Wear damage and effects of graphene-based lubricants/coatings during linear reciprocating sliding wear at high contact pressure

Mishra, Dewika; Sonia, Farjana J.; Srivastava, D.; Ganesha, G.N.; Singha, Utpal; Mukhopadhyay, Amartya

doi:10.1016/j.wear.2017.12.024

Cited by 21 publications

(9 citation statements)

References 15 publications

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“…There are several types of lubricants, such as mineral oil (Mishra et al, 2018), ester oil (Zheng et al, 2018), poly alpha olefins (PAO) (Podgornik et al, 2018), and vegetable oil (Paulos, 2019). The raw materials required for producing mineral oil are readily available and inexpensive; however, mineral oil is not degradable, and environmental pollution associated with its use cannot be ignored.…”

Section: Introductionmentioning

confidence: 99%

Synthesizing Hindered Structure Poly (p‐Phenylenediamine) by Enzymatic Catalysis and Evaluating Its Antioxidation Mechanism in Biodegradable Castor Oils

Miao

Wang

et al. 2021

J Americ Oil Chem Soc

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In this study, poly(p‐phenylenediamine) (PPDA) was synthesized by an enzymatic polymerization method using p‐phenylenediamine as the monomer in the water phase. The PPDA structure was characterized by infrared (IR), gel permeation chromatography, and elemental analysis. The antioxidation behavior of the as‐synthesized PPDA in biodegradable castor oil was investigated using a rotary oxygen bomb test and pressurized differential scanning calorimetry. A theoretical calculation was conducted to investigate its antioxidation mechanism. PPDA was found to exhibit excellent oxidation resistance in castor oil at 150 °C, which effectively prolonged the oxidation induction time of the oil. The results obtained herein suggest that as with phenolic antioxidants, PPDA with a hindered structure effectively improves the antioxidation performance of the oil by enhancing the stability of nitrogen free radicals.

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Section: Introductionmentioning

confidence: 99%

Synthesizing Hindered Structure Poly (p‐Phenylenediamine) by Enzymatic Catalysis and Evaluating Its Antioxidation Mechanism in Biodegradable Castor Oils

Miao

Wang

et al. 2021

J Americ Oil Chem Soc

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“…Chen et al [17] reported that single-layer graphene had unique conductive effect under high electric field, which was called the current self-amplification effect. Mishra et al [18] studied the wear damage at very high contact pressure. The results showed that graphene-based lubricant could suppress the subsurface cracking and delamination in high contact pressure, while the oil-based lubricant could not.…”

Section: Introductionmentioning

confidence: 99%

Intermolecular hydrogen bond ruptured by graphite with different lamellar number

Zhang

Zhao

et al. 2021

R. Soc. open sci.

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Intermolecular hydrogen bonds are formed through the electrostatic attraction between the hydrogen nucleus on a strong polar bond and high electronegative atom with an unshared pair of electrons and a partial negative charge. It affects the physical and chemical properties of substances. Based on this, we presented a physical method to modulate intermolecular hydrogen bonds for not changing the physical–chemical properties of materials. The graphite and graphene are added into the glycerol, respectively, by being used as a viscosity reducer in this paper. The samples are characterized by Raman and 1H-nuclear magnetic resonance. Results show that intermolecular hydrogen bonds are adjusted by graphite or graphene. The rheology of glycerol is reduced to varying degrees. Transmission electron microscopes and computer simulation show that the spatial limiting action of graphite or graphene is the main cause of breaking the intermolecular hydrogen bond network structure. We hope this work reveals the potential interplay between nanomaterials and hydroxyl liquids, which will contribute to the field of solid–liquid coupling lubrication.

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“…Compared with disulfide materials (MoS2 and WS 2 ), carbon materials have attracted increasing attention owing to their environmental friendliness and interfacial non-corrosion [17,18]. Graphene is widely used to improve the tribological properties of lubricants owing to its excellent self-lubricating properties induced by its unique two dimensional (2D) structure [19][20][21][22][23][24][25]. Graphene improves the tribological performance of oils by forming a lubricating adsorption film and through the graphene interlayer slippage effect.…”

Section: Introductionmentioning

confidence: 99%

Improvement of the lubrication properties of grease with Mn3O4/graphene (Mn3O4#G) nanocomposite additive

et al. 2020

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Although grease can effectively lubricate machines, lubrication failure may occur under high speed and heavy load conditions. In this study, Mn3O4/graphene nanocomposites (Mn3O4#G) were synthetized using a hydrothermal method as lubricant additives. The lubrication properties of compound grease with Mn3O4#G nanocomposite additive under heavy contact loads of 600–900 N (3.95–4.59 GPa) were investigated. First, the nanocomposites were dispersed into L-XBCEA 0 lithium grease via successive electromagnetic stirring, ultrasound vibration, and three-roll milling. Compound grease with additives of commercial graphene (Com#G) was also investigated for comparison. Tribological test results revealed that the trace amounts of Mn3O4#G (as low as 0.02 wt%) could reduce the coefficient of friction (COF) of grease significantly. When the concentration of Mn3O4#G was 0.1 wt%, the COF and wear depth were 43.5% and 86.1%, lower than those of pure graphene, respectively. In addition, under the effect of friction, the microstructure of graphene in Mn3O4#G nanocomposites tends to be ordered and normalized. Furthermore, most of the Mn3O4 transformed into Mn2O3 owing to the high temperature generated from friction. Using the Ar gas cluster ion beam sputtering method, the thickness of the tribofilm was estimated to be 25–34 nm. Finally, the improvement of the lubrication properties was attributed to the synergistic effect of the adsorbed tribofilm, i.e., the graphene island effect and the filling effect of Mn3O4#G.

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Wear damage and effects of graphene-based lubricants/coatings during linear reciprocating sliding wear at high contact pressure

Cited by 21 publications

References 15 publications

Synthesizing Hindered Structure Poly (p‐Phenylenediamine) by Enzymatic Catalysis and Evaluating Its Antioxidation Mechanism in Biodegradable Castor Oils

Synthesizing Hindered Structure Poly (p‐Phenylenediamine) by Enzymatic Catalysis and Evaluating Its Antioxidation Mechanism in Biodegradable Castor Oils

Intermolecular hydrogen bond ruptured by graphite with different lamellar number

Improvement of the lubrication properties of grease with Mn3O4/graphene (Mn3O4#G) nanocomposite additive

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