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MoS 2 ‐Functionalized Graphene Composites—Potential Replacement for Lubricant Friction Modifier and Anti‐Wear Additives
Author(s) -
Ismail Nurul Athirah,
Chowdhury Zaira Zaman,
Johan Mohd Rafie,
Zulkifli Nurin Wahidah Mohd
Publication year - 2021
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.202100030
Subject(s) - materials science , lubricant , x ray photoelectron spectroscopy , tribology , fourier transform infrared spectroscopy , composite material , scanning electron microscope , raman spectroscopy , graphene , composite number , field emission microscopy , dry lubricant , diffraction , chemical engineering , nanotechnology , physics , optics , engineering
AGOC(n)/MoS 2 composites are synthesized by a facile and effective hydrothermal method. Different mass ratios of AGOC(n) to MoS 2 are prepared for producing AGOC(n)/MoS 2 composites and their tribological properties at different weight percentages in Group III petroleum‐based oil are investigated. The as‐prepared composites are characterized using Fourier transform infrared (FTIR), field emission scanning electron microscope/energy dispersive X‐ray (FESEM/EDX), Raman, X‐ray diffraction (XRD), and X‐ray photoelectron spectroscopy (XPS). The performance of the AGOC(n)/MoS 2 composites as lubricant additives is investigated on four‐ball testers. The results indicate that AGOC(n)/MoS 2 could improve the friction‐reduction and antiwear properties of the petroleum‐based oil. In particular, the AGOC14/MoS 2 composite with a 1:1 mass ratio shows the highest reduction of friction coefficient and wear scar diameter by 53% and 63%, respectively. The excellent tribological behavior of the composites is attributed to the synergetic effect and unique layered structure of AGOC(n) and MoS 2 .