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Composite dimensional structure superhydrophilic-underwater superoleophobic material for efficient separation of oil-in-water emulsions SCIE
期刊论文 | 2025 , 362 | SEPARATION AND PURIFICATION TECHNOLOGY
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Abstract :

Superhydrophilic-underwater superoleophobic materials have received extensive attention in recent years due to their excellent performance in oil-water separation. However, they are still challenged by practical limitations. One of the main issues is the modification of traditional metal-based surfaces. These surfaces are typically modified through roughening and chemical treatment, but they still face significant challenges. Here, we report a metal rubber(MR) filtration material with exceptional superhydrophilic-underwater superoleophobic properties, fabricated through a synchronous process combining two-dimensional(2D) iron oxide sheets and zerodimensional(0D) silica nanospheres. This composite structure enhances surface wettability by integrating the dimensional effects of 2D and 0D components. This superwettable material, termed P-MRFS, incorporates a composite structure that enhances surface wettability by integrating the size effects of both 2D and 0D components. The P-MRFS material achieved a peak separation flux over 2500 L & sdot;m-2 & sdot;h-1 and up to 99.88% purity across various oil in water emulsions, including hexane, petroleum ether, dimethylbenzene, dichloroethane, and toluene, with a stable efficiency of 99.7% after 30 separation cycles. P-MRFS demonstrated durability under demanding conditions, maintaining over 99.5% separation efficiency after 48 hours in acidic, alkaline, and saline solutions and following 400 cm of abrasion under a 200 g load. Importantly, the study employed computational fluid dynamics(CFD) simulations to analyze the micro-scale mechanisms of emulsion separation, enabling realtime observation of droplet dynamics and revealing interactions within the multi-fiber structure that enhance separation efficiency. Overall, the P-MRFS material showed outstanding stability in corrosion and abrasion resistance, sustaining high emulsion separation performance even in complex environments. These findings suggest the material's high potential for future applications in oil-water separation, environmental protection, including crude oil recovery, and other industrial uses, underscoring its significant practical utility.

Keyword :

CFD simulation CFD simulation Emulsion separation Emulsion separation Microstructural dimension control Microstructural dimension control oleophobic oleophobic Super hydrophilic Super hydrophilic Surface composite dimension structure Surface composite dimension structure underwater super underwater super

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GB/T 7714 Pi, Peng , Ren, Zhiying , Pan, Ling et al. Composite dimensional structure superhydrophilic-underwater superoleophobic material for efficient separation of oil-in-water emulsions [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2025 , 362 .
MLA Pi, Peng et al. "Composite dimensional structure superhydrophilic-underwater superoleophobic material for efficient separation of oil-in-water emulsions" . | SEPARATION AND PURIFICATION TECHNOLOGY 362 (2025) .
APA Pi, Peng , Ren, Zhiying , Pan, Ling , Lin, Youxi , Yang, Yu , Li, Yuedan . Composite dimensional structure superhydrophilic-underwater superoleophobic material for efficient separation of oil-in-water emulsions . | SEPARATION AND PURIFICATION TECHNOLOGY , 2025 , 362 .
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Composite dimensional structure superhydrophilic-underwater superoleophobic material for efficient separation of oil-in-water emulsions EI
期刊论文 | 2025 , 362 | Separation and Purification Technology
Composite dimensional structure superhydrophilic-underwater superoleophobic material for efficient separation of oil-in-water emulsions Scopus
期刊论文 | 2025 , 362 | Separation and Purification Technology
Study on the sliding tribological behavior of ZIF-8 under lubricating grease conditions
期刊论文 | 2025 , 8 (1) | NANOTECHNOLOGY AND PRECISION ENGINEERING
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Abstract :

ZIF-8 is widely applied in lubrication, adsorption, and catalysis owing to its unique physicochemical properties. Previous experimental studies have demonstrated its feasibility as a lubricant additive. In the present work, the lubricating performance of ZIF-8 as an additive to lithium-based grease is quantitatively and dynamically analyzed at the atomic scale using molecular dynamics simulations. Friction wear experiments are also conducted to elucidate the lubrication mechanism of ZIF-8. The simulation and experimental results indicate that the incorporation of ZIF-8 effectively enhances the antifriction and antiwear characteristics of lithium grease. The most significant improvement in the lubrication performance of the grease is obtained at a mass fraction of 2.0 wt. % ZIF-8, which reduces the friction factor mu of the grease by about 17.0% and the wear by similar to 40.0%. Furthermore, the molecular dynamics simulations reveal that ZIF-8 primarily functions as a ball bearing under low-load conditions. However, under high-load conditions, ZIF-8 undergoes significant deformation and primarily acts as a filler. This explains the experimentally observed significant reduction in friction coefficient after the addition of ZIF-8. The results of this study provide a theoretical foundation for the development of new environmentally friendly grease additives.

Keyword :

Antifriction mechanism Antifriction mechanism Lithium-based grease Lithium-based grease Lubricant additive Lubricant additive Molecular dynamics Molecular dynamics Skeletal material Skeletal material ZIF-8 ZIF-8

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GB/T 7714 Pan, Ling , Li, Zhi , Wu, Yunli et al. Study on the sliding tribological behavior of ZIF-8 under lubricating grease conditions [J]. | NANOTECHNOLOGY AND PRECISION ENGINEERING , 2025 , 8 (1) .
MLA Pan, Ling et al. "Study on the sliding tribological behavior of ZIF-8 under lubricating grease conditions" . | NANOTECHNOLOGY AND PRECISION ENGINEERING 8 . 1 (2025) .
APA Pan, Ling , Li, Zhi , Wu, Yunli , Zheng, Kaikui , Han, Yuqing . Study on the sliding tribological behavior of ZIF-8 under lubricating grease conditions . | NANOTECHNOLOGY AND PRECISION ENGINEERING , 2025 , 8 (1) .
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Study on the sliding tribological behavior of ZIF-8 under lubricating grease conditions Scopus
期刊论文 | 2025 , 8 (1) | Nanotechnology and Precision Engineering
稠化剂组分对润滑脂摩擦性能的影响
期刊论文 | 2025 , 54 (5) , 83-92 | 表面技术
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Abstract :

目的 研究稠化剂组分中二元酸和硼酸对润滑脂在摩擦副表面润滑性能的影响.方法 分别建立具有正弦曲面凸峰的粗糙面边界润滑系统模型,以及光滑壁面的反应力场边界润滑系统模型,通过分子动力学模拟方法研究 12-羟基硬脂酸/壬二酸润滑脂体系(A润滑脂)、12-羟基硬脂酸/十二烷二酸润滑脂体系(B润滑脂)和12-羟基硬脂酸/壬二酸/硼酸润滑脂体系(C润滑脂)的承载能力、抗剪切能力、摩擦性能,并对C润滑脂进行成键和摩擦化学反应膜分析.结合润滑脂的微摩擦磨损试验,揭示二元酸链长和硼酸对润滑脂摩擦性能的影响.结果 在加压阶段,随着压力的增加,润滑脂密度增大,且分层现象越明显.当压力 Pz=50 MPa时,组分中含硼酸的C润滑脂在各处的密度均较小,表现出最佳的承载能力.在剪切过程中,C润滑脂始终将 2 个粗糙峰隔开,油膜不破裂,承载能力最高;含长链二元酸的B润滑脂和含硼酸的C润滑脂的最大应力相较于A润滑脂,分别降低了 27.1%、57.1%.同时,C润滑脂的摩擦因数相对稳定,在 0.075~0.095范围内波动,其均值为 0.090,相较于 B 润滑脂和 A 润滑脂,分别降低了 16.7%、22.2%,具有优良的力学性能.摩擦磨损结果表明,在稠化剂组分中添加硼酸后,润滑脂的理化性能得到显著提升,摩擦因数及均值分别为 0.085~0.095 和 0.091,模拟结果与试验结果一致.结论 相较于稠化剂中含短链二元酸的润滑脂,含长链二元酸的润滑脂表现出较好的抗剪切能力和摩擦性能.在稠化剂中添加硼酸后,稠化剂的结构得到强化,润滑脂表现出更为优异的抗磨减摩性能.这是因为在硼酸的作用下,润滑脂中的锂皂和硼酸基团不仅形成了配位键,而且能在固体壁面上形成摩擦反应膜,显著提高了润滑脂的物理化学性能.

Keyword :

分子动力学 分子动力学 摩擦反应膜 摩擦反应膜 摩擦性能 摩擦性能 润滑脂 润滑脂 稠化剂组分 稠化剂组分

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GB/T 7714 潘伶 , 吴允李 , 连金良 et al. 稠化剂组分对润滑脂摩擦性能的影响 [J]. | 表面技术 , 2025 , 54 (5) : 83-92 .
MLA 潘伶 et al. "稠化剂组分对润滑脂摩擦性能的影响" . | 表面技术 54 . 5 (2025) : 83-92 .
APA 潘伶 , 吴允李 , 连金良 , 郑开魁 , 郭锦阳 . 稠化剂组分对润滑脂摩擦性能的影响 . | 表面技术 , 2025 , 54 (5) , 83-92 .
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Effect of Ellipsoidal Particle Shape on Tribological Properties of Lubricants Containing Nanoparticles Scopus
期刊论文 | 2024 , 37 (1) | Chinese Journal of Mechanical Engineering (English Edition)
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Abstract :

Adding nanoparticles can significantly improve the tribological properties of lubricants. However, there is a lack of understanding regarding the influence of nanoparticle shape on lubrication performance. In this work, the influence of diamond nanoparticles (DNPs) on the tribological properties of lubricants is investigated through friction experiments. Additionally, the friction characteristics of lubricants regarding ellipsoidal particle shape are investigated using molecular dynamics (MD) simulations. The results show that DNPs can drastically lower the lubricant's friction coefficient μ from 0.21 to 0.117. The shearing process reveals that as the aspect ratio (α) of the nanoparticles approaches 1.0, the friction performance improves, and wear on the wall diminishes. At the same time, the shape of the nanoparticles tends to be spherical. When 0.85 ≤ α ≤ 1.0, rolling is ellipsoidal particles' main form of motion, and the friction force changes according to a periodic sinusoidal law. In the range of 0.80 ≤ α < 0.85, ellipsoidal particles primarily exhibit sliding as the dominant movement mode. As α decreases within this range, the friction force progressively increases. The friction coefficient μ calculated through MD simulation is 0.128, which is consistent with the experimental data. © The Author(s) 2024.

Keyword :

Ellipsoidal particles Ellipsoidal particles Molecular dynamics simulation Molecular dynamics simulation Nanoparticle additives Nanoparticle additives Tribological properties Tribological properties

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GB/T 7714 Pan, L. , Li, Z. , Chen, Y. et al. Effect of Ellipsoidal Particle Shape on Tribological Properties of Lubricants Containing Nanoparticles [J]. | Chinese Journal of Mechanical Engineering (English Edition) , 2024 , 37 (1) .
MLA Pan, L. et al. "Effect of Ellipsoidal Particle Shape on Tribological Properties of Lubricants Containing Nanoparticles" . | Chinese Journal of Mechanical Engineering (English Edition) 37 . 1 (2024) .
APA Pan, L. , Li, Z. , Chen, Y. , Lin, G. . Effect of Ellipsoidal Particle Shape on Tribological Properties of Lubricants Containing Nanoparticles . | Chinese Journal of Mechanical Engineering (English Edition) , 2024 , 37 (1) .
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Effects of ultrasonic vibration-assisted machining methods on the surface polishing of silicon carbide EI
期刊论文 | 2024 , 59 (18) , 7700-7715 | Journal of Materials Science
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Abstract :

The ultrasonic vibration-assisted polishing (UVAP) method, a recently developed advanced processing technology, is widely used in the processing of brittle materials. This study uses molecular dynamics (MD) simulations to investigate the polishing behavior of diamond grits on SiC workpieces during the UVAP process. The frequency (fz), amplitude (Az), and dimensions of the vibration are varied to investigate various aspects of the material removal process. In the low-frequency region, the UVAP processing method exacerbates taper slips and dislocations in the workpiece. In the high-frequency region, fz and Az can improve the MRR by more than 32% and reach 2–4 times higher than that of traditional scratching, respectively. The surface morphology obtained using MD simulation is consistent with the experimental results. In the ultrasonic elliptical vibration assisted polishing (UEVAP) method, fy not only causes a periodic and stable increase in temperature, which helps to transform atoms into an amorphous structure, but it also increases material removal rate (MRR) while decreasing friction factor and surface roughness. Appropriate increase of fz reduces forces and improves stress distribution. Az significantly increases MRR but results in a rough surface. In comparison to the UVAP process, the UEVAP method further improves MRR and produces smoother machined surfaces. Graphical Abstract: This study uses molecular dynamics (MD) simulations to investigate the polishing behavior of diamond grits on SiC workpieces during the UVAP process. The frequency (fz), amplitude (Az), and dimensions of the vibration are varied to investigate various aspects of the material removal process. (Figure presented.). © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.

Keyword :

Crystal atomic structure Crystal atomic structure Molecular dynamics Molecular dynamics Morphology Morphology Polishing Polishing Silicon carbide Silicon carbide Surface morphology Surface morphology Surface roughness Surface roughness Ultrasonic effects Ultrasonic effects Ultrasonic waves Ultrasonic waves

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GB/T 7714 Chen, Yunhui , Pan, Ling , Yin, Zhiqiang et al. Effects of ultrasonic vibration-assisted machining methods on the surface polishing of silicon carbide [J]. | Journal of Materials Science , 2024 , 59 (18) : 7700-7715 .
MLA Chen, Yunhui et al. "Effects of ultrasonic vibration-assisted machining methods on the surface polishing of silicon carbide" . | Journal of Materials Science 59 . 18 (2024) : 7700-7715 .
APA Chen, Yunhui , Pan, Ling , Yin, Zhiqiang , Wu, Yunli . Effects of ultrasonic vibration-assisted machining methods on the surface polishing of silicon carbide . | Journal of Materials Science , 2024 , 59 (18) , 7700-7715 .
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Lubrication Performance and Wear Mechanism of Double-Circular-Arc Spiral Bevel Gears for Nutation Drive in Mixed Lubrication SCIE
期刊论文 | 2024 | LUBRICATION SCIENCE
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Abstract :

A thermal elastohydrodynamic lubrication model is combined with a wear model under mixed lubrication to investigate the lubrication performance and wear characteristics of double-circular-arc spiral bevel gears for nutation drive. Moreover, the effects of operating conditions on the characteristic parameters of the film are analysed under the mixed lubrication point-contact conditions. Furthermore, the characteristics of gears in terms of friction coefficient and wear depth are discussed. According to the results, the performance of lubrication and wear during the mutual meshing of the convex tooth surface of the external bevel gear and the concave tooth surface of the inner bevel gear is better than that during the mutual meshing of the other pair of tooth surfaces. The minimum film thickness of the whole meshing process occurs near the inner of the bevel gear due to the joint action of the load and the end edge effect. Moreover, an increase in torque at a certain rotational speed is favourable to the lubrication performance of the meshing process. The wear depth in the double-circular-arc spiral bevel gears' meshing process is heavily influenced by the roughness of the tooth surface.

Keyword :

EHL EHL lubrication performance lubrication performance mixed lubrication mixed lubrication nutation double-circular-arc spiral bevel gears nutation double-circular-arc spiral bevel gears wear mechanism wear mechanism

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GB/T 7714 Lin, Bin , Pan, Ling , Tang, Jiating et al. Lubrication Performance and Wear Mechanism of Double-Circular-Arc Spiral Bevel Gears for Nutation Drive in Mixed Lubrication [J]. | LUBRICATION SCIENCE , 2024 .
MLA Lin, Bin et al. "Lubrication Performance and Wear Mechanism of Double-Circular-Arc Spiral Bevel Gears for Nutation Drive in Mixed Lubrication" . | LUBRICATION SCIENCE (2024) .
APA Lin, Bin , Pan, Ling , Tang, Jiating , Tan, Shiyang , Zhang, Jun . Lubrication Performance and Wear Mechanism of Double-Circular-Arc Spiral Bevel Gears for Nutation Drive in Mixed Lubrication . | LUBRICATION SCIENCE , 2024 .
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Lubrication Performance and Wear Mechanism of Double-Circular-Arc Spiral Bevel Gears for Nutation Drive in Mixed Lubrication EI
期刊论文 | 2025 , 37 (3) , 222-236 | Lubrication Science
Lubrication Performance and Wear Mechanism of Double-Circular-Arc Spiral Bevel Gears for Nutation Drive in Mixed Lubrication Scopus
期刊论文 | 2024 , 37 (3) , 222-236 | Lubrication Science
Non-Newtonian thermal elastohydrodynamic mixed lubrication in elliptical contact for nutation-driven double circular-arc spiral bevel gear pair SCIE
期刊论文 | 2024 , 238 (9) , 1121-1137 | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY
WoS CC Cited Count: 3
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Abstract :

The new type of nutation reducer with double circular-arc bevel gears as the core is characterized by advantages such as high load-bearing capacity, large transmission ratio, and simple structure. The existing research focuses on the machining methods of gears and the analysis of tooth contact. This article first time establishes an elastohydrodynamic mixed lubrication model for nutation double circular-arc bevel gear. The model's accuracy is verified by comparing it with existing test results. On this basis, combined with the finite element method and tooth contact analysis, the meshing characteristics, tooth contact characteristics, and lubrication characteristics of the double circular-arc bevel gear tooth surface are analyzed. The results show that the entrainment velocity at the contact point of the tooth surface during transmission is much higher than the sliding velocity. Consequently, the meshing motion is close to pure rolling. In constant-speed transmission, the oil film thickness at the engaging-in and exit points near the edge of the tooth surface is smaller than that at other meshing points on the tooth surface. This phenomenon can easily lead to mixed lubrication and lubrication failure, as well as tooth surface wear. During deceleration, i.e., when the speed drops to 50 r/min, the oil film thickness approaches zero, indicating that the gear has entered a mixed lubrication state. The proposed model can be used for lubrication analysis and improving transmission accuracy of nutation double circular-arc bevel gears.

Keyword :

double circular-arc double circular-arc elastohydrodynamic lubrication elastohydrodynamic lubrication mixed lubrication mixed lubrication nutation-driven nutation-driven Spiral bevel gear Spiral bevel gear

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GB/T 7714 Pan, Ling , Yin, Zhiqiang , Lin, Bin et al. Non-Newtonian thermal elastohydrodynamic mixed lubrication in elliptical contact for nutation-driven double circular-arc spiral bevel gear pair [J]. | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY , 2024 , 238 (9) : 1121-1137 .
MLA Pan, Ling et al. "Non-Newtonian thermal elastohydrodynamic mixed lubrication in elliptical contact for nutation-driven double circular-arc spiral bevel gear pair" . | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY 238 . 9 (2024) : 1121-1137 .
APA Pan, Ling , Yin, Zhiqiang , Lin, Bin , Zeng, Yi , Zhang, Jun . Non-Newtonian thermal elastohydrodynamic mixed lubrication in elliptical contact for nutation-driven double circular-arc spiral bevel gear pair . | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY , 2024 , 238 (9) , 1121-1137 .
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Non-Newtonian thermal elastohydrodynamic mixed lubrication in elliptical contact for nutation-driven double circular-arc spiral bevel gear pair EI
期刊论文 | 2024 , 238 (9) , 1121-1137 | Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
Non-Newtonian thermal elastohydrodynamic mixed lubrication in elliptical contact for nutation-driven double circular-arc spiral bevel gear pair Scopus
期刊论文 | 2024 , 238 (9) , 1121-1137 | Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
Ultrasonic rolling strengthening of TC11 titanium alloy surface: Corrosion and wear properties under extreme conditions SCIE
期刊论文 | 2024 , 550-551 | WEAR
WoS CC Cited Count: 10
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Abstract :

The surface of TC11 titanium alloy was polished and strengthened using ultrasonic rolling process (USRP) technology. The effects of USRP on the surface quality, friction and wear properties, corrosion resistance, and wear mechanisms of TC11 titanium alloy at room temperature, low temperature (-60 degrees C), high temperature (400 degrees C), and in corrosive environments were investigated by using optical microscope, microhardness tester, electrochemical workstation, multifunctional friction and wear tester, SEM, EDS, XRD, and XPS. The results indicate that USRP can effectively refine the surface grains of titanium alloy, reducing its surface roughness parameter by 80.4 % and increasing surface hardness and residual compressive stress by 21.7 % and 97.1 %, respectively. USRP is advantageous for producing a layer of TiO2 on the surface of titanium alloys, effectively enhancing the corrosion resistance of titanium alloy surfaces. USRP technology can improve the stability of surface hardness values of titanium alloys in harsh environments. The results of dry friction and wear tests using GCr15 steel balls as the counter material show that the USRP technology can effectively reduce the friction coefficient and wear loss at room, high and low temperatures. The results of corrosion and wear tests using Si3N4 as the counter material indicate that the USRP technology can effectively reduce the friction coefficient and wear volume in seawater corrosion environments. The USRP technology is most effective in reducing the hightemperature friction coefficient of titanium alloys and improving their wear resistance in low-temperature and corrosive environments. The primary wear form of TC11 titanium alloy after USRP has shifted from adhesive wear to abrasive wear.

Keyword :

Corrosion Corrosion Surface strengthening Surface strengthening Titanium alloy Titanium alloy Ultrasonic rolling Ultrasonic rolling Wear resistance Wear resistance

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GB/T 7714 Zheng, Kaikui , Zhao, Xinzhe , Pan, Ling et al. Ultrasonic rolling strengthening of TC11 titanium alloy surface: Corrosion and wear properties under extreme conditions [J]. | WEAR , 2024 , 550-551 .
MLA Zheng, Kaikui et al. "Ultrasonic rolling strengthening of TC11 titanium alloy surface: Corrosion and wear properties under extreme conditions" . | WEAR 550-551 (2024) .
APA Zheng, Kaikui , Zhao, Xinzhe , Pan, Ling , Ren, Zhiying . Ultrasonic rolling strengthening of TC11 titanium alloy surface: Corrosion and wear properties under extreme conditions . | WEAR , 2024 , 550-551 .
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Ultrasonic rolling strengthening of TC11 titanium alloy surface: Corrosion and wear properties under extreme conditions Scopus
期刊论文 | 2024 , 550-551 | Wear
Ultrasonic rolling strengthening of TC11 titanium alloy surface: Corrosion and wear properties under extreme conditions EI
期刊论文 | 2024 , 550-551 | Wear
Effects of ultrasonic vibration-assisted machining methods on the surface polishing of silicon carbide SCIE
期刊论文 | 2024 , 59 (18) , 7700-7715 | JOURNAL OF MATERIALS SCIENCE
WoS CC Cited Count: 3
Abstract&Keyword Cite Version(3)

Abstract :

The ultrasonic vibration-assisted polishing (UVAP) method, a recently developed advanced processing technology, is widely used in the processing of brittle materials. This study uses molecular dynamics (MD) simulations to investigate the polishing behavior of diamond grits on SiC workpieces during the UVAP process. The frequency (fz), amplitude (Az), and dimensions of the vibration are varied to investigate various aspects of the material removal process. In the low-frequency region, the UVAP processing method exacerbates taper slips and dislocations in the workpiece. In the high-frequency region, fz and Az can improve the MRR by more than 32% and reach 2-4 times higher than that of traditional scratching, respectively. The surface morphology obtained using MD simulation is consistent with the experimental results. In the ultrasonic elliptical vibration assisted polishing (UEVAP) method, fy not only causes a periodic and stable increase in temperature, which helps to transform atoms into an amorphous structure, but it also increases material removal rate (MRR) while decreasing friction factor and surface roughness. Appropriate increase of fz reduces forces and improves stress distribution. Az significantly increases MRR but results in a rough surface. In comparison to the UVAP process, the UEVAP method further improves MRR and produces smoother machined surfaces.Graphical AbstractThis study uses molecular dynamics (MD) simulations to investigate the polishing behavior of diamond grits on SiC workpieces during the UVAP process. The frequency (fz), amplitude (Az), and dimensions of the vibration are varied to investigate various aspects of the material removal process.

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GB/T 7714 Chen, Yunhui , Pan, Ling , Yin, Zhiqiang et al. Effects of ultrasonic vibration-assisted machining methods on the surface polishing of silicon carbide [J]. | JOURNAL OF MATERIALS SCIENCE , 2024 , 59 (18) : 7700-7715 .
MLA Chen, Yunhui et al. "Effects of ultrasonic vibration-assisted machining methods on the surface polishing of silicon carbide" . | JOURNAL OF MATERIALS SCIENCE 59 . 18 (2024) : 7700-7715 .
APA Chen, Yunhui , Pan, Ling , Yin, Zhiqiang , Wu, Yunli . Effects of ultrasonic vibration-assisted machining methods on the surface polishing of silicon carbide . | JOURNAL OF MATERIALS SCIENCE , 2024 , 59 (18) , 7700-7715 .
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Effects of ultrasonic vibration-assisted machining methods on the surface polishing of silicon carbide
期刊论文 | 2024 , 59 (18) , 7700-7715 | Journal of Materials Science
Effects of ultrasonic vibration-assisted machining methods on the surface polishing of silicon carbide EI
期刊论文 | 2024 , 59 (18) , 7700-7715 | Journal of Materials Science
Effects of ultrasonic vibration-assisted machining methods on the surface polishing of silicon carbide Scopus
期刊论文 | 2024 , 59 (18) , 7700-7715 | Journal of Materials Science
Tribological properties of polyaromatic organics as lubricating grease SCIE
期刊论文 | 2024 , 548-549 | WEAR
WoS CC Cited Count: 5
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Abstract :

The tribological properties of polyaromatic organics ( x P y E) as lubricating grease additives are studied by simulations and experiments. Molecular Dynamics (MD) simulations are used to simulate the mechanical properties of four kinds of polyaromatic organics (2P1E, 3P2E, 4P3E, and 5P4E) with different aromatic ring numbers and a mass fraction under 300 MPa and 5 m/s relative shear velocity of the two solid walls. The friction force, positive pressure, stress, and adsorption energy are calculated quantitatively. Meantime, the friction coefficient of lubricating grease and the wear morphology of the sample are measured by Multifunctional Friction and Wear Testing Machine. The results show that the organic additives adsorbed on the wall form a protective film during the shearing process, improving the bearing capacity and reducing friction and wear. Among them, the 3P2E organic additive has an appropriate number of aromatic rings. Its single molecular adsorption energy and unit adsorption energy are higher than other organic additives and can uniformly lay on the wall to form a stable, protective film. This demonstrates the best friction performance and improves the load -bearing capacity of the lubricating film, reducing maximum wall stress by 53.4 %.

Keyword :

Boundary lubrication Boundary lubrication Lubricant additive Lubricant additive Molecular dynamics Molecular dynamics Polyaromatic organics Polyaromatic organics

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GB/T 7714 Pan, Ling , Lian, Jinliang , Wu, Yunli et al. Tribological properties of polyaromatic organics as lubricating grease [J]. | WEAR , 2024 , 548-549 .
MLA Pan, Ling et al. "Tribological properties of polyaromatic organics as lubricating grease" . | WEAR 548-549 (2024) .
APA Pan, Ling , Lian, Jinliang , Wu, Yunli , Guo, Jinyang . Tribological properties of polyaromatic organics as lubricating grease . | WEAR , 2024 , 548-549 .
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Tribological properties of polyaromatic organics as lubricating grease EI
期刊论文 | 2024 , 548-549 | Wear
Tribological properties of polyaromatic organics as lubricating grease Scopus
期刊论文 | 2024 , 548-549 | Wear
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