations for bibliographic records in COBIB.SI that are linked to records in citation databases
source: WoS source: Scopus source: COBISS
Researchers (7)
no. Code Name and surname Research area Role Period No. of publications
1.  19753  PhD Lidija Fras Zemljič  Textile and leather  Researcher  2002 - 2004  528 
2.  04629  PhD Tatjana Kreže  Textile and leather  Researcher  2002 - 2004  278 
3.  19238  PhD Boris Kržan  Mechanical design  Researcher  2002 - 2004  137 
4.  15269  PhD Bojan Podgornik  Materials science and technology  Head  2002 - 2004  1,130 
5.  10575  PhD Simona Strnad  Textile and leather  Researcher  2002 - 2004  370 
6.  19047  PhD Anton Vezjak  Mechanical design  Researcher  2002 - 2004  26 
7.  17583  Vida Žižek    Researcher  2002 - 2004  46 
Organisations (2)
no. Code Research organisation City Registration number No. of publications
1.  0782  University of Ljubljana, Faculty of Mechanical Engineering  Ljubljana  1627031  29,252 
2.  0795  University ob Maribor, Faculty of mechanical engineering  Maribor  5089638010  23,914 
Abstract
In the last couple of years a large number of eminent researchers and institutes from the field of surface science and tribology performs extensive research on development and characterization of hard protective coatings. Common goal of all this investigations is to successfully use hard protective coatings in the field of machine elements, operating under normal and extreme operating conditions. The aim of this project will be the study of adsorption mechanism of formulated bio-degradable esters on the surface of hard coated steel surfaces. In this study, hard coatings applicable in the case of machine elements operating under small and large sliding speeds and loads will be used. For lubrication of steel surfaces with mineral oil, boundary film formation mechanism is well known. On the other hand, the influence of surface potential, surface energy and surface charge on the formation of adsorption lubrication film is still not fully investigated. However, there is almost no data how this parameters influence on the formation of lubricating film in the case of coated surfaces. In general, hard coatings improve tribological properties of contact surfaces under dry conditions. However, due to their inertness the ability to form boundary lubrication film is greatly reduced. In this project surface and tribological properties of selected hard coatings will be investigated under dry and lubricating conditions, using base and additivated bio-degradable synthetic and natural esters. During tribological tests coefficient of friction will be measured as a function of viscosity, pressure and sliding speed in the contact. Based on results and knowledge obtained, we will try to improve adsorption properties of hard coatings and thus improve boundary lubrication properties in the tribological contact under different operating conditions.
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