Study on friction properties of silver/polydopamine modified graphene oxide nanocomposites as lubricant additive

Zhang, Lixiu; Yin, Zhenyu; Zhang, Ke; Li, Songhua; Wang, Junhai; Wei, Xiaoyi

doi:10.1080/1536383x.2022.2136655

Cited by 5 publications

(4 citation statements)

References 33 publications

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“…We observed that the lubricating oil containing 0.2 wt% Ag/PGO had the best friction performance. 20…”

Section: Analysis and Discussionmentioning

confidence: 99%

“…The addition of 0.2 wt% Ag/PGO nanoparticles to lubricate oil showed the best friction performance. 20 The preparation process is shown in Figure 1. The sample materials were characterized using SEM and TEM, and we found that a core-shell structure with nano-silver as the core and polydopamine as the shell formed on the surface of graphite oxide.…”

Section: Vibration Test Of Motorized Spindlementioning

confidence: 99%

“…We observed that the lubricating oil containing 0.2 wt% Ag/PGO had the best friction performance. 20 The width and depth of wear marks were observed using a depth-of-field microscope and surface roughness meter. Figure 8 shows the wear mark image of the lubricating oil containing additives.…”

Section: Viscosity and Lubrication Mechanism Of Ag/pgomentioning

confidence: 99%

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Effect of silver/polydopamine graphene oxide as lubricating oil additive on temperature rise and vibration of motorized spindle

Zhang

Yin

Zhang

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this study, polydopamine and silver-modified graphene oxide (Ag/PGO) were prepared using a one-step method, and the effects of Ag/PGO as a lubricating oil additive on the viscosity, thermal conductivity, and lubricating performance of lubricating oil were studied. The influence of additive lubricating oil on the temperature increase and vibration of a high-speed motorized spindle was studied through a motorized spindle experiment. The results showed that the addition of Ag/PGO nanocomposites could improve the thermophysical properties and lubricating properties of the lubricating oil. The Ag/PGO nanoparticles deposited on the friction surface formed a friction protective film, which prevented direct contact between the friction pairs and effectively reduced the heat generated through friction and micro-peak collision during bearing operation. The lubricating oil containing Ag/PGO had high thermal conductivity and a good heat dissipation effect in convection heat transfer in the bearing cavity. The deposition and repair of nanoparticles could improve the micro-morphology of the friction surface and reduce the high-frequency amplitude of the motorized spindle.

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“…We observed that the lubricating oil containing 0.2 wt% Ag/PGO had the best friction performance. 20…”

Section: Analysis and Discussionmentioning

confidence: 99%

Section: Vibration Test Of Motorized Spindlementioning

confidence: 99%

See 1 more Smart Citation

Effect of silver/polydopamine graphene oxide as lubricating oil additive on temperature rise and vibration of motorized spindle

Zhang

Yin

Zhang

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Graphene oxide has a unique two-dimensional layered structure, good mechanical properties, chemical stability, excellent anti-wear and anti-friction properties, and is a high-performance environmentally friendly lubricating additive [4][5][6][7][8][9][10][11][12]. However, due to its unique molecular structure, GO exhibits irreversible agglomeration in aqueous or oily media [2], which greatly reduces the lubrication performance of graphene and hinders its application and development in the field of lubrication.…”

Section: Introductionmentioning

confidence: 99%

The Preparation of Crumpled Graphene Oxide Balls and Research in Tribological Properties

Zhang,

Gao

et al. 2024

Materials

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In this study, crumpled graphene oxide balls (CGBs) were prepared via capillary compression using a rapidly evaporating aerosol droplet method. The CGBs were observed using scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), and Raman spectroscopy. The size distributions of crumpled particles were obtained using a laser nanometer particle size analyzer (DLS). The dispersibility of the water and the ionic liquid (IL) was tested by ultrasonic dispersion. The tribological properties of water or ionic liquids containing crumpled graphene oxide ball additives (W/IL-CGB) were tested by a reciprocating friction tester and compared with water/ionic liquids with graphene oxide. The morphology of the wear scar was observed by a three-dimensional optical microscope and its lubrication mechanism was analyzed. The results show that the CGBs were successfully prepared by rapid evaporation of aerosol droplets, and the obtained CGBs were crumpled paper spheres. The CGBs had good water dispersion and ionic liquid dispersion, and IL-CGB has excellent anti-friction and anti-wear effects on steel–steel friction pairs. During the friction process, the CGB was adsorbed at the interface of the steel–steel friction pair to form a protective layer, which avoids the direct contact of the friction pair, thereby reducing friction and wear.

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Exploring the effects of water content on friction behavior and mechanism of DLC films in oil production environment based on molecular dynamics simulation and first-principles calculations

Liu

Zhang

Liu³

et al. 2023

Diamond and Related Materials

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Study on friction properties of silver/polydopamine modified graphene oxide nanocomposites as lubricant additive

Cited by 5 publications

References 33 publications

Effect of silver/polydopamine graphene oxide as lubricating oil additive on temperature rise and vibration of motorized spindle

Effect of silver/polydopamine graphene oxide as lubricating oil additive on temperature rise and vibration of motorized spindle

The Preparation of Crumpled Graphene Oxide Balls and Research in Tribological Properties

Exploring the effects of water content on friction behavior and mechanism of DLC films in oil production environment based on molecular dynamics simulation and first-principles calculations

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