Abstracts

Hlavn npln tto dizertan prce je vzkum a vvoj nov povrchov vrstvy pro kluzn loiska na bzi pevnch lubrikant v polyamid-imidov polymern matrici se zlepenmi tribologckmi vlastnostmi. Podklady pro materilovou kompozici vzely z expertzy komern dostupnho povlaku, respektive jeho povrchovou analzou v meznch operanch podmnkch. Charakterizace maznho oleje ped a po tribotestovn spolen s detailn povrchovou analzou dala podmnky pro vznik materilov formulace. Dal st prce se zabv studiem ppravy a vvojem aplikanho nanen s ppravou polymern smsi. Nakonec je popsna studie vlivu sulfidu molybdeniitho a grafitu, jakoto pevnch lubrikant pro zlepen tecch vlastnost a hydroxidu vpenatho pro potenciln zpepen otruvzdornosti vslednho povrchu pro palikaci kluznch loisek.; The aim of this thesis is the research and characterisation of new sliding bearing overlay with advanced tribological properties based on the polyamide-imide matrix and solid lubricants. The background for the material composition came from the joint initial expertise of commercial coating layer, respectively its surface observation under boundary operational conditions which provided input for improved wear and friction characteristics. Oil characterisation before and after tribotesting and detailed surface chemistry analysis was performed to investigate polymer coating behaviour in stressed lubricated condistions. Further development of coating technique with preparation of newly formulated paint is introduced. Finally, the developed PAI coating with MoS2 and graphite as lubricants for frictional improvement and calcium hydroxide as potential wear improvement additive were studied and evaluated for bearing application.Advisors/Committee Members: Havlica, Jaromr (advisor).