Research on the influence of diamond coating microtexture on graphitization law and friction coefficient

Wang, Fan; Liu, Niu; Ma, Y.P.; Zhang, Xingxing; Han, Yuan

doi:10.1016/j.diamond.2022.109153

Cited by 18 publications

(3 citation statements)

References 11 publications

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“…For example, Zhang et al [9] studied the influence of depth on frictional wear and showed that surface texture could effectively reduce friction and wear through disc friction tests. Wu et al [10] studied the effect of diamond-coated microtexture on graphitization and friction coefficient, conducting friction tests with different texture morphology, surface density, and depth. Wang et al [11] evaluated the friction and wore behavior of polycrystalline diamond (PCD) in ambient air using a ball-on-disk high-temperature friction tester.…”

Section: Introductionmentioning

confidence: 99%

Exploring the evolution mechanisms of indentation and scratching on diamond structural transformation based on molecular dynamics

Tong,

Yang,

Liu

et al. 2024

Modelling Simul. Mater. Sci. Eng.

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Diamond, possessing high hardness and chemical stability, finds wide-ranging applications across various industries. However, during the friction process, a graphitization phenomenon may occur, which changes the mechanical properties of the diamond. In this study, molecular dynamics simulation was performed using SiC ball to investigate the influence of indentation depth and temperature on the graphitization transition of the diamond surface. The results showed that the dominant factor affecting the sp2 hybridization ratio during the indentation process was stress, while the temperature was the dominant factor during sliding. The results of this study can be used to understand the friction and wear behavior of diamonds and SiC ball and provide theoretical references for the industrial application of diamonds.

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Section: Introductionmentioning

confidence: 99%

Exploring the evolution mechanisms of indentation and scratching on diamond structural transformation based on molecular dynamics

Tong,

Yang,

Liu

et al. 2024

Modelling Simul. Mater. Sci. Eng.

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“…The D has great potential for application in many fields because of its ultrahigh hardness, ultrahigh Young's modulus, high thermal conductivity, lower thermal expansion coefficient and low friction coefficient. [1][2][3] Therefore, using D as reinforcement has the advantage of improving the mechanical properties, thermal conductivity and wear resistance of composites. [4][5][6] D reinforced metal matrix composites, in particular, are frequently used in cutting tools, wear-resistant coatings, and electronic packaging materials.…”

Section: Introductionmentioning

confidence: 99%

Effect of Chlorine Salts on TiC Coating Morphology and Bonding Strength of Diamond Surface in Molten Salt Reaction

Meng

Huang

2023

Cryst. Res. Technol.

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To obtain a high‐quality TiC coating on the diamond (D) surface and improve the interfacial properties of metal matrix composites, the optimized molten salt method is used to prepare TiC coatings on the D surface. The effects of NaCl, KCl, and NaCl–KCl molten salts on the uniformity, surface morphology, composition, and bonding ability of TiC coatings are investigated by scanning electron microscopy, energy‐dispersive X‐ray spectroscopy (EDS), X‐ray diffraction, and cold–hot cycling experiments. The results show that the boiling and pickling processes after the molten salt reaction can effectively remove the residual chloride salts and Ti powders to obtain clean TiC‐coated D. The TiC particles of the coating surfaces prepared by NaCl and KCl molten salts are finer and more uniform, which is due to their higher melting points and shorter real reaction time compared with NaCl–KCl mixed salts. The TiC coating prepared by KCl has the best bonding ability and can withstand 50 times as many cold–hot cycles due to its uniform fine deposition particles and appropriate thickness. And, during cold–hot cycles, it can be found that the TiC coating cracking and shedding occur primarily at the edges and corners of the D with internal thermal stress concentration.

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“…He et al 18 studied the tribological properties of cemented carbide surface under the influence of laser processing parameters and texture parameters. Wu et al 19 analyzed the friction tests of micro-textured diamond coatings with different texture shapes, surface densities and depths. Tong et al 20 analyzed the influence of circular micro-texture parameters on friction strength, friction coefficient and wear rate, showed that the laser scanning speed, laser power and the diameter of the circular micro-texture had the direct impact on the friction properties of the cemented carbide surface.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of tilting pad thrust bearing incorporating the surface roughness, texture and turbulence effect

Wang,

Zou,

Duan

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part J:

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In order to improve the lubrication performance of the friction pair, the effect of composite micro-texture on the lubrication performance of the tilting pad thrust bearing is studied. Based on the structural model of tilting pad thrust bearing considering composite micro-texture, the lubrication characteristics of thrust bearing with composite micro-texture parameters and tilting pad parameters are analyzed. At the same time, the theoretical model of tilting pad composite micro-texture bearing considering roughness and turbulence effect is established, and the performance of thrust bearing considering roughness and turbulence effect is studied. The results show that the performance of composite micro-textured bearings is better than that of single micro-textured bearings, the performance of tilting pad bearings is better than that of parallel pad bearings, and the performance of circular composite fish-shaped micro-textured tilting pad bearings is the best. The optimal bearing fulcrum position is near the inner diameter, and the optimal fulcrum circumferential inclination angle is about 27.5°. Considering the roughness and turbulence effect, the maximum pressure and bearing capacity of the bearing improves, and the friction coefficient significantly reduces.

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Research on the influence of diamond coating microtexture on graphitization law and friction coefficient

Cited by 18 publications

References 11 publications

Exploring the evolution mechanisms of indentation and scratching on diamond structural transformation based on molecular dynamics

Exploring the evolution mechanisms of indentation and scratching on diamond structural transformation based on molecular dynamics

Effect of Chlorine Salts on TiC Coating Morphology and Bonding Strength of Diamond Surface in Molten Salt Reaction

Performance analysis of tilting pad thrust bearing incorporating the surface roughness, texture and turbulence effect

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