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<p>Under fluid lubrication conditions, utilizing textures to generate stable gas–liquid two-phase lubrication has emerged as a promising drag reduction approach. A textured surface with both low-surface-energy and bubble induced-stored capability was fabricated by a “one-step” laser method that integrates surface functional layer and texture geometry. By optimizing texture distribution, a stable gas–liquid two-phase layer formed between tribology pairs. Compared with non-texture samples, the texture reduced the maximum friction by up to 61.3%. Furthermore, a dynamic two-phase lubrication model was established through simulation, accounting for oil film thickness variation and clarifying how textures affect fluid pressure distribution and gas entrapment. This work provides fundamental support for the design of friction-reducing morphologies on tribo-pairs, offering an effective solution to mitigate energy dissipation in mechanical friction systems.</p>

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Lubrication Performance of Gas–Liquid Two-Phase through Low-Surface-Energy Textures with Bubble Inducing and Stabilizing

  • 期刊论文

  • 发表日期：

    2026年4月25日

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  • Lixia Xue,
  • Yuanyuan Jiang,
  • Jiujun Xu,
  • Zhijun Yan,
  • Yan Shen

摘要

Under fluid lubrication conditions, utilizing textures to generate stable gas–liquid two-phase lubrication has emerged as a promising drag reduction approach. A textured surface with both low-surface-energy and bubble induced-stored capability was fabricated by a “one-step” laser method that integrates surface functional layer and texture geometry. By optimizing texture distribution, a stable gas–liquid two-phase layer formed between tribology pairs. Compared with non-texture samples, the texture reduced the maximum friction by up to 61.3%. Furthermore, a dynamic two-phase lubrication model was established through simulation, accounting for oil film thickness variation and clarifying how textures affect fluid pressure distribution and gas entrapment. This work provides fundamental support for the design of friction-reducing morphologies on tribo-pairs, offering an effective solution to mitigate energy dissipation in mechanical friction systems.