Abstract
The maiden effort to explore the potential of nanoparticles (NPs) of Talc to improve the tribo-performance of Li-based grease is reported. A series of greases, including NPs of Talc in various amounts (1, 2, 3, and 4 wt%), was developed. It was evaluated for the rheological, thermal and tribological viz. antiwear (AW), anti-friction (AF) and extreme-pressure (EP) characteristics. The highest tribological performance improvement was obtained at an optimum dosage of 2 wt% with an enhancement in AW and EP performance by 47% and 79%, respectively. The wear mechanisms are discussed based on various surface characterization techniques. Talc nano-grease proved more efficient than its micro-counterpart at 2 wt% on comparison of AW and EP by 43% and 17% respectively.
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