Tribological Behaviors and Friction-Induced Vibration and Noise Performance of TC4 with Bionic Coating Prepared by Laser Additive Manufacturing

• DOI: 10.1007/s11665-021-06141-0
• Publication Date: 2021-08-17T15:08:25Z
• Authors: Shaoqian Qin; Xiaoliang Shi; Yawen Xue; Qipeng Huang; Kaipeng Zhang
• Keywords: Titanium alloy

The poor tribological performance of TC4 alloy limits its wide application in engineering field. Inspired by the layered structure of shell, the bionic composite coating of TC4-SnAgCu (TSAC) on TC4 was designed. The coatings with three different lubricant concentration ratios of TC4-5wt.%SnAgCu (TSAC-5), TC4-10wt.%SnAgCu (TSAC-10) and TC4-15wt.%SnAgCu (TSAC-15) were prepared using laser additive manufacturing (LAM) technology, respectively. Tribological tests were, respectively, carried out at the loads of 10 N, 15 N, 20 N and 25 N. The results show that compared with TC4, TC4 with bionic coating has better tribological behaviors and reducing ability of friction-induced vibration and noise. Furthermore, at 20 N and room temperature, the complete lubrication film is more easily formed on the worn surface of TSAC-10. Hence, TSAC-10 obtains the minimum friction coefficient and average equivalent noise pressure, which are, respectively, reduced by 21.28 % and 18.76 % compared to those of TC4.