Abstract：The micro-dimples morphology was processed on the surface of 45# steel by the laser surface texturing and then filled with MoS2. The UMT-2 multifunctional friction and wear testing machine was used to investigate the friction and wear characteristics under different load and dimple density. The wear tracks of the samples were observed by scanning electronic microscopy (SEM) and energy dispersive spectrometer (EDS). The test results show that the lubrication properties of surfaces can be improved effectively by the technology of solid lubrication and laser surface texturing. Compared to untextured surfaces, the friction coefficient of textured surfaces is decreased significantly. In a certain range, with the increasing of dimple density, the friction coefficient is reduced, and the wearresistant and antiabrasion performance are improved significantly with optimum dimple density of 19.6%~30.0%. The solid lubricant was coated to the sample surfaces from the dimples during the friction process to form solid lubricating film stably and reliably.
2014, Vol. 35 
