THE INFLUENCE OF NANOPARTICLES ON THE LUBRICATING PROPERTIES OF RAPESEED OIL

摘要

Nowadays, many attempts are made to solve tribological issues related to lubricated contacts by the introduction of metallic and non-metallic nanopowders as additives. The main objective related with the usage of magnetic nanoparticles like Fe, Co, Ni in the tribocontact is to minimize friction. Another hypothesis is that these particles penetrate local microcracks thereby arresting them or even forming a protective tribolayer thus controlling wear and local temperature increase (this paper should appear in the introduction). Some other theories related to tribofilm formation and rolling effects were also reported. The present paper explores the effect of Fe based micro-ano- particle additions on the tribological properties of lubricating oils when subjected to unidirectional and bi-directional sliding conditions. The ranking of various unmodified (Base oil, rapeseed oil and mineral oil) and modified oils (with Fe particles) based on tribological peoperties was done by measuring friction and quantifying wear loss on the sliding surfaces. Further, a comparison between Fe micro-ano-particle blended oil and commercially known glycerol monooleate (GMO) additive is also reported.