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<p>To further improve the tribological properties of 304 stainless steels, a novel complex surface texture was proposed and investigated in this study. The surface texture was processed firstly on sample surface in air environment and then was refabricated under CuSO<sub>4</sub> liquid assistance condition using laser technology. The surface morphology and elemental content of test samples were measured with the white light interferometry and XRD instruments. A performance verification of tribological properties for surface texture was tested using an NWF-500 reciprocating tribological wear tester under dry friction and oil lubrication conditions, respectively. Experimental results show that liquid assistance process could reduce the surface oxidation problem on sample surface due to thermal action of laser beam, and then a Cu element diffusion on its surface was observed simultaneous. Therefore, a better interfacial tribological properties was obtained under dry condition due to the Cu element diffusion, which plays a role of solid lubrication to a certain extent. Meantime, the tribological properties of it for oil lubrication case are all decreased due to the surface morphology improvement. The main contribution of this study is to lay a foundation and reference for the tribological property improvement of 304 stainless steels and surface textured technology.</p>

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Tribological Performance of 304 Stainless Steel with Surface Texture Fabrication in CuSO4 Liquid Using Laser Method

  • 期刊论文

  • 发表日期：

    2025年11月11日

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  • Hui Yang,
  • Zhenjiang Li,
  • Cuiya Feng,
  • Minghua Pang

摘要

To further improve the tribological properties of 304 stainless steels, a novel complex surface texture was proposed and investigated in this study. The surface texture was processed firstly on sample surface in air environment and then was refabricated under CuSO4 liquid assistance condition using laser technology. The surface morphology and elemental content of test samples were measured with the white light interferometry and XRD instruments. A performance verification of tribological properties for surface texture was tested using an NWF-500 reciprocating tribological wear tester under dry friction and oil lubrication conditions, respectively. Experimental results show that liquid assistance process could reduce the surface oxidation problem on sample surface due to thermal action of laser beam, and then a Cu element diffusion on its surface was observed simultaneous. Therefore, a better interfacial tribological properties was obtained under dry condition due to the Cu element diffusion, which plays a role of solid lubrication to a certain extent. Meantime, the tribological properties of it for oil lubrication case are all decreased due to the surface morphology improvement. The main contribution of this study is to lay a foundation and reference for the tribological property improvement of 304 stainless steels and surface textured technology.