Showing papers in "Tribology Transactions in 2020"
TL;DR: In this article, the frictional performance of different bearing grease formulations in full rolling bearings and a ball-on-disc rig was evaluated, and the results showed that the ball on disc test performed better than the full rolling bearing test.
Abstract: This article evaluates the frictional performance of different bearing grease formulations in full rolling bearings and a ball-on-disc rig and subsequently assesses whether the ball-on-disc test re...
24 citations
TL;DR: In this paper, the effect on the tribological behavior of paraffin grease incorporated with ZnO and CuO nanoparticles was investigated, and the results showed that the effect of these nanoparticles on the behavior of the grease was negligible.
Abstract: The present study investigates the effect on the tribological behavior of paraffin grease incorporated with ZnO and CuO nanoparticles. ZnO nanoparticles of ∼32 nm were synthesized with a pr...
23 citations
TL;DR: Commercially prepared spherical zirconia (ZrO2) nanoparticles with an average particle diameter of 5 nm and functionalized with a hydrocarbon ligand were dispersed in a polyalphaolefin (PAO) as discussed by the authors.
Abstract: Commercially prepared spherical zirconia (ZrO2) nanoparticles with an average particle diameter of 5 nm and functionalized with a hydrocarbon ligand were dispersed in a polyalphaolefin (PAO...
20 citations
TL;DR: In this paper, a tribological evaluation of the influence of graphite and bronze fillers in two commercial composites in a dry sliding pin-on-disc test at the same contact severity (PVa parametrization) is presented.
Abstract: This work presents a tribological evaluation of the influence of graphite and bronze fillers in two commercial composites in a dry sliding pin-on-disc test at the same contact severity (PVa paramet...
19 citations
TL;DR: In this article, a transient mixed lubrication model that considers mass-conserving cavitation and deterministic asperity contacts is established to study the evolution of the tribological be...
Abstract: In this study, a transient mixed lubrication model that considers mass-conserving cavitation and deterministic asperity contacts is established to study the evolution of the tribological be...
18 citations
TL;DR: In this article, the performance of three ionic liquids (ILs), trihexyl(tetradecyl)phosphonium bis(2,4,4-trimethylpentyl) and 1-butyl-3, was investigated.
Abstract: This study investigates the performance of three ionic liquids (ILs), trihexyl(tetradecyl)phosphonium bis(2,4,4-trimethylpentyl)phosphinate, trihexyl(tetradecyl)phosphonium decanoate, and 1-butyl-3...
17 citations
TL;DR: In this paper, a powder metallurgy spark plasma sintering (SPS) technique was used to synthesize and consolidate the MAX phase composites of Ti3SiC2-TiCx and TiCx + TiC.
Abstract: MAX phase composites Ti3SiC2–TiCx and Ti3SiC2–(TiCx + TiC) were synthesized and consolidated via a powder metallurgy spark plasma sintering (SPS) technique. The bulk compositions and micros...
17 citations
TL;DR: In this paper, the effects of polytetrafluoroethylene (PTFE) thickness on the wear and friction properties of spin-coated PTFE and polydopamine (PDA)/pTFE coatings on stainless steel substrate were investigated.
Abstract: In this study, the effects of polytetrafluoroethylene (PTFE) thickness on the wear and friction properties of spin-coated PTFE and polydopamine (PDA)/PTFE coatings on stainless steel (SS) substrate...
17 citations
TL;DR: In this paper, the sliding friction and wear behavior and related emissions of airborne particulate matter of Cu-free barite containing friction materials for vehicular brake applications were investigated and analyzed.
Abstract: The present work aims to investigate the sliding friction and wear behavior and related emissions of airborne particulate matter of Cu-free barite containing friction materials for vehicular brake ...
17 citations
TL;DR: In this article, numerical models for barrel-shaped rings with four textures were established using MATLAB and corresponding specimens were fabricated by laser surface texturing, and the performance was compared with the performance of the corresponding specimens.
Abstract: Numerical models for barrel-shaped rings with four textures were established using MATLAB and the corresponding specimens were fabricated by laser surface texturing. The performance was compared bo...
17 citations
TL;DR: In this article, a numerical analysis of elastohydrodynamic lubrication with grease in point contacts is presented to predict the grease film thickness at low speeds, which can increase with decreasi...
Abstract: This article presents a numerical analysis of elastohydrodynamic lubrication (EHL) with grease in point contacts to predict the grease film thickness at low speeds, which can increase with decreasi...
TL;DR: In this paper, particle-reinforced laser cladding coatings with different contents of Y2O3 were prepared on a hot forging die steel substrate and the microstructure and wear behaviors w.r.t.
Abstract: (Ti,Mo)B2-(Ti,Mo)C-(Fe,Cr)7C3 particle-reinforced laser cladding coatings with different contents of Y2O3 were prepared on a hot forging die steel substrate. The microstructure and wear behaviors w...
TL;DR: In this article, a cobalt-nickel/tungsten disulfide (Co-Ni/WS2) composi cation was proposed for high performance coatings with self-lubrication, superior wear, and corrosion resistance.
Abstract: High-performance coatings with self-lubrication, superior wear, and corrosion resistance are sought after in modern industry. Here we reported a cobalt–nickel/tungsten disulfide (Co-Ni/WS2) composi...
TL;DR: In this article, both the mechanical properties and friction characterization of graphene-silicon rubber composites were investigated systemically, and they were prepared by means of solvable solvents.
Abstract: Both the mechanical properties and friction characterization of graphene–silicone rubber composites were investigated systemically. Graphene–silicone rubber composites were prepared by means of sol...
TL;DR: In this article, high-chromium cast iron with high nitrogen content (HNHCCI) was prepared using a vacuum induction barotropic furnace, and the erosion-wear behaviors of HNHCCIs were investigated with a rotary erosio...
Abstract: High-chromium cast iron with high nitrogen content (HNHCCI) was prepared using a vacuum induction barotropic furnace, and the erosion–wear behaviors of HNHCCI were investigated with a rotary erosio...
TL;DR: In this article, an important portion of transmission load-independent power losses, especially in high-speed condition and dip-lubricated gearboxes with high immersion depth, are discussed.
Abstract: Churning power losses are an important portion of transmission load-independent power losses, especially in high-speed condition and dip-lubricated gearboxes with high immersion depth. Generally, i...
TL;DR: In this paper, a special rail corrugation phenomenon occurring at a braking section of Shenzhen Metro Line 3 based on friction-excited oscillation was studied, which is strongly re...
Abstract: This article studies a special rail corrugation phenomenon occurring at a braking section of Shenzhen Metro Line 3 based on friction-excited oscillation. The rail corrugation is strongly re...
TL;DR: In this article, the authors investigated the effect of laser texturing on the abrasion resistance of a surface modified by laser textured surfaces under full oil lubrication and full oil lube.
Abstract: This article aims to investigate tribological properties of a surface modified by laser texturing under full oil lubrication as well as the effect of laser texturing on the abrasion resistance prop...
TL;DR: In this paper, a rough surface thermal elastohydrodynamic lubrication (TEHL) model tailored for the simulation of high-speed and high-temperature contacts of relatively smooth surfaces is introduced.
Abstract: In this study, a rough surface thermal elastohydrodynamic lubrication (TEHL) model tailored for the simulation of high-speed and high-temperature contacts of relatively smooth surfaces is introduce...
TL;DR: In this article, the experimental analyses of a rigid (short) and a flexible (long) rotor subject to thermal unbalance effects are presented. The rotors are supported by a ball bearing and by a cylindri...
Abstract: The present work presents the experimental analyses of a rigid (short) and a flexible (long) rotor subject to thermal unbalance effects. The rotors are supported by a ball bearing and by a cylindri...
TL;DR: In this paper, the effects of intermetallic and secondary phases on the sliding wear behavior of super duplex stainless steel 2507 against bearing steel torsion was quantified.
Abstract: The purpose of this investigation was to quantify the effects of intermetallic and secondary phases on the sliding wear behavior of super duplex stainless steel 2507 against bearing steel t...
TL;DR: Recently, concentrated polymer brushes (CPBs) have attracted much attention as potential tribomaterials showing an ultralow friction coefficient (e.g., 10−4 in a microtribological analysis).
Abstract: Recently, concentrated polymer brushes (CPBs) have attracted much attention as potential tribomaterials showing an ultralow friction coefficient (e.g., 10−4 in a microtribological analysis)...
TL;DR: In this paper, expanded graphite (EG) was used as a lubricant for fiber brushes with unbent fibers and bent fibers with different packing fractions to obtain better compression properties.
Abstract: Fiber brushes with expanded graphite (EG) as a lubricant were successfully prepared. Compression properties of brushes filled with unbent fibers and bent fibers with different packing fractions wer...
TL;DR: In this paper, as-cast white cast iron specimens with chromium concentrations of 0, 2, and 4% were prepared by melting and casting. Scanning electron microscopy and X-ray diffractometry results indicate that t...
Abstract: As-cast white cast iron specimens with chromium concentrations of 0, 2, and 4 wt% were prepared by melting and casting. Scanning electron microscopy and X-ray diffractometry results indicate that t...
TL;DR: In this article, an abnormal phenomenal of rail corrugation was found in the transition and circular curve interval of the mountain city metro, in which the rail Corrugation on the outer rail was more serious and ea
Abstract: An abnormal phenomenal of rail corrugation was found in the transition and circular curve interval of the mountain city metro, in which the rail corrugation on the outer rail is more serious and ea
TL;DR: In this paper, a nonlinear finite element method was used to analyze the frictional contacts in gas foil bearing performance, which is the main factor that affects bearing performance and is highly nonlinear.
Abstract: In gas foil bearings, frictional contacts are one of the main factors that affect bearing performance, which is highly nonlinear. Using a finite element method, this article presents a nonlinear mo...
TL;DR: In this article, the tribological behavior of B4C ceramics without and with a postannealing treatment at different temperatures was investigated, and the results showed that the tribology behavior of the B4c was similar to that of B3C.
Abstract: B4C ceramics were fabricated by pressureless sintering, and the tribological behaviors of B4C ceramics without and with a postannealing treatment at different temperatures were investigated. It was...
TL;DR: Magnetron-sputtered physical vapor deposited (PVD) thin-film TiB2 coatings were investigated as a wear-resistant cam tappet coating that runs under the boundary lubrication regime in internal combu
Abstract: Magnetron-sputtered physical vapor deposited (PVD) thin-film TiB2 coatings were investigated as a wear-resistant cam tappet coating that runs under the boundary lubrication regime in internal combu
TL;DR: In this paper, a recent interest on emergency shoe braking in high speed trains stimulated the research on the damage due to sliding contact between brake blocks and wheel tread, with rolling/slidi...
Abstract: A recent interest on emergency shoe braking in high speed trains stimulated the research on the damage due to sliding contact between brake blocks and wheel tread. Bi-disc tests, with rolling/slidi...
TL;DR: In this paper, a micro-macro contact analysis was employed to analyze the contact parameters of a roller linear motion guide (RLMG) in mixed elastohydrodynamic lubrication.
Abstract: In order to study the frictional behavior of a roller linear motion guide (RLMG) in mixed elastohydrodynamic lubrication (EHL), a micro–macro contact analysis is employed to analyze the contact par...