Potential exploration of nano-talc particles for enhancing the anti-wear and extreme pressure performance of oil

Saini, Vinay; Bijwe, Jayashree; Seth, Sarita; Ramakumar, S.S.V.

doi:10.1016/j.triboint.2020.106452

Cited by 30 publications

(20 citation statements)

References 56 publications

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“…This confirmed that added graphite NPs prevented the oxidation of ball surface to the maximum extent. The O1s binding energies at 530.1 and 531.5 eV in particularly are assigned to metal oxides and hydroxides present at the stainless-steel surface [14,35]. The deconvoluted C1s spectra of the sample lubricated with virgin grease (Fig.…”

Section: Ep Performance Evaluationmentioning

confidence: 99%

“…Some solid lubricants (SLs) such as PTFE [8][9][10], MoS 2 [11], graphite [12,13], etc., have previously been shown as effective additives in grease formulations. Other lesser known SLs such as Talc [14], CaF 2 crystals [15], CaCO 3 [16], copper powder [17] and copper oxide [18] have shown some potential as anti-wear (AW), anti-friction (AF) and enhanced load-carrying capacity either alone or in combination. Carbon in various forms viz.…”

Section: Introductionmentioning

confidence: 99%

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Tribological Investigations of Nano and Micro-sized Graphite Particles as an Additive in Lithium-Based Grease

2020

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Graphite is a well-known solid lubricant (SL) additive widely used both as a standalone SL and also as additive in lubricating oils, greases, composites, etc. Size of the additive particles especially nano-particles (NPs) is a major attribute to the performance properties of a composite, oil, grease, etc. This paper highlights the influence of graphite particles of four sizes viz. 50 nm, 450 nm, 4 microns and 10 microns incorporated in the grease in identical amount (4 wt. %) on the anti-friction (AF), anti-wear (AW) and extreme-pressure (EP) performance. The results indicated that all sizes proved beneficial for all the selected properties. Higher the size of particles, lower was the improvement in performance. The particles were most effective as anti-friction additive (AFA) followed by anti-wear additive (AWA) and then extreme-pressure additive (EPA). The NPs exhibited highest improvement as AFA (57%), AWA (41%) and EPA (25%). Raman Spectroscopy proved the formation of exfoliated graphitic layer on the worn surface of balls. Furthermore, SEM micrograph with elemental mapping and XPS spectroscopy analysis proved supportive in comprehending the mechanisms responsible for improved tribo-performance.

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Section: Ep Performance Evaluationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tribological Investigations of Nano and Micro-sized Graphite Particles as an Additive in Lithium-Based Grease

2020

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“…[26] Talc has been widely used to enhance the antiwear property of polymer composite. [27] Katiyar et al have evaluated the friction and wear durability of epoxy-based polymer (SU-8) composite coating filled with talc and graphite. The result indicated that SU-8 filled with the optimized composition of 15 wt% talc and 15 wt% graphite exhibits 4 times lesser steady-state coefficient of friction (0.2), and 1000 times decrease in the wear rate compared with pure SU-8 owing the elastic modulus and hardness of SU-8 was enhanced after filling the talc and graphite.…”

Section: Introductionmentioning

confidence: 99%

MoS₂‐decorated talc hybrid for improving the tribological property of Nomex/PTFE fabric composites

Zhang

Yang

et al. 2021

Polymer Composites

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Producing self‐lubricating fabric composites with excellent wear resistance and long service life is desired for their use in practical application, yet still challenging. Therefore, a novel nanoparticle of talc‐molybdenum sulfide (MoS2) hybrid nanosheets was synthesized via one‐step hydrothermal reaction in this work and incorporated into the Nomex/polytetrafluoroethylene (PTFE) self‐lubricating fabric composites. The spectroscopic and microscopic characterization demonstrated that the talc‐MoS2 nanosheets were successfully synthesized. The talc‐MoS2 nanosheets exhibit the obvious layered structure and covered with MoS2. The effect of talc‐MoS2 hybrid nanosheets on the tribological performance of fabric composites was systematically evaluated by tri‐pin on disk tribometer. The results show that the talc‐MoS2 nanosheets increased the thermal stability, thermal conductivity, tensile strength, and hardness of composite and was favorable for forming high‐quality transfer film on the surface of counterpart pin during the wear process owing to the cooperation effect of talc‐MoS2. The wear rate of talc‐MoS2‐reinforced composite was reduced by 30%–53% under different conditions compared with pure fabric composite.

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“…Talc is a 2D layered and naturally abundant mineral; thus, it is low cost, ecofriendly, and stable [ 31 , 32 ]. Its specific gravity ranges from 2.7 to 2.8, and it offers high chemical inertness.…”

Section: Introductionmentioning

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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Potential exploration of nano-talc particles for enhancing the anti-wear and extreme pressure performance of oil

Cited by 30 publications

References 56 publications

Tribological Investigations of Nano and Micro-sized Graphite Particles as an Additive in Lithium-Based Grease

Tribological Investigations of Nano and Micro-sized Graphite Particles as an Additive in Lithium-Based Grease

MoS₂‐decorated talc hybrid for improving the tribological property of Nomex/PTFE fabric composites

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

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Potential exploration of nano-talc particles for enhancing the anti-wear and extreme pressure performance of oil

Cited by 30 publications

References 56 publications

Tribological Investigations of Nano and Micro-sized Graphite Particles as an Additive in Lithium-Based Grease

Tribological Investigations of Nano and Micro-sized Graphite Particles as an Additive in Lithium-Based Grease

MoS2‐decorated talc hybrid for improving the tribological property of Nomex/PTFE fabric composites

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

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Product

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About

MoS₂‐decorated talc hybrid for improving the tribological property of Nomex/PTFE fabric composites