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Journal articles on the topic 'Nano-lubricant'

Author: Grafiati

Published: 5 June 2025

Last updated: 16 July 2025

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1

Zhao, Yan Hui, Xi Liang Dai, and Jia Xi Zhang. "Research on Properties of Automobile Lubricant Containing Nano-Ceramic Additives." Advanced Materials Research 503-504 (April 2012): 700–704. http://dx.doi.org/10.4028/www.scientific.net/amr.503-504.700.

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This paper makes road test on two kinds of engine lubricant, one contains nano-ceramic additives, and one does not. Results show that the lubricant containing nano-ceramic additives can fully meet the requirements of automotive engine, and nano-ceramic lubricant is superior in anti-wear properties to other lubricant in experiment, and nano-ceramic additives can improve the anti-wear properties of lubricant.

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2

Prakash, E., and K. Sivakumar. "Experimental Analysis of Damping and Tribological Characteristics of Nano-CuO Particle Mixed Lubricant in Ball Bearings." International Journal of Nanoscience 14, no. 03 (2015): 1450026. http://dx.doi.org/10.1142/s0219581x14500264.

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Experimental analysis of damping capacity and tribological characteristics of nano CuO added Servosystem 68 lubricant is attempted. CuO nano particles were synthesized by aqueous precipitation method and characterized. Prior to dispersion into lubricant, CuO nano particles were coated with 0.2 wt.% surfactant (Span-80) to stabilize the nano fluid. Tribological characteristics of particle added lubricant were tested in ASTM D 4172 four ball wear tester. Scanning electron microscopy test results of worn surfaces of nano CuO particle added lubricant were smoother than base lubricant. The particle

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Niraj, N. Raja, and D. Khanderao Avinash. "Review on Effect of Use of Nano-Particles on Performance of Refrigeration System." Advancement in Mechanical Engineering and Technology 7, no. 2 (2024): 5–13. https://doi.org/10.5281/zenodo.11109495.

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<em>Nano refrigerant & Nano lubricant, classes of nano fluids, are gaining importance in field of design & analysis of thermal engineering systems due to improved thermo-physical &  heat transfer characteristics of nano refrigerant/nano lubricant which improves overall performance of system. The nano refrigerant & nano lubricant can be used in vapor compression refrigeration system (VCRS) without any modification in system. The nano refrigerant contains suspension of nano particles in different concentration. This refrigerant based nano fluids, nano refrigerant enhances th

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Tzeng, S. C., Wei Ping Ma, C. H. Liu, Wen Yuh Jywe, and Yung Cheng Wang. "Mechanisms of Heat Transfer in Rotary Shaft of Rotating Machine with Nano-Sized Particles Lubricant." Materials Science Forum 505-507 (January 2006): 31–36. http://dx.doi.org/10.4028/www.scientific.net/msf.505-507.31.

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This study presents an analysis of surfactant added by CuO and Al2O3 nano-sized particles of different percentages. After adding suspending nanocrystalline particles into lubricant of machines, the nano-sized particles will augment the heat transfer characteristics of fluids. Some former studies showed that such liquids pose a great potential for heat transfer enhancement. By applying nanofluids to heat transfer of machine lubricant, this paper attempts to explore dominating factors of heat transfer performance from various weight concentrations of nano-sized particles, the correlation among w

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Lu, Ziyan, Qingqing Lin, Zhaotao Cao, et al. "MoS2 Nanomaterials as Lubricant Additives: A Review." Lubricants 11, no. 12 (2023): 527. http://dx.doi.org/10.3390/lubricants11120527.

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Improving the lubricating properties of base oils through additives is a crucial objective of tribological research, as it helps to reduce friction and wear of materials. Molybdenum disulfide (MoS2) is a 2D nanomaterial with excellent tribological properties that is often used as a lubricant additive. Several studies have been conducted on the preparation and utilization of MoS2 and its nanocomposites as lubricant additives. This paper reviews the research progress on MoS2 nanomaterials as lubricant additives. It firstly introduces various synthesis methods of MoS2 nanomaterials while focusing

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6

Jwo, Ching Song, Lung Yue Jeng, Ho Chang, and Sih Li Chen. "Research of Vacuum Pump with Nano-Lubricant." Key Engineering Materials 364-366 (December 2007): 867–72. http://dx.doi.org/10.4028/www.scientific.net/kem.364-366.867.

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This study used the Al2O3 nano-lubricant produced from the direct synthesis method was used as the experimental samples and the ultrasonic vibration was used for dispersing the nanoparticles into three types of the weight fraction (0.1, 0.2, 0.3%wt). The base solvent was the lubricant of vacuum pump. The objectives of this study were to discuss the dependence of operating temperature of vacuum pump under the various weight fraction of Al2O3 nanoparticles. In this experiment we added Al2O3 nano-lubricant into the direct drive oil sealed rotary vacuum pump, and used the thermocouple measure the

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Katpatal, Dhananjay C., Atul B. Andhare, and Pramod M. Padole. "Viscosity behaviour and thermal conductivity prediction of CuO-blend oil based nano-blended lubricant." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 233, no. 8 (2018): 1154–68. http://dx.doi.org/10.1177/1350650118819634.

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Lubricants play a major role in mechanical machines and studies on various nanolubricants are reported in the literature. This work deals with nanolubricants using blend of oils as base for nanolubricants. Nano-blended lubricants were prepared with a blend of ISO VG46 oil (mineral oil) and Jatropha oil (non-edible vegetable oil) and using them in proportions of 90:10 and 80:20 by dispersing 0.5–3 wt.% of surface-modified CuO nanoparticles by a two-step method. Various properties of these oils such as dispersion stability, viscosity and thermal conductivity were determined. Experimental values

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Ranjbarzadeh, Ramin, and Raoudha Chaabane. "Experimental Study of Thermal Properties and Dynamic Viscosity of Graphene Oxide/Oil Nano-Lubricant." Energies 14, no. 10 (2021): 2886. http://dx.doi.org/10.3390/en14102886.

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This experimental study was carried out based on the nanotechnology approach to enhance the efficacy of engine oil. Atomic and surface structures of graphene oxide (GO) nanoparticles were investigated by using a field emission scanning electron microscope and X-ray diffraction. The nano lubricant was produced by using a two-step method. The stability of nano lubricant was analyzed through dynamic light scattering. Various properties such as thermal conductivity, dynamic viscosity, flash point, cloud point and freezing point were investigated and the results were compared with the base oil (Oil

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Bachchhav, Bhanudas, Yash Anecha, and Balraj Waghmare. "Tribological Performance Evaluation of TMPTO Based Nano-Lubricants." Journal of Manufacturing Engineering 18, no. 3 (2023): 091–95. http://dx.doi.org/10.37255/jme.v18i3pp091-095.

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In recent years, nano lubricants have gained significant attention due to their potential to enhance lubricant efficacy and reduce friction and wear. This research work aims to investigate the effects of TiO2 nanoparticles into trimethylolpropane trioleate (TMPTO) based bio-lubricant on its friction and wear characteristics. The four-ball tester is employed to evaluate the lubricating performance of the TMPTO-TiO2 nano-lubricant at varying additive concentrations under controlled conditions of speed, load, and temperature. The parameters were ranked based on the results of the Taguchi experime

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Razzaq, M. E. Abdur, J. U. Ahamed, and M. A. M. Hossain. "Effect of TiO2/MO Nano-lubricant on Energy and Exergy Savings of an Air Conditioner using Blends of R22/R600a." International Journal of Automotive and Mechanical Engineering 17, no. 4 (2020): 8283–97. http://dx.doi.org/10.15282/ijame.17.4.2020.06.0626.

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This experimental study determines the energetic and exergetic performances of an air conditioner using blend of R22/R600a (60:40 by mass) for different volume fractions (0.1 %, 0.2 %, 0.3 %, and, 0.4 %) of TiO2 nanoparticles dispersed into mineral oil (MO). Energetic and exergetic parameters investigated in this experiment including power consumption, cooling effect, discharge pressure and temperature, coefficient of performance (COP), exergy destruction (irreversibility), irreversibility in the component, sustainability index (SI) and exergy efficiency at different operating conditions. The

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11

Hirani, Harish, Dharmender Jangra, and Kishan Nath Sidh. "Experimental Investigation on the Wear Performance of Nano-Additives on Degraded Gear Lubricant." Lubricants 11, no. 2 (2023): 51. http://dx.doi.org/10.3390/lubricants11020051.

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This study investigates the degradation of a commercially available gear lubricant and the potential of nano-additives to mitigate such degradation. Initially, we performed an experimental study on the chemical degradation of commercially available API GL-4 EP90 gear lubricant by mixing the different concentrations of aqueous hydrochloric acid (aqueous HCl) varying from 0.0005% v/v up to 0.0025% v/v, while maintaining overall water content in the oil below the prescribed limits. The degradation was monitored using the pH value, total acid number (TAN) value, and attenuated total reflectance-Fo

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12

E, Sankar, and Duraivelu K. "Evaluation of Some Thermophysical Properties of SN500 Lubrication Oil Blended with SIO2, AL2O3 and TIO2 Nano-Additives, Using Fuzzy Logic." Acta Mechanica et Automatica 18, no. 2 (2024): 352–60. http://dx.doi.org/10.2478/ama-2024-0039.

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Abstract Nano-additives are generally blended with the base lubricant oil, to enhance the lubricant characteristics such as wear, coefficient of friction (CoF), thermal conductivity, density, and flash and fire points of the lubricant. In this research, nano-additives of SiO2, Al2O3 and TiO2 are blended with the base SN500 oil with different proportions of mixture. When these three nanoparticles are used together in base oil, they enhance most of the desirable properties of a lubricant; 27 samples with three different levels of a mixture of nano-additives are identified using factorial design

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Okokpujie, Imhade P., Lagouge K. Tartibu, Jude E. Sinebe, Adeyinka O. M. Adeoye, and Esther T. Akinlabi. "Comparative Study of Rheological Effects of Vegetable Oil-Lubricant, TiO2, MWCNTs Nano-Lubricants, and Machining Parameters’ Influence on Cutting Force for Sustainable Metal Cutting Process." Lubricants 10, no. 4 (2022): 54. http://dx.doi.org/10.3390/lubricants10040054.

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Nano-lubricant machining of Aluminum 8112 alloy is the art of sustainable manufacturing of mechanical components used for defense technology and aerospace application. However, machining aluminum alloys generates excess heat, which tends to increase the cutting force (F.C.), due to the material adhesion of the workpiece on the cutting tool. The challenge has drawn researchers’ attention to introducing nano-lubrication processes. This study focused on the comparative assessment of eco-friendly vegetable oil-based-TiO2 and MWCNTs nano-lubricant on cutting force during the machining of the Alumin

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14

Jang, Si Youl. "Computation of Fluid Film Pressures by Measuring the Elastohydrodynamic Lubrication Film Thickness with Nano-Scale Resolution." Key Engineering Materials 326-328 (December 2006): 413–16. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.413.

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Many EHL (elastohydrodynamic lubrication) experiments have been performed with the regard to measuring the film thickness variations according to contact conditions, such as contact load, sliding-rolling ratio, contact accelerations for the verification purpose of lubricant characteristics. The measured images of film thickness by the interferometry system are easily converted into film thickness values even both in nanometer scale and resolution with the help of image processing technology. However, only the measurement of the EHL film thickness is not enough to verify the lubricant character

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15

Ahmaida, Yousef Alamin A., Seyma Korkmaz, Sena Kabave Kilincarslan, Onur Can Sirvan, and M. Huseyin Cetin. "Investigation of interaction of extreme pressure additive, load and sliding speed parameters with silver nano-particles in wear environment." Surface Topography: Metrology and Properties 9, no. 4 (2021): 045020. http://dx.doi.org/10.1088/2051-672x/ac311f.

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Abstract This study aims to minimize the wear of brass-based sliding bearing materials by using extreme-pressure and nano-silver added lubricants. The nano-fluids used in the experiments were characterized by the Zeta test, size measurement, absorbance graphs, wettability analyses and TEM imaging. The effect of extreme-pressure (5%, 10% and 15%) and nano-silver (1%, 5% and 9%) concentration ratios and the interaction of lubricants with load and speed parameters were analyzed with ball-on-plate wear experiments. The results were analyzed by evaluating the friction coefficient and wear volume va

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16

Sikdar, Soumya, and Pradeep L. Menezes. "Enhancing Lubrication Performance of Plastic Oil Lubricant with Oleic Acid-Functionalized Graphene Nanoplatelets and Hexagonal Boron Nitride Solid Lubricant Additives." Lubricants 12, no. 7 (2024): 251. http://dx.doi.org/10.3390/lubricants12070251.

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The study explored the viability of using waste plastic oil (PO) as an alternative lubricant to petroleum-based lubricants in industrial settings. To enhance the lubrication performance of the PO, this study incorporated cost-efficient, oleic acid-modified, graphene nano platelets [GNP (f)] and hexagonal boron nitride [hBN (f)] nano solid lubricant additives into the PO in various concentrations, forming functionalized nano lubricants. The PO and its functionalized nano lubricant’s rheological, dispersion stability, thermal degradation, friction, and wear performance were investigated. Results

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D. Gadekar, Tushar, Dinesh N. Kamble, and Nitin H. Ambhore. "Experimental Study on Gear EP Lubricant Mixed with Al2O3/SiO2/ZrO2 Composite Additives to Design a Predictive System." Tribology in Industry 45, no. 4 (2023): 579–90. http://dx.doi.org/10.24874/ti.1461.03.23.07.

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The friction and wear volume loss is the main cause for a failure & energy losses in heavy-duty gearboxes and it can be controlled by using a modified lubricant mixed with nano additives. This study investigates the wear and friction behaviour of gear EP oil blended with composite nano additives (Al2O3/SiO2/ZrO2) in combination with Zinc dialkyl dithiophosphate. All trials were conducted under various concentrations of composite nanoparticles, at loads of 60-100 N and sliding velocities of 0.65-1.5 m/s. The experimental study on antiwear and anti-friction properties for the oil was conduct

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18

Rasoolizadeh Shooroki, Abolfazl, Asghar Dashti Rahmatabadi, and Mahdi Zare Mehrjardi. "Effect of using hybrid nano lubricant on the thermo-hydrodynamic performance of two lobe journal bearings." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 236, no. 6 (2021): 1167–85. http://dx.doi.org/10.1177/13506501211053089.

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Due to the wide range of journal bearings applications in the industrial machine, significant efforts have been made by tribology researchers to improve their performance in recent years. Designing new bearings geometry and using lubricants with new chemical compounds including additives are the most common solutions proposed to enhance the performance of journal bearing supports. New advancements in nanotechnology and producing the various types of nano particles have provided the chance of upgrading the properties of commercial lubricants. According to the different effect of nano fluids on

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Urbaniak, Wiesław, Tomasz Majewski, Iwona Powązka, Grzegorz Śmigielski, and Aneta D. Petelska. "Study of Nano h-BN Impact on Lubricating Properties of Selected Oil Mixtures." Materials 15, no. 6 (2022): 2052. http://dx.doi.org/10.3390/ma15062052.

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Our experiments aimed to study the influence of layered materials with nanometric-scale particles, which are part of lubricant oils, on their tribological properties. The object of this study was a lubricant oil made using base oil PAO4, which contained nanoparticle hexagonal boron nitride (nano h-BN) and a dispersant based on succinic acid imide. Comparative tests for engine oil (CB30) were also performed. The paper presents the method of preparing the test material and the tribological test results, including wear spot diameter (wear mark), limit wear load, and seizure load. The test results

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Wiśniewska-Weinert, H. "Surface Modification Of The High Temperature Porous Sliding Bearings With Solid Lubricant Nanoparticles." Archives of Metallurgy and Materials 60, no. 3 (2015): 2209–14. http://dx.doi.org/10.1515/amm-2015-0366.

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Abstract A surface modification of stainless steel bearing sleeves is developed to improve the tribology characteristics at high temperature. Solid lubricant nano- and microparticles are applied for this purpose. To create the quasi-hydrodynamic lubrication regimes, the solid lubricant powder layer is made by developed pressure impregnation technique. Porous sliding bearing sleeve prototypes were made by powder metallurgy technique. The purpose of the paper is to define the friction and wear characteristics of the sleeves and to determine the influence of sealing of the sliding interface on th

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Abdel-Rehim, Ahmed A., Sayed Akl, and Sherif Elsoudy. "Investigation of the Tribological Behavior of Mineral Lubricant Using Copper Oxide Nano Additives." Lubricants 9, no. 2 (2021): 16. http://dx.doi.org/10.3390/lubricants9020016.

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In this study, tribological properties of custom formulated and stabilized nano lubricant are investigated. Spherical CuO nanoparticles are suspended in 20W-50 mineral base lubricant using Oleic Acid (OA) as a surfactant. Three different nano lubricant concentrations with 0.2, 0.5, and 1 wt.% were analyzed through ASTM G-99 pin-on-disc tribometer standardized test under boundary/mixed lubrication regimes. The generated friction and wear analyses confirm a consolidation of tribological properties with a reduction in friction coefficient in the range of 14.59–42.92%, compared with the base lubri

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Ye, Xinghe. "Nanoparticle Additives for Improving Lubricant Performance." Highlights in Science, Engineering and Technology 17 (November 10, 2022): 166–75. http://dx.doi.org/10.54097/hset.v17i.2580.

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The lubricant is an important industrial product widely used in vehicles and other machines. The main purpose of a lubricant is to reduce friction loss and save energy. However, with the development of the vehicle, the appearance of electrical vehicles, for example, and machines, lubricants need to satisfy more demands. Normally, this was fixed by adding additives. Nanoparticles are one of the best additives because they can efficiently reduce friction loss and provide a more useful function. But nanoparticles may form sedimentation in lubrication, which will increase friction loss and cause d

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Tagawa, Norio, Noritaka Yoshioka, and Atsunobu Mori. "Effect of Ultra-Thin Liquid Lubricant Films on Dynamics of Nano-Spacing Flying Head Sliders in Hard Disk Drives." Journal of Tribology 126, no. 3 (2004): 565–72. http://dx.doi.org/10.1115/1.1739409.

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This paper describes the effect of ultra-thin liquid lubricant films on air bearing dynamics and flyability of nano-spacing flying head sliders in hard disk drives. The dynamics of a slider was monitored using Acoustic Emission (AE) and Laser Doppler Vibrometer (LDV). The disks with lubricant on one half of disk surface thicker than the other half as well as with uniform thickness lubricant were used to investigate the interactions between the slider and lubricant film experimentally. As a result, it was found that the flying height at which the slider-lubricant contact occurs depends on the l

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Atakul Savrık, Sevdiye, Burcu Alp, Fatma Üstün, and Devrim Balköse. "NANO ZINC BORATE AS A LUBRICANT ADDITIVE." Journal of the Turkish Chemical Society, Section A: Chemistry 5, sp.is.1 (2017): 45–52. http://dx.doi.org/10.18596/jotcsa.370763.

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张, 文刚. "The Nano-Diamond Lubricant of Excellent Performances." Material Sciences 08, no. 02 (2018): 81–88. http://dx.doi.org/10.12677/ms.2018.82010.

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He, Gu, Xiang Wang, Mengnan Zhou, Xiaohong Zhang, and Jinliang Qiao. "Novel thermothickening lubricant with elastomeric nano-particles." RSC Advances 5, no. 82 (2015): 67343–47. http://dx.doi.org/10.1039/c5ra09052k.

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Zhu, Yuqin, Jia Liu, Liang Li, Weikang Sun, Wei Tang, and Lei Wang. "Tribological Performance of Nano-CeO2/BNH2 Compound Lubricant Additive." Coatings 14, no. 12 (2024): 1572. https://doi.org/10.3390/coatings14121572.

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To improve lubricant performance and extend the service life of machinery, the friction reduction and anti-wear performance of nano-cerium oxide (nano-CeO2) and nitrogen-containing heterocyclic borate (BNH2) composite additives were studied in this work, with the goal of obtaining better lubrication effects than a single additive. The results showed that the nano-CeO2 modified with Span80 had good dispersion stability in the base oil. The optimal addition mass fractions of single nano-CeO2 and BNH2 were 0.6 wt% and 1.0 wt%, respectively. Compared with the base oil, 0.6 wt% nano-CeO2 reduced th

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Okokpujie, Imhade Princess, and Lagouge Kwanda Tartibu. "Performance Investigation of the Effects of Nano-Additive-Lubricants with Cutting Parameters on Material Removal Rate of AL8112 Alloy for Advanced Manufacturing Application." Sustainability 13, no. 15 (2021): 8406. http://dx.doi.org/10.3390/su13158406.

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The implementation of nano-additives in machining fluid is significant for manufacturers to attain a sustainable manufacturing process. The material removal rate (MRR) is a significant process of transforming solid raw materials into specific shapes and sizes. This process has many challenges due to friction, vibration, chip discontinuity when machining aluminum alloy, which has led to poor accuracy and affected the fatigue life of the developed material. It is worth noting that aluminum 8112 alloy is currently being applied in most engineering applications due to its lightweight-to-strength r

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Zhu, Yuchuan, Hongmei Zhang, Na Li, and Zhengyi Jiang. "Friction and Wear Characteristics of Fe3O4 Nano-Additive Lubricant in Micro-Rolling." Lubricants 11, no. 10 (2023): 434. http://dx.doi.org/10.3390/lubricants11100434.

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As nanotechnology has developed, some nano-additives have been employed to improve the performance of lubricants. The mechanisms of nano-additives still need to be investigated. The wear characteristics of Fe3O4 nano-additive lubricant were investigated in this study. Different diameters of Fe3O4 nanoparticles were mixed in basic oil using an ultrasonic mixer. The new lubricant was used for analytical tests at room temperature. The results showed that nano-lubricants with 20 nm nanoparticles increase the oil film strength. The coefficient of friction was reduced when 20 nm diameter 8 wt% Fe3O4

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Gill, Jatinder, Damola S. Adelekan, and Olayinka S. Ohunakin. "Experimental Investigation of Vapour Compression Refrigeration Systems using 0.4g 13nm Al2O3-lubricant based LPG Refrigerant as Working Fluid." Thermal Science and Engineering 3, no. 1 (2020): 26. http://dx.doi.org/10.24294/tse.v3i1.454.

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Application of nanoparticles have been proven to aid heat transfer in engineering systems. This work experimentally investigated the performance of a domestic refrigerator under the influence of Al2O3 nanoparticles dispersed in mineral oil based lubricant at different charges (40, 60 and 80 g) of LPG refrigerant. The performance of the system was then investigated using test parameters including: power consumption, evaporator air temperature (pull-down time), to attain the specified International Standard Organisation (ISO) requirement for standard evaporator air temperature with small refrige

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Sajeeb, Ayamannil, and Perikinalil K. Rajendrakumar. "Tribological assessment of vegetable oil based CeO2/CuO hybrid nano-lubricant." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 234, no. 12 (2020): 1940–56. http://dx.doi.org/10.1177/1350650119899208.

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Vegetable oil based lubricants attract much attention nowadays due to their excellent boundary lubrication performance and biodegradability. Coconut oil is a vegetable oil with excellent lubricating properties which provides low friction coefficient and better oxidation stability. The purpose of this study is to investigate the performance of coconut oil based new hybrid CeO2/CuO nano-lubricant with various ratios of CeO2/CuO viz. 25/75, 50/50, and 75/25 at different concentrations (0.1, 0.25, 0.5, and 1.0 wt%). The rheological, thermal, thermo-gravimetric, and tribological evaluations were co

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Rajbhandari Nyachhyon, Armila, Sanoj Hajam, and Hira Mani Trital. "Nano zinc oxide additive for the enhancement of lubricant properties." Scientific World 15, no. 15 (2022): 26–32. http://dx.doi.org/10.3126/sw.v15i15.45643.

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Zinc oxide (ZnO) nano additives were successfully synthesized in laboratory by precipitation technique. The XRD showed crystalline nature of ZnO with the average crystallite size of 16 nm. The stretching band of ZnO was found at around 400 cm-1 to 600 cm-1 wave number in FTIR. The prepared nano particle have been used as nano additive and sodium lauryl sulphate (SLS) as surfactant, in base oil to improve physio-chemical parameter of lubricants. The result revealed that the additive blended base oil (lubricant) has shown excellent lubrication properties. The higher kinematic viscosity of 90.72

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Luo, Jianbin, Ping Huang, Shizhu Wen, and Lawrence K. Y. Li. "Characteristics of Liquid Lubricant Films at the Nano-Scale." Journal of Tribology 121, no. 4 (1999): 872–78. http://dx.doi.org/10.1115/1.2834149.

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Characteristics of a liquid lubricant film at the nanometer scale are discussed in the present paper. The variations of the film thickness in a central contact region between a glass disk and a super-polished steel ball with lubricant viscosity, rolling speed, substrate surface tension, running time, load, etc. have been investigated. Experimental results show that the variation of film thickness in the thin film lubrication (TFL) regime is largely different from that in the elastohydrodynamic lubrication (EHL) regime. The critical transition point from EHL to TFL is closely related to lubrica

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Sarrafzadeh Javadi, Farhood, and Rahman Saidur. "Thermodynamic and Energy Efficiency Analysis of a Domestic Refrigerator Using Al2O3 Nano-Refrigerant." Sustainability 13, no. 10 (2021): 5659. http://dx.doi.org/10.3390/su13105659.

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Refrigeration systems have experienced massive technological changes in the past 50 years. Nanotechnology can lead to a promising technological leap in the refrigeration industry. Nano-refrigerant still remains unknown because of the complexity of the phase change process of the mixture including refrigerant, lubricant, and nanoparticle. In this study, the stability of Al2O3 nanofluid and the performance of a nano-refrigerant-based domestic refrigerator have been experimentally investigated, with the focus on the thermodynamic and energy approaches. It was found that by increasing the nanopart

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Hisham, Sakinah, Kumaran Kadirgama, Hussein A. Mohammed, et al. "Hybrid Nanocellulose-Copper (II) Oxide as Engine Oil Additives for Tribological Behavior Improvement." Molecules 25, no. 13 (2020): 2975. http://dx.doi.org/10.3390/molecules25132975.

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Friction and wear are the main factors in the failure of the piston in automobile engines. The objective of this work was to improve the tribological behaviour and lubricant properties using hybrid Cellulose Nanocrystal (CNC) and Copper (II) oxide nanoparticles blended with SAE 40 as a base fluid. The two-step method was used in the hybrid nanofluid preparation. Three different concentrations were prepared in a range of 0.1% to 0.5%. Kinematic viscosity and viscosity index were also identified. The friction and wear behavior were evaluated using a tribometer based on ASTM G181. The CNC-CuO nan

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Yahayaa, Muhammad Sharil, Nurliyana Abdul Raof, Zulkifli Ibrahim, Azniza Ahmad, and Chandima Gomes. "Modifications Required for Palm Oil to be Qualified as a Mechanical Lubricant." International Journal of Manufacturing, Materials, and Mechanical Engineering 9, no. 1 (2019): 50–66. http://dx.doi.org/10.4018/ijmmme.2019010104.

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Adaptation of apt chemical modifications and incorporation of suitable additives, especially, nano-additives, could improve the properties of bio-lubricants derived from palm oil. This makes it one of the best alternatives to mineral oil lubricants. Possible chemical modifications are hydrogenation, esterification/ transesterification, epoxidation and metathesis. Feasible additives and nano-additives available in the market for minimizing the drawbacks of palm oil as a lubricant are ionic liquids, phosphorus, sulphur, zinc dialkyl dithiophosphate, metal, metal oxides, metal sulphides, carbonat

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Dubey, Mukesh Kumar, Jayashree Bijwe, and S. S. V. Ramakumar. "Effect of dispersant on nano-PTFE based lubricants on tribo-performance in fretting wear mode." RSC Advances 6, no. 27 (2016): 22604–14. http://dx.doi.org/10.1039/c5ra16795g.

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SEKINE, Yukio, Shojiro MIYAKE, Shuichi WATANABE, and Junichi NOSHIRO. "Tribology of Nano-period Multilayer Solid Lubricant Films." Proceedings of the JSME annual meeting 2002.5 (2002): 111–12. http://dx.doi.org/10.1299/jsmemecjo.2002.5.0_111.

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39

Guo, Qian, Pil Seung Chung, Myung S. Jhon, and Hyoung Jin Choi. "Nano-Rheology of Single Unentangled Polymeric Lubricant Films." Macromolecular Theory and Simulations 17, no. 9 (2008): 454–59. http://dx.doi.org/10.1002/mats.200800048.

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Kozytskyi, S. V. ,., and S. V. Kiriian. "SELF-ORGANIZATION OF NANO-SIZED METALCONTAINING LUBRICANT ADDITIVES." SHIP POWER PLANTS 44, no. 1 (2022): 20–27. http://dx.doi.org/10.31653/smf44.2022.20-27.

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Effective lubrication between rubbing surfaces is required to reduce friction and wear. Conventional lube oils traditionally contain a package of additives that significantly improve their tribological properties. Antiwear and load-carrying additives improve boundary lubrication and reduce wear of the rubbing surfaces due to the formation of quasi-liquid crystalline layers on them [1]. Such structured layers with molecular ordering determine the tribological characteristics of the friction units

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41

Mohamed, HudaElslam A. S., and Unal Camdali. "EVALUATION OF A REFRIGERATION SYSTEM BASED ON NANO-REFRIGERANTS AND NANO LUBRICANT." International Journal of Materials Engineering and Technology 20, no. 2 (2021): 93–111. http://dx.doi.org/10.17654/mt020020093.

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42

Nan, Feng, Yi Xu, Binshi Xu, Fei Gao, Yixiong Wu, and Zhuguo Li. "Tribological Performance of Attapulgite Nano-fiber/Spherical Nano-Ni as Lubricant Additive." Tribology Letters 56, no. 3 (2014): 531–41. http://dx.doi.org/10.1007/s11249-014-0430-0.

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Luo, Juhua, Ning Yu, Mingliang Cheng, Wei Yao, and Jianguang Xu. "Synthesis of Novel Macromolecular Coupling Agent and its Application in Nano-Copper Lubricating Oil." Current Nanoscience 16, no. 2 (2020): 253–58. http://dx.doi.org/10.2174/1573413715666190614142806.

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Background: Due to temperature-insensitive and limited tribochemical reaction, nanolubricants have received tremendous focus over the past few years. The addition of nanoparticles in lubricant has been demonstrated to reduce the coefficient of friction and increase the loadcarrying capability of lubricant in coupled surfaces. Much attention has been paid to copper nanoparticles for their perfect friction reduction and wear resistance performances. However, it is difficult to maintain stable dispersion in lubricant oil for the aggregation of copper nanoparticles. Methods: A novel macromolecular

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Patel, Jankhan, and Amirkianoosh Kiani. "Tribological Capabilities of Graphene and Titanium Dioxide Nano Additives in Solid and Liquid Base Lubricants." Applied Sciences 9, no. 8 (2019): 1629. http://dx.doi.org/10.3390/app9081629.

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In this study, the tribological behavior of both liquid (oil) and semi-liquid (grease) lubricants enhanced by multilayer graphene nano platelets and titanium dioxide nano powder was evaluated using ball-on-disk and shaft-on-plate tribo-meters. Oil samples for both 2D graphene nano platelets (GNP) and titanium nanopowders (TiNP) were prepared at three concentrations of 0.01 %w/w, 0.05 %w/w and 0.1 %w/w. In addition, 0.05% w/w mixtures of GNP and TiNP were prepared with three different ratios to analyze collective effects of both nano additives on friction and wear properties. For semi-liquid lu

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Wang, Xiao Li, Bin Shi Xu, Yi Xu, Qian Liu, and Pei Jing Shi. "The Nano-Effect of Nanometer Lubricating Material in Equipment Maintenance." Advanced Materials Research 154-155 (October 2010): 716–20. http://dx.doi.org/10.4028/www.scientific.net/amr.154-155.716.

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The nano-effects of nano-Cu lubricating material in equipment maintenance were researched from reducing friction effect, antiwear effect and repairing effect by comparing tribology properties of nano-Cu lubricating material with micro-Cu material. The nano-effect mechanism was discussed. The results indicated that the reducing friction effect and the antiwear effect can make the friction coefficient and the worn track width of lubricant reduce to 16% and 40% respectively. The repairing effect can make the nano-Cu lubricating material forms repairing film on wore surface. That of all is decided

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Katpatal, Dhananjay C., Atul B. Andhare, and Pramod M. Padole. "Performance of nano-bio-lubricants, ISO VG46 oil and its blend with Jatropha oil in statically loaded hydrodynamic plain journal bearing." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 234, no. 3 (2019): 386–400. http://dx.doi.org/10.1177/1350650119864242.

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In this experimental study, three stable nano-bio-lubricants were prepared by dispersing CuO nanoparticles in three bio-lubricants and later investigations were carried out to determine pressure distribution and frictional performance of ISO VG46 oil, bio-lubricants and nano-bio-lubricants in hydrodynamic journal bearing under different loads and speeds. The experimental results revealed that pressure of oils inside bearing depends on viscosity of oils. Addition of nanoparticles in bio-lubricants did not help to enhance the maximum pressure of oil inside bearing. Frictional performance of ISO

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Bhatkulkar, Harish, Himanshu D. Wagh, Hemant Bansod, and Pankaj Jaiswal. "Nano Fluids used in VCRS: A Review." SAMRIDDHI : A Journal of Physical Sciences, Engineering and Technology 14, no. 01 SPL (2022): 133–37. http://dx.doi.org/10.18090/samriddhi.v14spli01.24.

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This study highlights the utilization of nano-particle fluids as the refrigerants in the conventional vapour compression based thermal systems due to their super improvement in thermo-physical properties together with heat transfer capacity to enhance performance of the system described by its COP and reliability of refrigeration system. Further, demanding situations of performance enhancement of system the usage of nano additive refrigerants had been presented. Lubricant oil is described as the important part inside the complete refrigeration system, typically for the operation characteristic

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Tóth, Álmos, Á. I. Szabó, and R. Kuti. "Tribological properties of nano-sized ZrO2 ceramic particles in automotive lubricants." FME Transactions 49, no. 1 (2021): 36–43. http://dx.doi.org/10.5937/fme2101036t.

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The demand for decreasing CO2-emission and harmful material content of the exhaust gas of passenger cars requires the improvement of the entire powertrain including the applied lubricants. One of the possible future engines lubricant can be the nano-sized ceramic particles, which can provide positive tribological properties also in the presence of nonmetallic surface materials. This paper presents the experimental investigation of ZrO2 nanoceramic powder as a lubricant additive. The tribological performance of the lubricant samples was experimentally investigated on a ball-on-disc translation

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Ahmed Ali, Mohamed Kamal, Hou Xianjun, Richard Fiifi Turkson, Zhan Peng, and Xiandong Chen. "Enhancing the thermophysical properties and tribological behaviour of engine oils using nano-lubricant additives." RSC Advances 6, no. 81 (2016): 77913–24. http://dx.doi.org/10.1039/c6ra10543b.

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This paper presents the enhancement of the thermophysical properties of engine oil using nano-lubricant additives and a characterization of tribological behaviour in terms of sliding contact interfaces in automotive engines.

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Zhang, Xi Feng, Hong Xia Dong, Zhen Ye Xu, Ke Wei Li, and Min Qin. "Synthesis, Physicochemical, and Tribological Characterization of Nano Lubricant Contained Cu Nanocolloid as Additive." Advanced Materials Research 860-863 (December 2013): 1828–33. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.1828.

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Monocrystalline Cu nanocolloid with 4.3 nm average particle size and 2.3～9.5 nm particle size distribution was successfully synthesized in situ by liquor-phase reduction synthesis, using copper acetate tetrahydrate as precursor, ascorbic acid as reductant, polyethylene sorbitan monooleate （Tween-80） as modifier, and liquid paraffin as solvent. The as-prepared copper nanocolloid was characterized by XRD, SAED, and TEM. Nano-lubricating oil with excellent dispersibility, chemical stability, and compatibility with other additives verified by TG-DSC, was achieved via adding as-prepared nano-copper

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