Journal
TRIBOLOGY INTERNATIONAL
Volume 42, Issue 1, Pages 33-39Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2008.05.016
Keywords
MoS2; Nanosheets; Monolayer restacking process; Tribological properties
Categories
Funding
- National Natural Science Foundation of China [50475071]
- Anhui Provincial Natural Science Foundation [070414152]
- Anhui Provincial Foundation for Young Teacher of Colleges and Universities [2007JQ1149]
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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 MoS2 nanosheets had a thickness about 30-70 nm. The tribological properties of the so-prepared MoS2 nanosheets were investigated on a MQ-800 four-ball tribometer. The results showed the base oil with MoS2 nanosheets had better friction reduction, wear resistance and extreme pressure than those with commercial micro-MoS2. The good tribological properties of MoS2 nanosheets were mainly ascribed to the surface effect and the dimension effect of nanoparticles. Moreover, the formation of MoO3 and FeSO4 complex film on the rubbed surface also played an important role in friction reduction and wear resistance. (C) 2008 Elsevier Ltd. All rights reserved.
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