Experimental investigation of the tribological behavior of lubricants with additive containing copper nanoparticles

Borda, Fatima Leonor Guzman; Oliveira, S. J. Ribeiro De; Lazaro, Leticia; Leiroz, Albino J. K.

doi:10.1016/j.triboint.2017.08.012

Cited by 153 publications

(43 citation statements)

References 17 publications

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“…Carbon-based and metallic-based nanoparticles are two of the most utilized nanomaterials for anti-friction and anti-wear applications [22][23][24][25]. Magnetic metal nanoparticles are broadly studied due to their numerous applications such as magnetic records, drug-delivery agents and anti-wear additives of lubricants, among others [26].…”

Section: Introductionmentioning

confidence: 99%

Tribological Behavior of Nanolubricants Based on Coated Magnetic Nanoparticles and Trimethylolpropane Trioleate Base Oil

et al. 2020

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The main task of this work is to study the tribological performance of nanolubricants formed by trimethylolpropane trioleate (TMPTO) base oil with magnetic nanoparticles coated with oleic acid: Fe3O4 of two sizes 6.3 nm and 10 nm, and Nd alloy compound of 19 nm. Coated nanoparticles (NPs) were synthesized via chemical co-precipitation or thermal decomposition by adsorption with oleic acid in the same step. Three nanodispersions of TMPTO of 0.015 wt% of each NP were prepared, which were stable for at least 11 months. Two different types of tribological tests were carried out: pure sliding conditions and rolling conditions (5% slide to roll ratio). With the aim of analyzing the wear by means of the wear scar diameter (WSD), the wear track depth and the volume of the wear track produced after the first type of the tribological tests, a 3D optical profiler was used. The best tribological performance was found for the Nd alloy compound nanodispersion, with reductions of 29% and 67% in friction and WSD, respectively, in comparison with TMPTO. On the other hand, rolling conditions tests were utilized to study friction and film thickness of nanolubricants, determining that Fe3O4 (6.3 nm) nanolubricant reduces friction in comparison to TMPTO.

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Section: Introductionmentioning

confidence: 99%

Tribological Behavior of Nanolubricants Based on Coated Magnetic Nanoparticles and Trimethylolpropane Trioleate Base Oil

et al. 2020

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“…A explicação para tal melhoria no desgaste [19] vem de razões químicas, onde as substâncias presentes nos óleos de motores (anti-fricção e anti-desgaste) reagiriam com a parede da superfície de contato, com a adição das nanopartículas e à altas temperaturas, há uma reação de substituição que forma uma fina camada enriquecida pelo cobre. [1] Foi comparado o coeficiente de fricção de óleos com e sem adição do nanocobre [20] e teve como resultado uma redução em média de 60% no coeficiente quando houve adição da nanopartícula ao óleo à 40°C e cerca de 30% em temperaturas mais elevadas.…”

Section: óLeo Lubrificante Automotivosunclassified

Obtenção De Nanopartículas De Cobre Para a Indústria Automotiva

Silva¹,

Lebrão²,

Lebrão³

et al. 2018

Blucher Engineering Proceedings

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“…Since emerging as a technique to fabricate advanced materials, nanotechnology has provided properties superior to those of traditional bulk materials, and nanomaterials have been intensively used as additives for enhancing lubricant performance. Many nanomaterials such as copper [8], MoS 2 [9], PbS [10], WS 2 [11], Zinc borate [12], ZrS 2 [13], boric acid [14,15], and SiO 2 [16], have been employed for this purpose. Carbon nanomaterials with many allotropes have remarkable lubricating properties and have also been utilized as additives to improve the performance of lubricant oils.…”

Section: Introductionmentioning

confidence: 99%

Scalable Fabrication of Modified Graphene Nanoplatelets as an Effective Additive for Engine Lubricant Oil

La¹,

Truong²,

Pham³

et al. 2020

Nanomaterials

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The use of nano-additives is widely recognized as a cheap and effective pathway to improve the performance of lubrication by minimizing the energy loss from friction and wear, especially in diesel engines. In this work, a simple and scalable protocol was proposed to fabricate a graphene additive to improve the engine lubricant oil. Graphene nanoplates (GNPs) were obtained by a one-step chemical exfoliation of natural graphite and were successfully modified with a surfactant and an organic compound to obtain a modified GNP additive, that can be facilely dispersed in lubricant oil. The GNPs and modified GNP additive were characterized using scanning electron microscopy, X-ray diffraction, atomic force microscopy, Raman spectroscopy, and Fourier-transform infrared spectroscopy. The prepared GNPs had wrinkled and crumpled structures with a diameter of 10–30 µm and a thickness of less than 15 nm. After modification, the GNP surfaces were uniformly covered with the organic compound. The addition of the modified GNP additive to the engine lubricant oil significantly enhanced the friction and antiwear performance. The highest reduction of 35% was determined for the wear scar diameter with a GNP additive concentration of approximately 0.05%. The mechanism for lubrication enhancement by graphene additives was also briefly discussed.

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Experimental investigation of the tribological behavior of lubricants with additive containing copper nanoparticles

Cited by 153 publications

References 17 publications

Tribological Behavior of Nanolubricants Based on Coated Magnetic Nanoparticles and Trimethylolpropane Trioleate Base Oil

Tribological Behavior of Nanolubricants Based on Coated Magnetic Nanoparticles and Trimethylolpropane Trioleate Base Oil

Obtenção De Nanopartículas De Cobre Para a Indústria Automotiva

Scalable Fabrication of Modified Graphene Nanoplatelets as an Effective Additive for Engine Lubricant Oil

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