Self-Lubricating Tribo-Catalytic Activity of 2D High Entropy Alloy Nanoflakes.

ABSTRACT: High Entropy Alloys (HEAs) have garnered attention due to their remarkable tribological attributes. Predominantly, failure mechanisms in HEAs emanate from stress-induced dislocations, culminating in crack propagation and film delamination. In this study, we report on the synthesis of 2D HEA of (MoWNbTaV)_0.2S₂ which facilitates shear-induced energy dissipation at sliding interfaces. The ball-on-disk tribological investigations demonstrate unprecedentedly low average coefficients of friction (0.076) and wear rates (10^-9 mm³ (N∙m)^-1) under high contact pressures (0.936 GPa) within ambient conditions. Employing multi-scale characterizations alongside molecular dynamic simulations, we elucidate that the presence of the HEA triggers tribocat

SUBMITTER: Wang S 

PROVIDER: S-EPMC12019924 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature