Tribological performance of UV picosecond laser multi-scale composite textures for C/SiC mechanical seals: Theoretical analysis and experimental verification

Chen, Tianyang; Ji, Jinghu; Fu, Yonghong; Yang, Xiping; Fu, Hao; Fang, Lunan

doi:10.1016/j.ceramint.2021.04.312

Cited by 32 publications

(9 citation statements)

References 30 publications

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“…In recent years, surface texture [22,23], as a surface treatment technology, has exhibited a favorable tribological performance in piston rings [24], cutting tools [25], mechanical seals [26,27], and biomedical application [28]. Inspired by the fact that pit array textures have good anti-wear effect under the condition of dry friction [29], 5 different shapes of pit array textures are created on the specimens' surface, and the reduction effect of texture on the disassembly damage of interference fit is observed by orthogonal experiment.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Reduction Effect of Pit Texture on Disassembly Damage for Interference Fit

Zhou

Gao

et al. 2023

Chin. J. Mech. Eng.

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After remanufacturing disassembly, several kinds of friction damages can be found on the mating surface of interference fit. These damages should be repaired and the cost is closely related to the severity of damages. Inspired by the excellent performance of surface texture in wear reduction, 5 shapes of pit array textures are added to the specimens’ surface to study their reduction effect of disassembly damage for interference fit. The results of disassembly experiments show that the order of influence of texture parameters on disassembly damage is as follows: equivalent circle diameter of single texture, texture shape and texture surface density. The influence of equivalent circle diameter of single texture and texture shape are obviously more significant than that of texture surface density. The circular texture with a surface density of 30% and a diameter of 100 μm shows an excellent disassembly damage reduction effect because of its perfect ability of abrasive particle collection. And the probability of disassembly damage formation and evolution is also relatively small on this kind of textured surface. Besides, the load-carrying capacity of interference fit with the excellent texture is confirmed by load-carrying capacity experiments. The results show that the load-carrying capacity of the excellent texture surface is increased about 40% compared with that of without texture. This research provides a potential approach to reduce disassembly damage for interference fit.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on the Reduction Effect of Pit Texture on Disassembly Damage for Interference Fit

Zhou

Gao

et al. 2023

Chin. J. Mech. Eng.

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“…The appearance of these local "hot spots" and high pressure are the main cause for the harm to the friction pairs. The performance of friction pairs may be considerably improved by the surface texture technology and has been successfully used in the mechanical field [2][3] . Reasonable surface texture can significantly minimize friction and wear on the end face.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Contact Characteristics of Rough Surface/Microporous For Flat Friction Pair

Ahmat²,

Zhang³

et al. 2023

J. Phys.: Conf. Ser.

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The rough surface has serious friction, wear and thermal damage during the sliding friction process in engineering applications, which leads to the failure of the friction pair. The rough surface contact is simplified into a rough surface with fractal properties and an ideal plane. The interaction between the asperities of the contacting body and the coupling effect of frictional heat flow at the frictional interface is considered. The impact of contact pressure and temperature rise between microporous model and non porous model on rough surface was compared, as well as the impact of Sa on the area, contact pressure and temperature rise of the friction pair. The results show that in the process of uniform sliding friction, when the asperities pass through the micropores, the asperities are embedded in the edge of the micropores so that the peak contact pressure increases, cutting occurs, and the deformation is affected by the interaction between the micropores and the asperities. The position of the highest pressure point is not fixed due to the deformation of the asperity, which improves the force of the asperity, and the micro-hole reduces the contact zone, thereby reducing the contact of the asperity and the pressure extreme point and reducing the pressure.Micropores reduce the temperature and enhance the wear condition of the end face. Small surface roughness can decrease the risk of end face wear.

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“…Surface texture is used as a microstructure to improve the tribological properties of two contact surfaces and is widely employed in mechanical parts such as mechanical seals [24][25][26], cylinder liners [27,28], and bearings [29,30]. Hamilton [31] first discovered that the irregular micro-texture on the surface of the rotating shaft seal could effectively improve the lubrication performance of the friction system.…”

Section: Introductionmentioning

confidence: 99%

Effect of texture on hydrodynamic journal bearing performance under starvation lubrication

Li¹,

Niu²

2023

Surf. Topogr.: Metrol. Prop.

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The effect of texture on tribological properties of journal bearings operating under starvation lubrication conditions was studied in this paper. The P-θ model with mass conservation boundary conditions was used to accurately predict the oil film distribution in the full oil film/starvation region of the textured bearing; the model was solved numerically, using the finite volume method. Effects of various degrees of starvation lubrication on the tribological performance parameters, such as eccentricity, attitude angle, full film area, and friction coefficient, in textured bearings were discussed. The results have shown that the effect of texture on the bearing performance was affected by starvation lubrication conditions. Further, effect severity varied with starvation levels; however, the texturing still improved the working performance of the journal bearing in the case of weak starvation. Texturing increased the bearing load carrying capacity and reduced the friction coefficient, improving safety and preventing safety accidents due to oil supply problems.

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Tribological performance of UV picosecond laser multi-scale composite textures for C/SiC mechanical seals: Theoretical analysis and experimental verification

Cited by 32 publications

References 30 publications

Experimental Study on the Reduction Effect of Pit Texture on Disassembly Damage for Interference Fit

Experimental Study on the Reduction Effect of Pit Texture on Disassembly Damage for Interference Fit

Analysis of Contact Characteristics of Rough Surface/Microporous For Flat Friction Pair

Effect of texture on hydrodynamic journal bearing performance under starvation lubrication

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