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<p>To evaluate the impact of surface texturing on the tribological behavior of ZA-27/TiC composites, laser surface texturing (LST) was employed to fabricate micro-grooved patterns with varying geometrical shapes. Sliding wear tests were conducted under dry conditions using a ball-on-disk tribometer to compare the performance of textured and untextured samples. The results revealed that the 10 wt% TiC composite exhibits the lowest wear rate and coefficient of friction. Worn surface analysis revealed severe adhesive wear, ploughing, and delamination in the ZA-27 alloy, whereas TiC reinforcement shifted the mechanism to mild ploughing and microcracking. Additionally, the textured surfaces exhibited significantly lower friction coefficients and superior wear resistance compared to the untextured surfaces. The tribological behavior was found to be strongly influenced by the geometry of the surface textures. Among the texture patterns tested, the samples with circular surface textures demonstrated superior performance. Surface roughness analysis further validated these findings, as a 10 wt% TiC composite with circular texturing exhibited the lowest average roughness (Ra) of 1.3&#xa0;μm. The ZA-27 + 10 wt% TiC composite with circular surface texturing showed the best overall performance, making it well-suited for high-wear applications such as bearings and bushings.</p>

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A study on the effect of laser surface texturing on the dry sliding behavior of ZA-27/TiC composites

  • 期刊论文

  • 发表日期：

    2026年2月19日

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  • Muneeb Bashir,
  • Khursheed Ahmad Sheikh,
  • Sheikh Shahid Saleem,
  • Mohammad Mohsin Khan,
  • Mohammad Nadeem Bhat,
  • Mohammad Farooq Wani

摘要

To evaluate the impact of surface texturing on the tribological behavior of ZA-27/TiC composites, laser surface texturing (LST) was employed to fabricate micro-grooved patterns with varying geometrical shapes. Sliding wear tests were conducted under dry conditions using a ball-on-disk tribometer to compare the performance of textured and untextured samples. The results revealed that the 10 wt% TiC composite exhibits the lowest wear rate and coefficient of friction. Worn surface analysis revealed severe adhesive wear, ploughing, and delamination in the ZA-27 alloy, whereas TiC reinforcement shifted the mechanism to mild ploughing and microcracking. Additionally, the textured surfaces exhibited significantly lower friction coefficients and superior wear resistance compared to the untextured surfaces. The tribological behavior was found to be strongly influenced by the geometry of the surface textures. Among the texture patterns tested, the samples with circular surface textures demonstrated superior performance. Surface roughness analysis further validated these findings, as a 10 wt% TiC composite with circular texturing exhibited the lowest average roughness (Ra) of 1.3 μm. The ZA-27 + 10 wt% TiC composite with circular surface texturing showed the best overall performance, making it well-suited for high-wear applications such as bearings and bushings.