Effect of Groove Width on Micromachine Groove Texture Tribology Characteristics of 0Cr17Ni7Al

Abstract

Friction and wear are the main forms of material surface failure. Surface modification is very effective in friction reduction and wear resistance systems. Therefore, as a method of surface modification to improve the tribological properties of materials, surface texture has been widely loved by scholars. However, most scholars use laser and other processing methods to prepare the surface texture. Although these processing methods have a high preparation efficiency, they cannot obtain a surface texture with high dimensional accuracy due to their non-contact processing characteristics. Moreover, previous studies on different surface texture preparation methods are insufficient. Scholars have not fully studied the size parameters of surface modification. Micromachining is a contact machining method. It has high dimensional accuracy. Therefore, the surface groove texture of 0Cr17Ni7Al material commonly used in sliding bearings was prepared by micromachining in this paper. Under dry friction conditions, the effects of different groove widths on the tribological properties of surface texture were studied. The results show that the friction coefficient at the 0.6 mm-wide groove texture is the lowest, σ = 0.632. The minimum wear rate is ω = 3.351 × 10−4 mm3/(N·mm). The friction coefficient and wear rate of all groove textures are lower than those of untextured surfaces. It can be judged that the groove texture prepared by micromachining has good friction reduction and wear resistance under the same load, time, and linear speed. With the increase of the groove width, the friction coefficient and wear rate of groove texture decrease first and then increase.

Contact and Tribological Study of Micro/Nano Groove Texture on the Surface of Gas Bearing Materials Based on Nanoscale

“…Moreover, the friction coefficient is relatively concentrated and stable. We also mentioned this stationarity in previous studies [ 22 , 36 ]. The change trend of the friction coefficient for the five groups of friction experiments under a 15 mm rotating radius is untextured > 0.8 mm texture > 1.0 mm texture > 0.4 mm texture > 0.6 mm texture.…”

“…The chemical composition and mass fraction of the friction pair are shown in Table 3 . We also mentioned this in previous studies [ 22 ].…”

“…It has a good antifriction effect. Surface texture is widely used in the hydrophobic [ 18 , 19 ], antifriction [ 20 , 21 , 22 ], friction-increasing [ 23 ] and wear-resistant [ 24 , 25 ] fields. At present, there are many methods to prepare surface texture, mainly micro/nano-scale processing, but including ultrasonic processing technology, ion etching [ 26 , 27 ], electrochemical processing technology [ 28 , 29 ], chemical etching [ 30 , 31 , 32 ], laser processing [ 33 , 34 , 35 , 36 ] and micromachining technology [ 37 , 38 ].…”

Effect of Micro-Dimple Geometry on the Tribological Characteristics of Textured Surfaces

“…Thus, a problem of reducing friction and wear between the contact surfaces has become a key research topic in recent times. Apart from the design of friction systems, the modification of surface topography, has become one of the popular strategies in recent times to reduce friction and wear between the contact surfaces [1][2][3]. Etsion and co-workers [4], first, highlighted the response of surface textures on the tribological performance of seals and piston rings in various lubrication environments.…”