INVESTIGATION OF THE CHEMICAL CONVERSIONS OF SYNTHETIC LUBRICANT CONTAINING ECOLOGICAL ANTIWEAR ADDITIVE PROCEEDING UNDER FRICTION CONDITIONS
Journal Title: Tribologia - Year 2013, Vol 248, Issue 2
Abstract
Chemical conversions of PAO – and ester-based synthetic lubricants containing ecological antiwear additives of vegetable origin under different friction conditions were investigated. Rubbing tests were performed using a four-ball machine and ball-on-disk tester. Products of tribochemical reactions of the lubricants’ components have been investigated by gas chromatography coupled with mass spectrometry. It has been concluded that the chemical changes lead to the formation of a variety of compounds that influence the antiwear efficiency of the lubricants.
Authors and Affiliations
Monika Makowska, Elżbieta Siwiec
JOINT CARTILAGE LUBRICATION WITH PHOSPHOLIPID BILAYER
The surface of an articular cartilage human joint, coated with phospholipid bilayers or multi-layers, plays an important role in the surface-active phospholipid lubrication, friction, and wear during human limb movement....
THE APPLICATION OF TEST POWER TO DETERMINATION OF THE TESTS NUMBER IN TRIBOLOGICAL RESEARCH
The article proposes a procedure for the determination of the number of test repetitions that enables the evaluation the value of investigated variable with the assumed precision on established the credibility level. As...
RHEOLOGICAL PROPERTIES OF ANTIWEAR BIOADDITIVES FROM VEGETABLE OILS
The paper presents the results from tribological and rheological tests of model lubricant compositions containing bioadditives prepared from renewable materials such as vegetable oils. It was found that the working value...
BADANIA FRETTING-KOROZJI MATERIAŁÓW STOSOWANYCH NA ELEMENTY ENDOPROTEZ STAWU BIODROWEGO
Trwałość eksploatacyjna endoprotez stawu biodrowego zależna jest między innymi od intensywności procesów niszczenia elementów połączeń kinematycznych wywołanych procesami korozji frettingowej. W artykule przedstawiono wy...
ANALYSIS OF THE TRIBOLOGY PROCESSES OF CONTROL VALVES OF MEDIUM SPEED MARINE INTERNAL COMBUSTION ENGINES
The article presents an analysis of phenomena of selected elements of piston internal combustion engines cooperating with the combustion chamber and issues related to tribological aspects. It shows an attempt to assess t...