激光与光电子学进展, 2017, 54 (3): 031403, 网络出版: 2017-03-08   

激光脉冲次数对织构化涂层的摩擦学性能影响

Effect of Number of Laser Pulses on Tribological Property of Textured-Coating
作者单位
1 南京航空航天大学金城学院机电工程系, 江苏 南京 211156
2 南京理工大学材料科学与工程学院, 江苏 南京 210094
摘要
采用Nd∶YAG固体脉冲激光器对45钢盘表面进行了织构化处理,形成了具有不同微孔深度的织构化阵列。在织构化钢盘表面制备了Ni-MoS2复合镀层,对Al2O3陶瓷球/45钢盘进行了摩擦性能测试,并对试样表面的磨损形貌进行了分析。结果表明,不同脉冲次数对微孔最大直径的影响较小,但随着脉冲次数的增加,微孔深度和内部空腔体积显著增大。在干摩擦条件下,具有织构化阵列的复合镀层摩擦系数比未织构镀层的降低0.1~0.15,且随着微孔深度的增加,摩擦系数进一步降低,其中40个脉冲形成的织构化镀层具有最佳的抗磨减摩性能,且磨损寿命是20个脉冲形成的织构化镀层的3倍。
Abstract
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.

万轶, 李建亮, 熊党生, 李航. 激光脉冲次数对织构化涂层的摩擦学性能影响[J]. 激光与光电子学进展, 2017, 54(3): 031403. 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): 031403.

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