Lubricating Property of MQL Grinding of Al2O3/SiC Mixed Nanofluid with Different Particle Sizes and Microtopography Analysis by Cross-correlation

The lubrication performances of nanofluid take the dominant role in processing performances of MQL grinding. Improving lubrication performances of nanofluid effectively becomes a major research trend at present. Specifically, different mixing ratios may generate different “physical synergistic effect” and “physical encapsulation” effect. The lubrication performances of nanofluid is optimized through optimization of grain size combination of nanoparticles in nanofluid. It is one of effective ways to improve processing performances of MQL grinding. Previous scholars have studied influences of grain size of single nanoparticle on tribological properties and lubrication performances of nanofluid. However, only few scholars have studied influences of mixed nanoparticles with different grain sizes on lubrication performances of MQL grinding.