Anti-wear properties of multi-bioinspired textures with hierarchical and superhydrophobic structures under water lubrication

Surface texturing is a promising way to reduce wear, but further improvements in wear resistance via single textures remain challenging. Inspired by multiple biological surfaces, we design and prepare two microtextures (MTs) on AISI 440C steel by femtosecond laser and then construct superhydrophobic micro/nanostructures in the MTs to obtain two multi-bioinspired hierarchical textures (MHTs). The MHTs show significant wear resistance under relatively low loads and high frequencies. Remarkably, compared with polished surfaces, the wear rates of the dimple-shaped MHTs (DMHTs) and the groove-shaped MHTs decrease by 64.6% and 50.0%, respectively. The introduction of the superhydrophobic micro/nanostructures enables the maximum wear reduction rate of the DMHTs 121.2% higher than that of the corresponding single textures. The wear resistance of the MHTs originates from the synergetic effects (manifested by the increases in surface hardness and hydro-dynamic pressure) of the laser-ablated MTs and superhydrophobic micro/nanostructures. We envision that this work will inspire the design and fabrication of more multi-bioinspired textures to achieve further improvements in wear resistance of mechanical parts under water lubrication.

相关文章

  • Crystal Phase Engineering Accelerates Hydrogen Reverse Spillover for Efficient Alkaline Hydrogen Production
    [Jun Zhang, Xiaoyu Chen, Bin Wu, Xiangyang Guo, Xianlin Qu, Qunzhi Ma, Ying Wang, Jiayi Li, Wei Liu, Xu Li, Liyun Cao, Yi Wang, Jianfeng Huang, Jingxiang Zhao, Fuxiang Zhang, Yongqiang Feng]
  • Direct impure water electrolysis at industrial scale
    [Jichao Zhang, Jianrui Feng, Daojin Zhou, Hongtao Wang, Wei Liu, Longxiang Liu, Wei Zong, Jiexin Zhu, Ruwei Chen, Hongzhen He, Mingqiang Liu, Wei Zhang, Faze Chen, Ivan P. Parkin, Xiaoming Sun, Guanjie He]
  • Microstructure and Tensile Properties of Mar-M247 Superalloy Turbine Blades
    [Wei Liu, Yongfeng Sui, Yao Shichuan, Zhao Xinbao, Xu Jiachen, Fan Yunpeng, Liu Hao, Yue Quanzhao, Xia Wanshun, Gu Yuefeng, Zhang Ze]
  • qq

    成果名称:低表面能涂层

    合作方式:技术开发

    联 系 人:周老师

    联系电话:13321314106

    ex

    成果名称:低表面能涂层

    合作方式:技术开发

    联 系 人:周老师

    联系电话:13321314106

    yx

    成果名称:低表面能涂层

    合作方式:技术开发

    联 系 人:周老师

    联系电话:13321314106

    ph

    成果名称:低表面能涂层

    合作方式:技术开发

    联 系 人:周老师

    联系电话:13321314106

    广告图片

    润滑集