Graphite oxide tribo-layer formation under boundary lubrication of diesel fuel. Issue 1 (February 2021)

• Record Type: Journal Article
• Authors: Fuadi, Z; Kurniawan, R; Kanda, K; Adachi, K
• Is Part Of: IOP conference series. Volume 1087:Issue 1(2021)
• Publication Date: 2021-02
• Subjects: Materials science -- Periodicals; 620.1105
• DOI: 10.1088/1757-899X/1087/1/012075
• Languages: English
• ISSNs: 1757-8981

Abstract

Abstract: Friction and wear of mechanical components (such as engines) is controlled by some kind of boundary films (also referred to as tribo-layer). In some cases, such boundary film is formed on the contact interface due to a tribo-chemical process in the presence of liquid media. In this paper, we demonstrate the formation of graphite oxide tribo-layer on the contact interface of steel in the presence of diesel fuel liquid media. A Raman spectrometer was used to analyse the tribo-layer structure. Although the intensity is low, it is shown that the tribo-layer has a structure of graphite oxide, demonstrated by the presence of D band peak at approximately 1350 cm −1 and G band peak at approximately 1550 cm −1 in the Raman spectra. Such graphite solid films on the sliding surfaces have ability to control friction and wear. This finding demonstrates the possibility of in-situ formation of solid protective film of a tribo-pair components using the working fluid where the use of lubricants is restricted as they contaminate the working fluid.