Wind power gears will be excessively worn due to lubrication failure during operation. Herein, the tribological properties of rubbing pairs are improved by filling solid lubricants into surface texture. In texture design, three types of topological textures (Circle (C), Hexagon (H) and Circle/Hexagon (CH)) were obtained by cell topology optimization, and then three cases with 20%, 30%, and 40% density were designed for each texture. Next, SnAgCu and TiC were deposited in texture of AISI 4140 steel (AS) to obtain 9 kinds of self-lubricating surfaces. Among them, AS with 30% CH density (AS-CH30) exhibits excellent mechanical and tribological properties. Compared with AS-C and AS-H, the maximum equivalent stress of AS-CH was decreased by 10.86% and 5.37%, respectively. Friction coefficient and wear rate of AS-CH30 were 79.68% and 78% lower than those of AS. The excellent tribological performances of AS-CH30 can be attributed to the synergistic effect of topological surface and solid lubricants. Topological surface can not only reduce fluctuation of equivalent stress, but also promote the stored lubricants to be easily transferred at the contact interface to form a 200 nm lubricating film containing solid lubricants (mainly), oxides and wear debris.

风电齿轮在运行过程中会因润滑失效而过度磨损。在此，通过在表面纹理中填充固体润滑剂来改善摩擦副的摩擦学性能。纹理设计中，通过单元拓扑优化得到了三种类型的拓扑纹理（圆形（C）、六边形（H）和圆形/六边形（CH）），然后分别设计了密度为20%、30%和40%的三种情况。专为每种纹理而设计。接下来，在AISI 4140钢（AS）的织构中沉积SnAgCu和TiC以获得9种自润滑表面。其中，CH密度为30%的AS（AS-CH30）表现出优异的机械和摩擦学性能。与AS-C和AS-H相比，AS-CH的最大等效应力分别降低了10.86%和5.37%。 AS-CH30的摩擦系数和磨损率分别比AS低79.68%和78%。 AS-CH30优异的摩擦学性能可归因于拓扑表面和固体润滑剂的协同效应。拓扑表面不仅可以减少等效应力的波动，而且可以促进储存的润滑剂在接触界面上容易转移，形成含有固体润滑剂（主要）、氧化物和磨屑的200 nm润滑膜。