OPTIMIZATION OF TITANIUM OXIDE NANOPARTICLE ENRICHMENT ON THE TRIBOLOGICAL PROPERTIES OF SANDBOX BIO-LUBRICANT
Abstract
Improvement of Lubricant properties is encouraged in production industries for enhanced performance. In order to achieve this, many methods and materials have been employed with room for further studies. This study investigated the effect of titanium oxide nanoparticle additive on the tribological properties of sandbox bio-lubricant. Titanium oxide nanoparticle-enriched sandbox bio-lubricant was developed by adding varying concentrations of the nanoparticle to sandbox lubricant. Central composite design was employed for the experimental design and optimization. The lubricant was enriched with nanoparticle concentration of 0 wt%, 0.75 wt%, and 1.50 wt %. The parameters values used for the evaluation were: load (2 N, 5 N, 8 N) and speed (150 rpm, 200 rpm, 250 rpm). Effects of these values on wear rate, friction coefficient and flash temperature parameter were evaluated. The lowest values of coefficient of friction and wear rate were obtained at a speed of 200 rpm and concentration of 0.75 wt% with 2 N load, while the highest value of flash temperature parameter was obtained at a speed of 200 rpm, concentration of 0.75 wt% and 8 N load. The optimal parameters combinations for minimum coefficient of friction and wear rate as well as maximum flash temperature were: 8.0N load, 199.4949 rpm speed and 0.7121wt% concentration. The overall results revealed that titanium oxide nanoparticle added to sandbox lubricant improved the tribological properties of the lubricant by increasing the anti-friction and anti-wear capacity of the lubricant. This showed the potential of titanium oxide nanoparticle as additive for bio-lubricant production.
Keywords
Sandbox seed oil, Lubrication, Wear rate, Friction coefficient
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