Directional transport and coalescence behavior on Titanium-Tantalum alloy surface: Insights from experiment and molecular dynamics simulation

CH Liu and XJ Zhu and LZ Ye and Z Tong and XM Li, TRIBOLOGY INTERNATIONAL, 180, 108303 (2023).

DOI: 10.1016/j.triboint.2023.108303

Friction and wear of artificial joints are severe problems. By designing a structure for directional transporting lubricant onto the Ti-Ta alloy surface, the friction or wear can be effectively reduced. Herein, molecular dy-namics (MD) simulation and experiment were employed to study the directional transport and coalescence behavior of droplets on wedge-shape structure Ti-5Ta (wt%) alloy surface. Results show that water droplets can be continuously transported. Moreover, the experimental results of static and dynamic contact angle measure-ment show that the experiment agrees well with the MD simulation. Finally, the anti-gravity directional transport was achieved on a tilting Ti-5Ta (wt%) alloy surface. This work provides insights for reducing friction and extending service life of artificial joints in the medical field.

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