Abstract The present work focused on analyzing the wear and friction coefficients of Si3N4 against titanium alloy grade 5 material using ball-on-disc tribometer for a sliding distance of 20 km with five different bio-lubricants. Later using finite element submodeling technique, post implantation wear is predicted for 2 years considering four different gait activities which includes normal walking, stairs down 25 kg, carrying 25 kg and lifting 40 kg. The friction coefficient value is found to be least for sesame oil. The increase in percentage difference in friction coefficients for phosphate buffer saline (PBS), distilled water, Ringer's solution and saline solution are 77.27%, 81.81%, 84.09% and 86.36% when compared with sesame oil. The percentage difference in reduction in wear coefficients for sesame oil, saline solution, Ringer's solution and PBS are 36.49%, 48.81%, 56.11% and 84.36%. The linear and volumetric wear is found to be quite low for all gait activities for PBS bio-lubricant. Overall the least linear and volumetric wear are obtained for normal walking gait activity followed by Stair down 25 kg, Carrying 25 kg and Lifting 40 kg gait activity.

中文翻译：

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研究氮化硅对带有生物润滑剂的 ​​Ti6Al4V 合金磨损的实验和子建模技术用于各种步态活动

摘要 目前的工作重点是使用球盘摩擦计分析 Si3N4 对 5 级钛合金材料的磨损和摩擦系数，滑动距离为 20 公里，使用五种不同的生物润滑剂。后来使用有限元子建模技术，考虑到四种不同的步态活动，包括正常步行、下楼梯 25 公斤、负重 25 公斤和举起 40 公斤，预计植入后 2 年的磨损。发现芝麻油的摩擦系数值最小。与芝麻油相比，磷酸盐缓冲盐水（PBS）、蒸馏水、林格氏溶液和盐水溶液的摩擦系数差异增加了77.27%、81.81%、84.09%和86.36%。芝麻油、盐水溶液、林格氏磨损系数降低的百分比差异 s 溶液和 PBS 分别为 36.49%、48.81%、56.11% 和 84.36%。对于 PBS 生物润滑剂的所有步态活动，发现线性和体积磨损非常低。总体而言，正常步行步态活动的线性和体积磨损最小，其次是下楼梯 25 公斤、搬运 25 公斤和举起 40 公斤步态活动。