MoS2/Montmorillonite Nanocomposite: Preparation, Tribological Properties, and Inner Synergistic Lubrication
| Autor: | Lehua Cheng, Chao Xianquan, Renfa Zhu, Xianguo Hu, Enzhu Hu, Kunhong Hu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Nanocomposite
Materials science Composite number Nanoparticle 02 engineering and technology Tribology 021001 nanoscience & nanotechnology Condensed Matter Physics law.invention chemistry.chemical_compound 020303 mechanical engineering & transports Montmorillonite 0203 mechanical engineering Magazine chemistry Chemical engineering law Lubrication General Materials Science 0210 nano-technology Molybdenum disulfide |
| Zdroj: | Nano. 13:1850144 |
| ISSN: | 1793-7094 1793-2920 |
| Popis: | A nano-MoS2/montmorillonite K-10 (K10) composite was prepared and characterized. The composite contains two types of 2H-MoS2 nanoparticles. One is the hollow spherical MoS2 with a size range of 75[Formula: see text]nm, and the other is the spherical nano cluster of MoS2 with a size range of 30[Formula: see text]nm. The two kinds of nano-MoS2 were formed via assembly of numerous MoS2 nano-platelets with a size of [Formula: see text][Formula: see text]nm. A tribological comparison was then made among nano-MoS2/K10, K10, nano-MoS2 and a mechanical mixture of K10 and nano-MoS2. K10 reduced the wear but slightly increased the friction. Nano-MoS2 remarkably reduced both friction and wear. The mechanical mixture demonstrated better wear resistance than nano-MoS2, indicating a synergistic anti-wear effect of nano-MoS2 and K10. The synergistic effect was reinforced using nano-MoS2/K10 instead of the mechanical mixture. A part of the MoS2 in the contact region always lubricated the friction pair, and the rest formed a tribofilm. K10 segregated the friction pair to alleviate the ablation wear but magnified the abrasive wear. S-MoS2 protects K10 and they together function as both a lubricant and an isolating agent to reduce the ablation and abrasive wear. |
| Databáze: | OpenAIRE |
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