This study optimizes the texture geometry by investigating the individual effect of texture depth and area density of cross hatched texture to improve the tribological performance of hip implant at normal walking speed. Texture width was selected conforming to Hertzian contact of Ti6Al4V/ultrahigh molecular weight polyethylene tribo-pair. Crosshatched textures with different depths and area densities were fabricated on polished Ti6Al4V blocks using laser surface texturing technique. Tribology tests were carried out for different loads under bio-lubricated condition. Result shows significant influence of texture depth and area density for better tribological performance of the tribo-pair. Nearly 50% friction reduction and 15 times reduction in wear obtained for 5 µm depth at 25% area density. Surface morphology of worn-out pins showed abrasion wear mechanism.

中文翻译：

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用于增强生物环境下摩擦学性能的交叉影线纹理几何参数的综合分析

本研究通过研究纹理深度和网格纹理的面积密度的个体效应来优化纹理几何形状，以提高髋关节植入物在正常步行速度下的摩擦学性能。纹理宽度的选择符合 Ti6Al4V/超高分子量聚乙烯摩擦对的赫兹接触。使用激光表面纹理技术在抛光的 Ti6Al4V 块上制造具有不同深度和面积密度的交叉影线纹理。在生物润滑条件下对不同负载进行摩擦学测试。结果表明纹理深度和面积密度对摩擦对更好的摩擦学性能有显着影响。在 25% 的面积密度下，5 µm 深度的摩擦减少了近 50%，磨损减少了 15 倍。