Abstract

This study presents a nano CuO-based neem oil cutting fluid tailored for machining Ti-6Al-4V. The thermogravimetric analysis (TGA) of the nano CuO-based neem oil cutting fluid exhibited a remarkable improvement of 88.75% in thermal stability and the Differential Thermal Analysis (DTA) demonstrated a significant 24.24% enhancement in the melting temperature of the cutting fluid compared to its neem oil-based cutting fluid counterpart. Additionally, the thermophysical properties have notably improved with a reduction in 3.4% in viscosity, a 1.84% increase in density, a 19.7% decrease in surface tension, a 5.74% increase in specific heat, and a notable increase of 34.5% in thermal conductivity respectively. These findings highlight the potential of the nano CuO-based neem oil cutting fluid as a superior choice for machining Ti-6Al-4V, offering enhanced thermal stability, melting temperature, improved thermophysical properties.

Key words: Synthesis, Thermal characterisation, nano CuO infused neem oil cutting fluid,Ti-6Al-4V