Tribological properties of alkylated reduced graphene oxide as lubricant additive

2022 ◽  
Vol 165 ◽  
pp. 107273
Author(s):  
Bo Yu ◽  
Kai Wang ◽  
Xianjuan Pang ◽  
Gensheng Wu ◽  
Jibin Pu ◽  
...  
Lubricants ◽  
2019 ◽  
Vol 7 (2) ◽  
pp. 11 ◽  
Author(s):  
Jankhan Patel ◽  
Amirkianoosh Kiani

In this study, reduced graphene oxide (rGO) nano platelets were used as an additive to enhance friction and wear properties of oil-based lubricants by preparing three samples at 0.01% w/w, 0.05% w/w, and 0.1% w/w concentrations. To analyze the direct effect of rGO nano platelets on tribological properties, 99.9% pure oil was used as a liquid lubricant. A comparative tribological study was done by performing a ball-on-disk wear test in situ under harsh conditions, which was further analyzed using a non-contact 3D optical profilometer. Morphological evaluation of the scar was done using transmission and scanning electron microscopy (TEM, SEM) at micro and nano levels. The lubricants’ physical properties, such as viscosity and oxidation number, were evaluated and compared for all samples including pure oil (control sample) as per ASTM standards. Findings of all these tests show that adding rGO nano platelets at 0.05% w/w showed significant reduction in friction at high speed and in wear up to 51.85%, which is very promising for increasing the life span of moving surfaces in machinery. Oxidation and viscosity tests also proved that adding rGO nano platelets to all samples does not sacrifice the physical properties of the lubricant, while it improves friction and wear properties.


RSC Advances ◽  
2013 ◽  
Vol 3 (48) ◽  
pp. 26086 ◽  
Author(s):  
Yi Zhang ◽  
Hua Tang ◽  
Xiaorui Ji ◽  
Changsheng Li ◽  
Lin Chen ◽  
...  

Carbon ◽  
2016 ◽  
Vol 102 ◽  
pp. 145-153 ◽  
Author(s):  
Chao Liu ◽  
Hongxia Yan ◽  
Qing Lv ◽  
Song Li ◽  
Song Niu

RSC Advances ◽  
2016 ◽  
Vol 6 (55) ◽  
pp. 49797-49797
Author(s):  
Mingsuo Zhang ◽  
Beibei Chen ◽  
Jin Yang ◽  
Hongmei Zhang ◽  
Qing Zhang ◽  
...  

Correction for ‘MoS2/reduced graphene oxide hybrid structure and its tribological properties’ by Mingsuo Zhang et al., RSC Adv., 2015, 5, 89682–89688.


2020 ◽  
Vol 68 (4) ◽  
pp. 29-55
Author(s):  
Patrycja Magdalena Nogas ◽  
Krzysztof Gocman ◽  
Tadeusz Kałdoński

The aim of this publication is to present the results of studies on the SN-650 oil base with various concentrations of graphene oxide (GO), reduced graphene oxide (rGO) produced by the Institute of Electronic Materials Technology in Warsaw and hexagonal boron nitride (h-BN) produced according to the technology developed at the Military University of Technology. The first part of the publication presents basic information about graphene oxide and the possibilities of its use, in particular in the field of tribology. The second part of the publication presents the results of tests of lubricity properties of the samples with the addition of 0.05%, 0.1%, 0.5%, 1% and 2% of graphene oxide, reduced graphene oxide or hexagonal boron nitride. The measurements were carried out using the UNMT universal nano/microtester tester and the T-02 four-ball device, at the Department of Tribology, Surface Engineering and Logistics of Service Fluids, which is a part of the Institute of Mechanical Vehicles and Transport of the Mechanical Faculty of the Military University of Technology. The obtained results have demonstrated the beneficial effect of introducing additions in the form of graphene oxide or hexagonal boron nitride onto the tribological properties of the oil base. Keywords: graphene, hexagonal boron nitride, graphene oxide, oil base


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