Analysis of tribological properties
of lubricating gear oil with nano
silica particles

K. Prabu, B. Nalini, B. Suresh, M. Sekar
Journal of Achievements in Materials and Manufacturing Engineering
2016; 79 (2): 59-62
ICID: 1231059
Article type: Original article
 
 
Purpose: Lubricants prepared with metal oxide nanoparticle additives are found to have
better tribological properties. In this work the widely used commercial SN lubricating oil is
added with SiO2 nanoparticle and the tribological characteristics are studied. Wear tests
were conducted on plain oil and oil with nanosized silica (SiO2) additives using a four ball
tribo-tester.
Design/methodology/approach: The wear images of the ball specimens were analyzed
using confocal microscope to measure the topography of the wear parameters such as wear
scar diameter, depth of wear, angle of the wear.
Findings: It is found that the gear oil with silica nanoparticles is found to have improved
properties. Results show a considerable reduction in the values of wear scar diameter, wear
angle and wear depth for the gear oil added with SiO2 nanoparticles of 0.4 wt. %.
Originality/value: In the work carried out, a new innovative technological approach to
analyze the tribological properties of lubricating oil by finding the wear scar diameter, wear
angle and wear depth is reported.
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