Synthesis and tribological investigation of compressor's linertribo pair material under the influence of biodegradable compressor oil

The present investigation is intended to synthesis biodegradable compressor oil for reciprocating air compressors and analyses the tribological behavior of liner-ring tribo pair material under the influence of new formulations. A pin-on-disc tribometer was used to perform the tribological investigations. EN 31 steel and EN-JL 1020 was selected as disc and pin material, respectively. An ultrasonication based transesterification process was used to formulate a biodegradable compressor oil. TGA and DSC analysis was performed to examine the thermos-oxidative stability of compressor oil. The newly formulated bio compressor oil showed better tribological parameters in terms of coefficient of friction, wear and specific wear rate as compared with SAE 30 grade compressor oil. SEM and EDAX analysis of testing pin surfaces proved that the worn surfaces were smooth with bio compressor oil. (paper)