Laser & Optoelectronics Progress, Volume. 54, Issue 3, 31403(2017)
Effect of Number of Laser Pulses on Tribological Property of Textured-Coating
The texturing process on 45 steel disc surface is done by using Nd∶YAG solid pulsed lasers and the textured arrays with different micro-hole depths are formed. The Ni-MoS2 composite coatings are prepared on the surfaces of textured steel discs. The test of the tribological performance of Al2O3 ceramic ball/45 steel disc is done, and the worn morphology of sample surfaces is analyzed. The results show that number of pulses has a small influence on the maximum diameters of micro-holes. As the number of pulses increases, the depths of micro-holes and the volumes of internal cavities increase significantly. Under the dry friction condition, the friction coefficient of textured-coating is less than that of untextured-coating by 0.1-0.15, and the friction coefficient is further decreased with micro-hole depths increasing. The textured coating with 40 pulses has the best antifriction property, and its wear life is three times of that of the textured coating with 20 pulses.
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Wan Yi, Li Jianliang, Xiong Dangsheng, Li Hang. Effect of Number of Laser Pulses on Tribological Property of Textured-Coating[J]. Laser & Optoelectronics Progress, 2017, 54(3): 31403
Category: Lasers and Laser Optics
Received: Nov. 14, 2016
Accepted: --
Published Online: Mar. 8, 2017
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