...Kai Chen; Shuaishuai Zeng; Xiaoyue Yang; Yi Liu Purpose Ultrasonic motors (USMs) often experience significant wear and temperature rise of the friction materials. This study aims to present a solution involving direction-dependent textures on the stator surface to improve mechanical performance...

... structural strength at elevated temperatures. Tribological test results revealed that SG-Hydroxyl-terminated polydimethylsiloxane (OH-PDMS) exhibited the best friction-reducing performance, while SG-PDMS exhibited the best antiwear performance. In contrast, SG-Phenylmethyl silicone oil exhibited the poorest...

... Limited Licensed re-use rights only Electromobility Friction Wear Thickeners Electrical conductivity The momentum toward electric vehicles (EVs) is primarily motivated by the need to mitigate climate change and improve urban air quality, which led to the intensive progress in EVs over...

... lubrication theory was developed. Multivariate operational parameters (compression ratio, −55°C–135 °C temperature, 0.1–0.5 m/s speed, 0.4–6.3 µm roughness) and geometric features (oil-trapping grooves) were systematically analyzed to evaluate micro-contact pressure, oil film thickness, friction and leakage...

.../FeOCl/G increased by 11%, while the average friction coefficient and wear rate decreased by 52.3% and 73.9%, respectively. Computational simulations revealed that FeOCl loading improved the interfacial bonding between the matrix and PTFE . Originality/value This study is expected to promote...

... tensile strength enhances the mechanical characteristics of the CFC/LCP-PEG composites. Findings The results demonstrate that CFC/LCP-PEG composites significantly surpass the original CFC, achieving a substantial reduction in friction coefficient, improved wear morphology and extraordinary...

...Chenchen Shi; Tao Bai; Xianhua Cheng Purpose This study aims to explore the relationship between microstructure and wear resistance of 3Cr3Mo2MnV steel under different heat treatment conditions. Design/methodology/approach Dry sliding friction experiments were carried out on 3Cr3Mo2MnV steel...

...Lingrui Cai; Ziyi Li; Sang Xiong Purpose Surface modification of MoS₂ was carried out to improve its tribological properties. This paper aims to reveal that by precisely controlling the modifier type and addition amount, a significant reduction in the friction coefficient and enhanced...

... than that of the initial structure under the same working conditions due to friction formed between the foils, which may lead to performance decrease. Originality/value This paper proposes a new flexible arch structure that can reduce stress concentration. Peer review The peer review history...

... (LSR) was used to manufacture various textured patterns (i.e. line, grid and mixed) on both the original and heat-treated 70Mn steel plates. The micro-hardness, microstructure, tensile strength, yield strength, elongation, coefficients of friction (COF) and worn morphologies were characterized...

... glycol 200 (PEG200), yielding an oil-impregnated PPTFE/PVA/PEG200 composite. Findings It was found that the oil-impregnated PPTFE/PVA/PEG200 composite exhibited advanced tribological properties than neat PTFE with reductions of 53% and 70% in coefficient of friction and wear rate, respectively...

...-impregnated and pore-connected PPTFE. Findings This study found that oil-impregnated and surface-textured PPTFE exhibited excellent tribological performances with an 82% reduction in coefficient of friction and a 72.5% lowering in wear rate comparing to PPTFE. Originality/value This study shows...

... nanoparticle concentration that enhances lubricant efficiency by reducing friction and wear. Design/methodology/approach The research involved preparing nanolubricants with four different concentrations of Al₂O₃ nanoparticles: 0.05, 0.1, 0.25 and 0.5 wt.%. Tribological performance...

...Yunhai Liu; Penghui Xu; Xiaohua Zhu; Ligao Liu; Bo Li; Qingquan Li Purpose Two friction models of Fe-Fe and Diamond-like carbon (DLC)-Fe were established by molecular dynamics (MD) method to simulate the friction behavior of traditional fracturing pump plunger and new DLC plunger from atomic scale...

..., analytical pure. The DS oil with a kinematic viscosity of 100 MPa⋅s at 25°C was obtained from Tianjin De'en Chemical Reagent Co., Ltd., China. Polytetrafluoroethylene Friction Citric acid Porosity Oil-impregnated material Polytetrafluoroethylene (PTFE) is characterized by high...

... as oil lubrication within the threshold range added a better antiwear and friction reduction effect. Ionic liquids additives Silver complexes Friction Synergistic effect High-temperature Lubricant additives are widely used in hydraulics, gear and other industrial oils...

... specifically investigates the mechanical and wear properties of 304 stainless steel after the direct action of LP on its surface, which shows an effective improvement on the wear resistance. For example, the wear loss of processed sample is reduced by 19% at 30 N, the friction coefficient decreases from 0.4714...

... analysis. The friction test is carried out by the relative movement of the copper ball and the aluminum disk on the friction tester. Findings Results showed that the friction coefficient of MAO samples was reduced by 80% after treated with GO–PVA composite film. Originality/value This research has...

... mixtures of NLGI 2 lithium stearate grease. Four-ball wear tests were used to evaluate the tribological properties of different grease mixtures such as coefficient of friction and wear. ASTM 2266 as reported by earlier studies is useful, but it is not representative of real-life applications where variable...

...Shoufan Cao; Zhang Xu; Yi Liang; Stefano Mischler Purpose The aim of this study is to experimentally analyze the friction and wear responses of different steels to different surface films generated in oil-lubricated tribological contacts. Design/methodology/approach Tribological experiments...