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论文类型：期刊论文

发表时间：2019-03-01

发表刊物：JOURNAL OF MATERIALS SCIENCE

收录刊物：SCIE、Scopus

卷号：54

期号：6

页面范围：5127-5135

ISSN号：0022-2461

关键字：Carbon; Energy dispersive X ray analysis; Friction; Lubricating oils; Scanning electron microscopy; Tribology, Coefficient of frictions; Fourier transform infrared spectra; Lubricant additives; Lubricating performance; Surface irregularities; Tribological performance; Tribological tests; Uniform mixtures, Spheres

摘要：Polyetheretherketone (PEEK) has been increasingly used as sliding components in engineering. With the attempt to enhance the tribological performance of PEEK under oil lubrication, in the present work, carbon spheres were prepared and then added to lubricating oil as additives. Strikingly, compared with neat oil lubrication, the tribological tests manifest a notable reduction in coefficient of friction (23.5-33.2%) and wear rate (24.2%) under hybrid oil lubrication. Raman spectra, Fourier transform infrared spectra, and energy dispersive X-ray analyses indicate the presence of functional groups on carbon spheres, enabling the good interactions between carbon spheres and lubricating oil. The uniform mixture of carbon spheres and lubricating oil can fill in the gap of the surface irregularities and form a protective boundary film. Additionally, the carbon spheres can result in rolling movement to promote the lubricating performance, evidenced by scanning electron microscopy. This study proposes a simple and practicable approach to improving the tribological performance of PEEK.