Synergistic effect of talc/carbon spheres composite as oil‐based additive enhancing the lubricating properties for steel‐steel contact

Fei, Jie; Luo, Lan; Gu, Yuefeng; Huang, Jianfeng

doi:10.1002/ls.1488

Cited by 17 publications

(6 citation statements)

References 31 publications

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“…The modified talc shows the absorption peak at 667 cm −1 , which is resulted from MgO (Mg=O stretching) in talc [ 39 ]. The obvious absorption peak of Si–O–Si stretching at 1017 cm −1 means the talc surface is successfully modified by the agent via a covalent bond [ 40 , 41 ]. Thus, the dispersion and lubrication performance of the nanosheets in grease have a great potential to be realized.…”

Section: Resultsmentioning

confidence: 99%

Using Green, Economical, Efficient Two-Dimensional (2D) Talc Nanosheets as Lubricant Additives under Harsh Conditions

et al. 2022

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Two-dimensional (2D) nanomaterials have attracted much attention for lubrication enhancement of grease. It is difficult to disperse nanosheets in viscous grease and the lubrication performances of grease under harsh conditions urgently need to be improved. In this study, the 2D talc nanosheets are modified by a silane coupling agent with the assistance of high-energy ball milling, which can stably disperse in grease. The thickness and size of the talc nanosheet are about 20 nm and 2 µm. The silane coupling agent is successfully grafted on the surface of talc. Using the modified-talc nanosheet, the coefficient of friction and wear depth can be reduced by 40% and 66% under high temperature (150 °C) and high load (3.5 GPa), respectively. The enhancement of the lubrication and anti-wear performance is attributed to the boundary adsorbed tribofilm of talc achieving a repairing effect of the friction interfaces, the repairing effect of talc on the friction interfaces. This work provides green, economical guidance for developing natural lubricant additives and has great potential in sustainable lubrication.

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Section: Resultsmentioning

confidence: 99%

Using Green, Economical, Efficient Two-Dimensional (2D) Talc Nanosheets as Lubricant Additives under Harsh Conditions

et al. 2022

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“…The SEM of the worn surface is shown in Figure 7. The wear surface of pure POE oil is a typical adhesive wear morphology with many exfoliations, furrows and metal burrs on the surface 30,31 . With the addition of OA‐MSH, the wear surface becomes smoother with shallow furrows.…”

Section: Resultsmentioning

confidence: 99%

Characterisation of self‐repairing layer formed by oleic acid modified magnesium silicate hydroxide

Yuan

Wang

Yang

et al. 2020

Lubrication Science

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Serpentine, whose main component is magnesium silicate hydroxide (MSH), has excellent friction properties. To explore the self‐repair mechanism of pure MSH under natural working conditions, MSH was synthesised by hydrothermal method and modified with oleic acid (OA). The optimal concentration of OA‐MSH was added to the air‐conditioning compressor simulator. The self‐repairing layers were studied by scanning electron microscope, Raman, and transmission electron microscope. The results show that OA‐MSH is well uniformly dispersed in lubricating oil and has significant anti‐friction performance. When the concentration is 1.0 wt%, the friction performance is best. The surface self‐repairing layer is composed of a 1.5 μm thick transition layer and a 20 nm amorphous carbon‐based film under the conditions of air‐conditioning compressors. There are dislocation cells, nanocrystals, and Mn2(Fe2+, Mg)5Si8O22(OH)2 in the transition layer. The formation mechanism of the self‐repairing layer on piston surface can be divided into three stages: nano‐crystallisation, mechanical alloying and lubricating oil crack deposition.

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“…The preservation of lignin-based oleogels from degradation and generation of harmful byproducts, such as acids, sludge, and varnish, is vital and can be achieved through improving their antioxidation properties. 46 It is interesting to observe that the degradation does not obviously affect the lubricating performance (as shown in Figure 7a). However, it is well known that the anticorrosion and rheological properties will be greatly deteriorated, which will cause serious machine damages problems.…”

Section: Acs Sustainable Chemistry and Engineeringmentioning

confidence: 99%

Facile Synthesis of Lignin-Castor Oil-Based Oleogels as Green Lubricating Greases with Excellent Lubricating and Antioxidation Properties

Wu,

Thoresen,

Matsakas

et al. 2023

ACS Sustainable Chem. Eng.

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In this study, a facile synthesis method was employed to create lignin-castor oil-based oleogels by modifying organic lignin with two silane coupling agents. The resulting oleogels demonstrated outstanding lubricating and antioxidation properties, establishing them as promising green lubricating greases. Compared with the pure castor oil, the oxidation induction time (OIT) value of the synthesized oleogels was significantly increased from 20 s (pure castor oil) to 1959 s (oleogel with 20 wt % lignin), indicating an effective improvement of the oxidation resistance. The steel contacts lubricated by the synthesized oleogel also had lower wear than those lubricated by pure castor oil, signifying the better lubricating properties of oleogels. The oleogel with 20 wt % lignin showed the lowest wear, which was around 64% lower than that of pure castor oil. The exceptional performance and environmentally sustainable composition of these oleogels, with the biomass content exceeding 80%, allow them to be used as green lubricating greases for industrial applications. Overall, this study provides valuable insights into the development of high-performance, eco-friendly lubricants.

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Synergistic effect of talc/carbon spheres composite as oil‐based additive enhancing the lubricating properties for steel‐steel contact

Cited by 17 publications

References 31 publications

Using Green, Economical, Efficient Two-Dimensional (2D) Talc Nanosheets as Lubricant Additives under Harsh Conditions

Using Green, Economical, Efficient Two-Dimensional (2D) Talc Nanosheets as Lubricant Additives under Harsh Conditions

Characterisation of self‐repairing layer formed by oleic acid modified magnesium silicate hydroxide

Facile Synthesis of Lignin-Castor Oil-Based Oleogels as Green Lubricating Greases with Excellent Lubricating and Antioxidation Properties

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