Abstract
Molybdenum disulfide nanosheets were prepared by monolayer restacking process. Results of transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), and scanning electron microscopy (SEM) showed that the obtained MoS 2 nanosheets had a thickness about 30–70 nm. The tribological properties of the so-prepared MoS 2 nanosheets were investigated on a MQ-800 four-ball tribometer. The results showed the base oil with MoS 2 nanosheets had better friction reduction, wear resistance and extreme pressure than those with commercial micro-MoS 2. The good tribological properties of MoS 2 nanosheets were mainly ascribed to the surface effect and the dimension effect of nanoparticles. Moreover, the formation of MoO 3 and FeSO 4 complex film on the rubbed surface also played an important role in friction reduction and wear resistance.
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