Surface texture technology is widely used in various friction pairs to obtain good lubrication. However, ever present researches are mainly focused on regular and simple texture shapes such as dimples and grooves. Few works on complex micro texture have been reported due to preparing difficulty. In this paper, two surfaces with complex micro texture, which are micro scale textured (MST) surface and micro furrow textured (MFT) surface, are prepared by ultrasonic vibration-assisted milling (UVAM) method. Also, their tribological behaviors under starved oil lubrication and reciprocating sliding condition are experimentally investigated with a smooth sample as comparison. Experimental results indicate that although the application of ultrasonic vibration leads to the increase of roughness of MST and MFT surfaces, both the two machined micro textures contribute to the improvement of lubricant film strength, and MFT surface has better tribological performance than that of MST surface. As a result, under test conditions, micro texture formed by UVAM method can greatly improve the tribological property of friction surface, especially for its bearing capacity and wear resistance.
Surface texture Friction and wear Vibration cutting Ultrasonic vibration
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