TypeArticle
TitlePreparation and dispersion stability of graphite nanoparticles in palm oil
SourceJurnal Tribologi
Author N. F. Azman, S. Syahrullail, E. A. Rahim

Abstract

Nanolubricant, which is the suspension of nanoparticles in a based lubricant, promises a positive impact on tribological performance. However, its stability is a cause for concern in actual applications. The present research evaluates the effect of dispersion methods on the dispersion stability of graphite in palm oil-based lubricant. Nanolubricants are prepared by different two- step methods; including magnetic stirrer, overhead stirrer and high-shear homogeniser. The dispersion stability of nanolubricants was measured by sedimentation photographs and metallographic microscopy. The results indicate that the high-shear homogeniser method was the most effective at providing a more stable suspension. Dispersion stability of nanolubricants affects the viscosity and tribological performance.


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