期刊
TRIBOLOGY INTERNATIONAL
卷 127, 期 -, 页码 557-567出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2018.06.033
关键词
Inorganic-organic hybrid carbon quantum dots; Contact interfaces; Antioxidant; Lubrication mechanism
资金
- National Natural Science Foundation of China [21404114]
- China Postdoctoral Science Foundation [2014M561797]
- Natural Science Foundation of Ningbo [2015A610051]
Inorganic organic hybrid carbon quantum dots (CQDs) attached the structure of diphenylamine (DPA) on the surfaces (CQDs(-N)) have been successfully prepared by one-step pyrolysis method at lower temperature. The obtained N-doped carbon dots (CQDs(-N)) were spherical particles with a narrow size distribution exhibiting photoluminescent property, which are also proved to be an multifunctional additive exhibiting not only antioxidant but also antiwear and friction-reducing performances. Even tested under higher load, CQDs(-N) still exhibited superior friction-reducing performance till now in polyethylene glycol (PEG) for steel/steel pairs. The function of CQDs(-N) with polar nature, acting as bearing balls and depositing on the interface to form non-uniform protective film, might account for the excellent antiwear and friction-reducing performances under boundary lubrication.
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