Temperature-dependent negative friction coefficients in superlubric molybdenum disulfide thin films

Kwang-Hua, Chu Rainer

doi:10.1016/j.jpcs.2020.109526

Cited by 9 publications

(3 citation statements)

References 44 publications

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“…In addition, Li et al [89] have studied that the macroscale superlubricity (μ ≈ 0.006) of steel surfaces lubricated with 1,3-diketone can also be achieved by a tribochemical running-in process in TFL regime. Chu et al [96] have reported that a thin solid lubricant film has a friction coefficient of about 0.0005, which is in the ultra-lubricious zone.…”

Section: Superlubricity In Thin Film Lubrication Regionmentioning

confidence: 99%

A Review of Recent Advances in Superlubricity

Xiong

Xia

2023

Tribology Online

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In the past ten years, the scope of influence of tribology in various fields has been expanded, and the research activities related to superlubricity have also increased greatly. The latest development of superlubricity in recent three years is summarized and the future research direction is prospected. Different aspects of superlubricity have been overviewed. As a highly interdisciplinary field, superlubricity's studies are widely distributed among various disciplines, and there are many aspects of superlubricity that are not covered in this review. Despite the limitations, our group hoped that the overview will bring together recent outstanding researches and be of benefit to the growing number of tribology researchers.

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Section: Superlubricity In Thin Film Lubrication Regionmentioning

confidence: 99%

A Review of Recent Advances in Superlubricity

Xiong

Xia

2023

Tribology Online

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“…For example, Xue et al [34] studied the influence of the surface structure and lubricant on the friction vibration and noise of GCr15 bearing steel. In addition, Kwang-Hua [35] studied the temperature dependence of the friction properties of ultra-lubricated molybdenum disulfide films.…”

Section: Application Of Information Technology To the Field Of Tribologymentioning

confidence: 99%

Tribo-informatics: Concept, architecture, and case study

et al. 2020

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Friction plays a vital role in energy dissipation, device failure, and even energy supply in modern society. After years of research, data and information on tribology research are becoming increasingly available. Because of the strong systematic and multi-disciplinary coupling characteristics of tribology, tribology information is scattered in various disciplines with different patterns, e.g., technical documents, databases, and papers, thereby increasing the information entropy of the system, which is inconducive to the preservation and circulation of research information. With the development of computer and information science and technology, many subjects have begun to be combined with information technology, and multi-disciplinary informatics has been born. This paper describes the combination of information technology with tribology research, presenting the connotation and architecture of tribo-informatics, and providing a case study on implementing the proposed concept and architecture. The proposal and development of tribo-informatics described herein will improve the research efficiency and optimize the research process of tribology, which is of considerable significance to the development of this field.

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“…e applications of different nanoparticles to improve the heat transfer rate are discussed by many researchers [44,45]. Turkyilmazoglu [46] studied the flow past a vertical infinite isothermal plate in a viscous electrically conducting natural convective incompressible nanofluid.…”

Section: Introductionmentioning

confidence: 99%

Maxwell Nanofluid Flow over an Infinite Vertical Plate with Ramped and Isothermal Wall Temperature and Concentration

Khan

Ali

Arif

et al. 2021

Mathematical Problems in Engineering

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The aim of this study is to investigate how heat and mass transfer impacts the unsteady incompressible flow of Maxwell fluid. An infinite vertical plate with ramped and isothermal wall temperature and concentration boundary conditions is considered with the Maxwell fluid. Furthermore, in this study, engine oil has been taken as a base fluid due to its enormous applications in modern science and technologies. To see the importance of nanofluids, we have suspended molybdenum disulfide in engine oil base fluid to enhance its heat transfer rate. To investigate the flow regime, the system of equations was derived in the form of partial differential equations. The exact solutions to the complex system are obtained using the Laplace transform technique. Graphically, the impact of different embedded parameters on velocity, temperature, and concentration distributions has been shown. Through using the graphical analysis, we were interested in comparing the velocity, temperature, and concentration profiles for ramped and isothermal wall temperature and concentration. The magnitude of velocity, temperature, and concentration distributions is greater for an isothermal wall and less for a ramped wall, according to our observations. We observed that adding molybdenum disulfide nanoparticles to the engine oil increased the heat transfer up to 12.899%. Finally, the corresponding skin friction, Nusselt number, and Sherwood number have been calculated and presented in a tabular form.

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Temperature-dependent negative friction coefficients in superlubric molybdenum disulfide thin films

Cited by 9 publications

References 44 publications

A Review of Recent Advances in Superlubricity

A Review of Recent Advances in Superlubricity

Tribo-informatics: Concept, architecture, and case study

Maxwell Nanofluid Flow over an Infinite Vertical Plate with Ramped and Isothermal Wall Temperature and Concentration

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