Mr. Dimitrios Skaltsas
,
NATIONAL TECHNICAL UNIVERSITY OF ATHENS/ School of Naval Architecture and Marine Engineering, Athens, Greece
Prof. Christos Papadopoulos
,
NATIONAL TECHNICAL UNIVERSITY OF ATHENS/ School of Naval Architecture and Marine Engineering, Athens, Greece
Dr. Chara Sarafoglou
,
NATIONAL TECHNICAL UNIVERSITY OF ATHENS/ School of Naval Architecture and Marine Engineering, Athens, Greece
Mr. Petros Ioannou
,
MIRTEC S.A.,, Schimatari, Greece
Dr. Konstantina Andreouli
,
MIRTEC S.A.,, Schimatari, Greece
Mr. Ilias Georgiopoulos
,
MIRTEC S.A.,, Schimatari, Greece
Mr. Christos Zotiadis
,
Laboratory of Polymer Technology, School of Chemical Engineering, National Technical University of Athens, Zografou Campus, Athens, Greece
Dr. Dimitrios Korres
,
Laboratory of Polymer Technology, School of Chemical Engineering, National Technical University of Athens, Zografou Campus, Athens, Greece
Prof. Stamatina Vouyiouka
,
Laboratory of Polymer Technology, School of Chemical Engineering, National Technical University of Athens, Zografou Campus, Athens, Greece
The study of self-lubricant coatings is a rapidly developing research field that is expected to address major issues arising from operation under high loads and thermal stresses of machine parts. It is of utmost importance that various critical tribological pairs such as crankshaft bearings, piston rings, etc. maintain their integrity, thus contributing to the engines efficient and reliable operation for long periods of time. Therefore, a choice of high-strength metals is required, with special treatments and/or coatings in combination with sufficient lubrication.
In the present study, liquid lubricants encapsulated in polymeric carriers were incorporated in ceramic-metal matrices for the production of composite coatings by Atmospheric Plasma Spraying. Aspects concerning the protection of the core/shell topology of the capsules during their flight through the high temperature plasma flame, the maintenance of their integrity at impact with the substrate with high kinetic energy, their homogeneous dispersion within the coating mass, thermal spray deposition parameters adjustment and optimization are thoroughly discussed.
Coating properties such as roughness, friction, adhesion strength, and wear behavior were also investigated. Microstructural characteristics and friction-wear behavior were found to be critical to the durability of coating.
