Antiwear and extreme pressure performance of castor oil with nano-additives

Gupta, Ratneshwer; Harsha, A. P.

doi:10.1177/1350650117739159

Cited by 33 publications

(16 citation statements)

References 33 publications

(54 reference statements)

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“…In addition, SnO 2 NPs can roll or slide between two friction surfaces to prevent adhesive wear. CeO 2 NPs (≈90 nm) were used as additives in castor oil with four different concentrations in the range 0.1%-1.0% w/v, with sodium dodecyl sulfate as a dispersant [174]. The maximum reduction in the wear scar diameter was 37.4% at the optimum concentration of CeO 2 .…”

Section: Effect Of Surface Functionalizationmentioning

confidence: 99%

Metal-containing nanomaterials as lubricant additives: State-of-the-art and future development

2019

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This review focuses on the effect of metal-containing nanomaterials on tribological performance in oil lubrication. The basic data on nanolubricants based on nanoparticles of metals, metal oxides, metal sulfides, nanocomposities, and rare-earth compounds are generalized. The influence of nanoparticle size, morphology, surface functionalization, and concentration on friction and wear is analyzed. The lubrication mechanisms of nanolubricants are discussed. The problems and prospects for the development of metal-containing nanomaterials as lubricant additives are considered. The bibliography includes articles published during the last five years. Friction 7(2): 93-116 (2019) | https://mc03.manuscriptcentral.com/friction Friction 7(2): 93-116 (2019) 97 |www.Springer.com/journal/40544 | Friction http://friction.tsinghuajournals.comFriction 7(2): 93-116 (2019)

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Section: Effect Of Surface Functionalizationmentioning

confidence: 99%

Metal-containing nanomaterials as lubricant additives: State-of-the-art and future development

2019

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“…Prominent among these have been the friction reduction and anti-wear properties of metals, such as Fe, Cu, and Co [12,13], and metallic oxide nanoparticles, such as CuO, ZnO, TiO 2 , SiO 2 , or Al 2 O 3 [14][15][16][17]. In addition, the anti-wear, antifriction, and load carrying properties of castor oil were significantly improved with the addition of hybrid nano oxides like CeO 2 and polytetrafluoroethylene nanoparticles [18][19][20]. Li et al demonstrated that small quantities of graphene additives could diminish friction and wear scars in steel/steel metal contacts [21].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Nanoclay Concentration and Oil Viscosity on the Rheological and Tribological Properties of Nanoclay-Based Ecolubricants

et al. 2021

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This manuscript describes a rheological and tribological study carried out on eco-friendly lubricants. These ecolubricants were made up of nanoclays as dispersed phase (a layered nanosilicate (montmorillonite Cloisite 15A) and a fiber-like nanoclay (sepiolite Pangel B20)) and vegetable-based oil as continuous phase (castor oil (CO), high oleic sunflower oil (HOSO) and their mixtures). A series of nanoclay-based ecolubricants were prepared by varying both nanoclay concentration and base oil, and thus, its viscosity. Friction and wear behaviors were assessed by using a ball-on-three plates tribometer cell. The results showed that the fiber-like sepiolite Pangel B20 yielded an important reduction in the wear scar diameter, thus revealing its potential as anti-wear and load-carrying additive in ecolubricant formulations, while Cloisite 15A proved to have friction improving properties. These anti-wear and friction reducing properties were found to be influenced by both nanoclay concentration and oil viscosity.

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“…It was reported that CeO 2 nanoparticles, as an EP agent of lubricating oil, showed excellent friction-reducing performance at a very low concentration (0.01wt%), but did not improve the bearing capacity [16,17]. It was attributed to the polishing effect of CeO 2 nanoparticles on the surface of friction pairs.…”

Section: Introductionmentioning

confidence: 99%

The Tribological Mechanism of Cerium Oxide Nanoparticles as Lubricant Additive of Poly-Alpha Olefin

Lei

Zhang

et al. 2020

Tribol Lett

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Oleylamine (hereinafter referred to as OM)-modified CeO 2 nanoparticles were synthesized by a one-pot pyrolysis method. The tribological properties of the as-prepared CeO 2 nanoparticles as the lubricant additive in poly-alpha olefin (PAO) were investigated with a four-ball machine, and their lubricating mechanism was discussed in relation to worn surface analyses by SEM, EDS, and XPS. Findings indicate that these nanoparticles exhibit good dispersibility as well as excellent anti-wear ability in PAO. This is because OM-modified CeO 2 nanoparticles can catalyze the oxidation of metallic Fe to form ferrite oxide-containing tribo-film. Under the condition of ASTM D2266-2001, the same lowest WDS was obtained at the concentration of 0.2 wt% and 1.8 wt%. When the concentration of CeO 2 is 0.2 wt%, a compact catalytic oxidation tribo-film is formed, which has more outstanding long-term anti-wear ability. When 1.8 wt% CeO 2 is added, the tribo-film formed is the combination of catalytic oxidation film and ceria deposition film, which has more significant bearing capacity.

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Antiwear and extreme pressure performance of castor oil with nano-additives

Cited by 33 publications

References 33 publications

Metal-containing nanomaterials as lubricant additives: State-of-the-art and future development

Metal-containing nanomaterials as lubricant additives: State-of-the-art and future development

Influence of the Nanoclay Concentration and Oil Viscosity on the Rheological and Tribological Properties of Nanoclay-Based Ecolubricants

The Tribological Mechanism of Cerium Oxide Nanoparticles as Lubricant Additive of Poly-Alpha Olefin

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