Reduction In Friction Coefficient Research Articles

PARAMETRIC STUDY OF SUCTION OR BLOWINGEFFECTS ON TURBULENT FLOW OVER A FLATPLATE

The two-dimensional, incompressible, and turbulent boundary layer flow over a flat plate with suction or blowing from a spanwise slot is examined numerically. The mathematical modeling involves the derivation of the governing partial differential equations of the problems. These are the continuity, the momentum, the energy and the (K-ε) turbulence model. Besides, the perfect gas law is also used. A numerical solution of the governing equations is approximated by using a finite volume method, with staggered grid and modified SIMPLE algorithm. A computer program in FORTRAN 90 is built to perform the numerical solution.The developed computational algorithm is tested for the flow over a flat plate (4m) long with uniform suction or blowing velocity ratios of (V/U∞ =± 0.0185, ± 0.0463 and ±0.0925 m/s) are imposed on the slot for Reynolds number of (1.36 x 107 ), based on the plate length. The position of the slot change in the range of (X/L=1/4, 1/2 and 3/4) from leading edge and also, change width of slot in the value equal (0.12, 0.2 and 0.28m).The plate temperature is (70 °C), with the free stream velocity and temperature are (8.6m/s) and (25 °C) respectively. In addition, the effects of pitch angles on the flow field are investigated in the range of (30о   150о).The numerical results show that, for a uniform blowing, location of slot equal (X/L=1/4) from leading edge, a significant reduction of skin friction coefficient, wall shear stress and boundary layer thickness [displacement and momentum] to occur. While, an increase in boundary layer shape factor. Reynolds stress (uv) is more decreased than [(uu) and (vv)], mean velocity profiles in wall coordinates and dimensionless distance (U+, y+) decreases. When slot location is moved downstream to locations (X/L=1/2 or 3/4) a similar behavior can be said and most effective slot is obtained as (slot at X/L= 3m) from leading edge. While width of slot equal (0.28m) is better than values equal (0.12m and 0.2m). An opposite observations for the case of suction. The numerical results are compared with available numerical results and experimental data and a satisfactory results are obtained.

Recycling Automotive Plastic Waste: Residual Polyvinyl Butyral (rPVB) as Solid Lubricant in Polyoxymethylene (POM) Blends

Polyoxymethylene (POM) is an engineering thermoplastic commonly used in tribological applications due to its low friction and auto-lubrication properties. To improve its performance further and broaden its applications to higher sliding speeds and loads, it is commonly reinforced with different particles, fibers, or solid lubricants. In this study, the effect of adding residual polyvinyl butyral (rPVB) from automotive windshields production lines on the tribological performance of POM during pin-on-disk wear tests at different loads (12, 15, and 18 N) and sliding speeds (0.25, 0.50, and 0.75 m/s) is investigated. It was found that rPVB acts as a solid lubricant, reducing the coefficient of friction (CoF) up to 50%. It is suggested that the formation of a protective layer of adhered material on the wear track is the mechanism behind CoF reduction. Melt flow index, Shore D hardness and elastic properties decrease linearly with rPVB content. However, the reduction in tensile strength, and thus shear strength of the blends, seems to be more significant on their CoF behavior than the reduction in hardness. No trend was found for wear resistance. Under certain sliding conditions rPVB decreased volume loss, but in other cases it increased it. It is suggested that, for the conditions analyzed in this study, adding 10 wt% of rPVB to a POM matrix results in the best balance of tribological performance, with an overall CoF reduction of 36%, and an average volume loss increase of only 1%.

Synergistic effects of melamine functionalized graphene oxide and imidazolium ionic liquid on the tribological performance and thermal stability of polyalphaolefin based hybrid nanolubricants

Tribological and thermophysical characteristics of a new hybrid nanolubricant that incorporates melamine functionalized graphene oxide (mGO) and imidazolium cation based ionic liquid (IL) in a polyalphaolefin (PAO-6) base oil have been investigated. Different formulations of nanolubricants with 0.05 wt%, 0.1 wt% nanosheets and 1 wt% ionic liquid were studied to examine the synergistic effects of surface functionalization and ionic liquid addition on the antifriction and antiwear properties of the PAO-6 base oil. Thermal stability studies involved Thermogravimetric analysis to analyze the oxidation onset and decomposition temperature of different formulatons at varying weight concentrations of nanoadditives. Anti-friction performance was quantified by the coefficient of friction (COF) reduction compared to neat lubricant. The highest reduction in COF was observed for 0.05 wt% mGO + 1 wt% IL with an outstanding 73.33% reduction followed by 0.05 wt% mGO and 0.05 wt% GO with 73% and 67% reduction respectively. Post-wear analysis of the wear scars was performed using 3D optical profiler, SEM micrographs, EDX elemental composition and Raman spectra. The highest reduction in wear depth was observed in the case of PAO-6 + 0.05% mGO with a value of 46.3% followed by a 39.9% reduction in the case of PAO-6 + 0.05% GO. The morphologies of samples containing both ionic liquid and nanosheets exhibited a much smoother surface with the absence of deep grooves and pits which was attributed to the formation of a strongly bonded tribofilm owing to the chemical interactions between ionic liquid capped nanosheets and metal substrate. Strong interfacial interactions also induced a significant increase in the thermal stability of the nanofluids. The maximum shift observed in the oxidation onset temperature compared to neat PAO-6 was 68◦C while the decomposition temperature increased by 61◦C. Due to their excellent friction, wear, and thermal properties, these hybrid nanofluids could be applied in various highly demanding industrial sectors such as automotive, machining operations, aerospace, thermal power plants and micro/nano-electromechanical systems.

Tribological characteristics and film behaviour of polytetrafluoroethylene in jatropha with sodium dodecyl sulphate as surfactant

In this research, a bio lubricant was developed utilising eco-friendly constituents of jatropha oil, polytetrafluoroethylene (PTFE) and sodium dodecyl benzenesulphonate (SDBS), characterised and tested with four-ball tribometer under ASTM D2783 standard. The tribological performance in terms of friction, wear, load carrying ability and evaluation of the film behaviour on stability and strength was conducted. According to Fourier transform infrared spectroscopy (FT-IR) of the study, the presence of the two additives in base jatropha oil demonstrated good functional groups desired for lubricant lubricity. In comparison to base jatropha under 40 kg and 1200 rpm, blended 1 wt-% PTFE + 0.8 wt-% SDBS additives produced an outstanding reduction in coefficient of friction (61.4%) and good load carrying strength among all the samples tested, but commercial shell oil (CSO) outperformed under wear resisting potential. Scanning electron microscopy (SEM) and a 3D surface profilometer were used to examine the rubbed surfaces. Findings indicate that the boundary film on the worn surface was made up of PTFE and SDBS nanoparticles that deposited film elements of sulphur and higher carbon content. The decrease in the percentage of iron (Fe) indicates that tribo-pairs were separated from direct contact under additives usage. According to the research, adding an anti-wear substance to the new formulation could increase wear protection, thus effectively making it comparable with CSO counterpart.

Assessment of tribocorrosion properties of friction extruded wires fabricated from recycled magnesium alloy chips

This work examines the tribological characteristics and microstructural alterations of an alloy of recycled wire exposed to friction extrusion (FE). According to microstructural examination, the FE method causes dynamic recrystallization, which produces fine grains and fractured precipitates. Initial contact with the tool triggers the friction extrusion mechanism, which causes homogenous deformation and strain-induced recrystallization. In contrast to the base metal's 100 µm grain size, the recycled wire's grain size lowered to 18 µm. The FE recycled wire has a higher hardness than the base alloy, according to the Hall-Petch relationship. Wet sliding tribological tests show reduced friction coefficients as a result of lubrication; the FE recycled wire shows more resilience to wear and tribocorrosion. In contrast, FE-recycled wire exhibits plastic deformation and increased tribocorrosion resistance. Dry and wet average friction coefficients varied between 0.2 and 0.14, less than those of the base metal, 0.3 and 0.25. Surface inspection of worn samples reveals considerable deformation, delamination, and severe material loss in the base alloy. The recycled wire reflects 20 µm, as opposed to the base metal, 80 µm, indicating that this tendency continues to the wear track depths.

Polystyrene microcapsules containing linseed oil and SiC nanoparticles as a lubricant additive for boosting the self-healing and self-lubricating efficiency of epoxy coatings

Friction coefficients and specific wear rates of a multifunctional smart nanocomposite epoxy coating with embedded linseed oil-filled microcapsules and SiC nanoparticles were determined using six coatings synthesized with 15 wt% microcapsules and 1, 2, 3, and 4 wt% of SiC nanoparticles. In rotational pin-on-disk testing, all samples containing microcapsules and SiC nanoparticles exhibited reduced friction coefficients. The sample containing 3 wt% SiC nanoparticles showed the highest decrease in coefficient of friction by 31.79% and a specific wear rate by 59.04% compared with the neat epoxy sample. The results are discussed concerning lubricating rollers, polishing operations of SiC nanoparticles, a solid/liquid lubricant film, and electron microscopy (FESEM/EDX) studies.

Enhancing PEO coating on TC6 alloy through in-situ synthesis of MoSe2—Towards more efficient wear-reducing lubrication and wear resistance

Plasma electrolytic oxidation (PEO) has demonstrated significant enhancements in the mechanical properties and corrosion resistance of titanium alloys. Despite these advantages, the presence of micropores and microcracks in the coating can still detrimentally impact tribological properties. This paper introduces a novel approach involving the in-situ growth of a surface structure. The resulting interface structure exhibits outstanding tribological properties under a load of 3 N and a speed of 1.5 cm/s. In contrast to prior studies, improvements are made to the electrical parameters and electrolyte formula of Plasma electrolytic oxidation, facilitating the in-situ growth of MoSe2. This results in the formation of a lubricating layer and a robust TiO2 ceramic coating with excellent adhesion. A systematic analysis of friction, wear characteristics, reveals that MoSe2 in situ grow on the surface of the PEO coating, within micropores, microcracks, and crater structures after hydrothermal treatment. This process significantly enhances the microporous structure of the coating, with the MoSe2 film forming a dense and uniform interlocking layer with the PEO lower layer. Dry friction test experiments demonstrate a 33.7% reduction in friction coefficient and a 29% decrease in wear rate compared to the PEO sample, indicating the synergistic effect between the MoSe2 film and the PEO coating.

Fretting wear characteristics of Ti6Al4V/TiC nano composites using response surface method

This study explores the impact of titanium carbide (TiC) nanoparticles on the microstructure and fretting wear performance of Ti64-GV alloys. The Ti64 alloys, featuring varying TiC concentrations, were fabricated through spark plasma sintering (SPS) process. Fretting experiments followed a face-centered central composite design methodology, employing a second-order quadratic regression model to analyze wear volume loss and coefficient of friction (CoF). The findings revealed a notable reduction in wear volume loss and friction coefficient with increasing TiC content. The presence of TiC significantly enhanced the wear resistance of Nano-composites due to heightened hardness and oxidation wear resistance. Employing hybrid desirability-based response surface methodology (RSM) led to substantial improvements in wear characteristics (37% in CoF and 46% in wear volume loss). Microstructural analysis affirmed enhanced surface quality and textures using the RSM hybrid approach for predicting optimal process parameters.

Series Solutions of Three-Dimensional Magnetohydrodynamic Hybrid Nanofluid Flow and Heat Transfer

Hybrid nanofluids have many real-world applications. Research has shown that mixed nanofluids facilitate heat transfer better than nanofluids with one type of nanoparticle. New applications for this type of material include microfluidics, dynamic sealing, and heat dissipation. In this study, we began by placing copper into H2O to prepare a Cu-H2O nanofluid. Next, Cu-H2O was combined with Al2O3 to create a Cu-Al2O3-H2O hybrid nanofluid. In this article, we present an analytical study of the estimated flows and heat transfer of incompressible three-dimensional magnetohydrodynamic hybrid nanofluids in the boundary layer. The application of similarity transformations converts the interconnected governing partial differential equations of the problem into a set of ordinary differential equations. Utilizing the homotopy analysis method (HAM), a uniformly effective series solution was obtained for the entire spatial region of 0 < η < ∞. The errors in the HAM calculation are smaller than 1 × 10−9 when compared to the results from the references. The volume fractions of the hybrid nanofluid and magnetic fields have significant impacts on the velocity and temperature profiles. The appearance of magnetic fields can alter the properties of hybrid nanofluids, thereby altering the local reduced friction coefficient and Nusselt numbers. As the volume fractions of nanoparticles increase, the effective viscosity of the hybrid nanofluid typically increases, resulting in an increase in the local skin friction coefficient. The increased interaction between the nanoparticles in the hybrid nanofluid leads to a decrease in the Nusselt number distribution.

Synergistic effects of Cr addition on surface characteristics and its implications on wear and in vitro biocompatibility of TiMoNbTaW alloys

Refractory metal based high entropy alloys (RHEAs) presents promising anti-wear and cytocompatibility to meet the articulating demands in artificial hip/knee prosthesis. In this study, TiMoNbTaW RHEAs were fabricated through arc melting, and modified with Cr to enhance their bulk, and surface characteristics. The Cr addition resulted in a gradual increase in bulk hardness from ⁓4.9 GPa to ⁓7.1 GPa, and yield strength from ⁓1.3 GPa to ⁓1.9 GPa, attributed to lattice distortion induced misfit strain. X-ray photoelectron spectroscopy (XPS) confirmed the formation of a native passive film on alloys surface, consisting of oxides TiO2, MoO2, MoO3, WO3, Nb2O5, Cr2O3 and Ta2O5. The wear resistance improved in accordance with Archard's law, while friction responses were influenced by Cr2O3 content. Higher Cr2O3 content imparted lubricating effect, reducing friction coefficient ⁓0.18–0.23, and wear rate in the order 10−5 mm3/Nm. Moreover, higher Cr2O3 in the native film contributed to the excellent cytocompatibility against MC3T3-E1 cells. Cell proliferation increased with increase in Cr content in the RHEA and showed higher alkaline phosphatase activity (ALP) activity when Cr content was 10% or more. This study evaluates the effect of Cr increment on the microstructural and mechanical properties in TiMoNbTaW RHEAs, and highlights the synergistic effects of the passivation-mediated native film, influencing tribological, and in-vitro cellular response.

Effect of 2D Cu-MOFs modified carbon spheres nanoparticles as an environmentally friendly lubricating additive on tribological properties

As a nanoscale carbon material, carbon spheres (CS) are expected to achieve ideal lubrication performance by reducing direct contact between friction pairs and bearing loads. In this work, 2D Cu-MOFs surface modified (CS@Cu(BDC)) CS was added to the base oil, which exhibited a remarkable reduction in friction coefficient and wear rate (62.2%, 33.9%), the width of the friction pair wear marks was decreased by 30.8% relative to the base oil. The improvement in performance can be attributed to the polishing, repairing, filling and tribo-film forming effects of CS@Cu(BDC). This work provided an effective strategy for diversifying the surface structure of CS and opened new avenues for the development of a new generation of green and efficient lubricant additives.

Investigating Friction and Antiwear Characteristics of Organic and Synthetic Oils Using h-BN Nanoparticle Additives: A Tribological Study

Friction and wear are two major elements that influence the life of a variety of equipment. According to estimates, as much as 30% of the energy used is dissipated as friction. However, this figure can be reduced by developing materials that enhance surfaces and apply lubricants appropriately. This study aims to analyze the impact of hexagonal boron nitride (h-BN) nanoparticles on the rheological and antiwear characteristics of four distinct oil varieties, namely Society of Automotive Engineers SAE-20W50, soybean, Polyalphaolefin PAO-4, and olive oils. The results of the tribological tests demonstrated a noteworthy enhancement in antiwear characteristics with the addition of 0.2 wt.% of h-BN nanolubricant. Among all nanolubricants, the maximum reduction in coefficient of friction (COF) and wear scar diameter was observed at 0.2 wt.% of h-BN in SAE-20W50 oil. Compared to the base oils, the wear scar diameter decreased by 17.93%, 8.80%, 22.65%, and 24.04% for (soybean oil and 0.2 wt.% of h-BN), (SAE20W50 and 0.2 wt.% of h-BN), (PAO4 and 0.2 wt.% of h-BN), and (olive oil and 0.2 wt.% of h-BN), respectively. Rheological test results indicated that with the addition of h-BN nanoparticles, the viscosity of the base oils significantly increased. The maximum viscosity was observed at 40 °C for SAE20W50 base nanolubricants, according to the rheological measurements.

Tribological properties of two-dimensional nanochains in water controlled by a magnetic field with various alignment directions

Nanoparticles are extensively utilized as effective lubrication additives. In a novel approach, one-dimensional nanoparticles undergo self-assembly, transforming into two-dimensional nanochains for use as additives, thereby enabling varied lubrication effects. We involved synthesizing Fe3O4 nanoparticles via a solvothermal method, followed by their self-assembly into magnetic Fe3O4@SiO2 nanochains under a magnetic field. These NCs, measuring 57.8 µm in length and 0.2 µm in diameter, were dispersed in deionized water. This study explored the influence of various orientations on the tribological properties of the lubricant through the manipulation of nanochains’ alignment using a magnetic field. The results indicate a 48.51% reduction in coefficient of friction and a 73.56% decrease in wear rate when the NCs were aligned perpendicular to the direction of friction.

Study on the friction drilling behaviors and tribological properties of aluminum matrix composites

This study investigates Al 6063 matrix composites reinforced with different weight percentages of B4C (5%, 10%, 15%, and 20%) produced through powder metallurgy and hot extrusion. The resulting specimens were subjected to a comprehensive investigation to elucidate the effect of B4C reinforcement on the density, tensile strength, transverse rupture strength (TRS), hardness, tribological characteristics, and friction drilling behavior. The pin-on-disk wear tests were conducted in a dry environment, while the friction drilling experiments were performed under constant spindle speed and feed rate conditions, both in dry and minimum quantity lubrication (MQL) environments. The findings revealed a uniform B4C particle dispersion and strong interface bonding in the matrix and that the hardness, tensile strength, TRS, and wear resistance of the specimens increased as the weight fraction of the reinforcement increased. The 15 wt% and 20 wt% B4C composites showed the highest wear resistance, improving by 62.78% compared to Al6063. Higher B4C content reduced specific wear rates and reduced friction coefficients. Among the specimens under investigation, the Al6063 composite reinforced with 15 wt% B4C indicated the highest tensile, transverse rupture, whereas the Al6063 composite with 10 wt% B4C exhibited the best thread-pull-out strength (TPS). The friction-drilled 10 wt% B4C composites showed the highest thread-pull-out strength reaching 373.44 N/mm² in MQL and 329.74 N/mm² in dry conditions.

Effects of hexagonal boron nitride content on forming quality and performance of laser powder bed fusion manufactured nickel-based hastelloy X composites

Regulating the composition of nickel-based composites, especially those containing crack-sensitive Hastelloy X (HX) matrix, significantly influences the forming quality and performance of parts manufactured using laser powder bed fusion (LPBF). Ray tracing and temperature field simulations were conducted to analyze the non-equilibrium solidification mechanism of the laser processed hexagonal boron nitride (h-BN)-HX system, resulting in an optimized h-BN content range. The optimized composition, with 0.2 wt% h-BN in HX, showcased the best forming quality and performance. It displayed negligible cracks or unmelted particles, minimal surface roughness of 9.29 μm, and superior tensile properties with a tensile strength of 1246.49 MPa and an elongation of 18.67 %. Furthermore, the samples showcased increased hardness (371.21 HV5) and reduced friction coefficient (0.54). Interestingly, with a further increase in h-BN content, a gradual improvement in strength and hardness was observed, accompanied by a reduction in the friction coefficient. Nevertheless, the ductility of the samples noticeably decreased. The 1 wt% h-BN/HX sample exhibited a tensile strength of 1503.14 MPa, hardness of 502.13 HV5, and friction coefficient of 0.48 while displaying an elongation of only 3.76 %. These findings emphasize the significance of optimizing the composition of Ni-based composites to enhance the forming quality and performance of parts manufactured through LPBF, particularly in aerospace and engineering applications.

Reducing friction between metal and thermo-mechanical pulp using alkyl ketene dimers and magnesium stearate

The friction between natural fibers and metal affects tool life, wear and tear and surface defects of extrudates. The ability of alkyl ketene dimer (AKD) and magnesium stearate (MgSt) to reduce coefficient of friction (COF) between thermomechanical pulp (TMP) and metal were determined at temperatures of 30, 100, and 180 °C and additive concentrations from 0.5 to 5 wt%. The AKD and MgSt were added to TMP sheets through spraying, followed by drying. ATR-FTIR and IR microscopy confirmed the presence of AKD and MgSt on the TMP. AKD addition at 2 wt%, consistently reduced the COF of TMP and metal, whereas MgSt reduced COF at 100 and 180 °C, only. No further reduction in COF was observed at 5 wt% of AKD or MgSt.

A novel 2D/2D MoS2/CeO2 nanohybrid and its lubricating mechanism in green rapeseed oil

The incomplete stacking of two distinct types of two-dimensional (2D) layered materials to form a 2D/2D nanohybrid, accompanied by the generation of ultra-low friction at the interface, offers a novel solution for designing lubricants with superior tribological performance. This work utilized a facile and gentle method to synthesize MoS2 and CeO2 nanosheets with varying sizes, which were then stacked to form 2D/2D nanohybrid. This nanohybrid was employed as dispersant additives in eco-friendly lubricant to effectively reduce friction. The tribological testing results revealed that this nanohybrid exhibited remarkable reductions in the average coefficient of friction (COF) and wear rate of rapeseed oil, compared to single MoS2 or CeO2. At a 1.5 wt% addition of MoS2/CeO2, the average COF and wear rate decreased to the lowest value, respectively. Moreover, the frictional behaviors of the rapeseed oil containing MoS2/CeO2 nanohybrid under various sliding conditions were explored as well. By analyzing the microstructure and composition of the counterparts’ surfaces, a lubrication mechanism for 2D/2D nanohybrid of MoS2/CeO2 was proposed. This research might promote the application of MoS2/CeO2 nanohybrid as additive for ecologically friendly lubricants.

Crystal orientation control of HFCVD diamond spherical film tools and tribological behavior on steel

(111)-oriented micron-crystalline diamond (111MCD), (110)-oriented micron-crystalline diamond (110MCD) and (110)-oriented nano-crystalline diamond (110NCD) spherical films were prepared on the surface of spherical WC-Co polishing tools by hot filament chemical vapor deposition technology. The microstructure, molecular structure, crystal orientation and surface roughness of spherical films were characterized by SEM, XRD, EBSD and White-light interferometer. The friction performance and material removal mechanisms were studied by friction experiments on steel. The results showed that both crystal orientation and grain size variation significantly influenced the tool properties. The roughness and friction coefficient of 111MCD, 110MCD, and 110NCD films decreased successively. During the friction process, the transformation of diamond to graphite reduced the friction coefficient but accelerated film delamination. 111MCD has the fastest material removal rate, but the graphitization rate and wear rate of the film are the highest, and there are a lot of abrasive chips in the friction interface. Diamond of (110) orientation can improve the wear resistance of the film and reduce the abrasive wear of the workpiece. Compared to 111MCD, 110NCD exhibited a 29.3 % reduction in friction coefficient, a 90 % improvement in wear resistance, a 49.4 % increase in surface smoothness of the processed workpiece, and the highest ID/IG value of 1.45 after film wear, demonstrating superior polishing performance and anti-graphitization properties. These results indicate that 110NCD tool is a highly efficient polishing tool with great potential.

Tribological and residential air conditioning performance using SiO2-TiO2/PVE nanolubricant

Applying nanoparticles as an additive may increase the lubrication performance of the oil. The present paper evaluates the tribological performance of SiO2-TiO2 nanoparticles in PVE lubricant and its effect on the system's performance in residential air conditioning (RAC). The hybrid nanolubricants with a concentration from 0.003 to 0.01% at a 50:50 ratio were tested using the four-ball tribological method and then applied in a customised RAC test rig. The friction coefficient and wear scar diameter were evaluated to synthesise nanolubricant anti-wear effect on a paired surface. The coefficient of performance (COP), cooling capacity, power consumption, and energy efficiency ratio (EER) were analysed to understand the influence of SiO2-TiO2/PVE nanolubricant in the RAC system. About 25% reduction in frictional coefficient was discovered when the nanoparticles were added into lubricant with a concentration of 0.005%. Applying nanolubricant in the RAC system can reduce compressor work and power consumption, increase the refrigerant flow rate and cooling capacity, and increase the COP and EER. Maximum enhancement of 39.2% and 52.7% for COP and EER were found for nanolubricant at concentrations of 0.005%. The 0.005% concentration is the nanoparticle's concentration threshold for SiO2-TiO2/PVE, as the higher concentration may lead to the performance of a pure lubricant.

A Tribological Analysis of PAO-Based Hybrid SiO2-TiO2 Nanolubricants

Friction and wear are caused by contact between sliding surfaces over time. It is possible to reduce friction in a compressor by improving its lubrication. The nanoparticle lubrication will aid in reducing wear and friction of the piston mechanism of the compressor. This work aims to analyse the tribology properties of performance of the system employing Polyalphaolefin (PAO)-based hybrid nanolubricants. A two-step method was used to disperse SiO2 and TiO2 nanoparticles in the PAO lubricant at volume concentrations of 0.01% and 0.05% using a two-step method. Then, hybrid nanolubricants are observed visually, and their coefficient of friction (COF) is evaluated using a four-ball tribometer. The SiO2-TiO2/PAO hybrid nanolubricants were found to have a higher than 80% sedimentation ratio up to 180 hours and to be visually stable for up to 30 days. The 0.01% SiO2-TiO2/PAO has a lower COF than the base PAO 68 oil. The 0.05%, however, does not show the expected reduction. The COF ratio for volume concentrations of 0.01% and 0.05% is 0.97 and 1.01, respectively. The highest COF reduction of nanolubricants was attained up to 2.53% at 0.01% volume concentration. Therefore, 0.01% SiO2-TiO2/PAO is the ideal condition for use and is recommended for further investigations.