期刊
TRIBOLOGY INTERNATIONAL
卷 95, 期 -, 页码 55-65出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2015.10.032
关键词
Gel lubricants; Zwitterionic Gelator; Friction reduction and anti-wear; Boundary film
资金
- NSFC [51305428, 21173243]
- 973 program [2013CB632301]
We report a new type of zwitterionic gelator, which cannot only gelate base lubricating oils by supra molecular self-assembly, but be used as additive in oils for significantly improved the tribological performances. The self-assembly mechanism is confirmed by NMR. The as-prepared zwitterionic gels have good thermoreversible and thixotropic characteristics, which make them as potential high performance semi-solid lubricants. The tribological results showed that the gel lubricants possessed excellent friction reducing and anti-wear properties compared with blank 500SN and Li-base grease with 2 wt% MoS2. The morphologies of the worn surfaces were analyzed by scanning electron microscope (SEM). The lubrication mechanism is proposed according to in-situ electrical contact resistance and the surface composition analysis at the worn surfaces. (C) 2015 Elsevier Ltd. All rights reserved.
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